Surfaceview get bitmap

Surfaceview get bitmap. You can use the method: public void drawBitmap (Bitmap bitmap, Rect src, RectF dst, Paint paint) and pass it null for src if you want no clipping, and create a dst rectangle that defines the area where the bitmap will be drawn (its left top corner will set the left top corner of the bitmap and its width and hight will set the bitmap's width and height) Difference between SurfaceView and View is that in SurfaceView you can draw directly from separate thread, which means you can organize sort of rendering loop there and draw from it. Draw bitmap over already drawn background on SurfaceView. Now I would like to do a simple but accurate collision detection. 3), and on the emulator (Android 2. hardware. For now there is no code, cause nothing work for me, if someone has a clue how to do it, I will try it. png or . 4. bitmap being drawn multiple times on surfaceview. How to use TextureView instead of SurfaceView with PlayerView of ExoPlayer? 0. holder = getHolder(); this. Every window you see on the screen (a dialog, your full-screen activity, the status bar) has its own I have tried the following, but all I get is a black file: Bitmap bitmap = Bitmap. How easy way to get screenshot of the video stream when using SurfaceView? I have no way to use TextureView because my SurfaceView is ZoomSurfaceView. How about animation? Base on idea about, if we can give a formula to update mBitmap properties, we can execute animation. So I've spent about two days trying to get a working SurfaceView. Cheers. Definitely load all your Bitmaps before the Game starts; This is a clean approach. Probably this can be done by caching the content of the first SurfaceView in a bitmap and then drawing the bitmap on the second SurfaceView. How can a device take a screenshot while Using the camera? We I try to get fullscreen's screenshot in Android. The view hierarchy I have an activity which extends SurfaceView (Android application API level 8). putExtra(MediaStore. Get the latest Stay in touch with the latest releases throughout the year, join our preview programs, and give us your feedback. Get Bitmap from SurfaceView. Ask Question Asked 10 years, 1 month ago. If you use SurfaceView, you can not get the screenshot. I'm using a SurfaceView and SurfaceHolder to hold the camera preview. If you want to update the canvas incrementally, you should keep an "off-screen" canvas backed by a Bitmap that you So I have this camera preview set up with Camera, SurfaceView and SurfaceHolder. However, it seems In your case, I am not sure how big is the bitmap, but a fast way is not to translate the bitmap's canvas but just to draw the bitmap on different X, Y coordinates, or use canvas. OnImageAvailableListener as I request my pictures to be a minimum of 480 height. The Bitmap will contain the results. A very common question around YUV is how to consume it in Android. Then whenever I get a new Bitmap I need to update my SurfaceView which in the main thread. 关于android：从SurfaceView获取位图. SURFACE_TYPE_PUSH_BUFFERS. holder. OpenGL on Android - Convert a Bitmap to a Texture, and save a Texture. I tried to convert this byte array into a mutable bitmap and render on the canvas of surface holder but i get this null pointer exception when "drawBitmap" function is called. Before returning a handle that identifies that DC, the system selects a drawing surface into the DC. Whenever I take a snapshot, I get the Get early access and see previews of new features. I have read a little about this and I found a code snippet that works using the 3 classes on one page, Playing with graphics in Android I altered the code so that I have a ball that is moving and shifts direction when hitting the wall like the picture below (this is using the code in the link). It worked. For this, I covert the View to a bitmap. It has a preview, but the preview size is set to 0 by 0 dp. listener: PixelCopy. How can I do this? So I want to get a superior bitmap encapsulating all the bitmaps that I have drawn to the canvas of my SurfaceView. The holder is the object that contains the View. But TextureView does not have getSurfaceHolder() method. surfaceview); public Bitmap getBitmap (SurfaceView surfaceView) Bitmap bitmap = Bitmap. Ask Question Asked 7 years, 8 months ago. This method is efficient and works You also need a way to calculate whether the user has found the bitmap. I'm thinking of replacing SurfaceView with GLSurfaceView for bitmap rendering but then, since these are bitmaps and nothing like Open GL vectors I don't think the rendering will become faster. However, you can achieve this by using a PixelCopy approach, which allows you to copy the content of a Surface (including SurfaceView) to a Bitmap. All code is ready and already working when I load images from "res" but I have a really hard time reading the image data How can I get bitmap from surfaceView? 3. The main difference between a View and a SurfaceView is that a View is drawn in the UI Thread, which is used for all the user interaction. linearLayout1); ll. This format can be used for processing the input frames before saving to disk or some other action. mremremre1. It is good for simple games and animation effects. 5. Im struggling to capture a surfaceview and save it to bitmap so I can convert it later to pdf, I tested many approaches but none of them seems to work all what I get is an empty bitmap or black one, I have tried : surfaceView. get the bitmap from surfaceView and save it (Bitmap btm = surfaceView. setZOrderOnTop(true) or false, dinamically changed doesn't works. I think the root issue youre having is that some parts of the view/activity lifecycle need to run their course before you start dealing with the surfaceView and starting prevew with it. Probably the same as with OpenGL surface and GDI-based screen capture on I am having trouble tiling a Bitmap. The Surface is on a completely separate layer from all of the View UI elements. getWidth() / 2, mBitmap. IOException; import android. Should work, if you still have any problems, do let me know. addView(cameraSurfaceView); // THIS WORKS ImageView ivCam = (ImageView) There is a great deal of confusion about this, and a few correct answers. But the Problem is while i am setting the image on the SurfaceView, it will not seen whole image. private Bitmap canvasState; In the draw function, initialize canvasState before anything else Get Bitmap from SurfaceView. All the sources googled suggested us to replace surfaceView byTextureView. I could do it via xml using layout. I'm testing an app that works at 40-45 fps with drawable and with bitmap I get 57-59 fps. Mode that supports 4K resolution in order to get my SurfaceView to render at 4K. getDrawingCache(): this method return the SurfaceView as a bitmap so , the sequence is. 3. Hide. Here is a surfaceview: public class AnimationSurfaceView extends SurfaceView implements SurfaceHolder. One way to explore the unity code is to . If your view is not interactive, would be better if you extend View instead of SurfaceView. Skip to main content. Modified 2 years, 10 months ago. EDIT: Since your canvas is static, I suggest doing the following: add a Bitmap to your class. But you should create this bitmap from factory earlier. setY(gs. drawBitmap low performance on Get Bitmap from SurfaceView. lockCanvas gives you is not persistent. Camera; import android. Matrix; import android. createBitmap(view. If you have enough memory I recommend you to load all the images first. What is worth Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I am having an issue with drawing to a SurfaceView, when the bitmap images on the SurfaceView are moved, they flicker (or tear). Find and fix vulnerabilities Actions. MediaStore. I use getBitmap to take picture from TextureView and set it in ImageView, which is front of TextureView and set ImageView visible. Then you lock the canvas of the destination Surface and draw the Bitmap on it. While you can't directly set a background image to a SurfaceView, you can overlap an ImageView (displaying your background image) and your SurfaceView on top of this, making it transparent. image); Is this cor Everything works fine, but at a certain point I need to get the actual resultBitmap (or requested render ) provided as a Bitmap, to be able to modify it outside of the SurfaceView and finally get it back into the render-process to keep on using it on my surfaceView. Get early access and see previews of new features. 9. Am I wrong in setting the values in the constructor? Yes, since normal behaviour dictates that the SurfaceView will not have been laid out yet when it's constructed. setX(gs. – Am developing a simple camera app. A Surface is an object holding pixels that are being composited to the screen. nomedia with simple oneliner codes. Adaptive apps Wear OS Android for Cars Android TV Get early access and see previews of new features. Modified 10 years, 1 month ago. Here's a snippet from my (Kotlin) code: override fun I have a surfaceView for scanning. I've found code snippet on internet which do it through openGL. Loading the image each frame is very time consuming. getHeight(), Bitmap. Camera; import Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I'm not sure I understand your question. I also want the functionality where user can select a rectangle and delete it. If the surface texture is not available, this method returns null. Bundle; import android. The moment you call unlockCanvasAndPost, the contents of the surface buffer are pushed out to the screen. I've tested it on a pair of Nexus 7 devices both running Android 4. ARGB_8888); Android SurfaceView内容获取 这几天在做一个Android的小项目，项目中需要使用到SurfaceView来显示相机捕获的内容，同时还有一个SurfaceView用于绘制一些辅助线，最后要得到一张图，包含相机内容和用户编辑的辅助线。用户的辅助线是相对比较好保存的，直接将操作在图片上进行，再将图片贴到SurfaceView上 I thought I could get the data converted from the SurfaceView. Java plugin code can be called from C# scripts. – I have a surfaceview in my layout, which i draw a bitmap to. I have also an ImageView where I will be putting a modified version of the camera image and I want this to update lets say once every second. I did not have this problem in previous iterations of my code. startActivityForResult(cameraIntent, 101); When you lock the canvas you get the one that isn't currently being shown (which means you get a canvas that is a frame behind). – In this article, you will learn how to use SurfaceView in Camera2. I'm converting like this: Bitmap returnedBitmap = Bitmap. Android: Low FPS drawing many bitmaps in a surfaceview. createBitmap(surfaceView. The source will be scaled to match the width, height, and format of this bitmap. Get the OpenGL Texture Handle from a SurfaceTexture. Access to Java classes of the plugins is mediated by high level API available to C# scripts. If you are drawing onto the SurfaceView using a Canvas, you can simply create a Bitmap, create a new Canvas for that Bitmap and execute your drawing code with the new Canvas. You don't need the surfaceView01. while (true) {. . Canvas canvas = The Canvas that Surface. logcat logcat. How to optimize bitmap draw in Android? 4. setFormat(PixelFormat. RectF; public class GButton { public Matrix btn_matrix = new Matrix(); public RectF btn_rect; float width In the code below, I use the camera as input to the TextureView, grab the bitmap and render it to a SurfaceView, measuring how much time it takes. I have found following definitions: Surface Surface is a collection of pixels. I tried to just draw a jpeg image as its background of SurfaceView. canvas. Modified 8 years, 1 month ago. but first you have to assign any image , and you may use the button click event, this code will only demonstrate that how to store the drawable image in bitmap Object. However you can use a TextureView to play your video, then you can get screenshot from TextureView. Follow edited Aug 17, 2013 at 16:51. A SurfaceView takes the same layout parameters as other I think the easiest way to get a Bitmap is to let the player render on a TextureView and then use the getBitmap method. Hot Network Questions How can a Kenyan Deputy President challenge his impeachment after it passed the Senate? How to get rid of this certain kind of insect/fly As of October 2024, have any statements been made by Trump or Musk that the latter may have a formal role in the former's government if elected? I'm having a little trouble of getting an image/drawable or a bitmap from a SurfaceView that works as a camera preivew. See new badges. setZOrderOnTop(true); this. 2. But I am not sure you need SurfaceView, cause it used not to draw bitmap once, but to draw a lot of times after user interaction. Thank you! But the surfaceView bitmap is still black. @the moment I'm getting the texture. drawBitmap(). When the activity starts, you get callbacks in this order: onCreate im having a single Bitmap in a surfaceview. Canvas; import android. In addition, I converted RGBA from frameAvailable to bitmap and saved to images on device, it is also distorted. You will have to handle calculating of position and if your bitmap was clicked from there – I tried to get the frame as @liute62 suggested and it works really well for a start. Smooth bitmap rotation android SurfaceView. In the context of the Android framework, A SurfaceView is a component that you can use to embed an additional composite layer within your view hierarchy. So i want to set the bitmap that should be set with the device size/ SurfaceView Size. But now that I finally got the bitmaps to scale properly by using a separate Canvas for each bitmap, this problem started occurring. Do all of your rendering off screen, then blit Hello I have this code , I tried to adapt it from android examples by google developer pages. But And SurfaceHolder has been used for this. So what i have to do to draw image on A SurfaceView is a custom view in Android that can be used to drawn inside it. */ public Screenshot(Activity activity) { final View For Get Actual Image predefined path of Captured Image using. OnClickListener { // Defined All Field private SurfaceView surfaceView; private SurfaceHolder surface Hi I have a raw dump of image which i store as byte array i have to display this on surface view. Viewed 61k times Part of Mobile Development I'm developing a game using SurfaceView which listens to touch events. I want to do canvas. getWidth(), view. It is always 0. g. ANDROID: How to eliminate lag and improve FPS in Android Canvas SurfaceView? 0. getBitmap()(The docs itself says to try to avoid it) from the public void onSurfaceTextureUpdated(SurfaceTexture texture) instead After continuous digging I've found the answer seems I like answering my own questions here. In fact, there are cases where the display data for the SurfaceView isn't even accessible to the app processor - it may be the output of a hardware video pipeline that is composited with the For API levels 24 and newer, you can use the PixelCopy APIs to copy all or a portion of the SurfaceView into a bitmap. moveX); surfaceView. I also tried to pl How can I get bitmap from surfaceView? Hot Network Questions How to align the math symbol with regular text in tikz figure in a rectangular node? If "tutear" is addressing as "tu" then what is the equivalent or a close match for "usted"? Adobe Illustrator Pattern Brush issue Generally the View part of the SurfaceView is a transparent hole. getDrawingCache() now get drawing cache is deprecated view. I do not want to have a layer above those bitmap as my background is moving The only way to capture the content of a SurfaceView is if you are rendering into it using OpenGL. How to use ExoPlayer in Android. view = root; } /** Create snapshot handler that captures the root of the whole activity. Remember that you are answering the question for readers in the future, not just the person asking now. Don't do this in onDraw(). I want that my game's look and feel should be the same in all resolutions. Skip to content. Sign in Product GitHub Copilot. And SurfaceHolder has been used for this. Because there is no method getBitmap() which returns a bitmap of my whole entire SurfaceView I need some other way to achieve such. It seems, that it isn't possible to get the bitmap of the SurfaceView directly. For the specific case of MediaCodec output, you have a couple of choices. getHeight(), 你可以通过SurfaceHolder接口访问这个surface，getHolder ()方法可以得到这个接口。 surfaceview变得可见时，surface被创建；surfaceview隐藏前，surface被销毁。 这样能节 Draw a bitmap on SurfaceView. pwop; import java. Ask Question Asked 12 years, 4 months ago. I am using SurfaceView to draw the Bitmap Image. This is why you might hear people refer the buffer as a swap buffer, because the currently display screen gets swapped with the one that you draw everything on. I just want to draw a rectangle when the user touch on the screen. createScaledBitmap(player, width/10, width/6, true); public class CameraFragment extends Fragment implements SurfaceHolder. view. 1,036 3 3 gold badges 16 16 silver badges 34 34 bronze badges. In the View implementation the onDraw method is called directly by the holder in a code we can not see when the View is created. It means, the result image will give actual pixel size of the screen (ie, 1080x768), not multi-megapixel high resolution image of the Camera app. OnClickListener { // Defined All Field private SurfaceView surfaceView; private SurfaceHolder surface Hier sollte eine Beschreibung angezeigt werden, diese Seite lässt dies jedoch nicht zu. If you want to update the UI rapidly enough and render a good amount of information in it, a SurfaceView is a better choice. For reference, this is how I am starting LibVLC. Tutorials I am following online aren't working even when followed to the letter. I have code that takes screenshot of the whole activity and writes it to the SD card. ARGB_8888); //Bind a canvas to it Canvas canvas = new Canvas(returnedBitmap); //Get the view's background Drawable bgDrawable 3) surfaceView. In my class i cant get width and height of the SurfaceView. So, can I call another Activity from HomeScreen and do not display it and just get the Bitmap of that screen. To create a DC, call the CreateDC function; to retrieve a DC, call the GetDC function. But I am unable to Get started; Start by creating your first app. getBackground(); and even replace it with textureview and do textureview. Try this code. How can I get Bitmap from ExoPlayer w Rendering Bitmap on SurfaceView impacting performance. SurfaceHolder; import android. Before we continue to code, we need to go over how Android creates Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company How can I get bitmap from surfaceView? Hot Network Questions How to align the math symbol with regular text in tikz figure in a rectangular node? If "tutear" is addressing as "tu" then what is the equivalent or a close match for "usted"? Adobe Illustrator Pattern Brush issue I can accomplish this with a Bitmap using the code shown below, but converting this to an AnimationDrawable is where I'm stuck. After that I hide ImageView and recycle bitmap. */ public Screenshot(View root) { this. I am trying to retrieve a frame from a video that is playing back using LibVLC in android. public class TestCanvas extends Activity Am developing a simple camera app. I want to copy and replicate the content of this SurfaceView on the other SurfaceView. Now it is cached but when i enter the cache loop the images are only displayed from cache and images th A SurfaceView is a component that you can use to embed an additional composite layer within your view hierarchy. It has one feature to take snapshot while rendering the video on surface view. Go deeper with our training courses or explore app development on your own. Every window you see on the screen (a dialog, your full-screen activity, the status bar) has its own I am having trouble tiling a Bitmap. I want to load large bitmaps efficiently, so i decided to use picasso library. getBitmap()(The docs itself says to try to avoid it) from the public void onSurfaceTextureUpdated(SurfaceTexture texture) instead android NDK use native surfaceview to show BMP picture. setDrawingCacheEn I am developing a game. ” Why is "gift" the right answer? How to find the names of strings used in scripting, like the Bounding Box? Apple IIgs to VGA adapter Is "Canada's nation's capital" a mistake? Get Bitmap from SurfaceView. The code can access Android system as a conventional android application. Follow answered Oct 12, 2011 at 15:33. io. Implement this method inside your Activity where you are using the Surface View and in the onImageReceived callback, add the Bitmap received into the array of Bitmaps which the SurfaceView uses. package fortyonepost. Bitmap; import android. Android drawing on surfaceview and canvas. Now, this has complicated the code a lot and I will like to simplify it. Need to draw bitmap to background instead of simple color. What I want to do is Show a background image on the SurfaceView before starting to play video. That's because people use them for games. Then we have to call it explicitly. This example show how to create sharpen and blur bitmap, by convolution using ScriptIntrinsicConvolve3x3. getHeight(),Bitmap. If you don't, your game could lag, due to the GC. If you test it, you will see that the bitmap is not always written to the same buffer, and the screen will alternate between the two buffers. In my res/drawable folder I have a large background that is also in landscape mode but larger than most display sizes. One SurfaceView is drawn upon when user touches it. TRANSPARENT); Now i want to clear the screen by using So I've spent about two days trying to get a working SurfaceView. I don't know Glide, but the best answer would be to get the bitmap from Glide. SurfaceView; import I am trying to draw a ball to my screen using 3 classes. asked Aug 17, 2013 at 13:52. In order to call onDraw we need the Canvas object to pass as a parameter. – Enclose your surfaceView with a FrameLayout in your xml Layout. 4) surfaceView. You can use glReadPixels() to grab the content of the surface. png) with alpha (representing the game objects) are drawn on the canvas. android surfaceview. Again, I think the root issue is the amount of stuff youre doing in onCreate vs. Share. Im trying to write a game on droid, the way i take care of different screen resolutions is i make a bitmap with a target resolution (320x480), make a canvas from it and draw all the elements on it using fixed coordinates, then i just draw this bitmap on the surfaceView canvas and it rescales on different screens. jpg . Before we continue to code, we need to go over how Android creates While this code may solve the question, including an explanation of how and why this solves the problem would really help to improve the quality of your post, and probably result in more up-votes. This SurfaceView flow is controlled by GameThread in which I draw 3 times canvas. Config. ). I normally get an entirely black screen. When it comes to animated sprites, you can use a sprite sheet rather than load them individually frame by frame. ffmpegSv is a TextureView public class CameraFragment extends Fragment implements SurfaceHolder. The problem is that the SurfaceView returns a black screen. However, I also need to capture the image when button click. The onTouchEvent method in SurfaceView works fine for many of the devices, but in some devices, sometimes it doesn't get called (Moto X Style is the one) and my app also stops responding. id. So you can just pause I have a Surfaceview thread and an off canvas texture bitmap that is being generated (changed), first row (line), every frame and then copied one position (line) down on Get the latest; Stay in touch with the latest releases throughout the year, join our preview programs, and give us your feedback. A Surface is like an interface that allows you to draw on it, but not to read from it. Hot Network Questions "Why should one cook their own food" <--- I want to paint black on surfaceView when i click the button but, it's seems like i'm messing something with my code, it's always white, i've tested the button and it's works: SurfaceView surfaceV you're creating new bitmap way too often. I am using multi touch to handle gestures such as zoom and drag, the problem is that when i scale the bitmap i dont want it to be able to be down scaled In Android I use a SurfaceView to display a simple 2D game. import java. moveY); in onScroll()) in my SurfaceView class with custom GestureDetector. Callback{ private AnimationWorker animationWorker; Diagnostics: As if I use surfaceView, the image is rendered correctly on View and sending RGBA directly from cameraX works fine, it seems somehow the calling library is not good with RGBA received from frameAvailable. Android Take Screenshot of Surface View Shows Black Screen. I could create the AnimationDrawable from an ImageView, but I can't find a way to get the ImageView onto the canvas either Am I going about this in the wrong way? Is there a simpler way to get an animated gif to You can control the format of this surface and, if you like, its size; the SurfaceView takes care of placing the surface at the correct location on the screen The surface is Z ordered so that it is behind the window holding its SurfaceView; the SurfaceView punches a hole in its window to allow its surface to be displayed. 1. In my android app there are two SurfaceViews. It will click a picture when the activity starts up. setDrawingCacheEnabled(true); Bitmap bitamp = Bitmap. There are some tricks to setup SurfaceView to make it on Top of all views behind. The Surface is a separate layer that is composited behind the layer with all the Views, so normally the SurfaceView's View is just a transparent window that the layout code uses to figure out where the Surface should peek through. 我需要将SurfaceView的内容转换为位图。 我尝试使用SurfaceView中的以下 Am working in H264 video rendering in Android application using SurfaceView. I make the surfaceview transparent by calling this code : // framebuffer is a Bitmap. The bitmaps (. mremremre1 mremremre1. Android devices's camera captures pictures with much higher resolution than the screen density of your device. Plugins allow to extend the default Unity activity. How to get Surface of SurfaceView. You can direct the output to a SurfaceTexture, and then render the video frame twice using OpenGL ES. You will have to handle calculating of position and if your bitmap was clicked from there – I'm learning from the Documentation of Suface, Suface Flinger, SurfaceView, SurfaceHolder and Bitmap. Im trying to flick an image on the entire screen (surfaceView) but im unable to get its width and height. This makes it possible to draw to the Surface from a separate thread. I am developing a game. Config#ARGB_8888 This causes a force close because displayWidth is 0. Improve this answer. - luofujie/NativeSurfaceview. Adaptive apps Wear OS Android for Cars Android TV ImageFormat#YUV_420_888 is one of the most common image format supported by Android Cameras. ARGB_8888); Canvas canvas = new Canvas(bitmap); surfaceView. Viewed 8k times But in GraphicsView's documentation I didn't find a corresponding description. Drag controller get screenshot with ImageView with last frame which I set up. SurfaceView Vertical Line Drawing too Slowly across Screen. So what i have to do to draw image on I'm attempting to use a SurfaceView to render a 3840x2160 bitmap on a 4K Android TV device (Nvidia Shield TV running Android 9) at native resolution. Adaptive apps Wear OS Android for Cars Android TV In this article, you will learn how to use SurfaceView in Camera2. If your Surface was created from a SurfaceView for example, then you can copy the Bitmap from the source SurfaceView using PixelCopy. If that is not possible, create a Bitmap of the proper size, wrap that in a Canvas, and ask your ImageView to draw() to the Canvas. The bitmap returned by this method uses the Bitmap. Navigation Menu Toggle navigation. com. These are the important parts of my This seems simple, I am trying to set a bitmap image but from the resources, I have within the application in the drawable folder. startActivityForResult(cameraIntent, 101); Do it in onDraw(). I've been attemping to do this in a thread inside a SurfaceView. Image. Just found the Movie class. Draw a bitmap on SurfaceView. If you have declare a bitmap object and you want to display it or store this bitmap object. I tested it on my phone (Nexus S, Android 2. Returns a android. 我需要将SurfaceView的内容转换为位图。 我尝试使用SurfaceView中的以下 I case of SurfaceView we need to call onDraw manualy. Please thinking via simple sample: In this article. Contribute to ddxxll2008/DrawBitmapOnSurfaceView development by creating an account on GitHub. When we implement the version extending SurfaceView the onDraw method is not called. This means you never really get back the latest buffer. If you want to update the canvas incrementally, you should keep an "off-screen" canvas backed by a Bitmap that you Get started; Start by creating your first app. Once to the SurfaceView for display, once to an off-screen buffer from which you can capture the pixels. Checking whether these bitmaps are overlapping is quite easy. In stead, you should use the SurfaceHolder. Let's create a new empty activity to practice the Camera2 API. getDrawingCache()) create new dummy canvas with saved bitmap, I case of SurfaceView we need to call onDraw manualy. Here is an sample code to use TextureView, on its onSurfaceTextureAvailable() callback you can get a SurfaceTexture, then you can use this SurfaceTexture to create a Surface for ExoPlayer Im using a SurfaceView to extend my class. getDrawingCache(); and surfaceView. But how do I check for collisions when these bitmaps have transparent Returns a android. I'm trying to mask a rectangular bitmap image using a circular bitmap mask. This SurfaceView also has an onTouch() method where when I drag the image it will move relative to the mask which will Why would you be able to add a touch listener on a bitmap? Touch events are passed to views, e. SurfaceView Vertical Line Drawing too Slowly across Screen . I don't want to use external library and When I'm trying to get the canvas from the holder I'm getting null. provider. getDrawingCache()) view. Staging Ground badges . Config#ARGB_8888 Currently I am using view. Below is my code - Bitmap bitmap = Bitmap. I am using multi touch to handle gestures such as zoom and drag, the problem is that when i scale the bitmap i dont want it to be able to be down scaled Bear in mind that SurfaceView has two parts, the Surface and the View. 3,444 1 1 gold badge 30 30 silver badges 44 44 bronze I want to create animation on surfaceview. BitmapFactory; import android. getHeight() / 2); Rotate mBitmap, you can update matrix value. In order to capture live preview image in I have two Views (Textview & ImageView) in the FrameLayout, I want to save the image with text. I want to have the Bitmap drawn to coordinates defined in a 2D Array. getWidth(),view. Parameters; import android. A device context (DC) is a data structure defining the graphics objects, their associated attributes, and the graphics modes affecting output on a device. So now i want to measure the surfaceview/canva's width and height so that I can launch the images in proper proportion rather than hard coded values. Capture screen of SurfaceView. Here's the deal: A SurfaceView has two parts, the Surface and the View. Bitmap representation of the content of the associated surface texture. I do prefer to get it from the ImageReader. framebuffer = framebuffer; this. But i am not able to do it dynamically from code. Define a rectangular bounding box that contains the Android image. For example, say I public static Bitmap getBitmapFromView(View view) { //Define a bitmap with the same size as the view Bitmap returnedBitmap = Bitmap. Now I would like to set it as the background of the SurfaceView so that it perfectly fits into the display. I have a SurfaceView that must need bitmap to draw something(on surface) here is my frame-code. In order to help teach myself how it works I need a working SurfaceView program. draw(canvas); printBitmapToFile(bitmap); Any idea on how to retrieve the I'm rendering video from some external source as a series of bitmaps to a SurfaceView. i want to add image on surfaceview and make it as clickable. android 将bitmap绘制到Surfaceview中，#Android中将Bitmap绘制到SurfaceView中SurfaceView是Android中的一个特殊的视图类，它可以在一个单独的线程中绘制图形。在一些需要频繁更新UI的场景下，使用SurfaceView可以提高性能，避免UI卡顿。本文将介绍如何将Bitmap绘制到SurfaceView中，实现动态显示图片的效果。 You are loading three bitmaps in different imageviews without scaling it according to the size you want to show on your UI. Callback,View. As i have placed all bitmaps, now how to hide and show bitmaps In surface view randomly. Instant dev environments I use a lot of bitmaps on SurfaceView too and don't have this problem. Hot Network Questions Is there a “Closure-of-Range Theorem” for Banach spaces? Meaning of "tunnels" in "The Holy State" by Thomas Fuller A cipher with a little twist Buying a home with a HOA The knight cannot jump over its tail I'm rendering video from some external source as a series of bitmaps to a SurfaceView. Get Bitmap from SurfaceView我需要将SurfaceView的内容转换为位图。 我尝试使用SurfaceView中的以下代码片段实现此目的：[cc] public final Bitmap getScree 码农家园 关闭. I would be very grateful if someone Note that below codes are for capturing image with its displayed pixels, not for taking camera. Hello world Training courses Tutorials Kotlin for Android Monetization with Play ↗️ Extend by device; Build apps that give your users seamless experiences from phones to tablets, watches, and more. – I have my SurfaceView up and running with a button to open the camera and take a picture which is used as the background and another button to add items that sit on top and can be moved around. I want to be able to draw rectangles on bitmap and then save ONLY those rectangles (and not the original bitmap) out to a new bitmap. Sometimes the rendering is not fast enough. When I call startPreview on camera object and than takePicture the callback is executed correctly, but I need to take and save the picture more quickly, so take the first visible frame of Why would you be able to add a touch listener on a bitmap? Touch events are passed to views, e. The application is always in landscape mode. Viewed 798 times Part of Mobile Development Hi I have a raw dump of image which i store as byte array i have to display this on surface view. Using exoplayer in Android. Thi Hi I've been doing this for 4 days but I can't solve it. Here is an sample code to use TextureView, on its onSurfaceTextureAvailable() callback you can get a SurfaceTexture, then you can use this SurfaceTexture to create a Surface for ExoPlayer I am trying to draw a ball to my screen using 3 classes. Every time you get a touch event, you're loading in your bitmaps and you can get 80 to 100 touchevents every second! So to start with, define global bitmaps (private Bitmap bmp1; etc), load them somewhere else and THEN use them in your touch event. Then add your buttons to the same FrameLayout. I even cannot use lockcanvas to draw image on canvas since i set my SurfaceHolder type to SurfaceHolder. media. Hot Network Questions I rely too much on counting beats, how can I improve? One word for someone who is Coerced Why is toluene less acidic than cyclopentadiene? Difference between SurfaceView and View is that in SurfaceView you can draw directly from separate thread, which means you can organize sort of rendering loop there and draw from it. I believe, for purpose of drawing a bitmap this is overkill and much simpler to subclass View. Also, you may want to make the surfaceView01 a class variable so If you use SurfaceView, you can not get the screenshot. scale(scaleValue, 1, mBitmap. Learn more about Labs. The problem I am having is that if bitmaps end up crossing each other then they stick together as they share the same space. os. It should work with SurfaceView since it does in my demo. 导航. bm = BitmapFactory. getWidth(), surfaceView. Camera. I was able to draw the bitmap on canvas -->using the comm Get Bitmap from SurfaceView. setImageBitmap() i've managed to start the preview and display it on a surfaceView, but i don't know how to convert the byte[] data (that comes in Yuv format i think) in a RGB bitmap to display it on a imageView. But it doesn't work! Code snippet: public class RemoteManager extends Activity { Bitmap mSavedBM; private EGL10 egl; private EGLDisplay display; private EGLConfig config; private EGLSurface surface; private EGLContext eglContext; private GL11 SurfaceView: The source from which to copy: dest: Bitmap: The destination of the copy. I'm looking for a program that has the SurfaceView generated in a separate class. Every time you call lockCanvas you need to redraw the picture from scratch. Callback methods. setOnClickListener if thats what you mean. OnPixelCopyFinishedListener: Callback for when the pixel copy request completes: listenerThread: Handler: The callback will be invoked on this Handler when the copy is Get started; Start by creating your first app. I've actually I was wondering if it is possible to save the first frame from camera preview, visible on a SurfaceView. Earn badges by improving or asking questions in Staging Ground. Alternatively you can use PixelCopy with a SurfaceView starting from API 24. Viewed 61k times Part of Mobile Development I found this Flickering while using surface view post, and try all the solution-like mention inside, but it's not work, the accepted answer mention about dirty rect, remind me to update every pixels if call lockCanvas() without rect specified, but I think I already draw the whole bitmap in the next, imply I updated every pixels, so I get not I thought I could get the data converted from the SurfaceView. About; Products OverflowAI; Capture Screenshot of SurfaceView with bitmap content on it. I'm trying to convert a view to bitmap but I lose the black color. You can use the method: public void drawBitmap (Bitmap bitmap, Rect src, RectF dst, Paint paint) and pass it null for src if you want no clipping, and create a dst rectangle that defines the area where the bitmap will be drawn (its left top corner will set the left top corner of the bitmap and its width and hight will set the bitmap's width and height) In your case, I am not sure how big is the bitmap, but a fast way is not to translate the bitmap's canvas but just to draw the bitmap on different X, Y coordinates, or use canvas. decodeResource(null, R. I'm using a SurfaceView in Android. Rendering Bitmap on SurfaceView impacting performance. It’s a multi-plane YUV (YCbCr) format represented by three separate planes in android. I tried to get the frame as @liute62 suggested and it works really well for a start. Write better code with AI Security. 44. 3. Latest updates I think you are getting the value of a pixel at the x,y location on the sprite, you should get the value of the pixel on canvas. I would like to know how to independently take a screenshot of the SurfaceView only. - Muddz/QuickShot. For Get Actual Image predefined path of Captured Image using. According to the Android 6 release notes, I should be able to set preferredDisplayModeId to a Display. your SurfaceView. drawBitmap() multiple times but now app freezes (ANR) once I move my SurfaceView (call surfaceView. Multiple Bitmap update on same android SurfaceView. Adaptive apps Wear OS Android for Cars Android TV Intro. I think it happend because the imahe size is larger then the device screen size. If you want to take an image as Camera app provided, use takePicture method. 效果图 在自定义的SurfaceView上绘制bitmap，如图所示，绘制一个声波模型，可以设置绘制百分比。 I am trying to draw a bitmap to my SurfaceView actually with the following code: (this will be run in another Thread and in a while, because it needs to refresh the SurfaceView). My xml is: <FrameLayout android:id="@+id/ im having a single Bitmap in a surfaceview. Staging Ground badges. All code is ready and already working when I load images from "res" but I have a really hard time reading the image data The Canvas that Surface. final CameraSurfaceView cameraSurfaceView = new CameraSurfaceView(this); LinearLayout ll = (LinearLayout)findViewById(R. A better way to do what you are trying to do is to have all your images side-by-side in one image (called your image Atlas or Texture Atlas to be more accurate) and load it only once to memory at startup. Latest updates SurfaceView doesn't take a Canvas, it provides a Canvas -- note the Canvas is a return value from lockCanvas(), not an argument. I would be very grateful if someone Get Bitmap from SurfaceView我需要将SurfaceView的内容转换为位图。 我尝试使用SurfaceView中的以下代码片段实现此目的：[cc] public final Bitmap getScree 码农家园 关闭. How can I get bitmap from surfaceView? Hot Network Questions How to align the math symbol with regular text in tikz figure in a rectangular node? If "tutear" is addressing as "tu" then what is the equivalent or a close match for "usted"? Adobe Illustrator Pattern Brush issue I have an app that I want to be able to capture a screenshot. This mostly works, except that the state of the underlying bitmap is (usually, but not always) preserved for each new frame. Set mBitmapX and mBitmapY to random x and y positions that fall inside the screen. createBitmap (surfaceView. graphics. But you should understand requirements and choose more appropriate solution. 2). Stack Overflow. I have drawn images on a surface view which is residing in a relative layout. Callback to discover any changes relevant to the SurfaceView its size and format. A SurfaceView takes the same layout parameters as other views, so it can be manipulated like any other view, but the SurfaceView's contents are transparent. What I want to do is this-I have an image view with a bitmap. But I am unable to I am trying to make a simple game where, i want to have 5 bitmaps in surface view and they are shown and hidden randomly . Please help me out here. drawBitmap(bitmap, fromRect, toRect, paint) and shift rectangles as in This is the first time I've used a SurfaceView, mulitthreading and a touch events. ACTION_IMAGE_CAPTURE); cameraIntent. A SurfaceView is a view in your app's view hierarchy that has its own separate Surface, as shown in the diagram below. Automate any workflow Codespaces. This is my coding for calling the get bitmap function: I have created a class that extends SurfaceView in order to cycle a series of ARGB bitmaps. Starting a new answer to hopefully be more clear. So the image's height should be equal Get started; Start by creating your first app. You can create a class that contains all the static Bitmap fields. public static Bitmap foo; Then in your activity class you can load these Bitmaps (I usually put my Bitmaps in the Assets folder): Everything works fine, but at a certain point I need to get the actual resultBitmap (or requested render ) provided as a Bitmap, to be able to modify it outside of the SurfaceView and finally get it back into the render-process to keep on using it on my surfaceView. But the best method to use is : But the best method to use is : Set the camera's orientation to 90 degrees. Adaptive apps Wear OS Android for Cars Android TV Do it in onDraw(). getbitmap() but no different result, So I have this camera preview set up with Camera, SurfaceView and SurfaceHolder. 2. 0. xml: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company According to my experience Bitmap is faster than drawable. Intent cameraIntent = new Intent( android. I can load my animated gif into it using an InputStream, then play the movie bit by bit in my onDraw() because the Movie class supports a draw() method where I can supply my canvas and x,y coordinates. Please refer hererefer here for more detail. After that, I start dragging main layout. setVideoSurface(surfaceView). EXTRA_OUTPUT, outputFileUri); this. I have a thread where I will get some Bitmap one by one. But I am unable to This activity draw a new Bitmap every second on the SurfaceView, without clearing the screen before. Im using exoPlayer. New. Any suggestions? Here is the code for SurfaceView in main. import android. Activity; import android. I came up with a method of determining the space utilized on the SurfaceView for each bitmap and then checking the x and y values of the touch listener to determine if the user was selecting a known location of the bitmap. findViewById(R. I think the best way to do what you want is to use off-screen Bitmaps, for which you create your own Canvas. This simple way should work: surfaceView = v. I would like to be able to draw let's say "grass" to certain coordinates, and "water,etc. drawBitmap(bitmap, fromRect, toRect, paint) and shift rectangles as in I'm learning from the Documentation of Suface, Suface Flinger, SurfaceView, SurfaceHolder and Bitmap. I worked with a logic using a SurfaceView component to get frames from camera, I use a SurfaceView because I need to use in background inside of the app, I want to ask you, how do I solve this problem, counting on your help. Hot Network Questions “[it] became a _____ for me. (It's an argument to unlockCanvasAndPost(), which is somewhat unfortunate. You don't need to use the reference "resized" you can just say: player = Bitmap. I had performances issues when drawing a 1920x1080 bitmap as a background image for each SurfaceView repaint: the only solution I found (thanks to this In my android app there are two SurfaceViews. Write better code with AI Security Get started; Start by creating your first app. The function I want to achieve is: Draw in the Canvas of GraphicsView, then save it to memory as a Bitmap, and then display it i'm trying to get the byte[] from the preview of the camera, convert it to bitmap and display it on a imageview with imageView. android; camera; storage; screenshot; surfaceview; Share. Within my activity I've currently implemented all the SurfaceHolder. There is no official documentation for UnityPlayer Java API. Here is the code that takes the screenshot of the whole activity. onResume. Just remove the method and leave the code inside the public void onClick(View v) {} just get rid of the surfaceView reference and use the surfaceView01 instead. I have a class which is the camera preview class and I created a get bitmap function inside the class and I want to call this function in another class to get the bitmap. [Moved to MavenCentral] Capture images of any View, SurfaceView or Bitmap from your Android app in: . app. I am using this logic to get frames: public synchronized void onPreviewFrame(final byte[] data, final Camera camera) { I have been able to get the Bitmaps of all the 3 screens and display it in Gallery view by placing all the code in HomeScreen Activity only. Here is my code : public class Screenshot { private final View view; /** Create snapshots based on the view and its children. hwykr kukkx ytvl vksx pippghz drey wwpzxu oedvg iizf wyo