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POAndroid SurfaceView shows black screen
 

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    <p>I am trying to draw on a surface view, but I get a black screen. My xml layout:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"&gt; &lt;com.example.surfaceview.MySurface android:id="@+id/padview" android:layout_width="match_parent" android:layout_height="match_parent" /&gt; &lt;/FrameLayout&gt; </code></pre> <p>Important parts of my code: MySurface.java</p> <p>public class MySurface extends SurfaceView implements SurfaceHolder.Callback {</p> <pre><code>public DrawingThread thread; public MySurface(Context context, AttributeSet attrs) { super(context, attrs); SurfaceHolder surfaceholder = getHolder(); surfaceholder.addCallback(this); thread = new DrawingThread(surfaceholder, context, new Handler() { @Override public void handleMessage(Message m) { // Do some handle thing } }); setFocusable(true); } @Override public void surfaceChanged(SurfaceHolder tholder, int format, int width, int height) { thread.setSurfaceSize(width, height); thread.holder = tholder; } @Override public void surfaceCreated(SurfaceHolder holder) { thread.running = true; thread.start(); } @Override public void surfaceDestroyed(SurfaceHolder holder) { boolean retry = true; thread.running = false; while(retry) { try { thread.join(); retry = false; } catch (InterruptedException e) { } } } public Thread getThread() { return thread; } public class DrawingThread extends Thread { private SurfaceHolder holder; private Context context; private Handler handle; private Paint background; private Rect blank; public boolean running; public boolean created; public int canvasheight; public int canvaswidth; public PadThread(SurfaceHolder tholder, Context tcontext, Handler thandler) { holder = tholder; context = tcontext; handle = thandler; // Temporary canvas dimentions canvaswidth = 1; canvasheight = 1; running = false; created = false; background = new Paint(); background.setColor(R.color.white); blank = new Rect(0, 0, canvaswidth, canvasheight); } @Override public void run() { Log.d("SurfaceView Test", "Drawing thread run"); while(running) { Canvas canvas = null; try { canvas = holder.lockCanvas(); synchronized(holder) { // update object states // get user input gestures drawing(canvas); } } finally { if(canvas != null) { holder.unlockCanvasAndPost(canvas); } } } } private void drawing(Canvas canvas) { // Clear screen canvas.drawRect(blank, background); // Draw Things } public void setSurfaceSize(int width, int height) { synchronized(holder) { canvaswidth = width; canvasheight = height; // New background rect blank.set(0, 0, canvaswidth, canvasheight); } } } </code></pre> <p>}</p> <p>The code is based off of Google's Lunar Landar SurfaceView example at <a href="http://developer.android.com/resources/samples/LunarLander/index.html" rel="nofollow">http://developer.android.com/resources/samples/LunarLander/index.html</a></p> <p>I know that all of the code is being reached through logging.</p>
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    1. COIt's been fixed, the issue was that I had to load colors from the provided context rather than R. So instead of `background.setColor(R.color.white)`, I had to use `background.setColor(context.getResources().getColor(R.color.white)`.
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