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POAndroid - cam.setPreviewDisplay(holder) running into IOError
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  1. POAndroid - cam.setPreviewDisplay(holder) running into IOError
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    copied!<p>I am trying to use the camera's image as part of live wallpaper. </p> <p>In the Engine that I declared, I have this code:</p> <pre><code>public class Class extends WallpaperService { Camera cam; @Override public void onCreate() { super.onCreate(); cam = Camera.open(); } //... @Override public Engine onCreateEngine() { return new CubeEngine(cam); } class CubeEngine extends Engine { Camera cam; CubeEngine(Camera cam) { this.cam=cam; } //... @Override public void onDestroy() { if (cam != null) { cam.stopPreview(); cam.setPreviewCallback(null); cam.release(); cam = null; } super.onDestroy(); } @Override public void onSurfaceChanged(SurfaceHolder holder, int format, int width, int height) { try { cam.setPreviewDisplay(holder); cam.startPreview(); } catch (IOException e) { e.printStackTrace(); } super.onSurfaceChanged(holder, format, width, height); } @Override public void onSurfaceCreated(SurfaceHolder holder) { super.onSurfaceCreated(holder); } @Override public void onSurfaceDestroyed(SurfaceHolder holder) { if (cam != null) { cam.stopPreview(); cam.setPreviewCallback(null); cam.release(); cam = null; } super.onSurfaceDestroyed(holder); } //... } } </code></pre> <p>cam is a Camera that was declared as Camera.open();</p> <p>When I run this I get: <code>java.io.IOException: setPreviewDisplay failed</code></p> <p>I am now getting this exception:</p> <pre><code> 07-26 00:12:18.399: WARN/CameraService(1357): Overlay create failed - retrying 07-26 00:12:18.419: WARN/CameraService(1357): Overlay create failed - retrying 07-26 00:12:18.439: WARN/CameraService(1357): Overlay create failed - retrying 07-26 00:12:18.459: WARN/CameraService(1357): Overlay create failed - retrying 07-26 00:12:18.479: WARN/CameraService(1357): Overlay create failed - retrying 07-26 00:12:18.509: WARN/CameraService(1357): Overlay create failed - retrying 07-26 00:12:18.529: WARN/CameraService(1357): Overlay create failed - retrying 07-26 00:12:18.549: WARN/CameraService(1357): Overlay create failed - retrying 07-26 00:12:18.569: ERROR/CameraService(1357): Overlay Creation Failed! 07-26 00:12:18.609: WARN/System.err(4104): java.lang.RuntimeException: startPreview failed 07-26 00:12:18.609: WARN/System.err(4104): at android.hardware.Camera.startPreview(Native Method) 07-26 00:12:18.609: WARN/System.err(4104): at com.petrifiednightmares.transparentphone.main.GenericaCamera.surfaceChanged(GenericaCamera.java:29) 07-26 00:12:18.609: WARN/System.err(4104): at android.service.wallpaper.WallpaperService$Engine.updateSurface(WallpaperService.java:687) 07-26 00:12:18.609: WARN/System.err(4104): at android.service.wallpaper.WallpaperService$Engine.attach(WallpaperService.java:749) 07-26 00:12:18.619: WARN/System.err(4104): at android.service.wallpaper.WallpaperService$IWallpaperEngineWrapper.executeMessage(WallpaperService.java:984) 07-26 00:12:18.619: WARN/System.err(4104): at com.android.internal.os.HandlerCaller$MyHandler.handleMessage(HandlerCaller.java:61) 07-26 00:12:18.619: WARN/System.err(4104): at android.os.Handler.dispatchMessage(Handler.java:99) 07-26 00:12:18.619: WARN/System.err(4104): at android.os.Looper.loop(Looper.java:143) 07-26 00:12:18.619: WARN/System.err(4104): at android.app.ActivityThread.main(ActivityThread.java:4293) 07-26 00:12:18.629: WARN/System.err(4104): at java.lang.reflect.Method.invokeNative(Native Method) 07-26 00:12:18.629: WARN/System.err(4104): at java.lang.reflect.Method.invoke(Method.java:507) 07-26 00:12:18.629: WARN/System.err(4104): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 07-26 00:12:18.629: WARN/System.err(4104): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 07-26 00:12:18.629: WARN/System.err(4104): at dalvik.system.NativeStart.main(Native Method) </code></pre>
 

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