發生在機器人

Camera.release（）錯誤相機預覽使用TextureView我用textureview，預覽相機屏幕。發生在機器人

當我的應用程序，調用其他應用程序。

稱爲onSurfaceTextureDestoryed

@Override 
public boolean onSurfaceTextureDestryed(SurfaceTexture surfaceTexture) { 
    mCamera.stopPreview(); 
    mCamera.release(); 
}

，如果另一個應用程序，調用我的應用程序。

發生的RuntimeException Camera is being used after Camera.release() was called

FATAL EXCEPTION: main 
     java.lang.RuntimeException: Camera is being used after Camera.release() was called 
      at android.hardware.Camera.setPreviewTexture(Native Method) 
      at kr.co.iosystem.blackeyeonandroid.video.CameraTextureView.onSurfaceTextureAvailable(CameraTextureView.java:83) 
      at android.view.TextureView.getHardwareLayer(TextureView.java:368) 
      at android.view.View.updateDisplayListIfDirty(View.java:15157) 
      at android.view.View.draw(View.java:15954) 
      at android.view.ViewGroup.drawChild(ViewGroup.java:3609) 
      at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3399) 
      at android.view.View.draw(View.java:16187) 
      at android.view.View.updateDisplayListIfDirty(View.java:15180) 
      at android.view.View.draw(View.java:15954) 
      at android.view.ViewGroup.drawChild(ViewGroup.java:3609) 
      at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3399) 
      at android.view.View.updateDisplayListIfDirty(View.java:15175) 
      at android.view.View.draw(View.java:15954) 
      at android.view.ViewGroup.drawChild(ViewGroup.java:3609) 
      at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3399) 
      at android.view.View.draw(View.java:16187) 
      at android.view.View.updateDisplayListIfDirty(View.java:15180) 
      at android.view.View.draw(View.java:15954) 
      at android.view.ViewGroup.drawChild(ViewGroup.java:3609) 
      at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3399) 
      at android.view.View.updateDisplayListIfDirty(View.java:15175) 
      at android.view.View.draw(View.java:15954) 
      at android.view.ViewGroup.drawChild(ViewGroup.java:3609) 
      at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3399) 
      at android.view.View.updateDisplayListIfDirty(View.java:15175) 
      at android.view.View.draw(View.java:15954) 
      at android.view.ViewGroup.drawChild(ViewGroup.java:3609) 
      at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3399) 
      at android.view.View.draw(View.java:16187) 
      at com.android.internal.policy.PhoneWindow$DecorView.draw(PhoneWindow.java:2690) 
      at android.view.View.updateDisplayListIfDirty(View.java:15180) 
      at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:282) 
      at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:288) 
      at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:323) 
      at android.view.ViewRootImpl.draw(ViewRootImpl.java:2609) 
      at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2428) 
      at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2061) 
      at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1107) 
      at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6007) 
      at android.view.Choreographer$CallbackRecord.run(Choreographer.java:858) 
      at android.view.Choreographer.doCallbacks(Choreographer.java:670) 
      at android.view.Choreographer.doFrame(Choreographer.java:606) 
      at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:844) 
      at android.os.Handler.handleCallback(Handler.java:739) 
      at android.os.Handler.dispatchMessage(Handler.java:95) 
      at android.os.Looper.loop(Looper.java:148) 
      at android.app.ActivityThread.main(ActivityThread.java:5415) 
      at java.lang.reflect.Method.invoke(Native Method) 
      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:745) 
      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:635)

如果刪除mCamera.release()，不會發生RuntimeException的。但我要補充mCamera.release()

如何處理這個問題？

@Override 
public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int width, int height) { 
    try { 
     mCamera.setPreviewTexture(surfaceTexture); //error 
     mCamera.startPreview(); 
    } catch (IOException e) { 
     mCamera.release(); 
     mCamera = null; 
     e.printStackTrace(); 
    } 
}

來源

2017-07-25 hyunwooks

請出示你的源代碼。「onSurfaceTextureAvailable（CameraTextureView.java:83）」 –

@JoeMizuno請您在onSurfaceTextureAvailable try塊我更新 – hyunwooks

手柄的RuntimeException，或檢查mCamera處於活動狀態setPreviewTexture之前。 –

使用攝像機停止預覽並釋放處理程序。因此，在您的活動被破壞後，相機不會立即停止。它會在後臺停止。

來源

2017-07-25 04:41:20

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