一周前我发布了一个名为“Cam Shooter”的应用程序,它使用相机表面视图和开火按钮。我收到了 20 多个关于此错误的报告:
java.lang.RuntimeException: set display orientation failed
at android.hardware.Camera.setDisplayOrientation(Native Method)
at com.jouni.camsniper.MainActivity.surfaceChanged(MainActivity.java:139)
at android.view.SurfaceView.updateWindow(SurfaceView.java:573)
at android.view.SurfaceView.setFrame(SurfaceView.java:296)
at android.view.View.layout(View.java:7199)
at android.widget.RelativeLayout.onLayout(RelativeLayout.java:912)
at android.view.View.layout(View.java:7205)
at android.widget.RelativeLayout.onLayout(RelativeLayout.java:912)
at android.view.View.layout(View.java:7205)
at android.widget.FrameLayout.onLayout(FrameLayout.java:338)
at android.view.View.layout(View.java:7205)
at android.widget.FrameLayout.onLayout(FrameLayout.java:338)
at android.view.View.layout(View.java:7205)
at android.view.ViewRoot.performTraversals(ViewRoot.java:1145)
at android.view.ViewRoot.handleMessage(ViewRoot.java:1870)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3683)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:875)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:633)
at dalvik.system.NativeStart.main(Native Method)
在我的代码中,有一些行可以修复相机的旋转和纵横比,这可能是导致问题的原因。
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
Parameters parameters = mCamera.getParameters();
List<Camera.Size> previewSizes = parameters.getSupportedPreviewSizes();
Camera.Size previewSize = previewSizes.get(4); //480h x 720w
parameters.setPreviewSize(previewSize.width, previewSize.height);
parameters.setFlashMode(Parameters.FLASH_MODE_AUTO);
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
mCamera.setParameters(parameters);
Display display = ((WindowManager)getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();
if(display.getRotation() == Surface.ROTATION_0) {
mCamera.setDisplayOrientation(90); // LINE 139
} else if(display.getRotation() == Surface.ROTATION_270) {
mCamera.setDisplayOrientation(180);
}
mCamera.startPreview();
}
有谁知道如何摆脱这个错误?