我们的应用程序显示相机预览,在所有手机上似乎都正常工作,但在Motorola Droid上设置相机参数时会出现运行时异常:
java.lang.RuntimeException: setParameters failed
at android.hardware.Camera.native_setParameters(Native Method)
at android.hardware.Camera.setParameters(Camera.java:611)
at com.highwaynorth.andrometer.CameraPreviewSurfaceView.surfaceChanged(CameraPreviewSurfaceView.java:57)
at android.view.SurfaceView.updateWindow(SurfaceView.java:460)
at android.view.SurfaceView.dispatchDraw(SurfaceView.java:287)
at android.view.ViewGroup.drawChild(ViewGroup.java:1525)
这里是surfaceChanged()的代码,大部分是从APIDemos中获取的。
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
// Now that the size is known, set up the camera parameters and begin
// the preview.
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewSize(w, h);
parameters.setPictureFormat(PixelFormat.JPEG);
parameters.setPreviewFormat(PixelFormat.YCbCr_422_SP);
parameters.setPreviewFrameRate(1);
mCamera.setParameters(parameters);
mCamera.startPreview();
有人知道我们设置参数时出了什么问题,导致 Motorola Droid 出现异常吗?