应用程序在 SurfaceCreated 的 setPreviewDisplay(holder) 崩溃（在任何事情开始之前，必须强制关闭一个对话框，然后应用程序退出），我不知道为什么。请指教。下面是我的代码。
public void onCreate(Bundle savedInstanceState) {
cameraPreview = new CameraPreview();//CameraPreview has a methos to open the Camera
cameraObject = CameraPreview.getCameraInstance();
mHolder = previewSurface.getHolder();//previewSurface is the SurfaceView declared in XML and then I'm doinf findViewById
mHolder.addCallback(this);
}
public void surfaceCreated(SurfaceHolder holder) {
// The Surface has been created, now tell the camera where to draw the preview.
try {
cameraObject.setPreviewDisplay(holder); //CRASHES HERE
//cameraObject.startPreview();
} catch (IOException e) {
Log.d(TAG, "Error setting camera preview: " + e.getMessage());
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
// empty. Take care of releasing the Camera preview in your activity.
}
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
// If your preview can change or rotate, take care of those events here.
// Make sure to stop the preview before resizing or reformatting it.
if (mHolder.getSurface() == null){
// preview surface does not exist
return;
}
// stop preview before making changes
try {
cameraObject.stopPreview();
} catch (Exception e){
// ignore: tried to stop a non-existent preview
}
// make any resize, rotate or reformatting changes here
// start preview with new settings
try {
cameraObject.setPreviewDisplay(mHolder);
cameraObject.startPreview();
} catch (Exception e){
Log.d(TAG, "Error starting camera preview: " + e.getMessage());
}
}