我正在使用Camera API创建Camera应用程序1.我在片段中执行此操作。我有FrameLayout,我添加了相机,还有一个按钮用于捕捉。但拍照后相机不能保存照片。我不知道问题出在哪里,我第一次使用相机API。你能帮我找到解决方案吗?
其他问题对我没有帮助。他们的代码不起作用。
我只在纵向模式下使用的相机。它表明,我添加了相机的权限和写入外部存储。
我有一个类,我正在扩展SurfaceView。让我告诉你代码。
public class ShowCamera extends SurfaceView implements SurfaceHolder.Callback{
Camera camera;
SurfaceHolder holder;
public ShowCamera(Context context, Camera camera) {
super(context);
this.camera = camera;
holder = getHolder();
holder.addCallback(this);
}
@Override
public void surfaceCreated(SurfaceHolder surfaceHolder) {
Camera.Parameters params = camera.getParameters();
List<Camera.Size> sizes = params.getSupportedPictureSizes();
Camera.Size mSize = null;
for (Camera.Size size : sizes){
mSize = size;
}
camera.setDisplayOrientation(90);
params.setRotation(90);
params.setPictureSize(mSize.width, mSize.height);
camera.setParameters(params);
try {
camera.setPreviewDisplay(surfaceHolder);
camera.startPreview();
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {
}
@Override
public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
camera.stopPreview();
camera.release();
}
}
好的,这是相机的片段。
public class CameraActivity extends BaseFragment{
View mainView;
FrameLayout cameraLayout;
Camera camera;
ShowCamera showCamera;
ImageButton captureImage;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
mainView = inflater.inflate(R.layout.camera_fragment, container, false);
cameraLayout = (FrameLayout) mainView.findViewById(R.id.cameraContainer);
captureImage = (ImageButton) mainView.findViewById(R.id.imageButton);
camera = Camera.open();
showCamera = new ShowCamera(getActivity(), camera);
cameraLayout.addView(showCamera);
capture();
return mainView;
}
Camera.PictureCallback mPictureCallback = new Camera.PictureCallback() {
@Override
public void onPictureTaken(byte[] bytes, Camera camera) {
if(bytes != null){
Bitmap bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
if(bitmap != null){
File file = new File(String.valueOf(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM)));
if(!file.isDirectory()){
file.mkdir();
}
file = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM),
System.currentTimeMillis() + ".jpg");
try {
FileOutputStream fileOutputStream = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fileOutputStream);
fileOutputStream.flush();
fileOutputStream.close();
} catch (Exception e){
e.printStackTrace();
}
}
}
}
};
public void capture(){
captureImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(camera != null){
camera.takePicture(null, null, mPictureCallback);
}
}
});
}
}
帮我找到解决方案。谢谢你的阅读。