我将相机加载到表面纹理中，我想通过单击按钮拍摄照片。我怎么做？
我希望当应用程序打开并且相机打开时，用户可以单击按钮并拍照。该图片应保存在手机存储器中。
这是我的代码：
public class zambelislightscamapp extends Activity {
private static final int REQUEST_CAMERA_PERMISSION_RESULT = 0;
private static final int REQUEST_WRITE_EXTERNAL_STORAGE_PERMISSION_RESULT = 1;
private TextureView mTextureView;
private TextureView.SurfaceTextureListener mSurfaceTextureListener = new TextureView.SurfaceTextureListener() {
@Override
public void onSurfaceTextureAvailable(SurfaceTexture surface, int width, int height) {
setupCamera(width, height);
connectCamera();
}
@Override
public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width, int height) {
}
@Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
return false;
}
@Override
public void onSurfaceTextureUpdated(SurfaceTexture surface) {
}
};
private CameraDevice mCameraDevice; private CameraDevice.StateCallback mCameraDeviceStateCallback = new CameraDevice.StateCallback() {
@Override
public void onOpened(CameraDevice camera) {
mCameraDevice = camera;
startPreview();
// Toast.makeText(getApplicationContext(),
// "Camera connection made!", Toast.LENGTH_SHORT).show();
}
@Override
public void onDisconnected(CameraDevice camera) {
camera.close();
mCameraDevice = null;
}
@Override
public void onError(CameraDevice camera, int error) {
camera.close();
mCameraDevice = null;
}
};
private HandlerThread mBackgroundHandlerThread;
private Handler mBackgroundHandler;
private String mCameraId;
private Size mPreviewSize;
private Size mVideoSize;
private MediaRecorder mMediaRecorder;
private int mTotalRotation;
private CaptureRequest.Builder mCaptureRequestBuilder;
private ImageButton mRecordImageButton;
//silvia button #1
private ImageButton clickButtonPlusImg;
private ImageButton clickButtonMinusImg;
private Button backButton;
private boolean mIsRecording = false;
private File mVideoFolder;
private String mVideoFileName;
private Button btnCapture = null;
private static SparseIntArray ORIENTATIONS = new SparseIntArray();
static {
ORIENTATIONS.append(Surface.ROTATION_0, 0);
ORIENTATIONS.append(Surface.ROTATION_90, 90);
ORIENTATIONS.append(Surface.ROTATION_180, 180);
ORIENTATIONS.append(Surface.ROTATION_270, 270);
}
private static class CompareSizeByArea implements Comparator<Size> {
@Override @TargetApi(Build.VERSION_CODES.LOLLIPOP)
public int compare(Size lhs, Size rhs) {
return Long.signum((long) lhs.getWidth() * lhs.getHeight() /
(long) rhs.getWidth() * rhs.getHeight());
}
}
int windowwidth;
int windowheight;
private LinearLayout.LayoutParams layoutParams;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera2_video_image);
//START
windowwidth = getWindowManager().getDefaultDisplay().getWidth();
windowheight = getWindowManager().getDefaultDisplay().getHeight();
final ImageView img = (ImageView) findViewById(R.id.ImageView01);
img.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) img
.getLayoutParams();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
break;
case MotionEvent.ACTION_MOVE:
int x_cord = (int) event.getRawX();
int y_cord = (int) event.getRawY();
if (x_cord > windowwidth) {
x_cord = windowwidth;
}
if (y_cord > windowheight) {
y_cord = windowheight;
}
layoutParams.leftMargin = x_cord - 1;
layoutParams.topMargin = y_cord - 1;
img.setLayoutParams(layoutParams);
break;
default:
break;
}
return true;
}
});