安卓：hardware.Camera焦点方法不会对某些设备

Question

我使用这些方法来激活上触摸重点SurFaceView

private SurfaceView surfaceiew; 
private CameraSource camSource; 
private Camera camera; 
private Camera.Parameters params; 



private void initCameraFocusListener() { 
    surfaceView.setOnTouchListener(new View.OnTouchListener() { 
     @Override 
     public boolean onTouch(View v, MotionEvent event) { 

      cameraFocus(event, camSource, Camera.Parameters.FOCUS_MODE_AUTO); 

      return false; 
     } 
    }); 

} 




// camera focus method 
private boolean cameraFocus(MotionEvent event, @NonNull CameraSource cameraSource, @NonNull String focusMode) { 
    Field[] declaredFields = CameraSource.class.getDeclaredFields(); 


    int pointerId = event.getPointerId(0); 
    int pointerIndex = event.findPointerIndex(pointerId); 
    // Get the pointer's current position 
    float x = event.getX(pointerIndex); 
    float y = event.getY(pointerIndex); 

    float touchMajor = event.getTouchMajor(); 
    float touchMinor = event.getTouchMinor(); 

    Rect touchRect = new Rect((int)(x - touchMajor/2), (int)(y - touchMinor/2), (int)(x + touchMajor/2), (int)(y + touchMinor/2)); 

    Rect focusArea = new Rect(); 

    focusArea.set(touchRect.left * 2000/surfaceView.getWidth() - 1000, 
      touchRect.top * 2000/surfaceView.getHeight() - 1000, 
      touchRect.right * 2000/surfaceView.getWidth() - 1000, 
      touchRect.bottom * 2000/surfaceView.getHeight() - 1000); 

    // Submit focus area to camera 

    ArrayList<Camera.Area> focusAreas = new ArrayList<Camera.Area>(); 
    focusAreas.add(new Camera.Area(focusArea, 1000)); 

    for (Field field : declaredFields) { 
     if (field.getType() == Camera.class) { 
      field.setAccessible(true); 
      try { 
       camera = (Camera) field.get(cameraSource); 
       if (camera != null) { 
        params = camera.getParameters(); 
        params.setFocusMode(focusMode); 
        params.setFocusAreas(focusAreas); 
        camera.setParameters(params); 

        // Start the autofocus operation 

        camera.autoFocus(new Camera.AutoFocusCallback() { 
         @Override 
         public void onAutoFocus(boolean b, Camera camera) { 
          // currently set to auto-focus on single touch 
         } 
        }); 
        return true; 
       } 

       return false; 
      } catch (IllegalAccessException e) { 
       e.printStackTrace(); 
      } 

      break; 
     } 
    } 



    return false; 
} 

它的大多数设备上都可以正常使用工作，但我发现，它不适用于使用Android 5.0版本的Huawei Honor 5x。

奇怪的部分是方法而不是做它的工作，它把我带到上一页（活动）。

如何正确使用CameraSource和SurfaceView进行触摸自动对焦？

Answer 1

我想问题是因为我使用的是弃用类：相机