我在我的应用程序中实现了以下代码。
previewRequestBuilder.set(CaptureRequest.CONTROL_EFFECT_MODE,CameraMetadata.CONTROL_EFFECT_MODE_NEGATIVE);
它已经在Mi9t、OnePlus 7 Pro、搭载Android 10的华为P20上进行了测试,但无法正常工作。而在搭载Android 9的设备上(红米5和OnePlus 5T)。它没有显示预览的负面影响。
我错过了什么吗?
编辑:当在菜单项上捕获单击时,两个捕获请求都会更新。它在Android 9设备上运行良好。
public class MainActivity extends AppCompatActivity{
private static final CaptureRequest.Key<Integer> EFFECT = CaptureRequest.CONTROL_EFFECT_MODE;
....
public boolean onMenuItemClick(MenuItem item) {
switch (item.getItemId()){
case R.id.negative:
setCameraPreference(EFFECT,CameraMetadata.CONTROL_EFFECT_MODE_NEGATIVE);
return true;
case R.id.aqua:
setCameraPreference(EFFECT,CameraMetadata.CONTROL_EFFECT_MODE_AQUA);
return true;
case R.id.solarize:
setCameraPreference(EFFECT,CameraMetadata.CONTROL_EFFECT_MODE_SOLARIZE);
return true;
case R.id.blackboard:
setCameraPreference(EFFECT,CameraMetadata.CONTROL_EFFECT_MODE_BLACKBOARD);
return true;
case R.id.sepia:
setCameraPreference(EFFECT,CameraMetadata.CONTROL_EFFECT_MODE_SEPIA);
return true;
case R.id.posterize:
setCameraPreference(EFFECT,CameraMetadata.CONTROL_EFFECT_MODE_POSTERIZE);
return true;
case R.id.whiteboard:
setCameraPreference(EFFECT,CameraMetadata.CONTROL_EFFECT_MODE_WHITEBOARD);
return true;
case R.id.effectOff:
setCameraPreference(EFFECT,CameraMetadata.CONTROL_EFFECT_MODE_OFF);
}
return false;
}
private void setCameraPreference(CaptureRequest.Key<Integer> key,int value){
previewRequestBuilder.set(key,value);
pictureRequestBuilder.set(key,value);
updatePreview();
}
protected void updatePreview() {
if (null == cameraDevice) {
}
try {
captureSession.setRepeatingRequest(previewRequestBuilder.build(), null, null);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
仅当按下按钮并更新捕获请求后,才会调用以下方法。
protected void takePicture() {
if (null == cameraDevice) {
return;
}
int rotation = getWindowManager().getDefaultDisplay().getRotation();
manager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
try {
characteristics = manager.getCameraCharacteristics(cameraDevice.getId());
pictureRequestBuilder.addTarget(imageReader.getSurface());
pictureRequestBuilder.set(CaptureRequest.JPEG_ORIENTATION, CameraTools.getJpegOrientation(characteristics, rotation));
file = CameraTools.createFilePhoto(folder);
imageReader.setOnImageAvailableListener(imageListener, null);
captureSession.capture(pictureRequestBuilder.build(), captureCallback, null);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
EDIT2:我通过以下方式检查了设备的可用效果:
int effects[] = characteristics.get(CameraCharacteristics.CONTROL_AVAILABLE_EFFECTS);
for (int effect : effects){
Log.d("camera2d", "Effects available: "+effect);
结果:
2020-05-06 11:41:44.998 24702-24702/it.runningexamples.recamera2 D/camera2d: Effects available: 0
2020-05-06 11:41:44.998 24702-24702/it.runningexamples.recamera2 D/camera2d: Effects available: 1
2020-05-06 11:41:44.998 24702-24702/it.runningexamples.recamera2 D/camera2d: Effects available: 2
2020-05-06 11:41:44.998 24702-24702/it.runningexamples.recamera2 D/camera2d: Effects available: 3
2020-05-06 11:41:44.998 24702-24702/it.runningexamples.recamera2 D/camera2d: Effects available: 4
2020-05-06 11:41:44.998 24702-24702/it.runningexamples.recamera2 D/camera2d: Effects available: 5
2020-05-06 11:41:44.998 24702-24702/it.runningexamples.recamera2 D/camera2d: Effects available: 8
2020-05-06 11:41:44.998 24702-24702/it.runningexamples.recamera2 D/camera2d: Effects available: 7
2020-05-06 11:41:44.998 24702-24702/it.runningexamples.recamera2 D/camera2d: Effects available: 6