[英]Take picture with front camera in android service
我需要在android服務中使用后置攝像頭拍照,但是在閱讀文檔后,似乎您需要SurfaceView
是否可以在不向用戶顯示任何東西的情況下拍照?
編輯:這行得通嗎?
SurfaceTexture surfaceTexture = new SurfaceTexture(10);
Camera camera = Camera.open();
camera.getParameters().setPreviewSize(1, 1);
camera.setPreviewTexture(surfaceTexture);
camera.startPreview();
camera.takePicture(null, pictureCallback, null);
100%工作。 使用服務從前置攝像頭單擊圖片。
public class MyService extends Service {
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public void onCreate() {
super.onCreate();
CapturePhoto();
}
private void CapturePhoto() {
Log.d("kkkk","Preparing to take photo");
Camera camera = null;
Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
int frontCamera = 1;
//int backCamera=0;
Camera.getCameraInfo(frontCamera, cameraInfo);
try {
camera = Camera.open(frontCamera);
} catch (RuntimeException e) {
Log.d("kkkk","Camera not available: " + 1);
camera = null;
//e.printStackTrace();
}
try {
if (null == camera) {
Log.d("kkkk","Could not get camera instance");
} else {
Log.d("kkkk","Got the camera, creating the dummy surface texture");
try {
camera.setPreviewTexture(new SurfaceTexture(0));
camera.startPreview();
} catch (Exception e) {
Log.d("kkkk","Could not set the surface preview texture");
e.printStackTrace();
}
camera.takePicture(null, null, new Camera.PictureCallback() {
@Override
public void onPictureTaken(byte[] data, Camera camera) {
File pictureFileDir=new File("/sdcard/CaptureByService");
if (!pictureFileDir.exists() && !pictureFileDir.mkdirs()) {
pictureFileDir.mkdirs();
}
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyymmddhhmmss");
String date = dateFormat.format(new Date());
String photoFile = "ServiceClickedPic_" + "_" + date + ".jpg";
String filename = pictureFileDir.getPath() + File.separator + photoFile;
File mainPicture = new File(filename);
try {
FileOutputStream fos = new FileOutputStream(mainPicture);
fos.write(data);
fos.close();
Log.d("kkkk","image saved");
} catch (Exception error) {
Log.d("kkkk","Image could not be saved");
}
camera.release();
}
});
}
} catch (Exception e) {
camera.release();
}
}
}
您可以將SurfaceView
Width
和Height
設置為1dp
, margintop
為10
,這樣它就不會在屏幕上顯示它,但是它的功能正常,並且可以拍攝照片而不會向用戶顯示Surface View
<SurfaceView
android:layout_width="1dp"
android:layout_height="1dp"
android:layout_marginTop="-10dp"
...
/>
在這種情況下,您可以只使用SurfaceTexture
SurfaceTexture surfaceTexture = new SurfaceTexture(10);
Camera camera = Camera.open();
camera.getParameters().setPreviewSize(1, 1);
camera.setPreviewTexture(surfaceTexture);
對的,這是可能的。 調用您的Camera Callback方法從相機拍攝照片, 不要指定預覽的大小,只需啟動預覽即可使用。
忽略此步驟:
param.setPreviewSize(122,133);
或使用
param.setPreviewSize(1, 1);
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