Android - How To Take A Picture Based On A Timer

I want to implement a service where, specified a time of the day, the phone will take a picture automatically. Since now, I followed the official tutorial: public class PhotoHandl

Solution 1:

Use this tutorial to trigger the camera to take a picture whenever you want.

Manifest:

<uses-sdkandroid:minSdkVersion="15" /><uses-permissionandroid:name="android.permission.CAMERA"/><uses-permissionandroid:name="android.permission.WRITE_EXTERNAL_STORAGE"/><applicationandroid:icon="@drawable/ic_launcher"android:label="@string/app_name" ><activityandroid:name="de.vogella.camera.api.MakePhotoActivity"android:label="@string/app_name" ><intent-filter><actionandroid:name="android.intent.action.MAIN" /><categoryandroid:name="android.intent.category.LAUNCHER" /></intent-filter></activity></application>

Layout:

<Button
    android:id="@+id/captureFront"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true"
    android:onClick="onClick"
    android:text="Make Photo" />

To save to SD card:

publicclassPhotoHandlerimplementsPictureCallback {

  privatefinal Context context;

  publicPhotoHandler(Context context) {
    this.context = context;
  }

  @OverridepublicvoidonPictureTaken(byte[] data, Camera camera) {

    FilepictureFileDir= getDir();

    if (!pictureFileDir.exists() && !pictureFileDir.mkdirs()) {

      Log.d(MakePhotoActivity.DEBUG_TAG, "Can't create directory to save image.");
      Toast.makeText(context, "Can't create directory to save image.",
          Toast.LENGTH_LONG).show();
      return;

    }

    SimpleDateFormatdateFormat=newSimpleDateFormat("yyyymmddhhmmss");
    Stringdate= dateFormat.format(newDate());
    StringphotoFile="Picture_" + date + ".jpg";

    Stringfilename= pictureFileDir.getPath() + File.separator + photoFile;

    FilepictureFile=newFile(filename);

    try {
      FileOutputStreamfos=newFileOutputStream(pictureFile);
      fos.write(data);
      fos.close();
      Toast.makeText(context, "New Image saved:" + photoFile,
          Toast.LENGTH_LONG).show();
    } catch (Exception error) {
      Log.d(MakePhotoActivity.DEBUG_TAG, "File" + filename + "not saved: "
          + error.getMessage());
      Toast.makeText(context, "Image could not be saved.",
          Toast.LENGTH_LONG).show();
    }
  }

  private File getDir() {
    FilesdDir= Environment
      .getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
    returnnewFile(sdDir, "CameraAPIDemo");
  }
} 

To take a photo

publicclassMakePhotoActivityextendsActivity {
  privatefinalstaticStringDEBUG_TAG="MakePhotoActivity";
  private Camera camera;
  privateintcameraId=0;

  @OverridepublicvoidonCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    // do we have a camera?if (!getPackageManager()
        .hasSystemFeature(PackageManager.FEATURE_CAMERA)) {
      Toast.makeText(this, "No camera on this device", Toast.LENGTH_LONG)
          .show();
    } else {
      cameraId = findFrontFacingCamera();
      if (cameraId < 0) {
        Toast.makeText(this, "No front facing camera found.",
            Toast.LENGTH_LONG).show();
      } else {
        camera = Camera.open(cameraId);
      }
    }
  }

  publicvoidonClick(View view) {
    camera.takePicture(null, null,
        newPhotoHandler(getApplicationContext()));
  }

  privateintfindFrontFacingCamera() {
    intcameraId= -1;
    // Search for the front facing cameraintnumberOfCameras= Camera.getNumberOfCameras();
    for (inti=0; i < numberOfCameras; i++) {
      CameraInfoinfo=newCameraInfo();
      Camera.getCameraInfo(i, info);
      if (info.facing == CameraInfo.CAMERA_FACING_FRONT) {
        Log.d(DEBUG_TAG, "Camera found");
        cameraId = i;
        break;
      }
    }
    return cameraId;
  }

  @OverrideprotectedvoidonPause() {
    if (camera != null) {
      camera.release();
      camera = null;
    }
    super.onPause();
  }

} 

EDIT: cameraId is not always set to -1, it is just a placeholder while you are looking for the front facing camera. When it is found, cameraId is set to the index of that camera