我只想在检测到人脸时保存图像，目前即使人脸不存在也正在保存。我只想在检测到人脸时捕获，我正在使用 android face API 进行人脸检测。
我的代码：在这里，我只想在 else 块中有面孔时才保存图像，我需要放置我的代码。根据我的代码，如果我在 else 块中开始捕获会话，我将无法访问 readerListener 那么如何执行此操作。
final ImageReader.OnImageAvailableListener readerListener = new ImageReader.OnImageAvailableListener() {
@Override
public void onImageAvailable(ImageReader reader) {
Image image = null;
try {
image = reader.acquireLatestImage();
ByteBuffer buffer = image.getPlanes()[0].getBuffer();
byte[] bytes = new byte[buffer.capacity()];
buffer.get(bytes);
save(bytes);
mBitmapToSave1 = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
mBitmapToSave = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
Bitmap scaled = Bitmap.createScaledBitmap(mBitmapToSave, width, height, true);
int w = scaled.getWidth();
int h = scaled.getHeight();
// Setting post rotate to 90
Matrix mtx = new Matrix();
mtx.postRotate(-180);
// Rotating Bitmap
mBitmapToSave = Bitmap.createBitmap(scaled, 0, 0, w, h, mtx, true);
// mBitmapToSave = Bitmap.createBitmap(width+rowPadding/pixelStride,height, Bitmap.Config.RGB_565);
// mBitmapToSave.copyPixelsToBuffer(buffer);
if (detector.isOperational() && mBitmapToSave != null) {
Frame frame = new Frame.Builder().setBitmap(mBitmapToSave).build();
SparseArray<Face> faces = detector.detect(frame);
for (index = 0; index < faces.size(); ++index) {
Face face = faces.valueAt(index);
}if (faces.size() == 0) {
MediaPlayer mediaPlayer = MediaPlayer.create(getApplicationContext(), R.raw.not);
mediaPlayer.start();
//Toast.makeText(AndroidCamera2API.this, "Face Not detected Adjust Camera Properly", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(AndroidCamera2API.this, "Face Found " + "\n", Toast.LENGTH_SHORT).show();
}
}
}catch(FileNotFoundException e){
e.printStackTrace();
} catch(IOException e){
e.printStackTrace();
} finally{
if (image != null) {
image.close();
}
}
}
private void save(byte[] bytes) throws IOException {
OutputStream output = null;
try {
output = new FileOutputStream(file);
output.write(bytes);
} finally {
if (null != output) {
output.close();
}
}
}
};
reader.setOnImageAvailableListener(readerListener, mBackgroundHandler);
final CameraCaptureSession.CaptureCallback captureListener = new CameraCaptureSession.CaptureCallback() {
@Override
public void onCaptureCompleted(CameraCaptureSession session, CaptureRequest request, TotalCaptureResult result) {
super.onCaptureCompleted(session, request, result);
Toast.makeText(AndroidCamera2API.this, "Saved:" + file, Toast.LENGTH_SHORT).show();
uploadMultipart();
createCameraPreview();
}
}
};
cameraDevice.createCaptureSession(outputSurfaces, new CameraCaptureSession.StateCallback() {
@Override
public void onConfigured(CameraCaptureSession session) {
try {
session.capture(captureBuilder.build(), captureListener, mBackgroundHandler);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
@Override
public void onConfigureFailed(CameraCaptureSession session) {
}
}, mBackgroundHandler);
mBitmapToSave = null;
} catch(CameraAccessException e){
e.printStackTrace();
}
}