在Android上怎么指定拍摄的图像质量？[副本]

Question

我找到了这两部分代码，介绍了如何在Android中从摄像头中拍摄照片：

在onCreate()方法内部：

        Button capture;

        capture.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {

                Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

                startActivityForResult(cameraIntent, TAKE_PHOTO_CODE);
            }
        });

而且

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == TAKE_PHOTO_CODE && resultCode == RESULT_OK) {
        Bundle extras = data.getExtras();
        Bitmap imageBitmap = (Bitmap) extras.get("data");

    }
}

Answer 1

请检查下面的解决方案以了解您的问题。

 public static File IMAGE_PATH = null;
     public static final int CAMERA_REQUEST = 100;
         private void openCameraApp(Context mContext) {
            Intent picIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE).addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);


            String file_path = Environment.getExternalStorageDirectory().toString() +
                    "/" + mContext.getResources().getString(R.string.app_name);

            File dir = new File(file_path);
            if (!dir.exists())
                dir.mkdirs();
            IMAGE_PATH = new File(dir, mContext.getResources().getString(R.string.app_name) +  System.currentTimeMillis() + ".png");


            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                picIntent.putExtra(MediaStore.EXTRA_OUTPUT, FileProvider.getUriForFile(mContext, mContext.getPackageName()+".fileprovider", IMAGE_PATH));
            }
            else {
                picIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(IMAGE_PATH));
            }

            ((Activity) mContext).startActivityForResult(picIntent, CAMERA_REQUEST);

        }