MediaStore.EXTRA_OUTPUT数据呈现空，其他的方式来保存的照片？ [英] MediaStore.EXTRA_OUTPUT renders data null, other way to save photos?

问题描述

谷歌提供的这种多功能的code通过一个意图拍摄照片：

Google offers this versatile code for taking photos via an intent:

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    // create Intent to take a picture and return control to the calling application
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE); // create a file to save the image
    intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name

    // start the image capture Intent
    startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}

现在的问题是，如果你和我一样，你想通过照片作为群众演员，用 EXTRA_OUTPUT 看似有照片数据逃跑，使后续行动想意图的数据为空。

The problem is that if you're like me and you want to pass the photos as extras, using EXTRA_OUTPUT seemingly runs off with the photo data and makes subsequent actions think the intent data is null.

看来这是与Android一大错误。

It appears this is a big bug with Android.

我想拍摄照片​​，然后将其显示为一个新的视图中的缩略图。我希望把它保存在用户的画廊一个全尺寸的图像。有谁知道一种方法，而无需使用指定图像的位置 EXTRA_OUTPUT ？

I'm trying to take a photo then display it as a thumbnail in a new view. I'd like to have it saved as a full sized image in the user's gallery. Does anyone know a way to specify the image location without using EXTRA_OUTPUT?

下面是我目前有：

public void takePhoto(View view) {
    Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);
//  takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);

    startActivityForResult(takePictureIntent, CAMERA_REQUEST_CODE);
}

/** Create a file Uri for saving an image or video */
private static Uri getOutputMediaFileUri(int type){
      return Uri.fromFile(getOutputMediaFile(type));
}

/** Create a File for saving an image or video */
@SuppressLint("SimpleDateFormat")
private static File getOutputMediaFile(int type){

    File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
              Environment.DIRECTORY_PICTURES), "JoshuaTree");

    if (! mediaStorageDir.exists()){
        if (! mediaStorageDir.mkdirs()){
            Log.d("JoshuaTree", "failed to create directory");
            return null;
        }
    }

    // Create a media file name
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
    File mediaFile;
    if (type == MEDIA_TYPE_IMAGE){
        mediaFile = new File(mediaStorageDir.getPath() + File.separator +
        "IMG_"+ timeStamp + ".jpg");
    } else {
        return null;
    }

    return mediaFile;
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == CAMERA_REQUEST_CODE) {
        if (resultCode == RESULT_OK) {
            handleSmallCameraPhoto(data);
        }
    }
}


private void handleSmallCameraPhoto(Intent intent) {
    Bundle extras = intent.getExtras();
    mImageBitmap = (Bitmap) extras.get("data");
    Intent displayIntent = new Intent(this, DisplayPhotoActivity.class);
    displayIntent.putExtra("BitmapImage", mImageBitmap);
    startActivity(displayIntent);
}

}

推荐答案

如果您指定MediaStore.EXTRA_OUTPUT，拍摄的图像将被写入到该路径，并且没有数据将提供给onActivityResult。你可以阅读从您所指定的图像。

If you specified MediaStore.EXTRA_OUTPUT, the image taken will be written to that path, and no data will given to onActivityResult. You can read the image from what you specified.

在这里见另一个解决同一个问题： Android摄像头：数据意图返回null

See another solved same question here: Android Camera : data intent returns null

这篇关于MediaStore.EXTRA_OUTPUT数据呈现空，其他的方式来保存的照片？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！