java从Intent获取图像uri（MediaStore.ACTION\u image\u CAPTURE）

Question

嗨，当我这样做的时候

 Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
        startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
    }

在onActivityResult中，我从相机应用程序的数据意图中获取图像的缩略图

Bundle extras = data.getExtras();
Bitmap imageBitmap = (Bitmap) extras.get("data");
mImageView.setImageBitmap(imageBitmap);

我用的是像这样的位图

但是如果我想要imageuri，这样我就可以从中获得完整大小的图像了。我尝试从上面的意图中获取图像uri

            Uri uri = data.getData();
            if (uri != null) {
                Log.d(TAG, uri.toString());
            }else{
                Log.d(TAG,"uri is null");
            }

这样做，我得到的uri在我的日志中为空。因此，任何人都可以让我知道如何获取图像uri。我不想使用额外的输出并指定自己的路径。提前谢谢

Answer 1

有一个well documented bug，出现在低分辨率设备中。检查this thread以了解解决方法

Answer 2

在某些设备中有一个与此相关的bug。看看this了解如何解决它

Answer 3

In some devices, the Uri is null in onActivityForResult(). So you need to set Uri to placing the captured image.

Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    // If there any applications that can handle this intent then call the intent.
    if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
        Uri fileUri = Uri.fromFile(getOutputMediaFile());
        takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
        startActivityForResult(takePictureIntent, CAMERA_PICKER);
    }

public File getOutputMediaFile() {
        // To be safe, you should check that the SDCard is mounted
        // using Environment.getExternalStorageState() before doing this.

        File mediaStorageDir;
        // If the external directory is writable then then return the External pictures directory.
        if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
            mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "MyApp");
        } else {
            mediaStorageDir = Environment.getDownloadCacheDirectory();
        }

        // Create the storage directory if it does not exist
        if (!mediaStorageDir.exists()) {
            if (!mediaStorageDir.mkdirs()) {
                Log.d("MyCameraApp", "failed to create directory");
                return null;
            }
        }

        // Create a media file name
        String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(new Date());
        File mediaFile;
        mediaFile = new File(mediaStorageDir.getPath() + File.separator + "IMG_" + timeStamp + ".jpg");

        return mediaFile;
    }