Android Content Uri to FilePath


public  void uriToFilePath(Context context,Uri uri){
       String filePath;
       if (uri != null && "file".equals(uri.getScheme())) {
           filePath = uri.getPath();
        } else {
            filePath = filenameFromUri(context,uri);
        }
}

public String filenameFromUri(Context context, Uri uri) {
       String filePath = getFilePathFromCursor(context, uri);
       if (TextUtils.isEmpty(filePath)) {
           filePath = getFilePathFromInputStream(context, uri);
       }
       return filePath;
}

@Nullable
private String getFilePathFromCursor(Context context, Uri uri) {
        String filePath = null;
        Cursor cursor = null;
        try {
            String[] filePathColumn = {MediaStore.Images.Media.DATA};
            cursor = context.getContentResolver().query(uri, filePathColumn, null, null, null);
            cursor.moveToFirst();
            int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
            filePath = cursor.getString(columnIndex);
            cursor.close();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (cursor != null) {
                cursor.close();
            }
        }
        return filePath;
  }

private String getFilePathFromInputStream(Context context, Uri uri) {
        String filePath = "";
        InputStream inputStream = null;
        try {
            inputStream = context.getContentResolver().openInputStream(uri);
            Bitmap bitmap = BitmapFactory.decodeStream(inputStream, null, getBitMapOptions(context, uri));
            inputStream.close();
            filePath = saveImg(bitmap, FileUtil.getTempFileName());
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (inputStream != null) {
                try {
                    inputStream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return filePath;
    }

public BitmapFactory.Options  getBitMapOptions(Context context, Uri uri) throws Exception{

        BitmapFactory.Options options= new BitmapFactory.Options();
        options.inJustDecodeBounds = true;
        InputStream stream = context.getContentResolver().openInputStream(uri);
        BitmapFactory.decodeStream(stream, null, options);
        stream.close();
        int width = options.outWidth;
        int height = options.outHeight;
        if (width > height) {
            int temp = width;
            width = height;
            height = temp;
        }
        int sampleRatio = Math.max(width / 900, height / 1600);
        options = new BitmapFactory.Options();
        options.inSampleSize = sampleRatio;
        return options;
    }

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转载自blog.csdn.net/huagbo/article/details/60956045