从gallery kitkat android中选择图像时检索绝对路径

Question

由于我支持我的应用程序到Kitkat版本,现在在这里从库中检索文件的方式是不同的.

我更喜欢KitKat上的这个Android Gallery为Intent.ACTION_GET_CONTENT返回不同的Uri,用于从库中检索文件并成功工作但是我需要该文件的绝对路径,我得到了

content://com.android.providers.media.documents/document/image:2505

对于19以下版本我们使用uri不同使用我这样得到路径

Cursor cursor = this.getContentResolver().query(originalUri, projection, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String fpath = cursor.getString(column_index);

但是在19版本中它会给我null值如何获得用户选择的图像文件的绝对路径.

谢谢

Answer 1

这是选择文件后访问绝对路径的一种方法.

以这种方式获取KK(KitKat)的新URI格式的数据之后

content://com.android.providers.media.documents/document/image:2505

只需提取文档的ID即可

if(requestCode == GALLERY_KITKAT_INTENT_CALLED && resultCode == RESULT_OK){

    Uri originalUri = data.getData();

    final int takeFlags = data.getFlags()
                        & (Intent.FLAG_GRANT_READ_URI_PERMISSION
                        | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
    // Check for the freshest data.
    getContentResolver().takePersistableUriPermission(originalUri, takeFlags);

    /* now extract ID from Uri path using getLastPathSegment() and then split with ":"
    then call get Uri to for Internal storage or External storage for media I have used getUri()
    */

    String id = originalUri.getLastPathSegment().split(":")[1]; 
    final String[] imageColumns = {MediaStore.Images.Media.DATA };
    final String imageOrderBy = null;

    Uri uri = getUri();
    String selectedImagePath = "path";

    Cursor imageCursor = managedQuery(uri, imageColumns,
          MediaStore.Images.Media._ID + "="+id, null, imageOrderBy);

    if (imageCursor.moveToFirst()) {
        selectedImagePath = imageCursor.getString(imageCursor.getColumnIndex(MediaStore.Images.Media.DATA));
    }
    Log.e("path",selectedImagePath ); // use selectedImagePath 
}else if() {
      // for older version use existing code here
}

// By using this method get the Uri of Internal/External Storage for Media
private Uri getUri() {
    String state = Environment.getExternalStorageState();
    if(!state.equalsIgnoreCase(Environment.MEDIA_MOUNTED))
        return MediaStore.Images.Media.INTERNAL_CONTENT_URI;

    return MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
}