关于android：无法从图库中选择照片？

Not able to pick photo from gallery?

我能够打开画廊并获得画廊的路径为=
内容：//媒体/外部/图像/媒体/ 2
但无法在imageview中解码
这是我的代码

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

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b=(Button) findViewById(R.id.Button01);
b.setOnClickListener(new OnClickListener() {

public void onClick(View arg0) {

// in onCreate or any event where your want the user to
// select a file
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(intent,IMAGE_PICK);
}
});
}

//UPDATED
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == IMAGE_PICK) {
Uri selectedImageUri = data.getData();

//OI FILE Manager
filemanagerstring = selectedImageUri.getPath();

//MEDIA GALLERY
selectedImagePath = getPath(selectedImageUri);

if(selectedImagePath!=null)
{
path = selectedImageUri.toString();
m1.setPath(path);

BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 4;

Bitmap yourSelectedImage = BitmapFactory.decodeFile(path, options);
ImageButton img2=(ImageButton)findViewById(R.id.widget27);
img2.setImageBitmap(yourSelectedImage);
Toast.makeText(getBaseContext(), path, 1000).show();

}

}
}
}
public String getPath(Uri uri) {

String [] proj={MediaStore.Images.Media.DATA};
Cursor cursor = managedQuery(uri,
proj, // Which columns to return
null, // WHERE clause; which rows to return (all rows)
null, // WHERE clause selection arguments (none)
null); // Order-by clause (ascending by name)
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();

return cursor.getString(column_index);

}
}

请提前帮助谢谢