I am working on an activity and associated tasks that allow users to select an image to use as their profile picture from the Gallery. Once the selection is made the image is uploaded to a web server via its API. I have this working regular images from the gallery. However, if the image selected is from a Picasa Web Album nothing is returned.
I have done a lot of debugging and narrowed the problem down to this method.
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
//cursor is null for picasa images
if(cursor!=null)
{
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
else return null;
}
Picasa images return a null cursor. MediaStore.Images.Media.DATA is not null for them, however. It only returns an #id, so I am guessing that there is no actual bitmap data at the address. Are Picasa images stored locally on the device at all?
I also noticed from the documentation that MediaStore.Images.ImageColumns.PICASA_ID exists. This value exists for selected picasa images but not other gallery images. I was thinking I could use this value to get a URL for the image if it is not store locally but I can not find any information about it anywhere.
I have faced the exact same problem,
Finally the solution I found, was to launch an ACTION_GET_CONTENT intent instead of an ACTION_PICK, then make sure you provide a MediaStore.EXTRA_OUTPUT extra with an uri to a temporary file.
Here is the code to start the intent :
public class YourActivity extends Activity {
File mTempFile;
int REQUEST_CODE_CHOOSE_PICTURE = 1;
(...)
public showImagePicker() {
mTempFile = getFileStreamPath("yourTempFile");
mTempFile.getParentFile().mkdirs();
Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);
intent.setType("image/*");
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(mTempFile));
intent.putExtra("outputFormat",Bitmap.CompressFormat.PNG.name());
startActivityForResult(intent,REQUEST_CODE_CHOOSE_PICTURE);
}
(...)
}
You might need to mTempFile.createFile()
Then in onActivityResult, you will be able to get the image this way
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
case REQUEST_CODE_CHOOSE_PICTURE:
Uri imageUri = data.getData();
if (imageUri == null || imageUri.toString().length() == 0) {
imageUri = Uri.fromFile(mTempFile);
file = mTempFile;
}
if (file == null) {
//use your current method here, for compatibility as some other picture chooser might not handle extra_output
}
}
Hope this helps
Then you should delete your temporary file on finish (it is in internal storage as is, but you can use external storage, I guess it would be better).
Why are you using the managedQuery() method? That method is deprecated.
If you want to convert a Uri to a Bitmap object try this code:
public Bitmap getBitmap(Uri uri) {
Bitmap orgImage = null;
try {
orgImage = BitmapFactory.decodeStream(getApplicationContext().getContentResolver().openInputStream(uri));
} catch (FileNotFoundException e) {
// do something if you want
}
return orgImage;
}
Related
I have seen a couple of other questions on S/O related to this, but the one that was closest to my issue doesn't seem to have got many responses (Xiaomi MI device not picking image from Gallery). Hoping this question will have better luck.
I am trying to select an image from the gallery of the phone, and pass the image path to another activity where it get previewed for the user.
I've tested this on two other devices (Moto E and something called Coolpad?) and they both seem to be working just fine.
(Debugging Android source code doesn't seem to be a practical option.)
In the main activity, on a UI trigger, I launch the gallery picker with the following code:
private void dispatchPickPictureIntent() {
Intent pickPictureIntent = new Intent(Intent.ACTION_PICK);
pickPictureIntent.setType("image/*");
startActivityForResult(pickPictureIntent, REQUEST_IMAGE_PICK);
}
I handle the result like so:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_IMAGE_PICK && resultCode == RESULT_OK) {
Uri selectedImage = data.getData();
mCurrentPhotoPath = getRealPathFromURI(this, selectedImage);
launchUploadActivity();
}
}
private String getRealPathFromURI(Context context, Uri uri) {
Cursor cursor = null;
try {
String [] proj = {MediaStore.Images.Media.DATA};
cursor = context.getContentResolver().query(uri, proj, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
} finally {
if (cursor != null)
cursor.close();
}
}
Once I have got the file path stored in the global variable mCurrentPhotoPath the following method gets called:
private void launchUploadActivity() {
Intent intent = new Intent(HomeActivity.this, UploadActivity.class);
intent.putExtra(getString(R.string.photo_path), mCurrentPhotoPath);
startActivityForResult(intent, REQUEST_IMAGE_UPLOAD);
}
Even on the Redmi, up until here, things run smoothly. On the onCreate method of the UploadActivity, I receive the image file path string successfully.
But, then, I try to preview the image:
private void previewPhoto() {
imageView.setVisibility(View.VISIBLE);
BitmapFactory.Options options = new BitmapFactory.Options();
// Avoid OutOfMemory Exception
options.inSampleSize = 8;
// This line returns a null, only on the Xiaomi device
final Bitmap bitmap = BitmapFactory.decodeFile(photopath, options);
imageView.setImageBitmap(bitmap);
}
Now I have tried to debug this issue, but once I step into BitmapFactory's source code, I run in to a seemingly unresolved issue with Android Studio (https://stackoverflow.com/a/40566459/3438497) which renders it useless.
Any pointers on how I can proceed from here would be greatly appreciated.
So I was able to narrow down the issue to an incorrect file path. The Uri to filepath function did not get the desired result on all devices.
I used the approach suggested here:https://stackoverflow.com/a/7265235/3438497
and tweaked the code a little bit so that when picking images from gallery, I use the Uri of the image directly.
The reason is that you get file:// uri back. not content:// so content resolver doesn't work.
I am facing the similar issue in Redmi 5A. And solve the problem using following way.
Add below entities in your manifest file
android:hardwareAccelerated="false"
android:largeHeap="true"
It will work in some environments.
Refer answer at https://stackoverflow.com/a/32245018/2706551
I know how to pick photo from gallery and it always work.
The code to pick photo from gallery:
Intent intent = new Intent(Intent.ACTION_PICK,MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, REQ_GALLERY);
And code to handle result in onActivityResult():
Uri uri = data.getData();
Cursor cursor = getContext().getContentResolver().query(uri, new String[] {
MediaStore.Images.Media.DATA,
}, null, null, null);
if (cursor == null) return false;
if (cursor.moveToFirst()) {
String path = cursor.getString(0);
if (path != null) {
startPhotoEdit(new File(path), output, requestCode);
cursor.close();
return true;
}
}
cursor.close();
This time I pick them from Google Photos and the photo is still stored in cloud and not downloaded to local yet. After I pick one and it starts downloading like that:
photo_downloading
When the download task finished and return to my application, the _data column in cursor which always contains photo path is null.
Can someone help me, please.
I finally find that when photo from cloud is picked, its Uri is different. Like this:
content://com.google.android.apps.photos.contentprovider/1/1/mediakey%3A%2Flocal%253A131b7978-cc48-4206-8561-d18f99421551/ORIGINAL/NONE/2134743478
It contains mediakey instead of content in normal Uri.
So, this might be helpful:
getContentResolver().openInputStream(uri);
I tried that code and gave me error unable to decode stream filenotfoundException. So I found that the latest versions of Android Marshmallow and lollipop doesn't have the gallery application and the images uploaded to a server.
public String getPath(Uri uri) {
// just some safety built in
if( uri == null ) {
// TODO perform some logging or show user feedback
return null;
}
// try to retrieve the image from the media store first
// this will only work for images selected from gallery
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
if( cursor != null ){
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String picturePath = cursor.getString(column_index);
return picturePath;
}
// this is our fallback here
return uri.getPath();
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
Uri selectedImageUri = data.getData();
selectedImagePath = getPath(selectedImageUri);
ImageView imageView = (ImageView) findViewById(R.id.profile_picture);
imageView.setImageBitmap(BitmapFactory.decodeFile(getPath(selectedImageUri)));
}
}
}
My intent code:
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,"Select Picture"), SELECT_PICTURE);
Step #1: Get rid of getPath().
Step #2: Use an image-loading library, such as Picasso. Pass it the Uri you get from the Intent passed into onActivityResult(), and your ImageView. It will handle loading the image into the ImageView for you.
If you would prefer to load the image yourself, you will need to:
Use a ContentResolver and openInputStream() to get an InputStream for the data represented by the Uri
Use BitmapFactory.decodeStream() to load the data off the InputStream and decode it into a Bitmap
Do the above steps in a background thread, so you do not tie up the main application thread while doing that I/O (e.g., doInBackground() of an AsyncTask)
When the Bitmap is ready, put it in the ImageView while running on the main application thread (e.g., onPostExecute() of an AsyncTask)
I am dealing with Pick gallery images and show them in app also save their Path for some references in future.
I was able to Pick those images from gallery which are stored on device like in some folder like Downloads by this code:
Intent intent = new Intent (Intent.ActionPick, Android.Provider.MediaStore.Images.Media.ExternalContentUri);
intent.SetType ("image/*");
StartActivityForResult (Intent.CreateChooser (intent, "Select photo"), 0);
and in Result:
public override void OnActivityResult (int requestCode, Result resultCode, Intent data)
{
base.OnActivityResult (requestCode, resultCode, data);
case 0:
string FilePath = GetPathToImage (data.Data);
}
private string GetPathToImage(Android.Net.Uri uri)
{
string path = null;
string[] projection = new[] { Android.Provider.MediaStore.Images.Media.InterfaceConsts.Data };
using (ICursor cursor = this.Activity.ManagedQuery(uri, projection, null, null, null))
{
if (cursor != null)
{
int columnIndex = cursor.GetColumnIndexOrThrow(Android.Provider.MediaStore.Images.Media.InterfaceConsts.Data);
cursor.MoveToFirst();
path = cursor.GetString(columnIndex);
}
else
{
return uri.Path;
}
}
}
My question is : I am able to get paths of images those are placed in some local folder in gallery, but for folders like Picasa/Autobackup I am not able to get Path.
Note:For local images path starts from content://
For Other com.android....like that.
So, Is there any workaround to get paths of those images.
I don't want to do like this to just display image:
final InputStream is = getContentResolver().openInputStream(imageUri);
I need a Path.
If there is no solution, then How can we skip those images being displayed while Picking from Gallery/Photos.
PS: Known Issue
Any Suggestion is appreciated.
Thanks
I would like to implement a Picture Chooser, since there's a bug with the Recent image foler and the Download Folder the Android app crashes when selecting an image from these two folders, I would like to hide them, or open directly the Gallery folder without showing the Folder chooser panel,
This is my actual code :
Intent intent = new Intent (Intent.ACTION_GET_CONTENT);
startActivityForResult (intent, 1000);
and in the on Result Method :
#Override
protected void onActivityResult (int requestCode, int resultCode, Intent intent) {
super.onActivityResult (requestCode, resultCode, intent);
String uri = intent.getDataString ();
String absolutePath = getRealPathFromURI (uri);
String compressedFilePath = compressImage (absolutePath);
encodedResult = base64File (new File (compressedFilePath)); //String
}
protected String getRealPathFromURI (String contentURI, UIView uiView) {
Uri contentUri = Uri.parse(contentURI);
Cursor cursor = ((ContextWrapper) uiView).getContentResolver ().query(contentUri, null, null, null, null);
if (cursor == null) {
return contentUri.getPath();
} else {
cursor.moveToFirst();
int index = cursor.getColumnIndex(MediaColumns.DATA);
return cursor.getString(index);
}
}
So when I select an image from a folder like : Gallery, Pictures etc... It works just fine. But for the 2 folders : Download and Recent it crashes and gives me :
java.lang.IllegalStateException: Couldn't read row 0, col -1 from CursorWindow. Make sure the Cursor is initialized correctly before accessing data from it.
Or maybe there is a more correct way of doing that which I'm not aware of it ?
Do you have any idea about this ? How can I achieve that ? Thanks.
it crashes and gives me
That is because you are assuming that any Uri can be converted into a File. That has never been supported.
Use a ContentResolver and consume the Uri via openInputStream() (or openOutputStream(), if appropriate).