Based on code suggestions here at stackoverflow, I've tried to extract an image from the MediaStore. However, when I select an actual photo, getContentResolver().query() always returns null. I can't understand why...
Intent i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI);
startActivityForResult(i, SELECT_PHOTO);
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Log.v(TAG,"onActivityResult: requestCode = "+requestCode+", resultCode = "+requestCode);
if (requestCode == SELECT_PHOTO) {
Uri selectedImage = data.getData();
String[] filePathColumn = {android.provider.MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
if (cursor != null) {
Log.v(TAG,"onActivityResult: count = "+cursor.getCount());
if (cursor.getCount() == 1) {
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
Log.v(TAG,"onActivityResult: filePath = "+filePath);
}
cursor.close();
}
}
}
try restart your emulater or your device(or uninstall/install the SD card)?
somebody tell me the Android System will scan the medias when restart or reload SD card...maybe the database hasn't change.
Related
I need to create a view to select a photo and store that photo in my local db.
I have tried:
private final int SELECT_IMAGE = 1;
In a button I put:
Intent i = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, SELECT_IMAGE);
But when I select the picture, the intent close and dont return to my apk.
Some here, my intent is finish. And the onActivityResult never runs. So, i can't handler...
My onActivityResult is this:
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch(requestCode){
case SELECT_IMAGE:
if(resultCode==RESULT_OK){
Uri uri = data.getData();
String[] projection = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(uri, projection, null, null, null);
if(cursor.moveToFirst()){
int columnIndex = cursor.getColumnIndex(projection[0]);
String filePath = cursor.getString(columnIndex);
}
cursor.close();
}
}
}
And to help, on LogCat I have NOTHING. Amazing...
I am using apk on API 7.
I asked this previous question and have edited it to suit my code for a Video Player running from an intent
videoURI = getIntent().getData();
vv.setVideoURI(videoURI);
but this gives me a blank string when I test it with setText()
How do I get this to work so I can get the full path for the launched video? EG. /storage/extSdCard/Videos/Video.mp4
My Code:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Uri uri = data.getData();
String[] filePathColumn = { MediaStore.Video.Media.DATA };
Cursor cursor = getContentResolver().query(uri,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
path = cursor.getString(columnIndex);
cursor.close();
}
Use MediaStore.Video.VideoColumns.DATA instead of MediaStore.Video.Media.DATA
When to use
// to get image randomly
public static Uri getRandomImage(ContentResolver resolver) {
String[] projection = new String[] { BaseColumns._ID
};
Uri uri = new Random().nextInt(1) == 0 ? Media.EXTERNAL_CONTENT_URI
: Media.INTERNAL_CONTENT_URI;
Cursor cursor = Media.query(resolver, uri, projection, null,
MediaColumns._ID);
if (cursor == null || cursor.getCount() <= 0) {
return null;
}
cursor.moveToPosition(new Random().nextInt(cursor.getCount()));
return Uri.withAppendedPath(uri, cursor.getString(0));
}
and when to use ACTION_GET_CONTENT intent ?
as I want to pick an Image from an android device !
PLease help
If you want to pick an image from teh android gallery then try something like this :
Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, 100);
and to get back the result you could do something like this :
protected void onActivityResult(int requestCode, int resultCode,
Intent imageReturnedIntent) {
super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
switch(requestCode) {
case REQ_CODE_PICK_IMAGE:
if(resultCode == RESULT_OK){
Uri selectedImage = imageReturnedIntent.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(
selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
cursor.close();
Bitmap yourSelectedImage = BitmapFactory.decodeFile(filePath);
}
}
}
You could also refer to this :
How to pick an image from gallery (SD Card) for my app?
i would like to get all images/photos/wallpapers from my android device with image saved path.
I have implemented code for collect the images from sdcard as follows:
String[] mProjection = {
MediaStore.Images.Media._ID,
MediaStore.Images.Media.DATA
};
mCursor = cr.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
mProjection,
null,
null,
MediaStore.Images.Media.DEFAULT_SORT_ORDER);
from the above code i can able to retrive the images from sdcard only.But if the images are available in device phone memory then how can i retrive the images/photos/wallpapers?
If i use INTERNAL_CONTENT_URI it is not returning wallapers info other images information
please any body help me....
Try this answer this will work:
public static final int GALLERY_CODE = 322;
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(
intent,
"Select Picture"),
GALLERY_CODE);
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
//Assinging on corresponding import
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == GALLERY_CODE && resultCode == RESULT_OK) {
Uri selectedImageUri = data.getData();
selectedImagePath = getPath(selectedImageUri);
try {
//add logic for coping file
} catch (Exception e) {
}
}
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
I have to launch the image gallery of Android and let the user to select an image. So I want that after the selection, the directory image is returned.
How can I do it?
Thanks.
Michele,
To launch the Intent for image selection from the Gallery, use the following code:
public void imageFromGallery() {
Intent getImageFromGalleryIntent =
new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.INTERNAL_CONTENT_URI);
startActivityForResult(getImageFromGalleryIntent, SELECT_IMAGE);
}
Then, once the user has made their selection you get the result in onActivityResult() like so:
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
switch(requestCode) {
case SELECT_IMAGE:
String imagePath = getPath(data.getData());
break;
}
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
startManagingCursor(cursor);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
getPath() is a function to get the path from the returned URI object. This will return a String with the path you need.
Cheers!