Develop Reference

Android: How do I get thumbnail from a Video (Uri)

I want thumbnail from a video at any specific position. I am using ThumbnailUtils in order to get thumbnail from video uri and assigning to bitmap but I am getting null value on bitmap.
Any reasons how this is happening and how do I fix this?
selectedVideoUri = data.getData();
bitmap = ThumbnailUtils.createVideoThumbnail(getRealPathFromURI(videoUri),
MediaStore.Images.Thumbnails.MINI_KIND);
public String getRealPathFromURI(Uri contentUri) {
String res = null;
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(contentUri, proj, null, null, null);
if(cursor.moveToFirst()){;
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
res = cursor.getString(column_index);
}
cursor.close();
return res;
}

You can use Glide to load thumb directly to imageview
Glide.with(activity).load(videoPath).into(imageview);

First Load Video List with its path in Your array list using below method
private void loadData(String currentAppPath) {
hiddenpath = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + currentAppPath);
String[] fileName = hiddenpath.list();
try{
for(String f : fileName){
if(HelpperMethods.isVideo(f)){
videoFiles.add(hiddenpath.getAbsolutePath()+"/"+f);
}
}
new Loader().loadImages(Environment.getExternalStorageState());
}catch (Exception e){
}
}
You need Loader().loadImages method so i declare this method in separate class file. see below code
public class Loader {
String[] imagieFiles;
public void loadImages(String path){
Log.e("path",path);
System.out.println(path);
} }
Then after You can use below Code to Get Video Thumbnail. By default Each Video Store two size Thumbnail.
1) MINI -- MediaStore.Images.Thumbnails.MINI_KIND and
2) MICRO -- MediaStore.Images.Thumbnails.MICRO_KIND
Bitmap thumb = ThumbnailUtils.createVideoThumbnail(filePath,
MediaStore.Images.Thumbnails.MINI_KIND);
BitmapDrawable bitmapDrawable = new BitmapDrawable(thumb);
contentViewHolder.videoView.setImageBitmap(thumb);

This is supported by Android natively using MediaPlayer SeekTo method
If you just want to show the video placeholder to display then you can use below code:
video_view.setVideoPath(videoPath);
video_view.seekTo(3000); // in milliseconds i.e. 3 seconds

ThumbnailUtils returns null when file or video is corrupted.
but I wanted to only use Uri and this is a good solution to do this:
val mmr = MediaMetadataRetriever()
mmr.setDataSource(videoUri)
val thummbnailBitmap = mmr.frameAtTime
imageView.setImageBitmap(thummbnailBitmap)

Missing EXIF info in images selected from gallery using EXTERNAL_CONTENT_URI

I'm trying to gather EXIF info (date of picture taken, geotagging, orientation) from images selected from an EXTERNAL_CONTENT_URI intent, but it seems that if the pictures come from the internet (e.g. Google Photos) the EXIF data is somehow truncated.
For example if I download a picture from a web browser from photos.google.com on my PC, its size is 4.377.104 bytes, and all the EXIF data are there.
While if I download the same exact image using the command:
Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
its size is 4.363.578 bytes (13526 bytes less than the original) and all the EXIF data are lost
Any idea on how to download the full original image?
PS: if I select a picture from the gallery which was taken from the phone and it is still resident on the phone's storage, the EXIF data are present

I finally found out a solution. after getting the source image Uri in the onActivityResult method using
Uri selectedImage = data.getData();
I use the following function to get the necessary data from the picture
public static ImageInfo getImageInfo(Context context, Uri photoUri) {
Cursor cursor = context.getContentResolver().query(photoUri,
new String[] {
MediaStore.Images.ImageColumns.ORIENTATION,
MediaStore.Images.ImageColumns.LATITUDE,
MediaStore.Images.ImageColumns.LONGITUDE,
MediaStore.Images.ImageColumns.DATE_TAKEN } , null, null, null);
if (cursor.getCount() != 1) {
return null;
}
cursor.moveToFirst();
ImageInfo i = new ImageInfo();
i.Orientation = cursor.getInt(0);
i.Lat = cursor.getDouble(1);
i.Lon = cursor.getDouble(2);
i.DateTakenUTC = cursor.getLong(3)/1000;
cursor.close();
return i;
}

Unable to load image from sdcard to canvas

How can I load an image from sdcard to canvas. I tried this code and it is not working.
Uri selectedImage = data.getData();
if (selectedImage == null) {
Log.e(getString(R.string.app_name), "selected image uri is null");
return;
}
String[] filePath = { MediaStore.Images.Media.DATA };
Cursor cursor = getActivity().getContentResolver().query(selectedImage, filePath, null, null, null);
if(cursor==null){
Log.e(getString(R.string.app_name), "image cursor is null");
return;
}
cursor.moveToFirst();
String imagePath = cursor.getString(cursor.getColumnIndex(filePath[0]));
cursor.close();
Bitmap bitmap = BitmapFactory.decodeFile(imagePath);
Bitmap bitmap2 = Bitmap.createBitmap(bitmap.getHeight(),bitmap.getWidth(),bitmap.getConfig());
mCanvas.setBitmap(bitmap2);
Paint p = new Paint();
mCanvas.drawBitmap(bitmap,0,0,p);
What is wrong in this code?

I do not know where this Uri is coming from. However:
Get rid of all the MediaStore stuff
Use ContentResolver and openInputStream() to get an InputStream on the content identified by the Uri
Use BitmapFactory.decodeStream() to decode from that stream
Also:
Make sure that you request READ_EXTERNAL_STORAGE or WRITE_EXTERNAL_STORAGE, including handling runtime permissions
Eventually, move the openInputStream() and decodeStream() work to a background thread
Consider switching to an image-loading library

ThumbnailUtils.createVideoThumbnail return null bitmap for mp4 file

When I get bitmap for mp4 file with: ThumbnailUtils.createVideoThumbnail(mediaFile.getAbsolutePath(), MediaStore.Video.Thumbnails.MINI_KIND); return null

Try this, May be you media file path was wrong. Use below method you will get exact path. Its working for me
Bitmap thumb = ThumbnailUtils.createVideoThumbnail(getPath(outputFileUri),
MediaStore.Images.Thumbnails.MINI_KIND);
photo_Img.setImageBitmap(thumb);
/**
* Get file path
*/
public static String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = context.managedQuery(uri, projection, null, null, null);
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}

I think you must set requires permission in AndroidManifest <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

File file = new File(filepath);
Bitmap bitmap = ThumbnailUtils.createVideoThumbnail(file.getAbsolutePath(), MediaStore.Video.Thumbnails.FULL_SCREEN_KIND);

From android docs:
public static Bitmap createVideoThumbnail (String filePath, int kind)
Create a video thumbnail for a video. May return null if the video is corrupt or the format is not supported.
Hence, I guess you need to re-check the mp4 file.

Getting full-sized image from the camera does not work on Galaxy S

I am having a problem capturing an image from the built-in camera app on the Samsung Galaxy S.
I have a button on my app that when pressed launches the camera:
ContentValues values = new ContentValues();
values.put(Images.Media.MIME_TYPE, "image/jpeg");
mPicUri = getContentResolver().insert(Media.EXTERNAL_CONTENT_URI, values);
intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, mPicUri.getPath());
startActivityForResult(intent, REQ_CODE_TAKE_PIC);
From what I read on the interwebz, I can get the full-sized just-taken picture using the URI I passed to the intent. And so I have this on my onActivityResult:
Uri selectedImage = mPicUri;
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();
And then using the variable filePath, I set the image in an ImageView. I am getting no image, and when I stepped through the code, I found out that BitmapFactory.decodeFile() is returning null.
Bitmap chosenPic = BitmapFactory.decodeFile(filePath);
So I tried a little more debugging. I found out that mPicUri returns a seemingly valid URI, such as: content://media/external/images/media/90. After the picture is taken and the user chooses to save the picture, the cursor resolves to the following filePath: /sdcard/DCIM/Camera/1285601413961.jpg. No bitmap is decoded though, BUT when I looked through the gallery, the picture I just took is there. So I tried to take a look at the URI of that picture, and this is what I got:
URI is: content://media/external/images/media/91
File path is: /sdcard/DCIM/Camera/2010-09-27 23.30.30.jpg
And so, it looks like the value I got from mPicUri is not the final URI that will be used.
Am I missing a step here? All I really want to do is retrieve the file of the just-taken picture.
Thanks in advance,
Zarah.

Did you try to specify File in both cases before taking picture and the same after?
public static File getTempFile() {
//it will return /sdcard/image.jpg
final File path = new File(Environment.getExternalStorageDirectory(), "MyApp");
if (!path.exists()) {
path.mkdir();
}
return new File(path, "image.jpg");
}
I'm using this function to get and set file path.