dependencies {
    compile 'com.library.tangxiaolv:telegramgallery:1.0.5'
}

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    
    <activity android:name="com.tangxiaolv.telegramgallery.GalleryActivity" />

//open album
GalleryConfig config = new GalleryConfig.Build()
                        .limitPickPhoto(3)
                        .singlePhoto(false)
                        .hintOfPick("this is pick hint")
                        .filterMimeTypes(new String[]{"image/jpeg"})
                        .build();
GalleryActivity.openActivity(MainActivity.this, reqCode, config);

//process result
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    //list of photos of seleced
    List<String> photos = (List<String>) data.getSerializableExtra(GalleryActivity.PHOTOS);
    
    //list of videos of seleced
    List<String> vides = (List<String>) data.getSerializableExtra(GalleryActivity.VIDEOS);
}