allprojects {
 repositories {
  ...
  maven { url 'https://jitpack.io' }
 }
}

dependencies {
        compile 'com.github.nileshpambhar:MultiPhotoPicker:v1.2'
}

Intent mIntent = new Intent(this, PickImageActivity.class);
mIntent.putExtra(PickImageActivity.KEY_LIMIT_MAX_IMAGE, 60);
mIntent.putExtra(PickImageActivity.KEY_LIMIT_MIN_IMAGE, 3);
startActivityForResult(mIntent, PickImageActivity.PICKER_REQUEST_CODE);

protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
    super.onActivityResult(requestCode, resultCode, intent);
    if (resultCode != RESULT_OK) {
        return;
    }
    if (resultCode == -1 && requestCode == PickImageActivity.PICKER_REQUEST_CODE) {
    this.pathList = intent.getExtras().getStringArrayList(PickImageActivity.KEY_DATA_RESULT);
        if (this.pathList != null && !this.pathList.isEmpty()) {
            StringBuilder sb=new StringBuilder("");
            for(int i=0;i<pathList.size();i++) {
                sb.append("Photo"+(i+1)+":"+pathList.get(i));
                sb.append("\n");
            }
            tvResult.setText(sb.toString()); // here this is textview for sample use...
        }
    }
}