Answer by Humberto2991 for MediaController positioning over VideoView

this is the first time I answer a question in stackoverflow, I only insert a VideoView inside a FrameLayout with same measures both. MediaController will be at the bottom of the FrameLayout. This worked for me:

main_activity.XML:

           <FrameLayout      
            android:id="@+id/frame_layout_video"
            android:layout_centerHorizontal="true"
            android:layout_width="wrap_content"
            android:layout_height="400dp">

            <VideoView
                android:id="@+id/video_select"
                android:layout_width="wrap_content"
                android:layout_height="400dp"
                android:adjustViewBounds="true"
                android:clickable="true"
                android:scaleType="centerCrop"
                 />

        </FrameLayout>

MainActivity.java:

@Override
public void onClick(View v) {
    int i = v.getId();

    if(i == R.id.select_video){
        selectVideo();
    }

private void selectVideo(){
    //this code is to get videos from gallery:
    Intent galleryIntent = new Intent(Intent.ACTION_GET_CONTENT);
    galleryIntent.addCategory(Intent.CATEGORY_OPENABLE);
    galleryIntent.setAction(Intent.ACTION_GET_CONTENT);
    galleryIntent.setType("video/*");
    startActivityForResult(galleryIntent, GALLERY_REQUEST);

    MediaController mediaController = new MediaController(this);
    mediaController.setAnchorView(mVideo);
    //mVideo is the VideoView where I insert the video
    mVideo.setMediaController(mediaController);
    mVideo.pause();
}


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    switch (requestCode) {
        case 1:
            if (resultCode == RESULT_OK) {
                mVideoUri = data.getData();
                mVideo.setVideoURI(mVideoUri);
                mVideo.start();
            }
    }
}