Activity in Android Dialog form

In

Android, I present an Activity, as Dialog and change the size of the window. The code is as follows:
Window dialogWindow=getWindow (); 

    WindowManager.LayoutParams lp=dialogWindow.getAttributes();
    DisplayMetrics d=getApplicationContext().getResources().getDisplayMetrics();
    lp.width=(int)(d.widthPixels*0.68);
    lp.height=(int)(d.heightPixels*0.84);
    dialogWindow.setAttributes(lp);

then add a VideoView, to Dialog and set MediaController for VideoView. However, in the course of running, it is found that the video progress control bar is in the lower right corner of the video, but not in the Dialog window. How to solve it?

Android
Jun.24,2021

in the xml that defines VideoView , add MediaController , otherwise MediaController will be loaded and displayed as Window . The Android source code is as follows: 

    public MediaController(Context context, AttributeSet attrs) {
        super(context, attrs);
        mRoot = this;
        mContext = context;
        mUseFastForward = true;
        mFromXml = true;
        mAccessibilityManager = AccessibilityManager.getInstance(context);
    }

    public MediaController(Context context, boolean useFastForward) {
        super(context);
        mContext = context;
        mUseFastForward = useFastForward;
        initFloatingWindowLayout();
        initFloatingWindow();
        mAccessibilityManager = AccessibilityManager.getInstance(context);
    }

    public MediaController(Context context) {
        this(context, true);
    }

    private void initFloatingWindow() {
        mWindowManager = (WindowManager)mContext.getSystemService(Context.WINDOW_SERVICE);
        mWindow = new PhoneWindow(mContext);
        mWindow.setWindowManager(mWindowManager, null, null);
        mWindow.requestFeature(Window.FEATURE_NO_TITLE);
        mDecor = mWindow.getDecorView();
        mDecor.setOnTouchListener(mTouchListener);
        mWindow.setContentView(this);
        mWindow.setBackgroundDrawableResource(android.R.color.transparent);

        // While the media controller is up, the volume control keys should
        // affect the media stream type
        mWindow.setVolumeControlStream(AudioManager.STREAM_MUSIC);

        setFocusable(true);
        setFocusableInTouchMode(true);
        setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
        requestFocus();
    }

    // Allocate and initialize the static parts of mDecorLayoutParams. Must
    // also call updateFloatingWindowLayout() to fill in the dynamic parts
    // (y and width) before mDecorLayoutParams can be used.
    private void initFloatingWindowLayout() {
        mDecorLayoutParams = new WindowManager.LayoutParams();
        WindowManager.LayoutParams p = mDecorLayoutParams;
        p.gravity = Gravity.TOP | Gravity.LEFT;
        p.height = LayoutParams.WRAP_CONTENT;
        p.x = 0;
        p.format = PixelFormat.TRANSLUCENT;
        p.type = WindowManager.LayoutParams.TYPE_APPLICATION_PANEL;
        p.flags |= WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM
                | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
                | WindowManager.LayoutParams.FLAG_SPLIT_TOUCH;
        p.token = null;
        p.windowAnimations = 0; // android.R.style.DropDownAnimationDown;
    }

    // Update the dynamic parts of mDecorLayoutParams
    // Must be called with mAnchor != NULL.
    private void updateFloatingWindowLayout() {
        int [] anchorPos = new int[2];
        mAnchor.getLocationOnScreen(anchorPos);

        // we need to know the size of the controller so we can properly position it
        // within its space
        mDecor.measure(MeasureSpec.makeMeasureSpec(mAnchor.getWidth(), MeasureSpec.AT_MOST),
                MeasureSpec.makeMeasureSpec(mAnchor.getHeight(), MeasureSpec.AT_MOST));

        WindowManager.LayoutParams p = mDecorLayoutParams;
        p.width = mAnchor.getWidth();
        p.x = anchorPos[0] + (mAnchor.getWidth() - p.width) / 2;
        p.y = anchorPos[1] + mAnchor.getHeight() - mDecor.getMeasuredHeight();
    }

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