在onTouchListener内部设置宽度

Question

I know my onTouchListener is working because rangeL.setX(rawX-width/20) dynamically moves my view, but I'm not getting anything when trying to set width using paramsRange.width inside the listener as shown in the code. The first call to paramsRange.width works though. Any ideas?

final LayoutParams paramsRange = rangeView.getLayoutParams();
    paramsRange.height = height;
    paramsRange.width = rangeWidth;
    rangeView.setX(width/10);

    rangeL.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View v, MotionEvent event) {

            int rawX;
            final int actionIndex = event.getAction() >> MotionEvent.ACTION_MOVE;
            final int location[] = { 0, 0 };
            v.getLocationOnScreen(location);
            rawX = (int) event.getX(actionIndex) + location[0];
            rangeL.setX(rawX-width/20);

            rangeView.setX(width/10+(rawX-width/20));

            paramsRange.width = rangeWidth-(rawX-width/20);

            return false;
        }

Answer 1

尝试invalidate() OnTouchListener的rangeL的父视图结尾invalidate() 。

Answer 2

Use following code to find your view height and width, and put it on onResume method. Well, if it don't work, tried put it on onStart method.

rangeView.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
rangeView.getMeasuredWidth();
rangeView.getMeasuredHeight();