android popupwindow彈出後背景變暗
阿新 • • 發佈:2019-01-04
private void dimBackground(final float from, final float to) { final Window window = getWindow(); ValueAnimator valueAnimator = ValueAnimator.ofFloat(from, to); valueAnimator.setDuration(500); valueAnimator.addUpdateListener(new AnimatorUpdateListener() { @Override public void onAnimationUpdate(ValueAnimator animation) { WindowManager.LayoutParams params = window.getAttributes(); params.alpha = (Float) animation.getAnimatedValue(); getWindow().addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND); window.setAttributes(params); } }); valueAnimator.start(); }