android滚动并查看whatsup等详细信息
放置一些像向下箭头的图标,这样用户就可以知道在android中有一些细节如下所示 滚动页面结束后,滚动箭头将消失android滚动并查看whatsup等详细信息,android,android-scrollview,whatsapp,Android,Android Scrollview,Whatsapp,放置一些像向下箭头的图标,这样用户就可以知道在android中有一些细节如下所示 滚动页面结束后,滚动箭头将消失 scrollView1.getViewTreeObserver().addOnScrollChangedListener(new OnScrollChangedListener() { public void onScrollChanged() { int scrollViewHeight = scrollView1.getChildA
scrollView1.getViewTreeObserver().addOnScrollChangedListener(new OnScrollChangedListener() {
public void onScrollChanged() {
int scrollViewHeight = scrollView1.getChildAt(0).getHeight();
Log.e("scrollVIEW_height", "SCROLL" + scrollViewHeight);
double size = 0;
DisplayMetrics dm = mContext.getResources().getDisplayMetrics();
float screenWidth = dm.widthPixels / dm.xdpi;
float screenHeight = dm.heightPixels / dm.ydpi;
float i = dm.heightPixels;
Log.e("height in i", "" + i);
double heightininch = Math.sqrt(Math.pow(screenHeight, 2));
Log.e("height in inch", "" + heightininch);
size = Math.sqrt(Math.pow(screenWidth, 2) + Math.pow(screenHeight, 2));
Log.e("screen", "" + size);
if (size >= 6) {
if (scrollViewHeight >= (int)i) {
DownIndicator.setVisibility(View.VISIBLE);
// TopIndicator.setVisibility(View.VISIBLE);
}
}
}
});