java - 我想检测滚动事件的结束

Question

这个问题已经有答案了:

Detect end of ScrollView (13 个回答)

已关闭 5 年前。

我想检测scrollView的滚动事件结束。首先，我实现 OnCrollChange 方法，并尝试监听一些值，如果它们可以帮助我知道滚动的结束。谢谢你帮助我。

 scrollView.setOnScrollChangeListener(new View.OnScrollChangeListener(){
            @Override
            public void onScrollChange(View view, int i, int i1, int i2, int i3){
                Toast.makeText(getApplicationContext(),"in SCroll ------->"+i+" "+i1+" "+i2+" "+i3,Toast.LENGTH_SHORT).show();
                shadowView.setBackgroundResource(R.drawable.shadow);
                if ((i3==0)){
                    Toast.makeText(getApplicationContext()," equality ----------------------> ",Toast.LENGTH_SHORT).show();
                    shadowView.setBackgroundResource(R.drawable.trans);
                }
                else {
                   // Toast.makeText(getApplicationContext()," NO ----------------------> ",Toast.LENGTH_SHORT).show();
                }
            }

        });

Answer 1

这会有所帮助

scrollView.getViewTreeObserver().addOnScrollChangedListener(new ViewTreeObserver.OnScrollChangedListener() {
    @Override
    public void onScrollChanged() {
        if (scrollView != null) {
            if (scrollView.getChildAt(0).getBottom() <= (scrollView.getHeight() + scrollView.getScrollY())) {
                //scroll view is at bottom
            } else {
                //scroll view is not at bottom
            }
        }
    }
});