Android:ScrollView强制到底

Question

我希望ScrollView能够从底部开始.任何方法？

Answer 1

你应该在scroll.post中运行代码,如下所示:

scroll.post(new Runnable() {            
    @Override
    public void run() {
           scroll.fullScroll(View.FOCUS_DOWN);              
    }
});

Answer 2

scroll.fullScroll(View.FOCUS_DOWN) 也应该工作.

Answer 3

scroll.fullScroll(View.FOCUS_DOWN)将导致焦点的变化.当有多个可聚焦视图时,这将带来一些奇怪的行为,例如两个EditText.这个问题有另一种方式.

    View lastChild = scrollLayout.getChildAt(scrollLayout.getChildCount() - 1);
    int bottom = lastChild.getBottom() + scrollLayout.getPaddingBottom();
    int sy = scrollLayout.getScrollY();
    int sh = scrollLayout.getHeight();
    int delta = bottom - (sy + sh);

    scrollLayout.smoothScrollBy(0, delta);

这很好用.

Answer 4

有时scrollView.post不起作用

 scrollView.post(new Runnable() {
        @Override
        public void run() {
            scrollView.fullScroll(ScrollView.FOCUS_DOWN);
        }
    });

但是,如果你使用scrollView.postDelayed,它肯定会工作

 scrollView.postDelayed(new Runnable() {
        @Override
        public void run() {
            scrollView.fullScroll(ScrollView.FOCUS_DOWN);
        }
    },1000);

Answer 5

对我来说最有效的是

scroll_view.post(new Runnable() {
     @Override
     public void run() {
         // This method works but animates the scrolling 
         // which looks weird on first load
         // scroll_view.fullScroll(View.FOCUS_DOWN);

         // This method works even better because there are no animations.
         scroll_view.scrollTo(0, scroll_view.getBottom());
     }
});

Answer 6

我增加工作完美.

    private void sendScroll(){
        final Handler handler = new Handler();
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {Thread.sleep(100);} catch (InterruptedException e) {}
                handler.post(new Runnable() {
                    @Override
                    public void run() {
                        scrollView.fullScroll(View.FOCUS_DOWN);
                    }
                });
            }
        }).start();
    }

注意

这个答案是一个真正旧版本的android的解决方法.今天postDelayed没有更多的bug,你应该使用它.

Answer 7

我试过了，成功了。

scrollView.postDelayed(new Runnable() {
    @Override
    public void run() {
        scrollView.smoothScrollTo(0, scrollView.getHeight());
    }
}, 1000);