如何设置滚动型的起始位置？ [英] How to set the starting position of a ScrollView?

问题描述

我一直在试图设置滚动视图的初始位置，但还没有找到一种方法。没有任何人有什么想法？另外我有一个的GoogleMaps片段作为滚动视图的孩子。

I have been trying to set the initial position of a scroll View but have not found a way. Does anyone have any ideas? Also I have a GoogleMaps fragment as a children of the scroll View.

谢谢，

瑞安

推荐答案

是的，这是可能的：

ScrollView.scrollTo(int x, int y);
ScrollView.smoothScrollTo(int x, int y);
ScrollView.smoothScrollBy(int x, int y);

可用于这一点。 x和y的参数是滚动到的水平和垂直轴的坐标。

can be used for that. The x and y parameters are the coordinates to scroll to on the horizontal and vertical axis.

实例code：

    @Override   
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.your_layout);

        ScrollView sv = (ScrollView) findViewById(R.id.scrollView);
        sv.scrollTo(0, 100);
     }

在这个例子中，一旦活动开始，你的滚动型将滚动下跌100像素。

In that example, once the Activity is started, your ScrollView will be scrolled down 100 pixels.

您也可以尝试为延迟滚动处理：

You can also try to delay the scrolling process:

final ScrollView sv = (ScrollView) findViewById(R.id.scrollView);

Handler h = new Handler();

h.postDelayed(new Runnable() {

    @Override
    public void run() {
        sv.scrollTo(0, 100);            
    }
}, 250); // 250 ms delay

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