android片段/手势检测，上下

Question

我有一个可用的片段类，其中需要调用片段x并向下调用片段y，检查多个解决方案dint工作请提供代码。

public class Image_1 extends Fragment   {
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle args) {
        final View view = inflater.inflate(R.layout.image1_activity, container, false);
/////fling up 
///--->fragment x 
/////fling down
///--->fragment y 
        return view;
    }
}