Question

我想添加两个listfragments（listfragment1和listfragment2），其列表是从webservice调用动态填充的。 listfragment2假设位于listfragment1的正下方，这样如果在listfragment1中获取了更多内容，那么listfragment2应该移动/向下滑动。

Answer 1

为什么不在linearlayout中包装两个listfragments。你应该为每个listfragment使用两个不同的适配器。这更像是在一个活动中支持两个片段以获得更大的屏幕。一个是页面标题，另一个是页面详细信息。

检查此示例以开始。链接 - supporting tablets.

Answer 2

主要布局：

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" >

    <LinearLayout
        android:id="@+id/lstFragment1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </LinearLayout>


    <LinearLayout
        android:id="@+id/lstFragment2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </LinearLayout>
</LinearLayout>

在活动中添加片段：

         addFragment(R.id.lstFragment1, new lstFragment1());
         addFragment(R.id.lstFragment2, new lstFragment2());

         public void addFragment(int layoutId, Fragment fragment) {
           FragmentManager fm = getSupportFragmentManager();
           FragmentTransaction ft = fm.beginTransaction();
           ft.replace(layoutId, fragment);
           ft.commit();}

使用阻止垂直滚动来制作自定义列表视图..

    public class IjoomerListView extends ListView {

@SuppressWarnings("unused")
private static final int SWIPE_MIN_DISTANCE = 50;
@SuppressWarnings("unused")
private static final int SWIPE_THRESHOLD_VELOCITY = 100;
@SuppressWarnings("unused")
private GestureDetector gDetector;
@SuppressWarnings("unused")
private boolean isFling;

private float mDiffX;
private float mDiffY;
private float mLastX;
private float mLastY;

/**
 * Overrides method
 */
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    switch (ev.getAction()) {
    case MotionEvent.ACTION_DOWN:
        // reset difference values
        mDiffX = 0;
        mDiffY = 0;

        mLastX = ev.getX();
        mLastY = ev.getY();
        break;

    case MotionEvent.ACTION_MOVE:
        final float curX = ev.getX();
        final float curY = ev.getY();
        mDiffX += Math.abs(curX - mLastX);
        mDiffY += Math.abs(curY - mLastY);
        mLastX = curX;
        mLastY = curY;

        // don't intercept event, when user tries to scroll vertically
        if (mDiffX < mDiffY) {
            return false; // do not react to horizontal touch events, these
                            // events will be passed to your list item view
        }
    }

    return super.onInterceptTouchEvent(ev);
}

public IjoomerListView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    init(context);
}

public IjoomerListView(Context context, AttributeSet attrs) {
    super(context, attrs);
    init(context);
}

public IjoomerListView(Context context) {
    super(context);
    init(context);
}

private void init(Context mContext) {
}

}

如何一个接一个地添加两个列表片段？

2 个答案: