Question

我有一些视图层次结构

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/TOP_VIEW_LAYOUT"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="0px"
        android:layout_height="0px"
        android:focusable="true"
        android:focusableInTouchMode="true" >
    </LinearLayout>

    <BASearchView
        android:id="@+id/SEARCH_FIELD"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">       
    </BASearchView>

    <BalanceView
        android:id="@+id/CARD_INFO_FIELD"
        android:layout_width="match_parent"
        android:layout_height="44dp"/>
</LinearLayout>

其中public class BASearchView extends LinearLayout和public class BalanceView extends RelativeLayout。我还public class TopView extends LinearLayout使用TOP_VIEW_LAYOUT ..所以，有时间提问。我正在尝试在TopView类

中调度用户事件

@Override
public boolean dispatchTouchEvent( MotionEvent event ) {
    Log.i( TAG, "dispatchTouchEvent() has been called" );
    mGestureDetector.onTouchEvent( event );
    return super.dispatchTouchEvent( event );
}

其中mGestureDetector是SimpleGestureDetector的对象

private SimpleOnGestureListener mGestureListener = new SimpleOnGestureListener() {
    @Override
    public boolean onFling( MotionEvent e1, MotionEvent e2, float vx, float vy ){
        Log.i( TAG, "TopView fling has been detected" );
        return false;
    }
        public boolean onScroll (MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
            Log.i( TAG, "TopView scroll has been detected" );
            return false;
        }
    };

我有一个问题.. onScroll（来自手势检测器）仅在BASearchView内的起点，而不是BalanceView内调用。为什么?? !!我无法理解:(

Answer 1

嗯.. 我找到了一个丑陋的解决方案.. 很简单我为onClickListener添加了空BalanceView，它就变得有效了

    public class BalanceView extends RelativeLayout {

        public BalanceView(Context context, AttributeSet attrs, int defStyle) {
            super(context, attrs, defStyle);
            init();
        }
        private void init() {
            LayoutInflater inflater = (LayoutInflater) getContext().getSystemService( Context.LAYOUT_INFLATER_SERVICE );
            inflater.inflate( R.layout.balance_view, this, true );

            setOnClickListener( new OnClickListener() {
                @Override
                public void onClick(View v) {                  
                }           
            });
            //some code..
        }

       //some class code...   
}

任何人都可以解释一下吗？）

RelativeLayout的父视图不捕获滚动手势

1 个答案: