Android ScrollView嵌套ListView 滑动冲突问题的解决方法

向右看齐 2022-03-22 02:30 329阅读 0赞

1、自定义ScrollView类，处理事件分发

/**
     * 解决scrollview嵌套listview造成滑动冲突的问题
     * Created by xl on 2019/1/25.
     */
    public class ListScrollView extends ScrollView {
    
        private ListView listView;
    
        public ListScrollView(Context context, AttributeSet attrs) {
            super(context, attrs);
        }
    
        public ListScrollView(Context context) {
            super(context);
        }
    
        /**
         * 覆写onInterceptTouchEvent方法，点击操作发生在ListView的区域的时候,
         * 返回false让ScrollView的onTouchEvent接收不到MotionEvent，而是把Event传到下一级的控件中
         */
        @Override
        public boolean onInterceptTouchEvent(MotionEvent ev) {
            if (listView != null && checkArea(listView, ev)) {
                return false;
            }
            return super.onInterceptTouchEvent(ev);
        }
    
        /**
         * 测试view是否在点击范围内
         *
         * @param v
         * @return
         */
        private boolean checkArea(View v, MotionEvent event) {
            float x = event.getRawX();
            float y = event.getRawY();
            int[] locate = new int[2];
            v.getLocationOnScreen(locate);
            int l = locate[0];
            int r = l + v.getWidth();
            int t = locate[1];
            int b = t + v.getHeight();
            if (l < x && x < r && t < y && y < b) {
                return true;
            }
            return false;
        }
    
        public ListView getListView() {
            return listView;
        }
    
        public void setListView(ListView listView) {
            this.listView = listView;
        }
    
    }

2、xml布局文件中使用

<add.ds.com.view.ListScrollView
            android:id="@+id/scrollview"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_marginLeft="@dimen/action_bar_margin"
            android:layout_marginRight="@dimen/action_bar_margin"
            android:scrollbars="none">
    
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical">
    
                <ListView
                    android:id="@+id/list1"
                    android:layout_width="match_parent"
                    android:layout_height="400dp"
                    android:layout_marginTop="5dp"
                    android:cacheColorHint="@color/transparent"
                    android:divider="@color/transparent"
                    android:dividerHeight="5dp"
                    android:listSelector="@color/transparent" />
    
            </LinearLayout>
    
        </add.ds.com.view.ListScrollView>

3、activity中使用

private ListScrollView m_scrollView;

m_scrollView = (ListScrollView) this.findViewById(R.id.scrollview);

m_scrollView.setListView(m_listView);

完！！！