ScrollView 内的 Yandex Mapview 不垂直滚动

Question

mapview 只会横向滚动，就好像您尝试垂直滚动时，ScrollView 正在采取行动。我试过 requestDisallowInterceptTouchEvent(true);但它没有帮助。

PS。 Yandex MapView 扩展了 RelativeLayout

Answer 1

尝试使用 MapView onTouchEvent，如下所示

public boolean onTouchEvent(MotionEvent ev) {
int action = ev.getAction();
switch (action) {
case MotionEvent.ACTION_DOWN:
    // Disallow ScrollView to intercept touch events.
    this.getParent().requestDisallowInterceptTouchEvent(true);
    break;

case MotionEvent.ACTION_UP:
    // Allow ScrollView to intercept touch events.
    this.getParent().requestDisallowInterceptTouchEvent(false);
    break;
}

// Handle MapView's touch events.
super.onTouchEvent(ev);
return true;

}

requestDisallowInterceptTouchEvent 如果设置为 true，则可以滚动嵌套视图，如果为 false，则启用父 ScrollView 滚动。

对于 ListView，我们不需要这个事件监听器，只需 listview.setNestedScrollingEnabled(true);

mapview.setOnTouchListener(new View.OnTouchListener() {
        @Override
        public boolean onTouch(View view, MotionEvent motionEvent) {
            switch (motionEvent.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    // Disallow ScrollView to intercept touch events.
                    this.getParent().requestDisallowInterceptTouchEvent(true);
                    break;

                case MotionEvent.ACTION_UP:
                    // Allow ScrollView to intercept touch events.
                    this.getParent().requestDisallowInterceptTouchEvent(false);
                    break;
            }

            super.onTouchEvent(ev);
            return true;
        }
    });

Answer 2

您必须创建自定义 MapView。按照下面提供的代码 sn-p

public class AppMapView extends MapView {

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

    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        switch (ev.getAction()) {
            case MotionEvent.ACTION_UP:
               System.out.println("unlocked");
               this.getParent().requestDisallowInterceptTouchEvent(false);
               break;

            case MotionEvent.ACTION_DOWN:
               System.out.println("locked");
               this.getParent().requestDisallowInterceptTouchEvent(true);
               break;
       }
       return super.dispatchTouchEvent(ev);
   }
}