我想在ScrollView中有一个MapView,但是当我尝试滚动地图时,ScrollView优先!在地图内滚动时,是否有办法赋予MapView优先级,否则,是否给ScrollView提供优先级?
谢谢!
我想在ScrollView中有一个MapView,但是当我尝试滚动地图时,ScrollView优先!在地图内滚动时,是否有办法赋予MapView优先级,否则,是否给ScrollView提供优先级?
谢谢!
Answers:
我有同样的问题已经有10天了,但是几分钟前我得到了解决方案!这是解决方案。我制作了一个自定义MapView并像这样覆盖onTouchEvent()。
@Override
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;
}
    一种更好/更简单的方法,无需操作单独的触摸事件。如果您使用的是MapView,这将起作用:
  @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        /**
         * Request all parents to relinquish the touch events
         */
        getParent().requestDisallowInterceptTouchEvent(true);
        return super.dispatchTouchEvent(ev);
    }
全班:
public class CustomMapView extends MapView {
    public CustomMapView(Context context) {
        super(context);
    }
    public CustomMapView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    public CustomMapView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }
    public CustomMapView(Context context, GoogleMapOptions options) {
        super(context, options);
    }
    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        /**
         * Request all parents to relinquish the touch events
         */
        getParent().requestDisallowInterceptTouchEvent(true);
        return super.dispatchTouchEvent(ev);
    }
}
如果使用的是MapFragment,则可以将片段放入“自定义视图”中,然后dispatchTouchEvent()进行requestDisallowInterceptTouchEvent调用。
requestDisallowInterceptTouchEvent仅必要MotionEvent.ACTION_DOWN。
                    制作自己的地图并使用。它完全适合我。
public class CustomMapView extends MapView {
public CustomMapView(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);
}} 
在您的布局xml中,
<com.yourpackage.xxxx.utils.CustomMapView
                android:id="@+id/customMap"
                android:layout_width="match_parent"
                android:layout_height="400dp"
                android:layout_marginLeft="5dp"
                android:layout_marginRight="5dp"
                />
    对于那些想要完整的工作代码的人。这里是
自定义地图视图类
public class CustomMapView extends MapView {
private ViewParent mViewParent;
public CustomMapView(Context context) {
    super(context);
}
public CustomMapView(Context context, AttributeSet attrs) {
    super(context, attrs);
}
public CustomMapView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}
public CustomMapView(Context context, GoogleMapOptions options) {
    super(context, options);
}
public void setViewParent(@Nullable final ViewParent viewParent) { //any ViewGroup
    mViewParent = viewParent;
}
@Override
public boolean onInterceptTouchEvent(final MotionEvent event) {
    switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN:
            if (null == mViewParent) {
                getParent().requestDisallowInterceptTouchEvent(true);
            } else {
                mViewParent.requestDisallowInterceptTouchEvent(true);
            }
            break;
        case MotionEvent.ACTION_UP:
            if (null == mViewParent) {
                getParent().requestDisallowInterceptTouchEvent(false);
            } else {
                mViewParent.requestDisallowInterceptTouchEvent(false);
            }
            break;
        default:
            break;
    }
    return super.onInterceptTouchEvent(event);
  }
}
活动布局xml
  <ScrollView
    android:layout_width="match_parent"
    android:layout_height="wrap_content">
    <location.to.your.CustomMapView
        android:id="@+id/mapView"
        android:layout_width="match_parent"
        android:layout_height="250dp"
         />
</ScrollView>
在您的活动或片段中实例化自定义地图类
       CustomMapView mapView = (CustomMapView) findViewById(R.id.mapView);
就这样享受
您可以像这样创建自定义MapView:
public class CustomMapView extends MapView {
    private MapFragment.ControlLock mCallbackControl;
    public CustomMapView(Context context) {
        this(context, null);
    }
    public CustomMapView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }
    public CustomMapView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }
    public CustomMapView(Context context, GoogleMapOptions options) {
        super(context, options);
    }
    public void setCallback(MapFragment.ControlLock callbackControl) {
        this.mCallbackControl = callbackControl;
    }
    @Override
    public boolean dispatchTouchEvent(MotionEvent event) {
        switch (event.getAction()) {
            case MotionEvent.ACTION_UP:
                System.out.println("unlocked");
                mCallbackControl.unlock(); /* Interface */
                break;
            case MotionEvent.ACTION_DOWN:
                System.out.println("locked");
                mCallbackControl.lock(); /* Interface */
                break;
        }
        return super.dispatchTouchEvent(event);
    }
}
    我尝试覆盖MapView.onTouchEvent(...),但对我而言不起作用。这是运行良好的代码(覆盖MapView.onInterceptTouchEvent(...)):
public class MyMapView extends MapView {
    private ViewParent mViewParent;
//add constructors here
    public void setViewParent(@Nullable final ViewParent viewParent) { //any ViewGroup
            mViewParent = viewParent;
    }
    @Override
        public boolean onInterceptTouchEvent(final MotionEvent event) {
            switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    if (null == mViewParent) {
                        getParent().requestDisallowInterceptTouchEvent(true);
                    } else {
                        mViewParent.requestDisallowInterceptTouchEvent(true);
                    }
                    break;
                case MotionEvent.ACTION_UP:
                    if (null == mViewParent) {
                        getParent().requestDisallowInterceptTouchEvent(false);
                    } else {
                        mViewParent.requestDisallowInterceptTouchEvent(false);
                    }
                    break;
                default:
                    break;
            }
            return super.onInterceptTouchEvent(event);
        }
}
    onInterceptTouchEvent()也对我有用,而onTouchEvent()没有。但是我虽然不需要mViewParent,但似乎可以requestDisallowInterceptTouchEvent()在视图层次结构中传播。
                    您可以简单地将MapView放在Layout中,并覆盖onTouch或设置Click-Listener-对我来说是最简单的方法,因为我需要在ScrollView中触摸整个MapView。
如果有人想在科特林上这堂课。
我曾经dispatchTouchEvent像@rotem建议的那样使用
class CustomMapView : MapView {
           constructor(context: Context):
            super(context)
    constructor(context: Context, googleMapOptions: GoogleMapOptions):
            super(context, googleMapOptions)
    constructor(context: Context, attributeSet: AttributeSet):
            super(context, attributeSet)
    constructor(context: Context, attributeSet: AttributeSet, int: Int):
            super(context, attributeSet, int)
    override fun dispatchTouchEvent(event: MotionEvent?): Boolean {
        Log.d("CustomWebView", "touchevent")
        when(event?.action) {
            MotionEvent.ACTION_UP -> {
                Log.d("CustomWebView", "disallow Intercept")
                parent.requestDisallowInterceptTouchEvent(false)
            }
            MotionEvent.ACTION_DOWN -> {
                Log.d("CustomWebView", "allow Intercept")
                parent.requestDisallowInterceptTouchEvent(true)
            }
        }
        return super.dispatchTouchEvent(event)
    }
}