ScrollView中的Google Maps API v2 SupportMapFragment - 用户无法垂直滚动 Map-Java 学习之路

我正在尝试将Google Map 放在滚动视图中，以便用户可以向下滚动其他内容以查看 Map . 问题是这个滚动视图占用了所有垂直触摸事件，因此 Map 的UI体验变得非常奇怪 .

我知道在谷歌 Map 的V1中，您可以覆盖onTouch或setOnTouchListener以在MotionEvent.ACTION_DOWN上调用requestDisallowInterceptTouchEvent . 我试图用V2实现类似的技巧无济于事 .

到目前为止，我尝试过：

覆盖SupportMapFragment，并在onCreateView中为View设置触摸侦听器
调用SupportMapFragment实例的.getView（），然后调用setOnTouchListener
环绕相对布局或框架布局，使用透明视图或图像视图遮罩片段

这些都没有解决滚动问题 . 我在这里错过了什么吗？如果有人在滚动视图中有一个 Map 的工作示例，请您分享代码示例吗？

8 回答

0

上面列出的大多数选项对我来说都不起作用，但以下证明对我来说是一个很好的解决方案：

Cheese Barons Solution

我也必须实现与我的实现略有不同，因为我在片段中使用 Map ，这使得事情稍微复杂但易于工作 .

回复于 2024-05-06T03:53:50+08:00

在mapview片段上应用透明图像 .

<RelativeLayout
    android:id="@+id/map_layout"
    android:layout_width="match_parent"
    android:layout_height="300dp">

    <fragment
        android:id="@+id/mapview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="-100dp"
        android:layout_marginBottom="-100dp"
        android:name="com.google.android.gms.maps.MapFragment"/>

    <ImageView
        android:id="@+id/transparent_image"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@color/transparent" />

</RelativeLayout>

然后为主ScrollView设置 requestDisallowInterceptTouchEvent(true) . 当用户触摸透明图像并移动时，禁用透明图像上的触摸 MotionEvent.ACTION_DOWN 和 MotionEvent.ACTION_MOVE ，以便 Map 片段可以进行触摸事件 .

ScrollView mainScrollView = (ScrollView) findViewById(R.id.main_scrollview);
ImageView transparentImageView = (ImageView) findViewById(R.id.transparent_image);

transparentImageView.setOnTouchListener(new View.OnTouchListener() {

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        int action = event.getAction();
        switch (action) {
           case MotionEvent.ACTION_DOWN:
                // Disallow ScrollView to intercept touch events.
                mainScrollView.requestDisallowInterceptTouchEvent(true);
                // Disable touch on transparent view
                return false;

           case MotionEvent.ACTION_UP:
                // Allow ScrollView to intercept touch events.
                mainScrollView.requestDisallowInterceptTouchEvent(false);
                return true;

           case MotionEvent.ACTION_MOVE:
                mainScrollView.requestDisallowInterceptTouchEvent(true);
                return false;

           default: 
                return true;
        }   
    }
});

这对我有用 . 希望它可以帮助你..

回复于 2024-05-06T03:53:50+08:00

128

我遇到了类似的问题，并提出了一个基于In-Ho Yi和上面的ДанаилДимитров答案的更通用的工作解决方案 .

public class CustomScrollView extends ScrollView {

    List<View> mInterceptScrollViews = new ArrayList<View>();

    public CustomScrollView(Context context) {
        super(context);
    }

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

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

    public void addInterceptScrollView(View view) {
        mInterceptScrollViews.add(view);
    }

    public void removeInterceptScrollView(View view) {
        mInterceptScrollViews.remove(view);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent event) {

        // check if we have any views that should use their own scrolling
        if (mInterceptScrollViews.size() > 0) {
            int x = (int) event.getX();
            int y = (int) event.getY();
            Rect bounds = new Rect();

            for (View view : mInterceptScrollViews) {
                view.getHitRect(bounds);
                if (bounds.contains(x, y + scrollY)) {
                    //were touching a view that should intercept scrolling
                    return false;
                }
            }
        }

        return super.onInterceptTouchEvent(event);
    }
}

回复于 2024-05-06T03:53:50+08:00

0
谢谢你的建议，

经过多次尝试和错误，拔掉我的头发，咒骂显示器和我糟糕的Android测试手机，我想如果我自定义ScrollView，重写onInterceptTouchEvent，当事件在 Map 视图上时我们返回false什么，然后 Map 上的滚动确实按预期发生 .
```
class MyScrollView(c:Context, a:AttributeSet) extends ScrollView(c,a) {
  val parent = c.asInstanceOf[MyActivity]
  override def onInterceptTouchEvent(ev:MotionEvent):Boolean = {
    var bound:Rect = new Rect()
    parent.mMap.getHitRect(bound)
    if(bound.contains(ev.getX.toInt,ev.getY.toInt))
      false
    else
      super.onInterceptTouchEvent(ev)
  }
}
```
这段代码在Scala中，但你明白了 .

注意我最终使用了原始 Map 视图（如android-sdks \ extras \ google \ google_play_services \ samples \ maps \ src \ com \ example \ mapdemoRawMapViewDemoActivity.java中所示） . 猜猜你可以用片段做同样的事情，我从来没有喜欢片段 .

我认为Google欠我一个道歉 .
回复于 2024-05-06T03:53:50+08:00

我有同样的问题，所以这里是我如何使用解决方案作为Java代码，以防任何人需要它 . 您只需在使用时设置mapView字段 .

import com.google.android.gms.maps.MapView;

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ScrollView;

public class ScrollViewWithMap extends ScrollView
{
    public MapView mapView;

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

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev)
    {
        if (mapView == null)
            return super.onInterceptTouchEvent(ev);

        if (inRegion(ev.getRawX(), ev.getRawY(), mapView))
            return false;

        return super.onInterceptTouchEvent(ev);
    }

    private boolean inRegion(float x, float y, View v)
    {
        int[] mCoordBuffer = new int[]
        { 0, 0 };

        v.getLocationOnScreen(mCoordBuffer);

        return mCoordBuffer[0] + v.getWidth() > x && // right edge
                mCoordBuffer[1] + v.getHeight() > y && // bottom edge
                mCoordBuffer[0] < x && // left edge
                mCoordBuffer[1] < y; // top edge
    }
}

回复于 2024-05-06T03:53:50+08:00

接受的答案在我的案例中不起作用 . 客人的回答既没有（但差不多） . 如果是其他人的情况，请尝试访客回答的这个编辑版本 .

如果有人在计算hitbox时需要使用它，我已经注释掉了操作栏的高度 .

public class InterceptableScrollView extends ScrollView {

    List<View> mInterceptScrollViews = new ArrayList<View>();

    public InterceptableScrollView(Context context) {
        super(context);
    }

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

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

    public void addInterceptScrollView(View view) {
        mInterceptScrollViews.add(view);
    }

    public void removeInterceptScrollView(View view) {
        mInterceptScrollViews.remove(view);
    }

    private int getRelativeTop(View myView) {
        if (myView.getParent() == this)
            return myView.getTop();
        else
            return myView.getTop() + getRelativeTop((View) myView.getParent());
    }
    private int getRelativeLeft(View myView) {
        if (myView.getParent() == this)
            return myView.getLeft();
        else
            return myView.getLeft() + getRelativeLeft((View) myView.getParent());
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent event) {

        // check if we have any views that should use their own scrolling
        if (mInterceptScrollViews.size() > 0) {
            int x = (int) event.getX();
            int y = (int) event.getY();


            /*
            int actionBarHeight = 0;

            TypedValue tv = new TypedValue();
            if (getContext().getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true))
            {
                actionBarHeight = TypedValue.complexToDimensionPixelSize(tv.data,getResources().getDisplayMetrics());
            }
            */

            int viewLocationY = 0;
            int viewLocationX = 0;
            int relativeTop = 0;
            int relativeLeft = 0;

            for (View view : mInterceptScrollViews) {

                relativeTop = getRelativeTop((View) view.getParent());
                relativeLeft = getRelativeLeft((View) view.getParent());
                viewLocationY = relativeTop - getScrollY();
                viewLocationX = relativeLeft - getScrollX();

                if (view.getHeight() + viewLocationY > y && y > viewLocationY && view.getWidth() + viewLocationX > x && x > viewLocationX)
                {
                    return false;
                }
            }
        }

        return super.onInterceptTouchEvent(event);
    }
}

回复于 2024-05-06T03:53:50+08:00

如果您不再需要透明图像，请改进代码：

// gmap hack for touch and scrollview
        final ScrollView mainScrollView = (ScrollView) rootView.findViewById(R.id.scrollView);
        (rootView.findViewById(R.id.fixTouchMap)).setOnTouchListener(new View.OnTouchListener() {

            @Override
            public boolean onTouch(View v, MotionEvent event) {
                int action = event.getAction();
                switch (action) {
                    case MotionEvent.ACTION_DOWN:
                        // Disallow ScrollView to intercept touch events.
                        mainScrollView.requestDisallowInterceptTouchEvent(true);
                        // Disable touch on transparent view
                        return false;

                    case MotionEvent.ACTION_UP:
                        // Allow ScrollView to intercept touch events.
                        mainScrollView.requestDisallowInterceptTouchEvent(false);
                        return true;

                    case MotionEvent.ACTION_MOVE:
                        mainScrollView.requestDisallowInterceptTouchEvent(true);
                        return false;

                    default:
                        return true;
                }
            }
        });

回复于 2024-05-06T03:53:50+08:00

在XML中使用自定义Google Map 片段 .

这是完整的代码，对我有用 . 如果您有任何疑问，请告诉我 .

In your XML file, add the following as map fragment

<fragment
        android:id="@+id/map_with_scroll_fix"
        android:name="com.myapplication.maputil.GoogleMapWithScrollFix"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

Here is the custom class for map

package com.myapplication.maputil;

import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;

import com.google.android.gms.maps.SupportMapFragment;
    public class GoogleMapWithScrollFix extends SupportMapFragment {
        private OnTouchListener mListener;

        @Override
        public View onCreateView(LayoutInflater layoutInflater, ViewGroup viewGroup, Bundle savedInstance) {
            View layout = super.onCreateView(layoutInflater, viewGroup, savedInstance);

            TouchableWrapper touchableWrapper = new TouchableWrapper(getActivity());

            touchableWrapper.setBackgroundColor(getResources().getColor(android.R.color.transparent));

            ((ViewGroup) layout).addView(touchableWrapper,
                    new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));

            return layout;
        }

        public void setListener(OnTouchListener listener) {
            mListener = listener;
        }

        public interface OnTouchListener {
            void onTouch();
        }

        public class TouchableWrapper extends FrameLayout {

            public TouchableWrapper(Context context) {
                super(context);
            }

            @Override
            public boolean dispatchTouchEvent(MotionEvent event) {
                switch (event.getAction()) {
                    case MotionEvent.ACTION_DOWN:
                        mListener.onTouch();
                        break;
                    case MotionEvent.ACTION_UP:
                        mListener.onTouch();
                        break;
                }
                return super.dispatchTouchEvent(event);
            }
        }
    }

Add the following in your activity class, to initialize mapview. That's it. Tada :)

((GoogleMapWithScrollFix) getSupportFragmentManager()
                .findFragmentById(R.id.map_with_scroll_fix)).getMapAsync(new OnMapReadyCallback() {
            @Override
            public void onMapReady(GoogleMap googleMap) {
                ScrollView mScrollView = findViewById(R.id.scrollview); //parent scrollview in xml, give your scrollview id value
                ((GoogleMapWithScrollFix) getSupportFragmentManager()
                        .findFragmentById(R.id.map_with_scroll_fix)).setListener(new GoogleMapWithScrollFix.OnTouchListener() {
                    @Override
                    public void onTouch() {
                        //Here is the magic happens.
                        //we disable scrolling of outside scroll view here
                        mScrollView.requestDisallowInterceptTouchEvent(true);
                    }
                });
            }
        });

回复于 2024-05-06T03:53:50+08:00

ScrollView中的Google Maps API v2 SupportMapFragment - 用户无法垂直滚动 Map

8 回答

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