谷歌地图片段在 N​​estedScrollView 内滚动

Posted 2023-04-15

【中文标题】谷歌地图片段在 N​​estedScrollView 内滚动

【英文标题】：Google Map Fragment scrolling inside NestedScrollView

【发布时间】：2017-06-01 02:14:05

【问题描述】：

我有一个NestedScrollView 作为父级和包含googleMap 作为其子级的片段。当我在地图中向下或向上滚动时，NesetdScrollView 是滚动的，我无法在地图内滚动。到目前为止，我已经尝试通过创建透明图像来解决堆栈溢出问题，但它对我不起作用。

XML：

  <android.support.v4.widget.NestedScrollView
        android:layout_
        android:layout_
        android:layout_below="@+id/car_progress"
        android:id="@+id/nested_scroll"
        android:visibility="gone"

        >
............
............
<RelativeLayout
                android:layout_
                android:layout_
                android:layout_below="@id/first_section"
                android:visibility="gone"
                android:id="@+id/map_wrapper"
                android:orientation="vertical"
                android:layout_marginTop="10dp"
                >

                <TextView
                    android:layout_
                    android:layout_
                    android:text="@string/dealer_location"
                    android:textAllCaps="true"
                    android:textColor="@color/colorPrimary"
                    style="@style/BoldStyle"
                    android:layout_marginLeft="@dimen/single_title_dimen"
                    android:layout_marginRight="@dimen/single_title_dimen"
                    android:id="@+id/dealer_head"

                    />

                <fragment xmlns:android="http://schemas.android.com/apk/res/android"
                    xmlns:tools="http://schemas.android.com/tools"
                    android:layout_
                    android:layout_
                    android:id="@+id/map"
                    android:name="com.google.android.gms.maps.SupportMapFragment"
                    android:layout_below="@+id/dealer_head"
                    />
                <ImageView
                    android:layout_
                    android:layout_
                    android:id="@+id/imagetrans"
                    android:layout_alignTop="@+id/map"
                    android:layout_alignBottom="@+id/map"
                    android:layout_alignEnd="@+id/map"
                    android:layout_alignRight="@+id/map"
                    android:layout_alignLeft="@+id/map"
                    android:layout_alignStart="@+id/map"
                    android:src="@android:color/transparent"/>

            </RelativeLayout>
.....
.....
 </android.support.v4.widget.NestedScrollView>

代码：

transImg.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.
                        nv.requestDisallowInterceptTouchEvent(true);
                        // Disable touch on transparent view
                        return false;

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

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

                    default:
                        return true;
                
            
        );

【参考方案1】：

试试这个...使用这个带有可触摸包装器的自定义地图片段。

MySupportMapFragment mSupportMapFragment;
mSupportMapFragment = (MySupportMapFragment) getChildFragmentManager().findFragmentById(R.id.googleMap);
if(mSupportMapFragment != null)
        mSupportMapFragment.setListener(new MySupportMapFragment.OnTouchListener() 
        @Override
        public void onTouch() 
            scrollView.requestDisallowInterceptTouchEvent(true);
        
    );

MySupportMapFragment

public class MySupportMapFragment extends SupportMapFragment 

    private OnTouchListener mListener;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState) 

        View layout = super.onCreateView(inflater, parent, savedInstanceState);

        TouchableWrapper frameLayout = new TouchableWrapper(getActivity());
        frameLayout.setBackgroundColor(getResources().getColor(android.R.color.transparent));
        ((ViewGroup) layout).addView(frameLayout,
                new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));

        return layout;
    

    public void setListener(OnTouchListener listener) 
        mListener = listener;
    

    public interface OnTouchListener 
        public abstract 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);
        
    

【讨论】：

我无法从活动中访问 getChildFragmentManager()。

java.lang.ClassCastException: com.google.android.gms.maps.SupportMapFragment 无法转换为 com.bidhee.bottlesup.mvp.view.customview.MySupportMapFragment

完美！很好的解决方案。工作正常。

我的问题通过从我的 Activity 内部片段映射标记的 XML 文件中更改这行代码 android:name="com.google.android.gms.maps.SupportMapFragment" 和这一行 android:name="com.development.passengerapp.map.MySupportMapFragment" 解决了，谢谢@AshishJohn

最佳解决方案:)