Android里scroll嵌套google map

Android开发中在页面嵌套了google 地图，使用的时候发现地图不能拖动，跟scrollview事件有冲突。百度不给力，还是google好用点。

In this case, i work with the SupportMapFragment in Android Map V2 so the workaround is to make a custom SupportMapFragment class so we can override its touch event. This solution is based on gaucho’sanswer on related post in stackoverflow with some small changes made by me.

package net.londatiga.android.ui.fragment; import android.content.Context;import android.os.Bundle;import android.widget.FrameLayout; import android.view.LayoutInflater;import android.view.MotionEvent;import android.view.View;import android.view.ViewGroup; import com.google.android.gms.maps.SupportMapFragment; public class WorkaroundMapFragment extends SupportMapFragment {    private OnTouchListener mListener;     @Override    public View onCreateView(LayoutInflater layoutInflater, ViewGroup viewGroup, Bundle savedInstance) {        View layout = super.onCreateView(layoutInflater, viewGroup, savedInstance);         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);      }    }}

 

In this class, we intercept the touch event by using TouchableWrapper class that extends the FrameLayout. There is also a custom listener OnTouchListener to dispatch the touch event to the main activity MyMapActivity that handles the map. When touch event occured, dispatchTouchEvent will be called and the listener mListener will handle it.

 

<?xml version="1.0" encoding="UTF-8"?><ScrollView    xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/sv_container"    android:layout_width="match_parent"    android:layout_height="match_parent">    <!-- other child views //-->     <fragment        android:tag="fragment_map"       android:id="@+id/fragment_map"       android:layout_width="match_parent"       android:layout_height="175dp"       android:layout_marginTop="@dimen/activity_horizontal_margin"       class="net.londatiga.android.ui.fragment.WorkaroundMapFragment"/></ScrollView>

 

package net.londatiga.android.ui; import net.londatiga.android.ui.fragment.WorkaroundMapFragment;import com.google.android.gms.maps.GoogleMap;import android.widget.ScrollView; public class MyMapActivty extends MapActivity {    private ScrollView mScrollView;    private GoogleMap mMap;     @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);         setContentView(R.layout.fragment_my_map);         mMap = ((WorkaroundMapFragment) getSupportFragmentManager().findFragmentById(R.id.fragment_map)).getMap();        mScrollView = (ScrollView) findViewById(R.id.sv_container);        ((WorkaroundMapFragment) getSupportFragmentManager().findFragmentById(R.id.fragment_map)).setListener(new WorkaroundMapFragment.OnTouchListener() {          @Override          public void onTouch() {              mScrollView.requestDisallowInterceptTouchEvent(true);          }     });   }}

Inside activity class, get the GoogleMap mMap and ScrollView container mScollView then set theOnTouchListener to the WorkaroundMapFragment. When touch event occured,  onTouch handler will be called and we block the event being dispatched the ScrollView layout. This will make the map scrollable without the ScrollView being scrollable too.