使用Google Maps API缩放时禁用滚动

Question

当我尝试平移谷歌地图时，CoordinatorLayout向下滚动，当然我想要平移地图。 如果我在地图外面，然后尝试平移，那么它可以很好地工作，但这不会是一个非常好的最终用户体验。

OnTouchListener修复了问题的一部分...但只有当我水平平移。当我的手指上下移动时，它停止平移地图。 我该如何解决这个问题？

public class HomeFragment extends Fragment { 

private TextView aboutTxt; 
private SupportMapFragment mSupportMapFragment; 
private GoogleMap mMap; 
public HomeFragment() { 
    // Required empty public constructor 
} 


// TODO: Rename and change types and number of parameters 
public static HomeFragment newInstance() { 
    HomeFragment fragment = new HomeFragment(); 

    return fragment; 
} 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    if (getArguments() != null) { 

    } 
} 


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

    View view = inflater.inflate(R.layout.fragment_home, container, false); 


      view.setOnTouchListener(new View.OnTouchListener() { 
     public boolean onTouch(View v, MotionEvent event) { 



      if (event.getAction()==MotionEvent.ACTION_DOWN) { 

       Log.e(TAG,"Down"); 
       return true; 
      } 

      if (event.getAction()==MotionEvent.ACTION_MOVE){ 

       Log.e(TAG,"Move"); 
       return true; 

      } 
      if (event.getAction()==MotionEvent.ACTION_UP){ 

       Log.e(TAG,"Up"); 
       return true; 
      } 


      return false; 
     } 
      }); 



    mSupportMapFragment = (SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map); 
    if (mSupportMapFragment == null) { 
     FragmentManager fragmentManager = getFragmentManager(); 
     FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction(); 
     mSupportMapFragment = SupportMapFragment.newInstance(); 
     fragmentTransaction.replace(R.id.map, mSupportMapFragment).commit(); 
    } 

    if (mSupportMapFragment != null) { 
     mSupportMapFragment.getMapAsync(new OnMapReadyCallback() { 
      @Override 
      public void onMapReady(GoogleMap googleMap) { 
       if (googleMap != null) { 

        mMap = googleMap; 
        mMap.setMapType(GoogleMap.MAP_TYPE_NORMAL); 

        // Add a marker in Sydney and move the camera 
        LatLng myMap = new LatLng(xx.xxxx, xx.xxxx); 
        mMap.addMarker(new MarkerOptions().position(gradiMap).title("My marker)); 
        mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(myMap, 17)); 

       } 


      } 
     }); 
    } 

XML

<android.support.design.widget.AppBarLayout 
    android:id="@+id/main.appbar" 
    android:layout_width="match_parent" 
    android:layout_height="300dp" 
    android:fitsSystemWindows="true" 
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"> 

    <android.support.design.widget.CollapsingToolbarLayout 
     android:id="@+id/main.collapsing" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:fitsSystemWindows="true" 
     app:contentScrim="?attr/colorPrimary" 
     app:expandedTitleMarginEnd="64dp" 
     app:expandedTitleMarginStart="48dp" 
     app:layout_scrollFlags="scroll|exitUntilCollapsed"> 

     <FrameLayout 
      android:id="@+id/map" 
      android:name="com.google.android.gms.maps.SupportMapFragment" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      app:layout_collapseMode="parallax" /> 


     <android.support.v7.widget.Toolbar 
      android:id="@+id/main.toolbar" 
      android:layout_width="match_parent" 
      android:layout_height="?attr/actionBarSize" 
      app:layout_collapseMode="pin" 
      app:popupTheme="@style/ThemeOverlay.AppCompat.Light" /> 
    </android.support.design.widget.CollapsingToolbarLayout> 

</android.support.design.widget.AppBarLayout> 

<android.support.v4.widget.NestedScrollView 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    app:layout_behavior="@string/appbar_scrolling_view_behavior"> 

    <TextView 
     android:id="@+id/aboutTxt" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:lineSpacingExtra="8dp" 
     android:padding="@dimen/activity_horizontal_margin" 
     android:textColor="@color/colorBlack" 
     android:textSize="17sp" /> 

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

<android.support.design.widget.FloatingActionButton 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_margin="@dimen/activity_horizontal_margin" 
    android:src="@drawable/whitestar" 
    app:layout_anchor="@id/main.appbar" 
    app:layout_anchorGravity="bottom|right|end" /> 

Answer 1

找到了答案here. 像Teimoor Alam Khan说，只是做一个自定义类，并使用它。

public class CustomScrollView extends ScrollView { 

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); 
} 

@Override 
public boolean onInterceptTouchEvent(MotionEvent ev) { 
final int action = ev.getAction(); 
switch (action) { 
    case MotionEvent.ACTION_DOWN: 
     //Log.i("CustomScrollView", "onInterceptTouchEvent: DOWN super false"); 
     super.onTouchEvent(ev); 
     break; 

    case MotionEvent.ACTION_MOVE: 
     return false; // redirect MotionEvents to ourself 

    case MotionEvent.ACTION_CANCEL: 
     // Log.i("CustomScrollView", "onInterceptTouchEvent: CANCEL super false"); 
     super.onTouchEvent(ev); 
     break; 

    case MotionEvent.ACTION_UP: 
     //Log.i("CustomScrollView", "onInterceptTouchEvent: UP super false"); 
     return false; 

    default: 
     //Log.i("CustomScrollView", "onInterceptTouchEvent: " + action); 
     break; 
} 

return false; 
} 

@Override 
public boolean onTouchEvent(MotionEvent ev) { 
super.onTouchEvent(ev); 
//Log.i("CustomScrollView", "onTouchEvent. action: " + ev.getAction()); 
return true; 
    } 
} 

XML：

<com.app.ui.views.CustomScrollView 
android:id="@+id/scrollView" 
xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:fillViewport="true" 
android:orientation="vertical"> 
</com.app.ui.views.CustomScrollView> 

Answer 2

我认为你正在寻找OnInterceptTouchEvent。你可以在你的CoordinatorLayout上设置它，并且能够确定它是否应该使用事件本身，或者将它传递给它的子视图。

你需要延长CoordinatorLayout并覆盖onInterceptTouchEvent(MotionEvent event)并执行以下操作：

@Override 
public boolean onInterceptTouchEvent(MotionEvent event) { 
    switch (event.getAction()) { 
     case MotionEvent.ACTION_DOWN: 
      return false; 
      break; 
     case MotionEvent.ACTION_MOVE: 
      return false; 
      break; 
     default: 
      return true; 
      break; 
    } 
}