我正在使用viewpager在2个操作栏选项卡之间滑动(使用eclipse向导进行此类导航)。我正在使用android maps v2 api。
我希望在我的一个标签页面中有mapview,button和textview(我猜不可能有mapfragment)。
我从xml中为我的片段扩充布局,如下所示:
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.first_tab_fragment, container, false);
}
}
我的first_tab_fragment.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<com.google.android.gms.maps.MapView
android:id="@+id/mapview"
android:layout_width="100dip"
android:layout_height="100dip"
android:layout_alignParentTop="true"
android:layout_alignRight="@+id/textView1"
android:layout_marginRight="15dp" >
</com.google.android.gms.maps.MapView>
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/textView1"
android:layout_centerHorizontal="true"
android:text="Button" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignRight="@+id/button1"
android:layout_marginBottom="133dp"
android:text="TextView" />
不显示MapView,只显示textview和按钮。我也没有错。我是否必须编写一些代码来初始化mapview?
答案 0 :(得分:28)
我通过将此代码添加到onCreateView:
来解决了这个问题 // Gets the MapView from the XML layout and creates it
mapView = (MapView) v.findViewById(R.id.mapview);
mapView.onCreate(savedInstanceState);
mapView.onResume(); //without this, map showed but was empty
// Gets to GoogleMap from the MapView and does initialization stuff
map = mapView.getMap();
map.getUiSettings().setMyLocationButtonEnabled(false);
map.setMyLocationEnabled(true);
// Needs to call MapsInitializer before doing any CameraUpdateFactory calls
try {
MapsInitializer.initialize(this.getActivity());
} catch (GooglePlayServicesNotAvailableException e) {
e.printStackTrace();
}
// Updates the location and zoom of the MapView
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(44.14, 14.2), 10);
map.animateCamera(cameraUpdate);