表现：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.yu.lbs"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<uses-library android:name="com.google.android.maps" />
<activity
android:name="com.yu.lbs.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
main.xml中：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<com.google.android.maps.MapView
android:id="@+id/mapView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:apiKey=".........."
android:clickable="true"
android:enabled="true" />
</LinearLayout>
MainActivity.java：
import android.os.Bundle;
import android.view.Menu;
import com.google.android.maps.MapActivity;
public class MainActivity extends MapActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
活动可以开始.但是在MapView中什么都没有.可以显示小网格的地图,我认为它带有MapView,但没有加载地图.可能有什么不对？我使用的是Google API v3.但是这段代码来自使用API v1的教科书.
解决方法
我得到解决的方式,我不得不这样做：
final MapView mapView = (MapView)fragmentView.findViewById(R.id.map_fieldLocation);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(GoogleMap googleMap) {
LatLng coordinates = new LatLng(match.match.LocationLatitude,match.match.LocationLongitude);
googleMap.addMarker(new MarkerOptions().position(coordinates).title(match.match.LocationAddress));
googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(coordinates,15));
mapView.onResume();
}
});
我缺少的重要部分是你必须在调用getMapAsync()之前调用onCreate()方法,一旦调用了回调,你需要在MapView对象上调用onResume().
这完全解决了我.
这是你自己班里的样子：
public class MainActivity extends MapActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
if (getView() != null) {
final MapView mapView = (MapView)getView().findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(GoogleMap googleMap) {
LatLng coordinates = new LatLng(match.match.LocationLatitude,match.match.LocationLongitude);
googleMap.addMarker(new MarkerOptions().position(coordinates).title(match.match.LocationAddress));
googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(coordinates,15));
mapView.onResume();
}
}
}
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
希望这可以帮助！
