地图没有显示，也不知道为什么。我无法弄清楚代码中有什么问题，如果问题出在xml或java中...即我的应用程序中有一个额外的问题，所有这些都运行得很顺利，但当我点击按钮去MapActivity爆炸时
的Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mobimapa"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" />
<permission
android:name="com.mobimapa.permission.MAPS_RECEIVE"
android:protectionLevel="signature"/>
<uses-permission android:name="com.mobimapa.permission.MAPS_RECEIVE"/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="com.mobimapa.permission.MAPS_RECEIVE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-feature
android:glEsVersion="0x00020000"
android:required="true"/>
<application
android:allowBackup="true"
android:icon="@drawable/icon"
android:label="@string/app_name" >
<activity
android:name="com.mobimapa.AndroidPHPConnectionDemo"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.mobimapa.MapActivity"
android:label="@string/app_name" />
<activity
android:name="com.mobimapa.GetProcessosUser"
android:label="@string/app_name" />
<activity
android:name="com.mobimapa.GetProcessosDono"
android:label="@string/app_name" />
<activity
android:name="com.mobimapa.UserPage"
android:label="@string/app_name" />
<activity
android:name="com.mobimapa.Anotacao"
android:label="@string/app_name" />
<activity
android:name="com.mobimapa.GetProcesso"
android:label="@string/app_name" />
<activity
android:name=".ProximityActivity"
android:label="@string/app_name" >
<intent-filter >
<action android:name="com.mobimapa.activity.proximity"/>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".NotificationView"
android:label="@string/app_name" >
<intent-filter >
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<meta-data
android:name="com.google.android.maps.v2.API_KEY"
android:value="AIzaSyDb8wLvH5QSeBCUS-dmd-snzMYhHeA5lUQ"/>
</application>
</manifest>
MapActivity.java
public class MapActivity extends FragmentActivity {
GoogleMap googleMap;
LocationManager locationManager;
PendingIntent pendingIntent;
SharedPreferences sharedPreferences;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.map);
// Getting Google Play availability status
int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getBaseContext());
// Showing status
if(status!=ConnectionResult.SUCCESS){ // Google Play Services are not available
int requestCode = 10;
Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, this, requestCode);
dialog.show();
}else { // Google Play Services are available
// Getting reference to the SupportMapFragment of activity_main.xml
SupportMapFragment fm = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
// Getting GoogleMap object from the fragment
googleMap = fm.getMap();
// Enabling MyLocation Layer of Google Map
googleMap.setMyLocationEnabled(true);
// Getting LocationManager object from System Service LOCATION_SERVICE
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
// Opening the sharedPreferences object
sharedPreferences = getSharedPreferences("location", 0);
// Getting stored latitude if exists else return 0
String lat = sharedPreferences.getString("lat", "0");
// Getting stored longitude if exists else return 0
String lng = sharedPreferences.getString("lng", "0");
// Getting stored zoom level if exists else return 0
String zoom = sharedPreferences.getString("zoom", "0");
// If coordinates are stored earlier
if(!lat.equals("0")){
// Drawing circle on the map
drawCircle(new LatLng(Double.parseDouble(lat), Double.parseDouble(lng)));
// Drawing marker on the map
drawMarker(new LatLng(Double.parseDouble(lat), Double.parseDouble(lng)));
// Moving CameraPosition to previously clicked position
googleMap.moveCamera(CameraUpdateFactory.newLatLng(new LatLng(Double.parseDouble(lat), Double.parseDouble(lng))));
// Setting the zoom level in the map
googleMap.animateCamera(CameraUpdateFactory.zoomTo(Float.parseFloat(zoom)));
}
googleMap.setOnMapClickListener(new OnMapClickListener() {
@Override
public void onMapClick(LatLng point) {
// Removes the existing marker from the Google Map
googleMap.clear();
// Drawing marker on the map
drawMarker(point);
// Drawing circle on the map
drawCircle(point);
// This intent will call the activity ProximityActivity
Intent proximityIntent = new Intent("com.mobimapa.activity.proximity");
// Creating a pending intent which will be invoked by LocationManager when the specified region is
// entered or exited
pendingIntent = PendingIntent.getActivity(getBaseContext(), 0, proximityIntent,Intent.FLAG_ACTIVITY_NEW_TASK);
// Setting proximity alert
// The pending intent will be invoked when the device enters or exits the region 20 meters
// away from the marked point
// The -1 indicates that, the monitor will not be expired
locationManager.addProximityAlert(point.latitude, point.longitude, 20, -1, pendingIntent);
/** Opening the editor object to write data to sharedPreferences */
SharedPreferences.Editor editor = sharedPreferences.edit();
/** Storing the latitude of the current location to the shared preferences */
editor.putString("lat", Double.toString(point.latitude));
/** Storing the longitude of the current location to the shared preferences */
editor.putString("lng", Double.toString(point.longitude));
/** Storing the zoom level to the shared preferences */
editor.putString("zoom", Float.toString(googleMap.getCameraPosition().zoom));
/** Saving the values stored in the shared preferences */
editor.commit();
Toast.makeText(getBaseContext(), "Proximity Alert is added", Toast.LENGTH_SHORT).show();
}
});
googleMap.setOnMapLongClickListener(new OnMapLongClickListener() {
@Override
public void onMapLongClick(LatLng point) {
Intent proximityIntent = new Intent("com.mobimapa.activity.proximity");
pendingIntent = PendingIntent.getActivity(getBaseContext(), 0, proximityIntent,Intent.FLAG_ACTIVITY_NEW_TASK);
// Removing the proximity alert
locationManager.removeProximityAlert(pendingIntent);
// Removing the marker and circle from the Google Map
googleMap.clear();
// Opening the editor object to delete data from sharedPreferences
SharedPreferences.Editor editor = sharedPreferences.edit();
// Clearing the editor
editor.clear();
// Committing the changes
editor.commit();
Toast.makeText(getBaseContext(), "Proximity Alert is removed", Toast.LENGTH_LONG).show();
}
});
}
}
private void drawMarker(LatLng point){
// Creating an instance of MarkerOptions
MarkerOptions markerOptions = new MarkerOptions();
// Setting latitude and longitude for the marker
markerOptions.position(point);
// Adding marker on the Google Map
googleMap.addMarker(markerOptions);
}
private void drawCircle(LatLng point){
// Instantiating CircleOptions to draw a circle around the marker
CircleOptions circleOptions = new CircleOptions();
// Specifying the center of the circle
circleOptions.center(point);
// Radius of the circle
circleOptions.radius(20);
// Border color of the circle
circleOptions.strokeColor(Color.BLACK);
// Fill color of the circle
circleOptions.fillColor(0x30ff0000);
// Border width of the circle
circleOptions.strokeWidth(2);
// Adding the circle to the GoogleMap
googleMap.addCircle(circleOptions);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
map.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MapActivity">
<fragment
class="com.mobimapa.MapActivity"
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
logcat的
08-28 03：08：51.950：E / AndroidRuntime（5592）：java.lang.RuntimeException：无法启动活动ComponentInfo {com.mobimapa / com.mobimapa.MapActivity}：android.view.InflateException：Binary XML文件行＃7：错误膨胀类片段
答案 0 :(得分：1)
您应该SupportMapFragment
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:name="com.google.android.gms.maps.SupportMapFragment"/>
确保您拥有正确的导入。
import android.support.v4.app.FragmentActivity;
import com.google.android.gms.maps.SupportMapFragment;