appwidget显示当前的位置

先看下效果吧!



MyAppWidgetProvider .java

public class MyAppWidgetProvider extends AppWidgetProvider{
  private Timer timer;
  private int[] appWidgetIds;
  private AppWidgetManager appWidgetManager;
  private Context context;
  public void onUpdate(Context context, AppWidgetManager appWidgetManager,int[] appWidgetIds){
            super.onUpdate(context, appWidgetManager, appWidgetIds);
            this.appWidgetIds = appWidgetIds;
            this.appWidgetManager = appWidgetManager;
            this.context = context;
            Intent intent = new Intent(context,MyLocation.class);
            context.startService(intent);
           // views.setTextViewText(R.id.tvMsg, "text");
//appWidgetManager.updateAppWidget(appWidgetIds, views);
    }
}


service:
public class MyLocation extends Service{
public ArrayList<String> locationArr = new ArrayList<String>();
LocationManager lm;
LocationListener ll = new LocationListener() {
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
Location l = lm.getLastKnownLocation(provider);
updtateView(l);
}
@Override
public void onProviderDisabled(String provider) {
updtateView(null);
}
@Override
public void onLocationChanged(Location location) {
updtateView(location);
}
};
@Override
public void onCreate() {
super.onCreate();
        lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
        //设置查询条件
        String bestProvider = lm.getBestProvider(getCriteria(), true);
        //获取位置
        Location l = lm.getLastKnownLocation(bestProvider);
        updtateView(l);
        //设置监听器
        lm.requestLocationUpdates(bestProvider,5000,8,ll);
}
    //编写查询条件的方法
    public Criteria getCriteria(){
    Criteria criteria = new Criteria();
    criteria.setAccuracy(Criteria.ACCURACY_COARSE);//设置查询精度
    criteria.setSpeedRequired(false);//设置是否要求速度
    criteria.setCostAllowed(false);//设置是否产生费用
    criteria.setBearingRequired(false);//设置是否得到方向
    criteria.setAltitudeRequired(false);//设置是否得到海拔高度
    criteria.setPowerRequirement(Criteria.POWER_LOW);//设置运行的电池级别
    return criteria;
    }
    public void updtateView(Location newLocation){
    if (newLocation!=null) {
    locationArr.add(String.valueOf(newLocation.getLatitude()));//添加纬度
    locationArr.add(String.valueOf(newLocation.getLongitude()));//添加经度
}else {
locationArr.add("没有获取您的位置");
}
    }
    public ArrayList<String> getMessage(){
    if (locationArr!=null) {
    return locationArr;
}else {
return null;
}
    }

    @Override
public IBinder onBind(Intent intent) {
return null;
}

@Override
public void onStart(Intent intent, int startId) {
super.onStart(intent, startId);
RemoteViews views = new RemoteViews(this.getPackageName(),
                R.layout.firstappwidget);
String content = "您的位置:"+"\n"+"纬度:"+getMessage().get(0)+
          "\n"+"经度:"+getMessage().get(1);
views.setTextViewText(R.id.tvMsg,content);
ComponentName thisWidget = new ComponentName(this,MyAppWidgetProvider.class);
AppWidgetManager manager = AppWidgetManager.getInstance(this);
manager.updateAppWidget(thisWidget, views);
}

public String getTime(){
Time myTime = new Time();
myTime.setToNow();
return myTime.format("%H:%M:%S");
}
    @Override
    public void onDestroy() {
    super.onDestroy();
    }
}

系统配置文件:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="sunny.app"
      android:versionCode="1"
      android:versionName="1.0">


    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <receiver android:name=".MyAppWidgetProvider">
            <meta-data android:name="android.appwidget.provider"
                    android:resource="@xml/appwidget_provider" />
            <intent-filter>
                <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
            </intent-filter>
        </receiver>
        <service android:name="sunny.app.MyLocation"/>
    </application>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOACTION"/>
    <uses-permission android:name="android.permission.UPDATE_DEVICE_STATS"/>
    <uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION"/>
    <uses-permission android:name="android.permission.INTERNET"/>
</manifest>



<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
    android:minWidth="200dp"
    android:minHeight="100dp"
    android:updatePeriodMillis="1000"
    android:initialLayout="@layout/firstappwidget"/>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
   
    <TextView
        android:id="@+id/tvMsg"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textSize="21dp"
        android:textColor="#FFFFFF"
        android:background="@drawable/background_shape"/>
</LinearLayout>