我想从“类gps_Listener”创建“Intent”并在“class LocationChangedReceiver”中发送参数
我的班级gps_Listener
public class gps_Listener implements LocationListener {
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
send("I found the location");
}
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
public void send(String str) {
Intent intent = new Intent("logGPS");
intent.putExtra("Message", str);
sendBroadcast(intent); //- without context does not work
}
}
和类LocationChangedReceiver
public class LocationChangedReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
}
}
我不知道该怎么做,因为你可以看到没有“上下文”
答案 0 :(得分:3)
您可以在创建时将上下文传递给侦听器。 所以你可以在你的发送方法中使用它:
public class gps_Listener implements LocationListener {
private Context context;
public gps_Listener(Context context) {
this.context = context;
}
...
public void send(String str) {
Intent intent = new Intent("com.your.package.YOUR_ACTION");
intent.putExtra("Message", str);
context.sendBroadcast(intent);
}
}
以这种方式创建:
gps_Listener myListener = new gps_Listener(yourContext);
LocationManager myManager = (LocationManager)getSystemService(LOCATION_SERVICE);
myManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, myListener);
请记住在清单中注册您的广播接收器(您也可以动态取消/注册):
<receiver android:name=".receivers.LocationChangedReceiver" android:enabled="true">
<intent-filter>
<action android:name="com.your.package.YOUR_ACTION"></action>
</intent-filter>
</receiver>