我开发了一个应用程序作为处理基本 HTTP 请求的服务。当手机收到一个 HTTP Post 请求http ://IP:port/gps/on
时,它应该像下面这样注册到 GPS 监听器:
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER,200,0,locationListener);
但是,由于此代码存在于处理程序中,我收到以下错误:
8.614: E/AndroidRuntime(21211): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
06-18 12:34:58.614: E/AndroidRuntime(21211): at android.os.Handler.<init>(Handler.java:121)
06-18 12:34:58.614: E/AndroidRuntime(21211): at android.location.LocationManager$ListenerTransport$1.<init>(LocationManager.java:183)
06-18 12:34:58.614: E/AndroidRuntime(21211): at android.location.LocationManager$ListenerTransport.<init>(LocationManager.java:183)
06-18 12:34:58.614: E/AndroidRuntime(21211): at android.location.LocationManager._requestLocationUpdates(LocationManager.java:661)
06-18 12:34:58.614: E/AndroidRuntime(21211): at android.location.LocationManager.requestLocationUpdates(LocationManager.java:486)
06-18 12:34:58.614: E/AndroidRuntime(21211): at com.example.devicecommunication.ConnectService$HttpFileHandler.registerGPS(ConnectService.java:4281)
06-18 12:34:58.614: E/AndroidRuntime(21211): at com.example.devicecommunication.ConnectService$HttpFileHandler.handle(ConnectService.java:700)
06-18 12:34:58.614: E/AndroidRuntime(21211): at org.apache.http.protocol.HttpService.doService(HttpService.java:243)
06-18 12:34:58.614: E/AndroidRuntime(21211): at org.apache.http.protocol.HttpService.handleRequest(HttpService.java:187)
06-18 12:34:58.614: E/AndroidRuntime(21211): at com.example.devicecommunication.ConnectService$WorkerThread.run(ConnectService.java:4987)
如果我必须为此使用处理程序/ Looper,您能告诉我吗?以及如何做到这一点的任何例子。提前致谢!
注册 GPS 的代码由处理 HTTP 请求的类调用:
public String registerGPS(){
String gps= "";
if(!gpsSensor){
if(isGpsOn(appContext))
{
Log.d("GPS on","Using GPS Provider here");
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER,200,0,locationListener);
gps = "***********GPS Provider registered here *********************";
}
else
{
Log.d("GPS off","using NETWORK Provider here");
lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,200,0,locationListener);
gps = "***********Network provider registered here *********************";
}
}
gpsSensor = true;
return gps;
}