我已经创建了一个togglebutton来检查我希望我的MyServices Class启动它的服务... 我的主要布局文件有3个按钮，点击第二个按钮，我的UserStatus活动启动，此活动的切换有startService（），我认为启动MyService，因为我在其间给出的toast显示。现在我打算做地理定位在后台检测，但我不知道为什么地理位置没有发生，我使用youtube的视频做到了
这是UserStatus活动
package com.salesforce.samples.templateapp;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.Switch;
import android.widget.Toast;
import android.widget.ToggleButton;
import android.location.*;
import android.content.Intent;
public class UserStatus extends Activity {
ToggleButton statusToggle;
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_user_status, menu);
return true;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user_status);
statusToggle=(ToggleButton)findViewById(R.id.toggleButton1);
statusToggle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if (isChecked)
{
statusToggle.setTextOn("On");
Toast.makeText(getApplicationContext(), "Toggle is on", Toast.LENGTH_LONG).show();
startService(new Intent(getBaseContext(), MyServices.class));
}
else
{
statusToggle.setTextOff("Off");
Toast.makeText(getApplicationContext(), "Toggle is off", Toast.LENGTH_LONG).show();
stopService(new Intent(getBaseContext(), MyServices.class));
}
}
});
}
}
这是MyServices类
package com.salesforce.samples.templateapp;
import java.util.HashMap;
import org.json.JSONArray;
import com.salesforce.androidsdk.app.ForceApp;
import com.salesforce.androidsdk.rest.RestClient;
import com.salesforce.androidsdk.rest.RestRequest;
import com.salesforce.androidsdk.rest.RestResponse;
import com.salesforce.androidsdk.rest.RestClient.AsyncRequestCallback;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.app.Service;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.IBinder;
import android.provider.Settings;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;
public class MyServices extends Service {
RestClient client;
double plat;
double plong;
int Two_Min=5*60*1000;
// TextView infoText;
public int onStartCommand(Intent intent, int flags, int startId) {
Toast.makeText(this, "Location Updation has started", Toast.LENGTH_LONG)
.show();
detectLocation();
return START_STICKY;
}
private void detectLocation() {
// TODO Auto-generated method stub
Toast.makeText(this, "Inside detectlocation()", Toast.LENGTH_SHORT)
.show();
LocationManager lm1 = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
LocationListener ll1 = new MyLocationListetner();
Log.v("X",
"Response:After creating lm and ll ");
lm1.requestLocationUpdates(LocationManager.GPS_PROVIDER, 10, Two_Min, ll1);
Log.v("X",
"Response:After lm1.requestLocationUpdates ");
ll1.onLocationChanged(null);
}
class MyLocationListetner implements LocationListener {
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
Log.v("X","Response:inside onLocationChanged ");
Log.v("X","Response:"+location);
if (location == null) {
plat = location.getLatitude();
plong = location.getLongitude();
Log.v("X",
"Response:Location " + Double.toString(plat)+Double.toString(plong));
String objectType = "akshayg__User__c";
String objectId = "a02900000089fK3";
HashMap<String, Object> fields = new HashMap<String, Object>();
fields.put("Name", "Ashish");
// fields.put("akshayg__Donor_Location__Latitude__s",
// Double.toString(plat));
// fields.put("akshayg__Donor_Location__Longitude__s",
// Double.toString(plong));
RestRequest request = null;
try {
request = RestRequest.getRequestForUpdate(
getString(R.string.api_version), objectType,
objectId, fields);
// Toast.makeText(this, "Location Updation has started",
// Toast.LENGTH_LONG).show();
} catch (Exception e) {
// printHeader("Could not build update request");
printException(e);
return;
}
client.sendAsync(request, new AsyncRequestCallback() {
@Override
public void onSuccess(RestRequest request,
RestResponse result) {
// Toast.makeText(this,
// ""+Double.toString(plat)+","+Double.toString(plong),
// Toast.LENGTH_LONG).show();
try {
//Toast.makeText(this, "Location Updated",Toast.LENGTH_LONG).show();
Log.v("X",
"Response: " + result.toString());
/*JSONArray records = result.asJSONObject()
.getJSONArray("records");
for (int i = 0; i < records.length(); i++) {
// listAdapter.add(records.getJSONObject(i).getString("Name"));
// listAdapter.add(records.getJSONObject(i).getString("akshayg__Phone_Number__c"));
// listAdapter.add(records.getJSONObject(i).getString("akshayg__Donor_Location__Latitude__s"));
// listAdapter.add(records.getJSONObject(i).getString("akshayg__Donor_Location__Longitude__s"));
}*/
} catch (Exception e) {
onError(e);
}
}
@Override
public void onError(Exception exception) {
Log.v("X",
"Response: " + exception.toString());
// Toast.makeText(MainActivity.this,
// MainActivity.this.getString(ForceApp.APP.getSalesforceR().stringGenericError(),
// exception.toString()),
// Toast.LENGTH_LONG).show();
}
});
}
}
private void printException(Exception e) {
String err = "Error: " + e.getClass().getSimpleName();
Toast.makeText(getApplicationContext(), err, Toast.LENGTH_LONG)
.show();
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
}
public void onDestroy() {
super.onDestroy();
Toast.makeText(this, "Location Updation has stoped", Toast.LENGTH_LONG)
.show();
}
@Override
public IBinder onBind(Intent arg0) {
// TODO Auto-generated method stub
return null;
}
}
这是我的日志猫错误......
04-02 23:01:33.375: E/AndroidRuntime(4779): FATAL EXCEPTION: main
04-02 23:01:33.375: E/AndroidRuntime(4779): java.lang.RuntimeException: Unable to start service com.salesforce.samples.templateapp.MyServices@413c8878 with Intent { cmp=com.salesforce.samples.templateapp/.MyServices }: android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?
04-02 23:01:33.375: E/AndroidRuntime(4779): at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2403)
04-02 23:01:33.375: E/AndroidRuntime(4779): at android.app.ActivityThread.access$1900(ActivityThread.java:127)
04-02 23:01:33.375: E/AndroidRuntime(4779): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1221)
04-02 23:01:33.375: E/AndroidRuntime(4779): at android.os.Handler.dispatchMessage(Handler.java:99)
04-02 23:01:33.375: E/AndroidRuntime(4779): at android.os.Looper.loop(Looper.java:137)
04-02 23:01:33.375: E/AndroidRuntime(4779): at android.app.ActivityThread.main(ActivityThread.java:4448)
04-02 23:01:33.375: E/AndroidRuntime(4779): at java.lang.reflect.Method.invokeNative(Native Method)
04-02 23:01:33.375: E/AndroidRuntime(4779): at java.lang.reflect.Method.invoke(Method.java:511)
04-02 23:01:33.375: E/AndroidRuntime(4779): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:823)
04-02 23:01:33.375: E/AndroidRuntime(4779): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:590)
04-02 23:01:33.375: E/AndroidRuntime(4779): at dalvik.system.NativeStart.main(Native Method)
04-02 23:01:33.375: E/AndroidRuntime(4779): Caused by: android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?
04-02 23:01:33.375: E/AndroidRuntime(4779): at android.app.ContextImpl.startActivity(ContextImpl.java:877)
04-02 23:01:33.375: E/AndroidRuntime(4779): at android.content.ContextWrapper.startActivity(ContextWrapper.java:276)
04-02 23:01:33.375: E/AndroidRuntime(4779): at com.salesforce.samples.templateapp.MyServices.onStartCommand(MyServices.java:43)
04-02 23:01:33.375: E/AndroidRuntime(4779): at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2386)
控件一直持续到onLocationChanged（）但没有进入if ... else条件。 是bcoz m从服务类发送NULL到onLocationChanged（）..？ 但即使我检查位置！= null如果条件控件仍然没有通过if语句.. 请给出建议更正...... !!
答案 0 :(得分：0)
正如Abhijit所说，帮助你解决LogCat错误会更容易，因为你提供的错误是android总是显示的错误，代码中引发的任何异常。
如果我不得不猜测，我会说可能你的UserStatus活动未在你的清单中宣布。
编辑： 顺便说一下，确保在您测试的设备上启用了GPS。您可能希望以在Android开发人员网站上进行编程的方式对其进行编程验证，如果未启用，则打开位置设置。请查看here。