你好，朋友，
我无法在我的设备中运行 Android 服务。它在模拟器中运行良好。 这是我的示例代码：请查看代码。
MyScheduleReceiver.java：
package com.smpt.wi_ficonnector;
import java.util.Calendar;
import android.app.AlarmManager;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class MyScheduleReceiver extends BroadcastReceiver {
// Restart service every 30 seconds
private static final long REPEAT_TIME = 1000 * 30;
@Override
public void onReceive(Context context, Intent intent) {
AlarmManager service = (AlarmManager) context
.getSystemService(Context.ALARM_SERVICE);
Intent i = new Intent(context, MyStartServiceReceiver.class);
PendingIntent pending = PendingIntent.getBroadcast(context, 0, i,
PendingIntent.FLAG_CANCEL_CURRENT);
Calendar cal = Calendar.getInstance();
// Start 30 seconds after boot completed
cal.add(Calendar.SECOND, 30);
//
// Fetch every 30 seconds
// InexactRepeating allows Android to optimize the energy consumption
service.setInexactRepeating(AlarmManager.RTC_WAKEUP,
cal.getTimeInMillis(), REPEAT_TIME, pending);
// service.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(),
// REPEAT_TIME, pending);
}
}
我的服务.java：
这个类调用wifiservice类。这将启动服务。
package com.smpt.wi_ficonnector;
import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
public class MyService extends Service {
@Override
public void onCreate() {
super.onCreate();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
return super.onStartCommand(intent, flags, startId);
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
MyStartServiceReceiver.java：
这个类调用我的服务类。该服务类将向用户显示通知。
package com.smpt.wi_ficonnector;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class MyStartServiceReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
Intent service = new Intent(context, WifiService.class);
context.startService(service);
}
}
WifiService.java：
此类用于检查 wifi 连接并每 30 秒发送一次通知。
包 com.smpt.wi_ficonnector；
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Binder;
import android.os.IBinder;
public class WifiService extends Service {
private final IBinder mBinder = new MyBinder();
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
boolean networkStatus = haveNetworkConnection();
ConnectivityManager connManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
NetworkInfo netInfo = connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
Notification not;
NotificationManager mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
if(networkStatus == true || netInfo.isConnected() == true){
not = new Notification(R.drawable.on, "Wi-Fi Connector", System.currentTimeMillis());
} else {
not = new Notification(R.drawable.off, "Wi-Fi is not connector", System.currentTimeMillis());
}
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, MainActivity.class), Notification.FLAG_ONGOING_EVENT);
not.flags = Notification.FLAG_ONGOING_EVENT;
if(networkStatus == true || netInfo.isConnected() == true){
not.setLatestEventInfo(this, "Wi-Fi Connector" , "Wi-Fi is connected. You can download data.", contentIntent);
} else {
not.setLatestEventInfo(this, "Wi-Fi Connector" , "Wi-Fi is not connected. You can not download data.", contentIntent);
}
mNotificationManager.notify(1, not);
return Service.START_NOT_STICKY;
}
@Override
public IBinder onBind(Intent intent) {
return mBinder;
}
public class MyBinder extends Binder {
WifiService getService() {
return WifiService.this;
}
}
private boolean haveNetworkConnection() {
boolean haveConnectedWifi = false;
boolean haveConnectedMobile = false;
ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo[] netInfo = cm.getAllNetworkInfo();
for (NetworkInfo ni : netInfo) {
if (ni.getTypeName().equalsIgnoreCase("WIFI"))
if (ni.isConnected())
haveConnectedWifi = true;
if (ni.getTypeName().equalsIgnoreCase("MOBILE"))
if (ni.isConnected())
haveConnectedMobile = true;
}
return haveConnectedWifi || haveConnectedMobile;
}
}
AndroidManifest.xml：
此清单文件告诉 android 应用程序在后台运行服务。它不会使用任何活动。
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.smpt.wi_ficonnector"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="11" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"></uses-permission>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<!--activity
android:name="com.smpt.wi_ficonnector.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity-->
<service
android:name=".WifiService"
android:icon="@drawable/ic_launcher"
android:label="@string/service_name" >
</service>
<service
android:name="MyService"
android:process=":meinprocess"
android:icon="@drawable/ic_launcher"
android:label="@string/service_name" >
</service>
<receiver android:name="MyScheduleReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
<receiver android:name="MyStartServiceReceiver" >
</receiver>
</application>
我的代码在模拟器中运行良好。但它不适用于真实设备。请帮我找出问题所在。