android - android服务意外停止

Question

嗨，目前我正在使用警报管理器和服务在 android 上实现通知功能，但是当我在 android 设备上启动应用程序时，它会显示当我从“最近的应用程序”列表中删除应用程序时应用程序意外停止的错误消息按住主页按钮。当应用程序未从“最近的应用程序”列表中删除时，它可以正常工作。

谁能建议我在这里做错了什么？感谢您的回复。

我有一个活动让用户确定他们是否要接收通知。然后将该值传递给 Trade.java

贸易.java

//the part where alarm manager is trigger
if(spApp_checkbox.getBoolean("checkbox", false) == true){
            if(spApp_checkbox.getInt("time", 0) <= 10){
                setTime = 60*1000;
            }
            else{
                setTime = spApp_checkbox.getInt("time", 0)*1000;
            }
            Calendar calender = Calendar.getInstance();
              AlarmManager alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
              intent.setClass(this, MyService.class);

              PendingIntent pendingIntent = PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
              alarm.setRepeating(AlarmManager.RTC_WAKEUP, calender.getTimeInMillis(), setTime, pendingIntent);
              this.startService(intent);
        }
        else{
            AlarmManager alarmManagerstop = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
              Intent intentstop = new Intent(this, MyService.class);
              PendingIntent senderstop = PendingIntent.getService(getApplicationContext(), 0, intentstop, 0);
           // Cancel alarms
              try {
                  alarmManagerstop.cancel(senderstop);
              } catch (Exception e) {
                  Log.e("TAG", "AlarmManager update was not canceled. " + e.toString());
              }
              this.stopService(intentstop);
        } 

我的服务.java

public class MyService extends Service {

    private static String SOAP_ACTION1 = "http://pagecode/getTradeControlList_ByParameters";
    private static String NAMESPACE = "http://pagecode";
    private static String METHOD_NAME1 = "getTradeControlList_ByParameters";
    private static String URL = "";
    @Override
    public IBinder onBind(Intent intent) {
           // TODO: Return the communication channel to the service.
           throw new UnsupportedOperationException("Not yet implemented");
    }

    @Override
    public void onCreate() {
           // TODO Auto-generated method stub
           super.onCreate();
    }

    @Override
    public void onDestroy() {
           // TODO Auto-generated method stub
           //Toast.makeText(getApplicationContext(), "Service Destroy", 1).show();
           super.onDestroy();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
           // TODO Auto-generated method stub
           // action to determine whether notification will be trigger
           Vector<SoapObject> obj1_new = showTrade(callby, tradeCrtl, days);
        int[] id_new = new int[obj1_new.size()];
        if(obj1_new != null){
            for (int i = 0; i < obj1_new.size(); i++) {
                    id_new[i] = Integer.valueOf(words[0]);

                    if(!hm.containsKey(id_new[i])){
                        NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
                        NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this);

                        PendingIntent in = PendingIntent.getActivity(getApplicationContext(), 0, intent_tr, 0);
                        System.out.println("list changes");
                        mBuilder.setContentTitle("Application")
                        .setContentText("New trade available")
                        .setProgress(0, 0, false)
                        .setSmallIcon(R.drawable.ic_logo)
                        .setDeleteIntent(in)
                        .setAutoCancel(true);

                    mBuilder.setContentIntent(in);
                    mNotificationManager.notify(0, mBuilder.build());
                    hm = new HashMap();
                    }           
            }

            for (int j = 0; j < obj1_new.size(); j++) {
                hm.put(id_new[j], id_new[j]);

            }
        }
           return super.onStartCommand(intent, flags, startId);
    }
}

清单.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.android.app"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="10"
        android:targetSdkVersion="10" />

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_logo"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.android.app.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>

        <activity android:name="com.android.app.AppSettings"></activity>
        <activity android:name="com.android.app.Trade"
            android:windowSoftInputMode="stateHidden|adjustPan"></activity>

        <service
            android:name="com.android.app.MyService" 
            android:enabled="true"            
            android:exported="true" >
        </service>
    </application>

</manifest>

Answer 1

尝试在 Service 的 onstartCommand() 方法中添加 START_STICKY 作为返回值