我想在服务中重复运行函数 "getData()"

Question

public class MyService 扩展服务 {

int a=0;
@Override
public IBinder onBind(Intent arg0) {
    return null;
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    StrictMode.enableDefaults();
    Toast.makeText(this, "Service Started", Toast.LENGTH_LONG).show();
    getData();
    return START_REDELIVER_INTENT;
}
@Override
public void onDestroy() {
    super.onDestroy();
    Toast.makeText(this, "Service Destroyed", Toast.LENGTH_LONG).show();
}
public void getData(){
    String result="";
    InputStream isr=null;
    try{
        HttpClient httpclient=new DefaultHttpClient();
        HttpPost httpPost=new HttpPost("http://192.168.96.1/php1/noti.php");
        HttpResponse response=httpclient.execute(httpPost);
        HttpEntity entity=response.getEntity();
        isr=entity.getContent();
    }catch (Exception e){
        Log.e("Log_tag", "Error in Http Connection" + e.toString());
        Toast.makeText(this, "Could not connect to database", Toast.LENGTH_LONG).show();
    }
    NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    String MyText = "Reminder";
    Notification mNotification = new Notification(R.drawable.icon, MyText, System.currentTimeMillis());
    try{
        BufferedReader reader=new BufferedReader(new InputStreamReader(isr,"US-ASCII"),8);
        StringBuilder sb=new StringBuilder();
        String line=null;
        while((line=reader.readLine())!=null){
            sb.append(line+"\n");
        }
        isr.close();
        result=sb.toString();
    }catch (Exception e){
        Log.e("Log_tag","Error converting Result"+e.toString());
    }
    try {
        String s="";
        JSONArray jArray=new JSONArray(result);

        for(int i=0;i<jArray.length();i++){
            JSONObject json=jArray.getJSONObject(i);
            s=s +
            "State: "+json.getString("state")+"\n";
            String MyNotificationTitle = "E-Door Security";
            String MyNotificationText = "Door Opened!!!";

            Intent MyIntent = new Intent(Intent.ACTION_VIEW);
            PendingIntent StartIntent = PendingIntent.getActivity(getApplicationContext(), 0, MyIntent, PendingIntent.FLAG_CANCEL_CURRENT);

点击。 FLAG_CANCEL_CURRENT标志取消pendingintent

            mNotification.setLatestEventInfo(getApplicationContext(), MyNotificationTitle, MyNotificationText, StartIntent);

            int NOTIFICATION_ID = 1;
            notificationManager.notify(NOTIFICATION_ID, mNotification);
            a=0;
        }
    }catch (Exception e){
        if(a!=1) {
            String MyNotificationTitle = "E-Door Security";
            String MyNotificationText = "door Closed!!!";

            Intent MyIntent = new Intent(Intent.ACTION_VIEW);
            PendingIntent StartIntent = PendingIntent.getActivity(getApplicationContext(), 0, MyIntent, PendingIntent.FLAG_CANCEL_CURRENT);

点击。 FLAG_CANCEL_CURRENT标志取消pendingintent

            mNotification.setLatestEventInfo(getApplicationContext(), MyNotificationTitle, MyNotificationText, StartIntent);

            int NOTIFICATION_ID = 1;
            notificationManager.notify(NOTIFICATION_ID, mNotification);
            a=1;
        }
    }
}

}

我希望在服务中重复调用 "getDate()" 函数
问题是它在第一次安装时会调用一次，但不会重复调用。

Answer 1

使用 AlarmManager 调用您的服务：

    Intent serviceIntent = new Intent(this, ServiceClass.class);
    AlarmManager manager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    PendingIntent pendingIntent = PendingIntent.getService(getApplicationContext(), 0,
            serviceIntent, PendingIntent.FLAG_CANCEL_CURRENT);
    manager.setRepeating(AlarmManager.RTC_WAKEUP, 0,2000, pendingIntent);

这里 2000 是时间段，这意味着每 2 秒调用一次 onStartCommand()。

我想在服务中重复运行函数 "getData()"

I Want to run the function "getData()" repeatedly inside Service

android

android-service

我想在服务中重复 运行 函数 "getData()"

I Want to run the function "getData()" repeatedly inside Service

android

android-service

我想在服务中重复运行函数 "getData()"