Question

我想停止我的服务，完成它的任务。但服务不会停止我覆盖onDestroy（）但它不起作用。当服务停止时，它将开始一项新活动。
以下是我的代码

DataService.java

  package com.remote.synchronizer.haris;

import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;

import org.apache.http.NameValuePair;

import android.app.Service;
import android.content.Intent;
import android.database.sqlite.SQLiteDatabase;
import android.os.Handler;
import android.os.IBinder;
import android.util.Log;
import android.widget.Toast;

public class DataService extends Service {

    boolean wifi,edge;
    private Timer timer= new Timer();
    SQLiteDatabase db;
    String un,shop,city,date,order;
    private SQLiteAdapter mySQLiteAdapter;

    @Override
    public void onCreate(){

        super.onCreate();
        mySQLiteAdapter = new SQLiteAdapter(this);
    //  this.stopSelf();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        final Handler mHandler = new Handler();

        new Thread(new Runnable(){

            @Override
            public void run() {
                Log.e("Service Started", "Successful");
                while(true){
                    try{
                        Thread.sleep(10000);
                        mHandler.post(new Runnable() {

                            @Override
                            public void run() {
                                //Checking network connectivity
                                wifi=NetworkInfo.Wifi(DataService.this);
                                edge=NetworkInfo.EDGE(DataService.this);

                                if(wifi==true||edge==true)
                                {
                                    int count=mySQLiteAdapter.getCCount();
                                    int counter=0;

                                    if(mySQLiteAdapter.getCCount()>0){

                                        while(counter<count){
                                            Log.e("Service Network", "Network is online");

                                            int id=mySQLiteAdapter.getID();

                                            List<NameValuePair> contacts=new ArrayList<NameValuePair>();

                                            contacts=mySQLiteAdapter.getSingleRecord(id);

                                            String url="http://10.0.2.2:3325/Product/Create?"; 

                                            int response = 0;
                                            try 
                                            {   
                                                response = CustomHttpClient.executeHttpPost(url, contacts);

                                                if(response==200){
                                                    mySQLiteAdapter.delete_byID(id);
                                                    Log.e("Data Sent", "Response 200");
                                                    counter++;
                                                }

                                                else{

                                                    Log.e("Service Data", "Faield to upload data" );
                                                }

                                            }
                                            catch (Exception e)
                                            {
                                                Log.e("Data Sending Error", e.toString());
                                                e.printStackTrace();
                                            }
                                        }
                                    }
                                    //
                                    Thread.currentThread().interrupt(); 
                                }
                                else
                                {
                                    Log.e("Service Network", "Network is offline");
                                }
                            }
                        });
                    }
                    catch (InterruptedException e) {
                        Log.e("Data Sending Error", e.toString());
                        e.printStackTrace();
                    }
                }
            }
        }).start();
        return START_STICKY;
    }

    @Override
    public IBinder onBind(Intent arg0) {
        // TODO Auto-generated method stub
        return null;
    }

    @Override
    public void onDestroy() {

        Log.v("SERVICE","Service killed");
        Toast.makeText(this, "Service Destroyed", Toast.LENGTH_SHORT).show();
        //timer.cancel();
        Intent callIntent = new Intent(Intent.ACTION_CALL); 
        callIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
        callIntent.setClass(this, com.remote.synchronizer.haris.Login.class);
        startActivity(callIntent);
        super.onDestroy();
    }

}

在某个地方，我已经读过，不要停止服务Android将自行停止。如果是这样，那么请编辑我的代码并告诉我如何在工作完成后开始新的活动。我需要停止计时器吗？然后onStartCommand将停止，它将调用onDestroy？如果是，那么我怎么能停止计时器，因为我已经尝试但没有成功。

Answer 1

如果您需要服务在完成后自行停止，您应该使用IntentService
onDestory（）用于释放您的资源，当不再使用该服务时将调用它。

开始这样的活动：

final Handler mHandler = new Handler() {
    public void HandleMessage(Message msg) {
        if(msg.what == START_NEW_ACTIVITY) {
            Intent callIntent = new Intent(Intent.ACTION_CALL); 
            callIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
            callIntent.setClass(this, com.remote.synchronizer.haris.Login.class);
            startActivity(callIntent);
        }
    }
};
public int onStartCommand(Intent intent, int flags, int startId) {
    new Thread() {
        @Override
        public void run() {
            // do your job here
            mHandler.sendEmptyMessage(START_NEW_ACTIVITY);
       }
    }.start();
}

Answer 2

要在完成工作后停止服务，只需致电stopSelf()或stopSelf(startId)。

如果要在服务完成后启动活动，在调用stopSelf()或stopSelf(startId)之前，您应该创建活动的意图并设置标记mIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);。并致电startActivity(intent)

开始您的活动

如何在执行一段时间后停止服务并启动新活动？

2 个答案: