Android 中的 Service 三种启动方式

时间：2015-12-05 14:22:53 阅读：175 评论：0 收藏：0 [点我收藏+]

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1.start Service 不会随着activity finish 而关闭，必须调用 stop方法

每次调用都会调用onstart方法

package com.weidingqiang.customnetroid;

import android.app.Service;
import android.content.Intent;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;

import java.util.ArrayList;
import java.util.List;

public class StartService extends Service {

    private static final String TAG = StartService.class.getSimpleName();

    public StartService() {
        Log.d(TAG,"StartService()");
    }

    @Override
    public void onCreate() {
        super.onCreate();
        Log.d(TAG, "onCreate()");
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d(TAG,"onStartCommand()");

        Bundle bundle = intent.getBundleExtra("bundle");

        int flag = bundle.getInt("Flag", 0);

        switch (flag)
        {
            case 0:
                Log.d(TAG, "onStartCommand()  --  0");

                List<SDownVO> list = (List<SDownVO>) bundle.getSerializable("start1");
                list.size();
                break;
            case 1:
                ArrayList<PDownVO> list1 =   bundle.getParcelableArrayList("start2");
                list1.size();
                Log.d(TAG,"onStartCommand()  --  1");
                break;
        }


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

    @Override
    public void onDestroy() {
        Log.d(TAG,"onDestroy()");
        super.onDestroy();
    }

    @Override
    public IBinder onBind(Intent intent) {
        Log.d(TAG,"onBind()");
        // TODO: Return the communication channel to the service.
        throw new UnsupportedOperationException("Not yet implemented");
    }
}

package com.weidingqiang.customnetroid;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

public class StartActivity extends AppCompatActivity implements View.OnClickListener{

    private Button start,start1,start2,end;

    private Intent intent;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test);

        start = (Button) this.findViewById(R.id.start);
        start1 = (Button) this.findViewById(R.id.start1);
        start2 = (Button) this.findViewById(R.id.start2);
        end = (Button) this.findViewById(R.id.end);

        start.setOnClickListener(this);
        start1.setOnClickListener(this);
        start2.setOnClickListener(this);
        end.setOnClickListener(this);

        intent = new Intent(this,StartService.class);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId())
        {
            case R.id.start:

                List<SDownVO> list = new ArrayList<SDownVO>();
                list.add(new SDownVO("www.baidu.com", "百度", false, 100));

                Bundle bundle = new Bundle();
                bundle.putInt("Flag", 0);
                bundle.putSerializable("start1", (Serializable) list);

                intent.putExtra("bundle",bundle);

                startService(intent);
                break;
            case R.id.start1:
                ArrayList<PDownVO> list1 = new ArrayList<PDownVO>();
                list1.add(new PDownVO("www.baidu.com", "百度", false, 100));

                Bundle bundle1 = new Bundle();
                bundle1.putInt("Flag", 1);
                bundle1.putParcelableArrayList("start2", list1);
                intent.putExtra("bundle",bundle1);

                startService(intent);
                break;
            case R.id.start2:
                finish();
                break;
            case R.id.end:
                stopService(intent);
                break;
        }
    }

    @Override
    protected void onStop() {
        super.onStop();
        stopService(intent);
    }


}

2Bind 方法

此方式会随着activity关闭而关闭

package com.weidingqiang.customnetroid;

import android.app.ActivityManager;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import java.util.List;

public class BindActivity extends AppCompatActivity implements View.OnClickListener{

    private Button start,start1,start2,end;

    private Intent intent;

    private ServiceConnection serviceConnection;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test);

        start = (Button) this.findViewById(R.id.start);
        start1 = (Button) this.findViewById(R.id.start1);
        start2 = (Button) this.findViewById(R.id.start2);
        end = (Button) this.findViewById(R.id.end);

        start.setOnClickListener(this);
        start1.setOnClickListener(this);
        start2.setOnClickListener(this);
        end.setOnClickListener(this);

        intent = new Intent(this,BindService.class);

        serviceConnection = new ServiceConnection() {
            @Override
            public void onServiceConnected(ComponentName name, IBinder service) {

            }

            @Override
            public void onServiceDisconnected(ComponentName name) {

            }
        };
    }

    @Override
    public void onClick(View v) {
        switch (v.getId())
        {
            case R.id.start:
                bindService(intent, serviceConnection,Context.BIND_AUTO_CREATE);
                break;
            case R.id.start1:
                Intent intent2 = new Intent(this,StartBindActivity.class);
                startActivity(intent2);
                finish();
                break;
            case R.id.start2:
                finish();
                break;
            case R.id.end:

                break;
        }
    }

    @Override
    protected void onStop() {

        super.onStop();
    }

    @Override
    protected void onDestroy() {
        if(isServiceRunning(this,"BindService"))
        {
            unbindService(serviceConnection);
        }

        super.onDestroy();
    }

    /**
     * 用来判断服务是否运行.
     * @param mContext
     * @param className 判断的服务名字
     * @return true 在运行 false 不在运行
     */
    public static boolean isServiceRunning(Context mContext,String className) {
        boolean isRunning = false;
        ActivityManager activityManager = (ActivityManager)
                mContext.getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningServiceInfo> serviceList
                = activityManager.getRunningServices(30);
        if (!(serviceList.size()>0)) {
            return false;
        }
        for (int i=0; i<serviceList.size(); i++) {
            if (serviceList.get(i).service.getClassName().equals(className) == true) {
                isRunning = true;
                break;
            }
        }
        return isRunning;
    }
}

package com.weidingqiang.customnetroid;

import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.util.Log;

public class BindService extends Service {

    private static final String TAG = BindService.class.getSimpleName();

    /**
     * 在 BindService 中我们直接继承 Binder 而不是 IBinder,因为 Binder 实现了 IBinder 接口，这样我们可以少做很多工作。
     */
    public class SimpleBinder extends Binder{
        /**
         * 获取 Service 实例
         * @return
         */
        public BindService getService(){
            return BindService.this;
        }

        public int add(int a, int b){
            return a + b;
        }
    }

    public SimpleBinder sBinder;

    public BindService() {
    }

    @Override
    public void onCreate() {
        super.onCreate();

        Log.d(TAG,"onCreate()");

        // 创建 SimpleBinder
        sBinder = new SimpleBinder();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d(TAG,"onStartCommand()");
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public void onDestroy() {
        Log.d(TAG,"onDestroy()");
        super.onDestroy();
    }

    @Override
    public IBinder onBind(Intent intent) {
        // 返回 SimpleBinder 对象
        return sBinder;
    }


}

3.start and bind

package com.weidingqiang.customnetroid;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

public class StartBindActivity extends AppCompatActivity implements View.OnClickListener{

    private static final String TAG = StartBindActivity.class.getSimpleName();

    private Button start,start1,start2,end;

    private Intent intent;

    private ServiceConnection serviceConnection;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test);

        start = (Button) this.findViewById(R.id.start);
        start1 = (Button) this.findViewById(R.id.start1);
        start2 = (Button) this.findViewById(R.id.start2);
        end = (Button) this.findViewById(R.id.end);

        start.setOnClickListener(this);
        start1.setOnClickListener(this);
        start2.setOnClickListener(this);
        end.setOnClickListener(this);

        intent = new Intent(this,StartBindService.class);

        serviceConnection = new ServiceConnection() {
            @Override
            public void onServiceConnected(ComponentName name, IBinder service) {
                StartBindService.SimpleBinder sBinder = (StartBindService.SimpleBinder)service;
                Log.v(TAG, "3 + 5 = " + sBinder.add(3, 5));
                Log.v(TAG, sBinder.getService().toString());
            }

            @Override
            public void onServiceDisconnected(ComponentName name) {

            }
        };
    }

    @Override
    public void onClick(View v) {
        switch (v.getId())
        {
            case R.id.start:
                startService(intent);
                bindService(intent, serviceConnection, Context.BIND_AUTO_CREATE);
                break;
            case R.id.start1:
                startService(intent);
                break;
            case R.id.start2:
                Intent intent2 = new Intent(this,BindActivity.class);
                startActivity(intent2);
                finish();
                break;
            case R.id.end:
                stopService(intent);
                break;
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        unbindService(serviceConnection);
    }
}

package com.weidingqiang.customnetroid;

import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;

import java.util.ArrayList;
import java.util.List;

public class StartBindService extends Service {
    private static final String TAG = StartBindService.class.getSimpleName();

    /**
     * 在 BindService 中我们直接继承 Binder 而不是 IBinder,因为 Binder 实现了 IBinder 接口，这样我们可以少做很多工作。
     */
    public class SimpleBinder extends Binder {
        /**
         * 获取 Service 实例
         * @return
         */
        public StartBindService getService(){
            return StartBindService.this;
        }

        public int add(int a, int b){
            return a + b;
        }
    }

    public SimpleBinder sBinder;

    public StartBindService() {
    }

    @Override
    public void onCreate() {
        super.onCreate();

        Log.d(TAG, "onCreate()");

        // 创建 SimpleBinder
        sBinder = new SimpleBinder();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d(TAG,"onStartCommand()");
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public void onDestroy() {
        Log.d(TAG,"onDestroy()");
        super.onDestroy();
    }

    @Override
    public IBinder onBind(Intent intent) {
        // 返回 SimpleBinder 对象
        return sBinder;
    }
}

Android 中的 Service 三种启动方式

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原文地址：http://www.cnblogs.com/weidingqiang/p/5021416.html

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