安卓四大组件-服务-2_服务基本用法

服务基本用法

<?xml version="1.0"encoding="utf-8"?>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <Button
        android:id="@+id/start_service"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Start Service"/>

    <Button
        android:id="@+id/stop_service"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Stop Service"/>

    <Button
        android:id="@+id/bind_service"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Bind Service"/>

    <Button
        android:id="@+id/unbind_service"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Unbind Service"/>

    <Button
        android:id="@+id/start_intent_service"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Start IntentService"/>

</LinearLayout>

 

packagecom.example.servicetest;

import android.content.ComponentName;
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;

public class MainActivity extendsAppCompatActivity implementsView.OnClickListener{

    privateMyService.DownloadBinder downloadBinder;

    privateServiceConnection connection= newServiceConnection() {

        @Override
        public voidonServiceDisconnected(ComponentName name) {
        }

        @Override
        public voidonServiceConnected(ComponentName name, IBinder service) {
            downloadBinder = (MyService.DownloadBinder) service;
            downloadBinder.startDownload();
            downloadBinder.getProgress();
        }
    };

    @Override
    protected voidonCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button startService = (Button) findViewById(R.id.start_service);
        Button stopService = (Button) findViewById(R.id.stop_service);
        startService.setOnClickListener(this);
        stopService.setOnClickListener(this);
        Button bindService = (Button) findViewById(R.id.bind_service);
        Button unbindService = (Button) findViewById(R.id.unbind_service);
        bindService.setOnClickListener(this);
        unbindService.setOnClickListener(this);
        Button startIntentService = (Button) findViewById(R.id.start_intent_service);
        startIntentService.setOnClickListener(this);
    }

    @Override
    public voidonClick(View v) {
        switch(v.getId()) {
            caseR.id.start_service:
                Intent startIntent = newIntent(this, MyService.class);
                startService(startIntent); // 启动服务
                break;
            caseR.id.stop_service:
                Intent stopIntent = newIntent(this, MyService.class);
                stopService(stopIntent); // 停止服务
                break;
            caseR.id.bind_service:
                Intent bindIntent = newIntent(this, MyService.class);
                bindService(bindIntent, connection,BIND_AUTO_CREATE);// 绑定服务
                break;
            caseR.id.unbind_service:
                unbindService(connection);// 解绑服务
                break;
            caseR.id.start_intent_service:
                // 打印主线程的id
                Log.d("MainActivity","Thread id is " + Thread.currentThread(). getId());
                Intent intentService = new Intent(this, MyIntentService.class);
                startService(intentService);
                break;
            default:
                break;
        }
    }

}

 

packagecom.example.servicetest;

import android.app.IntentService;
import android.content.Intent;
import android.util.Log;

public class MyIntentService extendsIntentService {

    publicMyIntentService() {
        super("MyIntentService");// 调用父类的有参构造函数
    }

    @Override
    protected voidonHandleIntent(Intent intent) {
        // 打印当前线程的id
        Log.d("MyIntentService","Thread id is " + Thread.currentThread(). getId());
    }

    @Override
    public voidonDestroy() {
        super.onDestroy();
        Log.d("MyIntentService","onDestroy executed");
    }

}

 

 

packagecom.example.servicetest;

import android.app.Notification;
import android.app.PendingIntent;
import android.app.Service;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.os.Binder;
import android.os.IBinder;
import android.support.v4.app.NotificationCompat;
import android.util.Log;

/**
 * 活动和服务进行通信
 */
public classMyService extendsService {

    publicMyService() {
    }

    privateDownloadBinder mBinder= newDownloadBinder();

    classDownloadBinder extendsBinder {

        public voidstartDownload() {
            Log.d("MyService","startDownload executed");
        }

        public intgetProgress() {
            Log.d("MyService","getProgress executed");
            return0;
        }

    }

    @Override
    publicIBinder onBind(Intent intent) {
        returnmBinder;
    }

    @Override
    public voidonCreate() {
        super.onCreate();
        Log.d("MyService","onCreate executed");
        Intent intent = newIntent(this, MainActivity.class);
        PendingIntent pi = PendingIntent.getActivity(this,0, intent,0);
        Notification notification = newNotificationCompat.Builder(this)
                .setContentTitle("This is content title")
                .setContentText("This is content text")
                .setWhen(System.currentTimeMillis())
                .setSmallIcon(R.mipmap.ic_launcher)
                .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher))
                .setContentIntent(pi)
                .build();
        startForeground(1, notification);
    }

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

    @Override
    public voidonDestroy() {
        super.onDestroy();
        Log.d("MyService","onDestroy executed");
    }

}