Android使用StartService、BindService以及IntentService简单实现Toast

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我是靠谱客的博主大气冬瓜，最近开发中收集的这篇文章主要介绍Android使用StartService、BindService以及IntentService简单实现Toast，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

一、实现效果

点击不同的按钮，用不同的方式开启/关闭Service，在屏幕底部出现Toast

在这里插入图片描述

二、步骤

1、构造MyService.java、MyBindService.java、MyIntentService.java
2、改变MainActivity.java的布局
3、在MainActivity中实现相应按钮的点击响应
4、在AndroidManifest.xml中声明几个Service类

三、代码

1、构造MyService.java、MyBindService.java、MyIntentService.java

MyService.java

public class MyService extends Service {
    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        // Let it continue running until it is stopped.
        Toast.makeText(this, "Start Service", Toast.LENGTH_LONG).show();
        return START_STICKY;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Toast.makeText(this, "Stop Service", Toast.LENGTH_LONG).show();
    }
}

MyBindService.java

public class MyBindService extends Service
{
    public class MyBinder extends Binder
    {
        public MyBindService getService()
        {
            return MyBindService.this;
        }
    }

    MyBinder myBinder = new MyBinder();

    public void onCreate(){
        super.onCreate();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        return START_NOT_STICKY;
    }

    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        Toast.makeText(this, "Bind Service", Toast.LENGTH_LONG).show();
        return myBinder;
    }

    @Override
    public boolean onUnbind(Intent intent) {
        Toast.makeText(this, "Unbind Service", Toast.LENGTH_LONG).show();
        return false;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
    }

}

MyIntentService.java

public class MyIntentService extends IntentService {

    private Handler handler;

    public MyIntentService()
    {
        super("MyIntentService");
    }

    @Override
    public void onCreate() {
        super.onCreate();
        handler = new Handler();
    }

    protected void onHandleIntent(Intent intent)
    {
        handler.post(new Runnable() {
            @Override
            public void run() {
                Toast.makeText(getApplicationContext(), "Intent Service", Toast.LENGTH_SHORT).show();
            }
        });
    }
}

2、改变MainActivity.java的布局

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:layout_marginTop="100dp"
    tools:context=".MainActivity">
    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:layout_gravity="center_horizontal">
        <Button
            android:id="@+id/start_service"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:layout_marginVertical="10dp"
            android:textAllCaps="false"
            android:text="StartService"/>
        <Button
            android:id="@+id/stop_service"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:layout_marginVertical="10dp"
            android:textAllCaps="false"
            android:text="StopService"/>
        <Button
            android:id="@+id/bind_service"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:layout_marginVertical="10dp"
            android:textAllCaps="false"
            android:text="BindService"/>
        <Button
            android:id="@+id/unbind_service"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:layout_marginVertical="10dp"
            android:textAllCaps="false"
            android:text="UnbindService"/>
        <Button
            android:id="@+id/intent_service"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:layout_marginVertical="10dp"
            android:textAllCaps="false"
            android:text="IntentService"/>
    </LinearLayout>
</LinearLayout>

3、在MainActivity中实现相应按钮的点击响应

MainActivity.java

public class MainActivity extends AppCompatActivity {

    private boolean isBind = false;

    private ServiceConnection connection = new ServiceConnection() {
        @Override
        public void onServiceConnected(ComponentName name, IBinder service) {
            isBind=true;
            MyBindService.MyBinder myBinder = (MyBindService.MyBinder)service;
            MyBindService myBindService = myBinder.getService();
        }

        @Override
        public void onServiceDisconnected(ComponentName name) {
            isBind = false;
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button start_service = (Button) findViewById(R.id.start_service);
        Button stop_service = (Button) findViewById(R.id.stop_service);
        Button bind_service = (Button) findViewById(R.id.bind_service);
        Button unbind_service = (Button) findViewById(R.id.unbind_service);
        Button intent_service = (Button) findViewById(R.id.intent_service);

        start_service.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,MyService.class);
                startService(intent);
            }
        });

        stop_service.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,MyService.class);
                stopService(intent);
            }
        });

        bind_service.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,MyBindService.class);
                bindService(intent,connection,BIND_AUTO_CREATE);
            }
        });

        unbind_service.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(isBind)
                {
                    unbindService(connection);
                }
            }
        });

        intent_service.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this,MyIntentService.class);
                startService(intent);
            }
        });
    }
}

4、在AndroidManifest.xml中声明几个Service类

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.practice6">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <service android:name=".MyService"></service>
        <service android:name=".MyBindService"></service>
        <service android:name=".MyIntentService"></service>
    </application>

</manifest>