Android服务显式启动、隐式启动、绑定服务

工程目录：

app-MainActivity

package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    private String otherPackage;

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

        findViewById(R.id.button).setOnClickListener(this);
        findViewById(R.id.button2).setOnClickListener(this);
        findViewById(R.id.button3).setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.button:
                otherPackage="com.example.app1";
                break;
            case R.id.button2:
                otherPackage="com.example.app2";
                break;
            case R.id.button3:
                otherPackage="com.example.app3";
                break;
        }
        Intent intent=getPackageManager().getLaunchIntentForPackage(otherPackage);
        if(intent==null){
            Toast.makeText(this, "not this app", Toast.LENGTH_SHORT).show();
        }else{
            startActivity(intent);
        }
    }
}

app1-MainActivity

package com.example.app1;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

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

        findViewById(R.id.button).setOnClickListener(this);
        findViewById(R.id.button2).setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        Intent intent;
        switch (v.getId()){
            case R.id.button:
                Toast.makeText(this, "play music", Toast.LENGTH_SHORT).show();
                intent=new Intent(MainActivity.this,MyService.class);
                startService(intent);
                findViewById(R.id.button).setEnabled(false);
                findViewById(R.id.button2).setEnabled(true);
                break;
            case R.id.button2:
                Toast.makeText(this, "stop music", Toast.LENGTH_SHORT).show();
                intent=new Intent(MainActivity.this,MyService.class);
                stopService(intent);
                findViewById(R.id.button).setEnabled(true);
                findViewById(R.id.button2).setEnabled(false);
                break;
        }
    }
}

MyService

package com.example.app1;

import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.IBinder;

public class MyService extends Service {
    MediaPlayer mp;
    public MyService() {
    }

    @Override
    public void onCreate() {
        super.onCreate();
        mp=MediaPlayer.create(getApplicationContext(),R.raw.cc);
        mp.start();
    }

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

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

app2-MainActivity

package com.example.app2;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

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

        findViewById(R.id.button).setOnClickListener(this);
        findViewById(R.id.button2).setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        Intent intent;
        switch (v.getId()){
            case R.id.button:
                Toast.makeText(this, "play music", Toast.LENGTH_SHORT).show();
                /*intent=new Intent(MainActivity.this,MyService.class);*/
                intent=new Intent("com.zlm.MAS");
                intent.setPackage("com.example.app2");
                startService(intent);
                findViewById(R.id.button).setEnabled(false);
                findViewById(R.id.button2).setEnabled(true);
                break;
            case R.id.button2:
                Toast.makeText(this, "stop music", Toast.LENGTH_SHORT).show();
                /*intent=new Intent(MainActivity.this,MyService.class);*/
                intent=new Intent("com.zlm.MAS");
                intent.setPackage("com.example.app2");
                stopService(intent);
                findViewById(R.id.button).setEnabled(true);
                findViewById(R.id.button2).setEnabled(false);
                break;
        }
    }
}

MyService

package com.example.app2;

import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.IBinder;

public class MyService extends Service {
    MediaPlayer mp;
    public MyService() {
    }

    @Override
    public void onCreate() {
        super.onCreate();
        mp=MediaPlayer.create(getApplicationContext(),R.raw.cc);
        mp.start();
    }

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

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

Manifestes

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.app2">

    <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" android:enabled="true" android:exported="true">
            <intent-filter>
                <action android:name="com.zlm.MAS"/>
                <category android:name="android.intent.category.DEFAULT"/>
            </intent-filter>
        </service>
    </application>

</manifest>

app3-MainActivity

package com.example.app3;

import androidx.appcompat.app.AppCompatActivity;

import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        final ServiceConnection conn=new ServiceConnection() {
            @Override
            public void onServiceConnected(ComponentName name, IBinder service) {
                MyService.PlayBinder playBinder= (MyService.PlayBinder) service;
                playBinder.MyMethod();
            }
            @Override
            public void onServiceDisconnected(ComponentName name) {
            }
        };
        Intent intent=new Intent("com.zlm.MPS");
        intent.setPackage("com.example.app3");
        bindService(intent,conn,BIND_AUTO_CREATE);
    }
}

MyService

package com.example.app3;

import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.os.Binder;
import android.os.IBinder;

public class MyService extends Service {
    private MediaPlayer mp;

    public  class PlayBinder extends Binder {
        public  void MyMethod(){
            mp=MediaPlayer.create(getApplicationContext(),R.raw.cc);
            mp.start();
        }
    }
    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        //throw new UnsupportedOperationException("Not yet implemented");
        return  new PlayBinder();
    }
    @Override
    public void onDestroy(){
        if(mp!=null){
            mp.stop();
            mp.release();
        }
        super.onDestroy();
    }
}

Manifestes

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.app3">
    <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">
        <service
            android:name=".MyService"
            android:enabled="true"
            android:exported="true">
            <intent-filter>
                <action android:name="com.zlm.MPS"/>
                <category android:name="android.intent.category.DEFAULT"/>
            </intent-filter>
        </service>
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
</manifest>

本文地址：https://blog.csdn.net/weixin_43873198/article/details/108848034