1. Dienstregistrierung
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.soface.servicedemo">
<application
android:allowBackup="true"
android:dataExtractionRules="@xml/data_extraction_rules"
android:fullBackupContent="@xml/backup_rules"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/Theme.ServiceDemo"
tools:targetApi="31">
<!--服务注册-->
<service
android:name="com.soface.servicedemo.service.MyService"
android:enabled="true"
android:exported="true"></service>
<activity
android:name=".MainActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Zweitens die grundlegende Schreibmethode des Dienstes
package com.soface.servicedemo.service;
import android.app.Service;
import android.content.Intent;
import android.os.Binder;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.util.Log;
import androidx.annotation.NonNull;
import com.soface.servicedemo.Interface.ActionCallback;
public class MyService extends Service {
private MyBinder binder=new MyBinder();
public class MyBinder extends Binder{
public MyService getService(){
return MyService.this;
}
}
@Override
public IBinder onBind(Intent intent) {
Log.d("fxHou","onBind");
return binder;
}
@Override
public void onCreate() {
super.onCreate();
Log.d("fxHou","onCreate");
startCycle();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.d("fxHou","onStartCommand");
return START_NOT_STICKY;//非粘性服务
}
@Override
public boolean onUnbind(Intent intent) {
Log.d("fxHou","onUnbind");
return super.onUnbind(intent);
}
@Override
public void onDestroy() {
super.onDestroy();
Log.d("fxHou","onDestroy");
stopCycle();
}
ActionCallback<String,Integer> actionCallback;
public void getAction(ActionCallback<String,Integer> actionCallback){
this.actionCallback=actionCallback;
}
//==================================Handler模拟一个循环打印任务=====================================
private int MESSAGE_WHAT=0xFFFF;
private int progress=0;
private Handler handler=new Handler(Looper.getMainLooper()){
@Override
public void handleMessage(@NonNull Message msg) {
super.handleMessage(msg);
if (msg.what==MESSAGE_WHAT){
if (actionCallback!=null)actionCallback.actionDo("Progress",msg.arg1);
startCycle();
}
}
};
//开始循环
private void startCycle(){
progress=progress+1;
Message message=new Message();
message.what=MESSAGE_WHAT;
message.arg1=progress;
handler.sendMessageDelayed(message,1000);
}
//停止循环
private void stopCycle(){
handler.removeMessages(MESSAGE_WHAT);
}
}
3. Betriebsdienst in Aktivität
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/black"
tools:context=".MainActivity">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/start_service"
android:text="启动"
android:textSize="20dp"
android:backgroundTint="@color/white"
android:textColor="@color/black"
android:layout_width="100dp"
android:layout_height="100dp"/>
<Button
android:id="@+id/bind_service"
android:text="绑定"
android:textSize="20dp"
android:backgroundTint="@color/white"
android:textColor="@color/black"
android:layout_width="100dp"
android:layout_height="100dp"/>
<Button
android:id="@+id/unbind_service"
android:text="解绑"
android:textSize="20dp"
android:backgroundTint="@color/white"
android:textColor="@color/black"
android:layout_width="100dp"
android:layout_height="100dp"/>
<Button
android:id="@+id/stop_service"
android:text="停止"
android:textSize="20dp"
android:backgroundTint="@color/white"
android:textColor="@color/black"
android:layout_width="100dp"
android:layout_height="100dp"/>
<SeekBar
android:id="@+id/progress"
android:background="@color/white"
android:layout_marginTop="10dp"
android:layout_width="match_parent"
android:layout_height="40dp"/>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
package com.soface.servicedemo;
import androidx.appcompat.app.AppCompatActivity;
import android.app.Service;
import android.content.ComponentName;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.SeekBar;
import com.soface.servicedemo.Interface.ActionCallback;
import com.soface.servicedemo.service.MyService;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private Intent myServiceIntent;
private SeekBar progress;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button start=(Button) findViewById(R.id.start_service);
Button bind=(Button) findViewById(R.id.bind_service);
Button unbind=(Button) findViewById(R.id.unbind_service);
Button stop=(Button) findViewById(R.id.stop_service);
progress=(SeekBar)findViewById(R.id.progress);
progress.setMax(100);
start.setOnClickListener(this::onClick);
unbind.setOnClickListener(this::onClick);
bind.setOnClickListener(this::onClick);
stop.setOnClickListener(this::onClick);
myServiceIntent=new Intent(this, MyService.class);
}
private ServiceConnection connection=new ServiceConnection() {
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
Log.d("fxHou","绑定="+name);
MyService.MyBinder myBinder= (MyService.MyBinder) service;
myBinder.getService().getAction(new ActionCallback<String, Integer>() {
@Override
public void actionDo(String key, Integer value) {
Log.d("fxHou",key+"="+value);
progress.setProgress(value);
}
});
}
@Override
public void onServiceDisconnected(ComponentName name) {
Log.d("fxHou","断开绑定="+name);
}
};
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.start_service:
startService(myServiceIntent);
break;
case R.id.bind_service:
bindService(myServiceIntent,connection, Service.BIND_AUTO_CREATE);
break;
case R.id.unbind_service:
unbindService(connection);
break;
case R.id.stop_service:
stopService(myServiceIntent);
break;
default:
break;
}
}
}
Auxiliary: Die Schnittstelle, die zum Abrufen von Daten verwendet wird
package com.soface.servicedemo.Interface;
/**
* 回调接口
* @param <K>
* @param <V>
*/
public interface ActionCallback<K,V> {
void actionDo(K key, V value);
}
Hinweis: Hinweise für den persönlichen Gebrauch, nur als Referenz