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Android Service在后台一直运行监测案例

芒果六斤半 2022-03-17 阅读 60


1、定义 Service

package com.example.scangundemo_as;

import android.app.ActivityManager;
import android.app.Service;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.res.Resources;
import android.os.IBinder;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import android.util.Log;

import java.util.List;
import java.util.logging.Logger;

public class APPService extends Service {

private static final String packageName = "com.example.scangundemo_as";
private static final String className = "MainActivity";

@Override
public void onCreate() {
super.onCreate();
Log.i("Service","-------create-------");
}

@Override
public void onDestroy() {
super.onDestroy();
Log.i("Service","-------onDestroy-------");
}

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
Log.i("Service","-----service onStartCommand...");
new Thread(){
@Override
public void run() {
super.run();
while(true){
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}
//一直运行
boolean isRunningForeground = isRunningForeground(APPService.this);
// Log.i("Service","-----service isRunningForeground="+isRunningForeground);
if(!isRunningForeground){
Log.i("Service","-----start activity-----");
startActivityTool(APPService.this);
}
}
}
}.start();
return super.onStartCommand(intent, flags, startId);
}

@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
public static boolean isRunningForeground (Context context) {
ActivityManager am = (ActivityManager)context.getSystemService(Context.ACTIVITY_SERVICE);
ComponentName cn = am.getRunningTasks(1).get(0).topActivity;
String currentPackageName = cn.getPackageName();
if(!TextUtils.isEmpty(currentPackageName) && currentPackageName.equals(context.getPackageName())) {
return true ;
}
return false ;
}

public static void startActivityTool(Context context){
Intent intent = new Intent();
intent.setClass(context, MainActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK );
context.startActivity(intent);
}


}


2、启动Service

//启动service
Intent intent = new Intent(this,APPService.class);
startService(intent);


3、清单文件AndroidManifest.xml 声明Service

<service android:name=".APPService" android:enabled="true" android:exported="true">
</service>





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