Android开发之开机启动某应用以及定时重启应用

前言

最近因项目需求，在类似于ATM机上的android系统上开发一款app,需要实现开机即启动app,防止客户脱离app做其他操作，并且需要定时重启项目更新某些数据。

1.实现开机即启动思路

实际上，系统开机的时候就会发送一条开机的广播，我们要做的就是写一个开机启动的广播接收器，当接收到这条广播的时候，启动入口activity即可。

2.定时重启app思路

继承Application类，在onCreate()方法中注册了一个服务，此服务绑定于我们继承的Application类，然后在定时器（TimerTask）执行重启的逻辑。

主要代码

开机启动主要代码

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;

/**
* 开机广播接受者
* @author jiangbing
*
*/
public class BootBroadcastReceiver extends BroadcastReceiver {

private static final String ACTION = "android.intent.action.BOOT_COMPLETED";

@Override
public void onReceive(Context context, Intent intent) {
if (ACTION.equals(intent.getAction())) {
// 开机即启动此应用
Intent mIntent = new Intent(context, MainActivity.class);
mIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(mIntent);
}
}

}

定时重启

App.java

import android.app.Application;
import android.content.ComponentName;
<
4000
span class="hljs-keyword">import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.widget.Toast;

public class App extends Application {

private ServiceConnection conn = new ServiceConnection() {

/**
* Called when a connection to the Service has been established,
* with the android.os.IBinder of the communication channel to the Service.
*/
@Override
public void onServiceConnected(ComponentName name, IBinder service) {
RestartAppService.MyBinder mBinder = (RestartAppService.MyBinder) service;
mBinder.startRestartTask(App.this);
}

@Override
public void onServiceDisconnected(ComponentName name) {}

};

@Override
public void onCreate() {
super.onCreate();
Toast.makeText(this, "app启动了", Toast.LENGTH_LONG).show();
// 启动服务，用于定时重启app
Intent intent = new Intent(this, RestartAppService.class);
bindService(intent, conn, Context.BIND_AUTO_CREATE);
}
}

RestartAppService.java

import java.util.Timer;
import java.util.TimerTask;

import android.app.ActivityManager;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.Binder;
import android.os.IBinder;
import android.widget.Toast;

/**
* 重启app服务
* @author jiangbing
*
*/
public class RestartAppService extends Service {

private static final long RESTART_DELAY = 30 * 1000; // 多少时间后重启
private MyBinder mBinder;

// 此对象用于绑定的service与调用者之间的通信
public class MyBinder extends Binder {

/**
* 获取service实例
* @return
*/
public RestartAppService getService() {
return RestartAppService.this;
}

/**
* 启动app重启任务
*/
public void startRestartTask(final Context context) {
Toast.makeText(context, "start", Toast.LENGTH_SHORT).show();

TimerTask task = new TimerTask() {

@Override
public void run() {
// restart
Intent intent = getPackageManager().getLaunchIntentForPackage(
getApplication().getPackageName());
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
System.exit(0);
}
};

Timer timer = new Timer();
//          long delay = 0;
//          long intervalPeriod = 1 * 1000;
timer.schedule(task, RESTART_DELAY);
}
}

@Override
public IBinder onBind(Intent intent) {
// Create MyBinder object
if (mBinder == null) {
mBinder = new MyBinder();
}
return mBinder;
}

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

}

点此下载demo