Android(安卓)技巧 - 开机完成后做某事 （比如启动Service）
16lz
2021-12-04
It's possible to register your own application service for starting automatically when the device has been booted. You need this, for example, when you want to receive push events from a http server and want to inform the user as soon a new event occurs. The user doesn't have to start the activity manually before the service get started...
It's quite simple. First give your app the permissionRECEIVE_BOOT_COMPLETED.
Next you need to register a BroadcastReveiver. We call it BootCompletedIntentReceiver.
Your Manifest.xml should now look like this:
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.jjoe64"> <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/> <application> <receiver android:name=".BootCompletedIntentReceiver"> <intent-filter> <action android:name="android.intent.action.BOOT_COMPLETED" /> </intent-filter> </receiver> <service android:name=".BackgroundService"/> </application></manifest>
As the last step you have to implement the Receiver. This receiver just starts your background service.
package com.jjoe64;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.SharedPreferences;import android.preference.PreferenceManager;import com.jjoe64.BackgroundService;public class BootCompletedIntentReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { if ("android.intent.action.BOOT_COMPLETED".equals(intent.getAction())) { Intent pushIntent = new Intent(context, BackgroundService.class); context.startService(pushIntent); } }}
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