1 , Principle :
When the Android system to complete BOOT later stage, will send a named ACTION_BOOT_COMPLETED broadcast, we will come out in a BroadcastReceiver capture this broadcast, and then start our Activity or Service , of course, to note that our application must capture the broadcast rights, see the following specific steps:
The first step: First, there must be one for the start-up of Activity or Service , here in the simplest system to create their own Activity example to explain.
package com.billhoo.study;
import android.app.Activity;
import android.os.Bundle;
public class BootTestActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
}
Brother two steps: We want to write a BroadcastReceiver to capture ACTION_BOOT_COMPLETED this broadcast, and we start to be started after the capture Activity .
package com.billhoo.study;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
public class BootCompletedReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_BOOT_COMPLETED))
{
Intent newIntent = new Intent(context, BootTestActivity.class);
newIntent.addFlags (Intent.FLAG_ACTIVITY_NEW_TASK); // Note that you must add the mark, or fails to start
context.startActivity(newIntent);
// Note: If you are going to see the boot program uses startActivity, if you wish to start a service with startService
}
}
}
The third step: in AndroidManifest.xml Sign up for our profile BroadcastReceiver
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.billhoo.study" android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="4" />
<! - Note a point: You must add permission Permissions ->
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<!-- activities -->
<activity android:name=".BootTestActivity" android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<! - Note Point two: plus receivers content ->
<receiver android:name=".BootCompletedReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
</application>
</manifest>
Reproduced in: https: //www.cnblogs.com/postmaster/p/3756050.html