Android开机自启动程序
背景知识：当Android启动时，会发出一个系统广播，内容为ACTION_BOOT_COMPLETED，它的字
符串常量表示为 android.intent.action.BOOT_COMPLETED。只要在程序中“捕捉”到这个消息，再启动之
即可。记住，Android框架说：Don''t call me, I''ll call you back。我们要做的是做好接收这个消息的准备，而
实现的手段就是实现一个BroadcastReceiver。
1、界面Activity,BootStartDemo.java文件
public
class
BootStartDemo
extends
Activity {
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@Override
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public
void
onCreate(Bundle savedInstanceState) {
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super
.onCreate(savedInstanceState);
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// 无title
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requestWindowFeature(Window.FEATURE_NO_TITLE);
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// 全屏
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getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
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WindowManager.LayoutParams.FLAG_FULLSCREEN);
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setContentView(R.layout.main);
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new
Thread() {
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public
void
run() {
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try
{
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sleep(
10000
);
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}
catch
(Exception e) {
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e.printStackTrace();
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}
finally
{
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finish();
// 关闭页面
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}
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}
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}.start();
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}
}
这段代码很简单，当Activity 启动时，会显示TextView，用它显示你想显示的字样，并且这个页面只显示10秒后消失。
2、接收广播消息：BootBroadcastReceiver.java
public
class
BootBroadcastReceiver
extends
BroadcastReceiver {
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static
final
String action_boot=
"android.intent.action.BOOT_COMPLETED"
;
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@Override
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public
void
onReceive(Context context, Intent intent) {
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if
(intent.getAction().equals(action_boot)){
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Intent ootStartIntent=
new
Intent(context,BootStartDemo.
class
);
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ootStartIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
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context.startActivity(ootStartIntent);
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}
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}
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}
该类继续自 BroadcastReceiver，覆载方法 onReceive 中，检测接收到的 Intent 是否符合
BOOT_COMPLETED，如果符合，则启动BootStartDemo这个Activity。
3、配置文件
(1)AndroidManifest.xml ：
<?xml version=
"1.0"
encoding=
"utf-8"
?>
<!-- 这是一个开机自启动程序 -->
<manifest xmlns:android=
"http://schemas.android.com/apk/res/android"
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package
=
"com.ajie.bootstartdemo"
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android:versionCode=
"1"
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android:versionName=
"1.0"
>
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<application android:icon=
"@drawable/icon"
android:label=
"@string/app_name"
>
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<activity android:name=
".BootStartDemo"
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android:label=
"@string/app_name"
>
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<intent-filter>
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<action android:name=
"android.intent.action.MAIN"
/>
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<category android:name=
"android.intent.category.LAUNCHER"
/>
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</intent-filter>
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</activity>
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<span style=
"color: #ff00ff;"
><receiver android:name=
".BootBroadcastReceiver"
>
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<intent-filter>
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<action android:name=
"android.intent.action.BOOT_COMPLETED"
/>
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<category android:name=
"android.intent.category.HOME"
/>
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</intent-filter>
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</receiver>
</span><wbr><wbr><wbr> </application></wbr></wbr></wbr>
<span style=
"color: #ff00ff;"
><strong><uses-permission android:name=
"android.permission.RECEIVE_BOOT_COMPLETED"
></uses-permission></strong>
</span></manifest>
注意其中颜色标红那一部分，该节点向系统注册了一个 receiver，子节点 intent-filter 表示接收
android.intent.action.BOOT_COMPLETED 消息。并且还要配置android.permission.RECEIVE_BOOT_COMPLETED权限。
(2)Layout文件，main.xml
<?xml version=
"1.0"
encoding=
"utf-8"
?>
<LinearLayout xmlns:android=
"http://schemas.android.com/apk/res/android"
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android:orientation=
"vertical"
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android:layout_width=
"fill_parent"
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android:layout_height=
"fill_parent"
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>
<TextView<wbr></wbr>
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android:layout_width=
"fill_parent"
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android:layout_height=
"fill_parent"
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android:text=
"@string/boottext"
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android:textColor=
"#5F2DD2"
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android:background=
"#FFFFFF"
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android:textSize=
"60px"
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android:gravity=
"center_horizontal"
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/>
</LinearLayout>
完成后，编译出apk包，安装到模拟器或手机中。关机，重新开机，就会显示BootStartDemo这个Activity显示出来的页面。