您的位置:首页 > 移动开发 > Android开发

android上怎样让一个Service开机自动启动

2011-01-11 14:56 447 查看
1.首先开机启动后系统会发出一个Standard Broadcast Action,名字叫android.intent.action.BOOT_COMPLETED,这个Action只会发出一次。

2.构造一个IntentReceiver类,重构其抽象方法onReceiveIntent(Context context, Intent intent),在其中启动你想要启动的Service。

3.在AndroidManifest.xml中,首先加入<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"></uses-permission>来获得BOOT_COMPLETED的使用许可,然后注册前面重构的IntentReceiver类,在其<intent-filter>中加入<action android:name="android.intent.action.BOOT_COMPLETED" /> ,以使其能捕捉到这个Action。

一个例子
xml:

Java代码

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"></uses-permission>

<receiver android:name=".OlympicsReceiver" android:label="@string/app_name">

<intent-filter>

<action android:name="android.intent.action.BOOT_COMPLETED" />

<category android:name="android.intent.category.LAUNCHER" />

</intent-filter>

</receiver>

<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"></uses-permission>
<receiver android:name=".OlympicsReceiver" android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</receiver>

java:

Java代码

public class OlympicsReceiver extends IntentReceiver

{

/*要接收的intent源*/

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

public void onReceiveIntent(Context context, Intent intent)

{

if (intent.getAction().equals(ACTION))

{

context.startService(new Intent(context,

OlympicsService.class), null);//启动倒计时服务

Toast.makeText(context, "OlympicsReminder service has started!", Toast.LENGTH_LONG).show();

}

}

}

public class OlympicsReceiver extends IntentReceiver
{
/*要接收的intent源*/
static final String ACTION = "android.intent.action.BOOT_COMPLETED";

public void onReceiveIntent(Context context, Intent intent)
{
if (intent.getAction().equals(ACTION))
{
context.startService(new Intent(context,
OlympicsService.class), null);//启动倒计时服务
Toast.makeText(context, "OlympicsReminder service has started!", Toast.LENGTH_LONG).show();
}
}
}

注意:现在的IntentReceiver已经变为BroadcastReceiver,OnReceiveIntent为onReceive。所以java这边的代码为:

(也可以实现应用程序开机自动启动)

Java代码

public class OlympicsReceiver extends BroadcastReceiver

{

/*要接收的intent源*/

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

public void onReceive(Context context, Intent intent)

{

if (intent.getAction().equals(ACTION))

{

context.startService(new Intent(context,

OlympicsService.class), null);//启动倒计时服务

Toast.makeText(context, "OlympicsReminder service has started!", Toast.LENGTH_LONG).show();

//这边可以添加开机自动启动的应用程序代码

}

}

}
内容来自用户分享和网络整理,不保证内容的准确性,如有侵权内容,可联系管理员处理 点击这里给我发消息
标签: