安卓开发中程序不能开机自启动问题

使用了广播方法`

public class BootBroadcastReceiver extends BroadcastReceiver {
static final String action_boot="android.intent.action.BOOT_COMPLETED";

@Override
public void onReceive(Context context, Intent intent) {
System.out.println("TTTTTT");
if (intent.getAction().equals(action_boot)){
Intent ootStartIntent=new Intent(context,MainActivity.class);
ootStartIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(ootStartIntent);
}
}

配置文件中权限和filter都已配置

android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
android:name=".MainActivity"
android:label="@string/app_name" >

        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>
<receiver android:name="com.example.test.BootBroadcastReceiver"> 
    <intent-filter> 
    <action android:name="android.intent.action.BOOT_COMPLETED" /> 
    <category android:name="android.intent.category.HOME" />
    </intent-filter>
</receiver>