网络连接状态的监听和判断(android,wifi,Gprs)

</intent-filter>

</receiver>

3).加入权限?<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

?

3.无连接时引导用户跳转到设置页面

startActivity(new Intent(Settings.ACTION_WIRELESS_SETTINGS));

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