如何在Android中监控网络状态

Question

如何在活动中监视网络状态？ 我正在使用Google聊天应用程序。

我只想在网络状态更改时执行这些行。

if(...){
    GTalkChatDetails.chat(getApplicationContext());
    GTalkChatDetails.adddMsgListener(getApplicationContext());
}

Answer 1

创建一个类来寻找信号变化，

private class SignalStrengthListener extends PhoneStateListener 
    {
        @Override
        public void onSignalStrengthsChanged(android.telephony.SignalStrength signalStrength) 
        {
            // get the signal strength (a value between 0 and 31)
            int strengthAmplitude = signalStrength.getGsmSignalStrength();
            // do something with it
            GTalkChatDetails.chat(getApplicationContext());
                    GTalkChatDetails.adddMsgListener(getApplicationContext());
            super.onSignalStrengthsChanged(signalStrength);
        }
    }