Android 检查当前是否已经连接上 Internet

这段代码用来在程序中检查当前是否已经联网

[代码] java代码

 
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ConnectivityManager con=(ConnectivityManager)getSystemService(Activity.CONNECTIVITY_SERVICE); 

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boolean wifi=con.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnectedOrConnecting(); 

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boolean internet=con.getNetworkInfo(ConnectivityManager.TYPE_MOBILE).isConnectedOrConnecting();

[代码] AndroidManifest.xml

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