学步园

/**
 * 判断网络功能是否可用 
 * 需要权限<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE">
 * 
 * @param context
 * @return boolean
 */
public static boolean isNetworkAvailable(Context context) {
	ConnectivityManager connectivityManager = (ConnectivityManager) context
			.getSystemService(Context.CONNECTIVITY_SERVICE);
	NetworkInfo info = connectivityManager.getActiveNetworkInfo();
	return (info != null && info.isConnected());
}

Over！