判断网络是否连接

/** * 判断网络 */ //创建方法 if (isNet()){ Toast.makeText(getActivity(),“当前有网络”,Toast.LENGTH_LONG).show(); }else { Toast.makeText(getActivity(),“亲,请联网…”,Toast.LENGTH_LONG).show();

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private boolean isNet() { ConnectivityManager connectivityManager = (ConnectivityManager) getActivity().getSystemService(Context.CONNECTIVITY_SERVICE); if (connectivityManager == null){ return false; }else { NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo(); if (activeNetworkInfo == null || !activeNetworkInfo.isAvailable()){ return false; } } return true; }