网络连接状态判断

1：测试网络连接，true为已连接
private boolean isNetworkAvailable() {
ConnectivityManager connectivityManager
= (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
return activeNetworkInfo != null && activeNetworkInfo.isConnected();
}

2：判断网络连接类型
public boolean isWifi(Context context) {
ConnectivityManager cm = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkINfo = cm.getActiveNetworkInfo();
if (networkINfo == null) {
Log.e("net ", "null");//网络未连接
} else if (networkINfo != null
&& networkINfo.getType() == ConnectivityManager.TYPE_WIFI) {
Log.e("net ", "wifi");//连接WiFi
return true;
}else{

Log.e("net ", "mobile");//移动网络