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android中判断网络连接是否可用
一、判断网络连接是否可用
- public static boolean isNetworkAvailable(Context context) {
- ConnectivityManager cm = (ConnectivityManager) context
- .getSystemService(Context.CONNECTIVITY_SERVICE);
- if (cm == null) {
- } else {
- //如果仅仅是用来判断网络连接
- //则可以使用 cm.getActiveNetworkInfo().isAvailable();
- NetworkInfo[] info = cm.getAllNetworkInfo();
- if (info != null) {
- for (int i = 0; i < info.length; i++) {
- if (info[i].getState() == NetworkInfo.State.CONNECTED) {
- return true;
- }
- }
- }
- }
- return false;
- }
二、判断GPS是否打开
- public static boolean isGpsEnabled(Context context) {
- LocationManager lm = ((LocationManager) context
- .getSystemService(Context.LOCATION_SERVICE));
- List accessibleProviders = lm.getProviders(true);
- return accessibleProviders != null && accessibleProviders.size() > 0;
- }
三、判断WIFI是否打开
- public static boolean isWifiEnabled(Context context) {
- ConnectivityManager mgrConn = (ConnectivityManager) context
- .getSystemService(Context.CONNECTIVITY_SERVICE);
- TelephonyManager mgrTel = (TelephonyManager) context
- .getSystemService(Context.TELEPHONY_SERVICE);
- return ((mgrConn.getActiveNetworkInfo() != null && mgrConn
- .getActiveNetworkInfo().getState() == NetworkInfo.State.CONNECTED) || mgrTel
- .getNetworkType() == TelephonyManager.NETWORK_TYPE_UMTS);
- }
四、判断是否是3G网络
- public static boolean is3rd(Context context) {
- ConnectivityManager cm = (ConnectivityManager) context
- .getSystemService(Context.CONNECTIVITY_SERVICE);
- NetworkInfo networkINfo = cm.getActiveNetworkInfo();
- if (networkINfo != null
- && networkINfo.getType() == ConnectivityManager.TYPE_MOBILE) {
- return true;
- }
- return false;
- }
五、判断是wifi还是3g网络,用户的体现性在这里了,wifi就可以建议下载或者在线播放。
- public static boolean isWifi(Context context) {
- ConnectivityManager cm = (ConnectivityManager) context
- .getSystemService(Context.CONNECTIVITY_SERVICE);
- NetworkInfo networkINfo = cm.getActiveNetworkInfo();
- if (networkINfo != null
- && networkINfo.getType() == ConnectivityManager.TYPE_WIFI) {
- return true;
- }
- return false;
- }
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