首先在AndroidManifest.xml添加权限
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<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> |
1,判断是否有网络连接
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public boolean isNetworkConnected(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo(); if (mNetworkInfo != null) { return mNetworkInfo.isAvailable(); } } return false; } |
2.判断WIFI网络是否可用
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public boolean isWifiConnected(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mWiFiNetworkInfo = mConnectivityManager .getNetworkInfo(ConnectivityManager.TYPE_WIFI); if (mWiFiNetworkInfo != null) { return mWiFiNetworkInfo.isAvailable(); } } return false; } |
3.判断MOBILE网络是否可用
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public boolean isMobileConnected(Context context) { if (context != null) { ConnectivityManager mConnectivityManager = (ConnectivityManager) context .getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo mMobileNetworkInfo = mConnectivityManager .getNetworkInfo(ConnectivityManager.TYPE_MOBILE); if (mMobileNetworkInfo != null) { return mMobileNetworkInfo.isAvailable(); } } return false; } |
4.判断网络类型
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//返回值 -1：没有网络 1：WIFI网络2：wap网络3：net网络 public static int GetNetype(Context context) { int netType = -1; ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo networkInfo = connMgr.getActiveNetworkInfo(); if(networkInfo==null) { return netType; } int nType = networkInfo.getType(); if(nType==ConnectivityManager.TYPE_MOBILE) { if(networkInfo.getExtraInfo().toLowerCase().equals("cmnet")) { netType = 3; } else { netType = 2; } } else if(nType==ConnectivityManager.TYPE_WIFI) { netType = 1; } return netType; } |
转载请注明：exchen's blog » Android安卓获取网络状态