android : 네트워크 상태 보기

안드로이드에서 네트워크를 이용하는 어플인 경우, 현재 네트워크 상태를 다음과 같이 체크 할 수 있다.

ConnectivityManager cmgr = (ConnectivityManager)this.getSystemService(Context.CONNECTIVITY_SERVICE); NetworkInfo netInfo = cmgr.getNetworkInfo(ConnectivityManager.TYPE_WIFI); //NetworkInfo netInfo = cmgr.getNetworkInfo(ConnectivityManager.TYPE_MOBILE); //NetworkInfo netInfo = cmgr.getActiveNetworkInfo(); if (netInfo != null) { if (netInfo.isAvailable()) { // ... } if (netInfo.isConnected()) { // ... } }


* 다음은 안드로이드 레퍼런스 사이트에서 일부 발췌.

public boolean isAvailable ()

Since: API Level 1

Indicates whether network connectivity is possible. A network is unavailable when a persistent or semi-persistent condition prevents the possibility of connecting to that network. Examples include

• The device is out of the coverage area for any network of this type.
• The device is on a network other than the home network (i.e., roaming), and data roaming has been disabled.
• The device's radio is turned off, e.g., because airplane mode is enabled.

Returns

• true if the network is available, false otherwise

public boolean isConnected ()

Since: API Level 1

Indicates whether network connectivity exists and it is possible to establish connections and pass data.

Returns

• true if network connectivity exists, false otherwise.

* Manifest 에서 ACCESS_NETWORK_STATE 권한을 설정해야 함.