我試圖檢查網絡可用與否。
但在我的模擬器,所以它總是顯示connected
(斷開網絡後也)在android中的網絡連接檢查
有沒有在我的code.I任何錯誤,正與無線網絡連接。
代碼:
public class AndroidConnectivityActivity extends Activity
{
Button checkBtn;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
checkBtn = (Button) findViewById(R.id.button1);
checkBtn.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
if(isInternetOn())
{
Toast.makeText(getBaseContext(), "Connected",
Toast.LENGTH_SHORT).show();
}
else
{
Toast.makeText(getBaseContext(), "Not connected",
Toast.LENGTH_SHORT).show();
}
}});
}
public final boolean isInternetOn()
{
ConnectivityManager connec = (ConnectivityManager) getSystemService
(Context.CONNECTIVITY_SERVICE);
if ((connec.getNetworkInfo(0).getState() == NetworkInfo.State.CONNECTED)
||(connec.getNetworkInfo(0).getState() == NetworkInfo.State.CONNECTING)
||(connec.getNetworkInfo(1).getState() == NetworkInfo.State.CONNECTING)
||(connec.getNetworkInfo(1).getState() == NetworkInfo.State.CONNECTED))
{
return true;
}
else if ((connec.getNetworkInfo(0).getState() == NetworkInfo.State.DISCONNECTED)
|| (connec.getNetworkInfo(1).getState() == NetworkInfo.State.DISCONNECTED))
{
return false;
}
return false;
}
}
您的代碼沒有問題。但是,你是如何切斷互聯網的? –
嘗試在飛行模式下測試您的代碼。 –
只是關閉wifi或lan連接 –