@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setmanager = new SettingManager(getApplicationContext());
mCenter = CmdCenter.getInstance(getApplicationContext());
// 每次返回activity都要注册一次sdk监听器，保证sdk状态能正确回调
mCenter.getXPGWifiSDK().setListener(sdkListener);
// 把activity推入历史栈，退出app后清除历史栈，避免造成内存溢出
// Historys.put(this);
}
public void onResume() {
super.onResume();
// 每次返回activity都要注册一次sdk监听器，保证sdk状态能正确回调
mCenter.getXPGWifiSDK().setListener(sdkListener);
}