检测WiFi或移动网络

Question

我需要解决这个问题。请帮我指导一下。

Answer 1

所以实际上你有四种状态(+第五，如果有没有互联网）

当网络可用时，你必须通过监控Wifi和移动网络的状态来检查互联网提供商，你的四种状态是

Wifi改变状态和

累犯实施

检查接收器中的更改，然后检查状态

public class Internet_State extends BroadcastReceiver {
//checked with new state changed when event occurs
public boolean oldInternetState;

@Override
public void onReceive(Context context, Intent intent) {
    ConnectivityManager cm = (ConnectivityManager) context
            .getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
    Bundle b = intent.getExtras();
    // if Internet available
    boolean isConnected = !b
            .getBoolean(ConnectivityManager.EXTRA_NO_CONNECTIVITY);
            // ignore if no state change
    if (oldInternetState == isConnected)
        return;
    // set new oldInternetState
    oldInternetState = isConnected;
    boolean isMobile = activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE;
    boolean isWifi = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI)
            .isAvailable();
 //you can save these states to be monitored in wifi and mobile change change listners

    //No internet is 0 state
    int state = isConnected?1:0;
            if(state)
            state = checkState(context)
    intent.putExtra("state", state);
             // and then send this intent to your required method which will
             // check the state and perform function
}

@Override
public void initialize(Context context) {
    ConnectivityManager cm = (ConnectivityManager) context
            .getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
            //save the current internet state at start of the receiver registration
    oldInternetState = false;
    if (activeNetwork != null)
        oldInternetState = activeNetwork.isConnectedOrConnecting();
}

}

实现两个，移动和wifi状态改变广播累犯，更好地添加一个状态检查方法，如下所示

public int checkState(Context context){
            ConnectivityManager cm = (ConnectivityManager) context
            .getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
        boolean isMobile = activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE;
    boolean isWifi = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI)
            .isAvailable();
    //No internet is 0 state
    int state = isConnected?1:0;
    if(isWifi && isMobile)
        state = 1;
    else if(isWifi && !isMobile)
        state = 2;
    if(isMobile && isWifi)
        state = 3;
    else if(isMobile && !isWifi)
        state = 4;
       return state;
}

 NetworkInfo allNetInfo = cm
            .getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
    oldDataState = allNetInfo.getState();

int state = intent.getExtras().getInt(WifiManager.EXTRA_WIFI_STATE);
    if (state == WifiManager.WIFI_STATE_ENABLED)
        state = 1;
    else if (state == WifiManager.WIFI_STATE_DISABLED)
        state = 0;
    else
        return;
    if (state == oldWifiState)
        return;
    oldWifiState = state;

问题我将WiFi启用2到3次

因为Wifi改变状态，比如TurningOn和TurningOf是由操作系统触发的，你必须取消它们，就像我在上面做的那样

if (state == WifiManager.WIFI_STATE_ENABLED)
        state = 1;
    else if (state == WifiManager.WIFI_STATE_DISABLED)
        state = 0;
    else
        return;

现在只监视启用和禁用。