Updating textview data dynamically Android Java

Question

I implemented the code to check wifi state connected or not. I made a text view

TextView WifiTv = (TextView) findViewById(R.id.wifistate);

    ConnectivityManager connectionManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo wifiCheck = connectionManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);


    if (wifiCheck.isConnected()) {
        // Do whatever here
        WifiTv.setText("WiFi is Connected");
        WifiTv.notify();
    } else {
        WifiTv.setText("WiFi is not Connected");
    }

It works but it does not update dynamically and therefore if I turn off wifi I have to refresh the activity for the textview to change (not data binded). How can I make the textview update without refresh please? Thx

EDIT: I have this code in a seperate class which works well with a toast. All I want to do is display in textview instead. How can I connect the textview variable to this class which does not have xml please?

public void onReceive(Context context, Intent intent) {

    NetworkInfo info =
            intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
    if (info != null && info.isConnected()) {
        // Do your work.
        // e.g. To check the Network Name or other info:
        WifiManager wifiManager = (WifiManager)
                context.getSystemService(Context.WIFI_SERVICE);
        WifiInfo wifiInfo = wifiManager.getConnectionInfo();
        String ssid = wifiInfo.getSSID();

        Toast.makeText(context, "Connected to: " + ssid,
                Toast.LENGTH_SHORT).show();


    }

When do you call this code snippet? – Ahmar Jan 06 '17 at 18:58 — Ahmar, Jan 06 '17 at 18:58

score 0 · Answer 1 · answered Jan 06 '17 at 19:06

0

You required BroadcastReceiver and wifimanager. BroadcastReceiver which start when app launches to receive the the implicit intent every time. wifimanager to to check the status.

answered Jan 06 '17 at 19:06

Sunil Hamne

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1
4

score 0 · Answer 2 · answered Jan 06 '17 at 21:15

did you try to add a onResume function to check again each time you resume yout activity?

Don't know your app but maybe this,

@Override
    protected void onResume() {
        super.onResume();

        if (wifiCheck.isConnected()) {
        // Do whatever here
            WifiTv.setText("WiFi is Connected");
            WifiTv.notify();
        } else {
            WifiTv.setText("WiFi is not Connected");
        }
    }

If your others variables are not global to Activity, create them again within the onResume

Updating textview data dynamically Android Java

2 Answers2