Android Studio: ActivityNotFoundException: Wi-Fi Settings

Question

I'm trying to open open the wifi setting programmatically in an andoird app. It works on most devices, but on an android tablet it crashes and gives me this error:

android.content.ActivityNotFoundException: Unable to find explicit activity class {com.android.settings/com.android.settings.wifi.WifiSettings}; have you declared this activity in your AndroidManifest.xml?

Here is my code in the main activity:

Button wifisettings = (Button) findViewById(R.id.WiFiSettings);
    wifisettings.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            final Intent intent = new Intent(Intent.ACTION_MAIN, null);
            intent.addCategory(Intent.CATEGORY_LAUNCHER);
            final ComponentName cn = new ComponentName("com.android.settings", "com.android.settings.wifi.WifiSettings");
            intent.setComponent(cn);
            intent.setFlags(intent.FLAG_ACTIVITY_NEW_TASK);
            startActivity(intent);
        }
    });

Jav T · Accepted Answer · 2018-10-14 18:22:36Z

2

If you want to call WiFiSettings from your app use this:

startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS));

Look into this https://developer.android.com/reference/android/provider/Settings for further sttings and how to take the user there

answered Oct 14, 2018 at 18:22

Jav T

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Comments

ʍѳђઽ૯ท · Accepted Answer · 2018-10-14 18:50:39Z

0

Try adding this in your AndroidManifest.xml:

<activity
    android:name="com.android.settings.wifi.WifiSettings"/>

Same issue reported by other users in comments.

Update: If it didn't work, use this line which is simpler to use:

Button wifisettings = (Button) findViewById(R.id.WiFiSettings);
wifisettings.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS));
        }
    });

edited Oct 14, 2018 at 18:50

answered Oct 14, 2018 at 18:21

ʍѳђઽ૯ท

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6 Comments

A P Over a year ago

I entered that in the manifest, but it doesn't resolve "settings.wifi.WifiSettings"

ʍѳђઽ૯ท Over a year ago

If the issue persist, I prefer to use : startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS)); instead of those few lines of codes. (Check the other user answer)

A P Over a year ago

OK, which lines do I keep and which do I need to replace? I've never used that before

A P Over a year ago

Almost got it, however it can't resolve "Settings" in startActivity(new Intent(Settings.ACTION_WIFI_SETTINGS));

ʍѳђઽ૯ท Over a year ago

You'll need to import it. The import will be : import android.provider.Settings; Android Studio will suggest to import it. Do a clean-project from Build if it does not suggest.

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