how to open configure portable Wi-Fi hotspot setting by onclick?

Question

how to open the following directory:settings/wireless and networks/Tethering and portable hotspot/portable Wi-Fi hotspot settings/configure portable Wi-Fi hotspot/ on butto

Answer 1

In case any one lands here like me, on Android 8, I used this to open up the setup Hotspot page itself.

public static final String SETTINGS_PACKAGE = "com.android.settings";
public static final String HOTSPOT_SETTINGS_CLASS = "com.android.settings.Settings$TetherWifiSettingsActivity";

private void launchHotspotSettings(){
    Intent intent = new Intent(Intent.ACTION_MAIN, null);
    ComponentName componentName = new ComponentName(SETTINGS_PACKAGE, HOTSPOT_SETTINGS_CLASS);
    intent.setComponent(componentName);
    intent.addCategory(Intent.CATEGORY_LAUNCHER);
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    startActivity(intent);
}

Works on my device. Let me know if it works on yours. After a bit of research I realized that this class changes per device brand. Eg. For Samsung, use

public static final String HOTSPOT_SETTINGS_CLASS = "com.android.settings.Settings$WifiApSettingsActivity";

By the way @Drew answer still works on Android 8.