[General Questions and Answers] GalaxyA325G:
By way of update, I haven't been standing still in TRYING to resolve the unanswered question of how to

MANUALLY

create a shortcut to an Activity if all you know is the unique package name and activity name.

Note: We can already automatically create a shortcut by searching a listing based on knowing the unique package and activity name as explained here; and we can already find the unique package and activity name as explained here and here; but the goal now is to manually create the shortcut knowing only that unique package and activity name.

One of the problems with

manually

creating a shortcut to any given Activity (just by knowing the name of the package and activity) is the syntax required is not intuitive.

To help with the syntax, here's a quick tutorial I wrote to help people get up to speed on the syntax.

Please try it out and add more examples so we can all benefit from each others' efforts.

Tutorial: Opening Android intents & activities

(working syntax & beginner examples)

All were successfully tested on my Android 11 Samsung A32 5G.

1. Install "Intents" freeware, by Krow

Start "Intents" & press the (+) & enter the fields specified below.

Press the airplane arrow icon to open up the specified Activity above.

(Keep in mind you can long press in History to save as a Favorite and then copy & paste for future steps.)

a. Action = ACTION.MAIN (android.intent.action.MAIN)

Package Name = com.google.android.gms

Class Name = co.g.Space

Category = CATEGORY.LAUNCHER (android.intent.category.LAUNCHER)

b. Action = ACTION.MAIN (android.intent.action.MAIN)

Package Name = com.google.android.gms

Class Name = com.google.android.gms.ads.settings.AdsSettingsActivity

Category = CATEGORY.LAUNCHER (android.intent.category.LAUNCHER)

c. Action = ACTION.MAIN (android.intent.action.MAIN)

Package Name = com.google.android.gms

Class Name = com.google.android.gms.nearby.exposurenotification.settings.SettingsActivity

Category = CATEGORY.LAUNCHER (android.intent.category.LAUNCHER)

d. Action = ACTION.MAIN (android.intent.action.MAIN)

Package Name = com.android.settings

Class Name = com.android.settings.Settings$WifiCallingSettingsActivity

Category = CATEGORY.LAUNCHER (android.intent.category.LAUNCHER)

e. Action = ACTION.MAIN (android.intent.action.MAIN)

Package Name = com.android.settings

Class Name = com.android.settings.Settings$WifiCallingSettingsActivity

Category = CATEGORY.LAUNCHER (android.intent.category.LAUNCHER)

f. Action = ACTION.MAIN (android.intent.action.MAIN)

Package Name = com.android.settings

Class Name = com.android.settings.wifi.calling.WifiCallingSuggestionActivity

Category = CATEGORY.LAUNCHER (android.intent.category.LAUNCHER)

g. Action = ACTION.MAIN (android.intent.action.MAIN)

Package Name = com.android.settings

Class Name = com.android.settings.notification.history.NotificationHistoryActivity

Category = CATEGORY.LAUNCHER (android.intent.category.LAUNCHER)

h. Action = ACTION.MAIN (android.intent.action.MAIN)

Package Name = com.android.settings

Class Name = com.android.settings.wifi.WifiStatusTest

Category = CATEGORY.LAUNCHER (android.intent.category.LAUNCHER)

i. Action = ACTION.MAIN (android.intent.action.MAIN)

Package Name = com.android.settings

Class Name = com.android.settings.Settings$SecVolumeSettingsActivity

Category = CATEGORY.LAUNCHER (android.intent.category.LAUNCHER)

j. Action = ACTION.MAIN (android.intent.action.MAIN)

Package Name = com.android.settings

Class Name = com.android.settings.Settings$WifiControlHistoryActivity

Category = CATEGORY.LAUNCHER (android.intent.category.LAUNCHER)

k. Action = ACTION.MAIN (android.intent.action.MAIN)

Package Name = com.google.android.gms

Class Name = com.google.android.gms.location.settings.LocationAccuracyActivity

Category = CATEGORY.LAUNCHER (android.intent.category.LAUNCHER)

l. Action = ACTION.MAIN (android.intent.action.MAIN)

Package Name = com.android.settings

Class Name = com.android.settings.accessibility.AccessibilitySettingsForSetupWizardActivity

Category = CATEGORY.LAUNCHER (android.intent.category.LAUNCHER)

m. Action = ACTION.MAIN (android.intent.action.MAIN)

Package Name = com.android.settings

Class Name = com.android.settings/com.android.settings.Settings$AppMemoryUsageActivity

Category = CATEGORY.LAUNCHER (android.intent.category.LAUNCHER)

2. Copy any of those syntactically correct URI examples above to your clipboard.

a. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.google.android.gms;component=com.google.android.gms/co.g.Space;end

b. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.google.android.gms;component=com.google.android.gms/.ads.settings.AdsSettingsActivity;end

b. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.google.android.gms;component=com.google.android.gms/com.google.android.gms.ads.settings.AdsSettingsActivity;end

c. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.google.android.gms;component=com.google.android.gms/.nearby.exposurenotification.settings.SettingsActivity;end

c. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.google.android.gms;component=com.google.android.gms/com.google.android.gms.nearby.exposurenotification.settings.SettingsActivity;end

d. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.android.settings;component=com.android.settings/.Settings$WifiCallingSettingsActivity;end

d. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.android.settings;component=com.android.settings/com.android.settings.Settings$WifiCallingSettingsActivity;end

e. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.android.settings;component=com.android.settings/.Settings%24WifiCallingSettingsActivity;end

f. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.android.settings;component=com.android.settings/.wifi.calling.WifiCallingSuggestionActivity;end

g. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.android.settings;component=com.android.settings/.notification.history.NotificationHistoryActivity;end

g. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.android.settings;component=com.android.settings/com.android.settings.notification.history.NotificationHistoryActivity;end

h. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.android.settings;component=com.android.settings/com.android.settings.wifi.WifiStatusTest;end

i. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.android.settings;component=com.android.settings/com.android.settings.Settings$SecVolumeSettingsActivity;end

j. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.android.settings;component=com.android.settings/com.android.settings.Settings$WifiControlHistoryActivity;end

k. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.google.android.gms;component=com.google.android.gms/com.google.android.gms.location.settings.LocationAccuracyActivity;end

l. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.android.settings;component=com.android.settings/com.android.settings.accessibility.AccessibilitySettingsForSetupWizardActivity;end

m. intent:#intent;action=android.intent.action.MAIN;category=android.intent.category.LAUNCHER;package=com.android.settings;component=com.android.settings/com.android.settings.Settings$AppMemoryUsageActivity;end

3. Install "Instant Intent" freeware, by TrianguloY

<https://github.com/TrianguloY/intent>

<https://play.google.com/store/apps/details?id=com.trianguloy.instantintent>

4. Start "Instant Intent" & paste any URI above & press "Open Intent".

Each of those examples above should open up the specified Activity below.

a. Google Play services storage (Settings > Apps > Google Play Services > Storage > Manage Storage)

b. Ads (Settings > Privacy > Ads)

c. Exposure Notifications (Settings > Google > Covid-19 Exposure Notifications)

d. Wi-Fi calling (afaik this is a hidden Activity unavailable to users via a menu)

e. Wi-Fi calling (afaik this is a hidden Activity unavailable to users via a menu)

f. Wi-Fi calling (afaik this is a hidden Activity unavailable to users via a menu)

g. Notification history (Settings > Notifications > Advanced settings > Notification history)

h. WiFi Status (afaik this is a hidden Activity unavailable to users via a menu)

i. Volume (Settings > Sounds and vibration > Volume)

j. Wi-Fi control history (afaik this is a hidden Activity unavailable to users via a menu)

k. Improve Google Location Accuracy (Settings > Location > Google Location Accuracy)

l. Vision Settings (afaik this is a hidden Activity unavailable to users via a menu)

m. Memory usage (afaik this is a hidden Activity unavailable to users via a menu)

Optional:

5. Test by running these commands inside F-Droid Termux on Android.

a. am start -n com.google.android.gms/co.g.Space

b. am start -n com.google.android.gms/.ads.settings.AdsSettingsActivity

c. am start -n com.google.android.gms/.nearby.exposurenotification.settings.SettingsActivity

d. am start -n com.android.settings/.Settings\$WifiCallingSettingsActivity

e. am start -n 'com.android.settings/.Settings$WifiCallingSettingsActivity'

f. am start -n com.android.settings/.wifi.calling.WifiCallingSuggestionActivity

g. am start -n com.android.settings/.notification.history.NotificationHistoryActivity

h. am start -n com.android.settings/com.android.settings.wifi.WifiStatusTest

i. am start -n com.android.settings/com.android.settings.Settings\$SecVolumeSettingsActivity

j. am start -n com.android.settings/com.android.settings.Settings\$WifiControlHistoryActivity

k. am start -n com.google.android.gms/com.google.android.gms.location.settings.LocationAccuracyActivity

l. am start -n com.android.settings/com.android.settings.accessibility.AccessibilitySettingsForSetupWizardActivity

m. am start -n com.android.settings/com.android.settings.Settings\$AppMemoryUsageActivity

6. Test by opening the same Activities using adb on a Windows PC.

a. adb shell am start -n com.google.android.gms/co.g.Space

b. adb shell am start -n com.google.android.gms/.ads.settings.AdsSettingsActivity

c. adb shell am start -n com.google.android.gms/.nearby.exposurenotification.settings.SettingsActivity

d. adb shell am start -n com.android.settings/.Settings\$WifiCallingSettingsActivity

e. adb shell am start -n 'com.android.settings/.Settings$WifiCallingSettingsActivity'

f. adb shell am start -n com.android.settings/.wifi.calling.WifiCallingSuggestionActivity

g. adb shell am start -n com.android.settings/.notification.history.NotificationHistoryActivity

h. adb shell am start -n com.android.settings/com.android.settings.wifi.WifiStatusTest

i. adb shell am start -n com.android.settings/com.android.settings.Settings\$SecVolumeSettingsActivity

j. adb shell am start -n com.android.settings/com.android.settings.Settings\$WifiControlHistoryActivity

k. adb shell am start -n com.google.android.gms/com.google.android.gms.location.settings.LocationAccuracyActivity

l. adb shell am start -n com.android.settings/com.android.settings.accessibility.AccessibilitySettingsForSetupWizardActivity

m. adb shell am start -n com.android.settings/com.android.settings.Settings\$AppMemoryUsageActivity

Please test and report how these examples work on your Android device. Also please add additional examples you may find useful.

Most importantly, if you can find an app that

manually

creates these homescreen shortcuts, (from just the information above, without pulling it from a listing) please let all of us know as soon as you create your first shortcut.

To my knowledge, NOBODY on the Internet knows the answer to this question (but let's hope that isn't true).