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Nougat

IMPORTANT: future support by ANDROID OS (9,10+) can be disabled - you are buying this app for your current tested version of Android OS

https://developer.android.com/reference/android/net/wifi/WifiManager.html#startScan()
"This method was deprecated in API level 28. The ability for apps to trigger scan requests will be removed in a future release. "

Android PIE 9 - 4 scans per 2 minutes probably
Android Q 10 - probably without any wifi scan support

Wifi Heat Map let you create heat map of wifi signal quality in your flat, house, apartment or shop. Just draw your flat on the paper or use existing plans, take a picture by device camera. After that just walk in desired space and click on display on your exact location. Signal quality of your wifi will be placed on that map.

!!! Important NOTE:
As announced on Google's blog ( https://android-developers.googleblog.com/2017/12/improving-app-security-and-performance.html ) all apps which will be updated on Google Play will have to switch to current Android SDK (software development kit). Apps with older SDK with no run-time permission model will not be able to publish updates.

Because of this all apps (this also) will eventually require LOCATION permission as noted here:
official website android.com: http://developer.android.com/about/versions/marshmallow/android-6.0-changes.html#behavior-hardware-id

"To access the hardware identifiers of nearby external devices via Bluetooth and Wi-Fi scans, your app must now have the ACCESS_FINE_LOCATION or ACCESS_COARSE_LOCATION permissions:"
PENTING: sokongan masa depan oleh ANDROID OS (9,10+) boleh dilumpuhkan - anda membeli aplikasi ini untuk versi Android OS yang diuji semasa anda.

https://developer.android.com/reference/android/net/wifi/WifiManager.html#startScan ()
"Kaedah ini telah ditamatkan di tahap API 28. Keupayaan untuk aplikasi untuk mencetuskan permintaan imbasan akan dikeluarkan dalam pembebasan masa depan."

Android PIE 9 - 4 mengimbas setiap 2 minit mungkin
Android Q 10 - mungkin tanpa sebarang sokongan imbasan wifi

Wifi Heat Map membolehkan anda membuat peta panas kualiti isyarat wifi di flat, rumah, pangsapuri atau kedai anda. Hanya lukiskan rata di atas kertas atau gunakan rancangan sedia ada, ambil gambar dengan kamera peranti. Selepas itu berjalan kaki di ruang yang dikehendaki dan klik pada paparan di lokasi yang tepat. Kualiti isyarat wifi anda akan diletakkan pada peta tersebut.

!!! Nota PENTING:
Seperti yang diumumkan di blog Google (https://android-developers.googleblog.com/2017/12/improving-app-security-and-performance.html) semua aplikasi yang akan dikemas kini di Google Play perlu beralih ke Android semasa SDK (kit pembangunan perisian). Apl dengan SDK lama tanpa model kebenaran jangka masa tidak akan dapat menerbitkan kemas kini.

Kerana semua aplikasi ini (ini juga) akan memerlukan kebenaran LOCATION seperti yang dinyatakan di sini:
laman web rasmi android.com: http://developer.android.com/about/versions/marshmallow/android-6.0-changes.html#behavior-hardware-id

"Untuk mengakses pengecam perkakasan peranti luaran berdekatan melalui imbasan Bluetooth dan Wi-Fi, aplikasi anda kini harus mempunyai kebenaran ACCESS_FINE_LOCATION atau ACCESS_COARSE_LOCATION:"


App membolehkan anda membuat haba peta kualiti isyarat wifi di flat, rumah atau kedai.

Wifi Heat Map - Survey

Versi Terkini Wifi Heat Map - Survey

Versi lain