About BLE scanner project

Issue : app runs but doesn’t detect any BLE devices

Solution : from https://www.youtube.com/watch?v=jqOQmtTBAio comments (ranjithkumar pv question)

• add the following lines in AndroidManifest.xml :

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

• Configure the Android device to allow location on the app : Parameters > Applications > Applications Authorizations > Location > Enable it for the app “BLE Tutorial”

Issue : Android Studio build error

https://stackoverflow.com/questions/52790020/build-errors-after-android-studio-3-2-1-upgrade

Error like :

Could not find com.android.tools.build:aapt2:3.2.1-4818971**. Searched in the following locations:
    file:/C:/Users/sandeepk2/AppData/Local/Android/Sdk/extras/m2repository/com/android/tools/build/aapt2/3.2.1-4818971/aapt2-3.2.1-4818971.pom
    file:/C:/Users/sandeepk2/AppData/Local/Android/Sdk/extras/m2repository/com/android/tools/build/aapt2/3.2.1-4818971/aapt2-3.2.1-4818971-windows.jar
    file:/C:/Users/sandeepk2/AppData/Local/Android/Sdk/extras/google/m2repository/com/android/tools/build/aapt2/3.2.1-4818971/aapt2-3.2.1-4818971.pom
    file:/C:/Users/sandeepk2/AppData/Local/Android/Sdk/extras/google/m2repository/com/android/tools/build/aapt2/3.2.1-4818971/aapt2-3.2.1-4818971-windows.jar
    file:/C:/Users/sandeepk2/AppData/Local/Android/Sdk/extras/android/m2repository/com/android/tools/build/aapt2/3.2.1-4818971/aapt2-3.2.1-4818971.pom
    file:/C:/Users/sandeepk2/AppData/Local/Android/Sdk/extras/android/m2repository/com/android/tools/build/aapt2/3.2.1-4818971/aapt2-3.2.1-4818971-windows.jar
    https://jcenter.bintray.com/com/android/tools/build/aapt2/3.2.1-4818971/aapt2-3.2.1-4818971.pom
    https://jcenter.bintray.com/com/android/tools/build/aapt2/3.2.1-4818971/aapt2-3.2.1-4818971-windows.jar Required by:
    project :app

Solution : “Just add google() in root level in build.gradle”

buildscript {
    repositories {
        google() //  <--here
        jcenter()
    }
 }

allprojects {
    repositories {
        google() //  <-- here
        jcenter()
    }
}