A problem occurred evaluating project ':CordovaLib'. No installed build tools found. Install the Android build tools version 19.1.0 or higher

I have a problem when building my ionic app, do not find build tools but in sdk manager I have installed several versions of this, someone knows how I can fix it?

already try to do it with different points proposed as a solution but it does not work–

A problem occurred evaluating project ‘:CordovaLib’.

No installed build tools found. Install the Android build tools version 19.1.0 or higher

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cli packages: (/usr/local/lib/node_modules)

@ionic/cli-utils  : 1.19.2
ionic (Ionic CLI) : 3.20.0

global packages:

cordova (Cordova CLI) : 8.0.0

local packages:

@ionic/app-scripts : 3.1.8
Cordova Platforms  : android 7.0.0
Ionic Framework    : ionic-angular 3.9.2

System:

Node  : v8.15.0
npm   : 6.4.1
OS    : macOS
Xcode : Xcode 10.2.1 Build version 10E1001

Environment Variables:
ANDROID_HOME : not set

Misc:

backend : pro

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cordova requirements
Android Studio project detected

Requirements check results for android:
Java JDK: installed 1.8.0
Android SDK: installed true
Android target: not installed
android: Command failed with exit code ENOENT
Gradle: installed /usr/local/Cellar/gradle/5.4.1/bin/gradle
(node:1022) UnhandledPromiseRejectionWarning: CordovaError: Some of requirements check failed