Ionic 2 error build android app

when build android app :

ionic cordova build android

FAILURE: Build failed with an exception.

  • What went wrong:
    Execution failed for task ‘:processDebugResources’.

com.android.ide.common.process.ProcessException: Failed to execute aapt

  • Try:
    Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
    BUILD FAILED
    Total time: 7.868 secs
    Error: cmd: Command failed with exit code 1 Error output:
    ERROR: In FontFamilyFont, unable to find attribute android:fontVariationSettings
    ERROR: In FontFamilyFont, unable to find attribute android:ttcIndex
    FAILURE: Build failed with an exception.
  • What went wrong:
    Execution failed for task ‘:processDebugResources’.

com.android.ide.common.process.ProcessException: Failed to execute aapt

  • Try:
    Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
    [ERROR] An error occurred while running cordova build android (exit code 1).

ionic cordova requirements

Requirements check results for android:

Java JDK: installed 1.8.0
Android SDK: installed true
Android target: not installed
Please install Android target / API level: “android-26”.

Hint: Open the SDK manager by running: "E:\Android\sdk\tools\android.bat"
You will require:

  1. “SDK Platform” for API level android-26
  2. "Android SDK Platform-tools (latest)
  3. “Android SDK Build-tools” (latest)
    Gradle: installed C:\Program Files\Android\Android Studio1\gradle\gradle-4.1\bin\gradle
    Error: Some of requirements check failed

how to solve this problem

Hi, @ahmedmedhat187

I think this issue resolved check below link

Android build broken after gradle dependencies update: Execution failed for task ':processDebugResources'. > com.android.ide.common.process.ProcessException: Failed to execute aapt

thanks