當我執行ionic build android時，出現以下問題。

解決這個問題如下：

• 查詢和替換 com.android.support:support-v4: com.android.support:support-v4:27.1.0 在platform/android目錄裡。

• 將下面程式碼新增到platforms/android/app/build.gradle 和 platforms/android/build.gradle 檔案裡。

  configurations.all {
  resolutionStrategy {
      force 'com.android.support:support-v4:27.1.0'
   
  
  }}

  Edited to answer “Where is this com.android.support:support-v4:+ setting ?” …

The setting will probably(in this case) be in one of your plugin’s .gradle file in the platform/android/ directory, for example in my case it was the starter-barcodescanner plugin so just go through all your plugins .gradle files :