Ionic4 构建 android

Question

I would like build my ionic app for android but i have an error.

Checking Java JDK and Android SDK versions
ANDROID_SDK_ROOT=undefined (recommended setting)
ANDROID_HOME=C:\Users\masmas\AppData\Local\Android\sdk (DEPRECATED)
Could not find an installed version of Gradle either in Android Studio,
or on your system to install the gradle wrapper. Please include gradle
in your path, or install Android Studio
[ERROR] An error occurred while running subprocess cordova.

        cordova.cmd build android --release exited with exit code 1.

        Re-running this command with the --verbose flag may provide more information.

Answer 1

您必须手动安装 Gradle，因为最新版本的 android studio 不支持从外部来源构建 gradle。要安装 gradle：- https://gradle.org/install/ 。