Gradle 同步失败找不到约束布局:1.0.0-alpha2 [英] Gradle Sync failed could not find constraint-layout:1.0.0-alpha2
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问题描述
问题:
Error:Could not find com.android.support.constraint:constraint-layout:1.0.0-alpha2.
Required by:
myapp:app:unspecified
背景:Android Studio 2.2 P 1
Background : Android Studio 2.2 P 1
推荐答案
无法安装/更新 ConstraintLayout
的支持库.
Support libraries for ConstraintLayout
could not be installed/updated.
只需打开 Preferences
> Appearance &Behavior
> System Settings
> Android
并移动到SDK Tools
选项卡.检查以下字段并安装.
Just open Preferences
> Appearance & Behavior
> System Settings
> Android
and move to SDK Tools
tab. Check the following fields and install.
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