failed to resolve: com.android.support.support:appcompat-v7:29.+

failed to resolve: com.android.support.support:appcompat-v7:29.+

报错:failed to resolve: com.android.support.support:appcompat-v7:29.+

这个一般就是SDK版本太高了,file—>settings—>updates查看你的SDK版本,failed to resolve: com.android.support.support:appcompat-v7:29.+_第1张图片
我的是26的,然后去Android SDK----->SDK tools下载相对应的版本failed to resolve: com.android.support.support:appcompat-v7:29.+_第2张图片
然后点击保存,它自己会去下载,
下一步,file—>project Structure
failed to resolve: com.android.support.support:appcompat-v7:29.+_第3张图片
failed to resolve: com.android.support.support:appcompat-v7:29.+_第4张图片

failed to resolve: com.android.support.support:appcompat-v7:29.+_第5张图片

failed to resolve: com.android.support.support:appcompat-v7:29.+_第6张图片
failed to resolve: com.android.support.support:appcompat-v7:29.+_第7张图片
最后将其他的版本一定要注释掉,或者删除
如果,启动有报错请参考https://blog.csdn.net/qq_36771588/article/details/83176702这位操作大神

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