Java Android build.gradle文件中出错：找不到com.Android。支持：appcompat-v7:29.0.0

我得到以下生成错误。你能帮我修一下吗

 Could not find com.android.support:appcompat-v7:29.0.0.
     Required by:
         project :app
   > Could not find com.android.support:support-core-utils:29.0.0.
     Required by:
         project :app
   > Could not find com.android.support:design:29.*.
     Required by:
         project :app

---

没有

com.android.support的版本29。它们的最新版本（也已过时）是
28.0.0
。您应该。
请共享build.gradle文件（应用程序模块）的内容。