Android Studio-TextView未在设计视图布局中显示 [英] Android Studio - TextView not showing in design view layout

问题描述

我是全新尝试Android应用程序的人.我开始关注在线教程( https://developer.android.com/培训/基础知识/firstapp/building-ui )，但添加新的TextView有点沮丧，根据本教程，它应该在设计视图中显示，让我来回移动.但是，在设计视图中它对我是不可见的，而我只能通过运行仿真才能看到它.如果有人做错了事，请让我知道吗?还是本教程没有告诉您的内容?还是只是一个错误?

I am brand new to trying out an android app. I started to follow the online tutorial (https://developer.android.com/training/basics/firstapp/building-ui), but getting a bit frustrated at adding a new TextView, as according to the tutorial, it should show in design view, and let me move it around. It is invisible to me in design view though, and I can only see it by running an emulation. Please can someone let me know if I am doing something wrong? or something the tutorial does not tell you? or is this just a bug?

在此先感谢您提供的任何建议.

Thank you in advance for any advice you can offer.

推荐答案

最新的sdk 28中有一个错误，

There is a bug in latest sdk 28 ,

更改compileSdkVersion 27

targetSdkVersion 27

和

implementation 'com.android.support:appcompat-v7:27.1.1'

更新:

据说可以解决问题，但我尚未对其进行测试

This is said to fix problem but I did not test it yet

在styles.xml中，将应用程序的父主题更改为Base.Theme.AppCompat而不是Theme.AppCompat

In styles.xml change the parent theme for your app to Base.Theme.AppCompat instead of Theme.AppCompat

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