java - 二进制 xml 文件行 #1 : error inflating class What should I do now?

Question

android:text="Hello World"的预览未显示。我现在应该怎么做才能解决这个问题？

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World"
        android:textColor="red"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout> 

Answer 1

1.st 将您的 activity_main.xml 布局 android.support.constraint.ConstraintLayout 替换为 androidx.constraintlayout.widget.ConstraintLayout

2.nd 进入 app.gradle 并添加依赖项 implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

然后按立即同步