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java - Android Studio 上的小问题：Cannot resolve android.support.constraint.ConstraintLayout

问题描述

我遇到以下问题：无法解决 android.support.constraint.ConstraintLayout

我添加了对 androidx.constraintlayout:constraintlayout 的依赖

您可以检查是否已添加所有文件以确保解决此问题。问题是，问题依然存在。

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首先 gradle.build：

buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:4.1.3"
        classpath 'com.google.gms:google-services:3.0.0'
        classpath "com.android.support.constraint:constraint-layout:1.0.2"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }

第二个gradle.build：

```dependencies {
    implementation "androidx.constraintlayout:constraintlayout:2.0.4"
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
    implementation 'com.google.firebase:firebase-auth:21.0.1'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    //firebase auth
    implementation 'com.google.firebase:firebase-core:16.0.5'
    //firebase database
    implementation 'com.google.firebase:firebase-database:16.0.4'
    implementation "androidx.constraintlayout:constraintlayout:2.0.4"
    // To use constraintlayout in compose
    implementation "androidx.constraintlayout:constraintlayout-compose:1.0.0-alpha07"
}
apply plugin: 'com.google.gms.google-services'```

标签： javaandroidxmlandroid-studio

解决方案

从您的 build.gradle(module: ...) 中删除第 25 行并添加以下行：

implementation 'androidx.constraintlayout:constraintlayout:2.0.4'

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