Question

我的项目出现了一些问题，

android.annotation无法解析。

为您提供信息，我已迁移到androidx库。我假设我所有的代码都会自动更改为androidx，但是只有其中一部分更改了。当前版本的Android Studio是3.5。

我做了什么

无效并重新启动
清理并重建
已选择sdk的所有路径

该应用程序已安装在我的设备上，但仍处于停止状态。这是我的详细信息：

build.gradle（项目）


buildscript {
    repositories {
        google()
        jcenter()

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.0'
        //classpath 'com.google.gms:google-services:3.2.0'
        classpath 'com.google.gms:google-services:4.3.2'
        //classpath 'com.google.gms:google-services:4.3.2'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()


    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

build.gradle（模块应用）

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    buildToolsVersion '28.0.3'

    defaultConfig {
        applicationId "com.kartik.barcode"
        minSdkVersion 17
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        multiDexEnabled true
    }
    buildTypes {
        release {

            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    testImplementation 'junit:junit:4.12'
    //implementation 'androidx.appcompat:appcompat:1.0.0'
    implementation 'androidx.appcompat:appcompat:1.0.0'
    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
    implementation 'androidx.legacy:legacy-support-core-utils:1.0.0'
    implementation 'androidx.legacy:legacy-support-core-ui:1.0.0'
    implementation 'androidx.fragment:fragment:1.0.0'
    implementation 'androidx.multidex:multidex:2.0.0'
    implementation 'androidx.cardview:cardview:1.0.0'
    implementation 'androidx.gridlayout:gridlayout:1.0.0'
    implementation 'androidx.recyclerview:recyclerview:1.0.0'
    implementation 'androidx.palette:palette:1.0.0'
    implementation 'androidx.preference:preference:1.0.0'
    implementation 'androidx.core:core:1.0.0'
    implementation 'androidx.media:media:1.0.0'
    implementation 'androidx.vectordrawable:vectordrawable-animated:1.0.0'
    implementation 'androidx.browser:browser:1.0.0'
    implementation 'com.journeyapps:zxing-android-embedded:3.0.2@aar'
    implementation 'com.google.zxing:core:3.2.0'
    implementation 'com.google.firebase:firebase-database:19.1.0'//for firebase
    implementation 'com.google.firebase:firebase-auth:19.0.0'
    implementation 'com.google.firebase:firebase-storage:19.0.1'
    implementation 'com.google.firebase:firebase-messaging:20.0.0'
    implementation 'com.google.firebase:firebase-appindexing:19.0.0'
    implementation 'com.google.firebase:firebase-firestore:21.1.1'
    implementation 'com.google.firebase:firebase-analytics:17.2.0'
    implementation 'com.squareup.picasso:picasso:2.5.2'
    implementation 'com.google.android.gms:play-services-auth:17.0.0'
    implementation 'com.google.android.gms:play-services-ads:18.2.0'
    implementation 'com.google.android.material:material:1.0.0'
    implementation 'androidx.annotation:annotation:1.1.0'
    //annotationProcessor 'androidx.annotation:annotation:1.1.0'
    implementation 'com.android.support:support-annotations:28.0.0'


}

apply plugin: 'com.google.gms.google-services'

发生问题的地方 logcat

当我查看java类时，导入仍然是android，而不是androidx。即使我更改为androidx，也仍然无法解决。 java class

Answer 1

删除此

implementation 'androidx.annotation:annotation:1.1.0'
    implementation 'com.android.support:support-annotations:28.0.0'

并删除一次您的导入并重新导入

喜欢

import android.annotation.SuppressLint;

android.annotation无法导入：无法解析所有注释

1 个答案: