运行时异常：无法在真实手机中启动活动，但模拟器工作正常答案

【问题标题】：Runtime exception: Unable to start activity in real phone but emulator works fine运行时异常：无法在真实手机中启动活动，但模拟器工作正常
【发布时间】：2020-02-08 02:22:13
【问题描述】：

我的应用在安卓模拟器上运行良好。
但是，当我将它编译成 apk 时。它崩溃并出现以下错误。

java.lang.RuntimeException: Unable to start activity ComponentInfo{tk.myessentialoils.a16personalities/tk.myessentialoils.a16personalities.TitleActivity}: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class androidx.constraintlayout.widget.ConstraintLayout
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2843)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2921)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1639)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:6662)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873)
Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: 
Error inflating class androidx.constraintlayout.widget.ConstraintLayout
Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class 
androidx.constraintlayout.widget.ConstraintLayout
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance0(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:334)
at android.view.LayoutInflater.createView(LayoutInflater.java:651)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:794)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:734)
at android.view.LayoutInflater.inflate(LayoutInflater.java:496)
at android.view.LayoutInflater.inflate(LayoutInflater.java:427)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469)
at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
at tk.myessentialoils.a16personalities.TitleActivity.onCreate(TitleActivity.java:23)
at android.app.Activity.performCreate(Activity.java:7074)
at android.app.Activity.performCreate(Activity.java:7065)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2796)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2921)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1639)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:6662)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:547)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:873)
Caused by: java.lang.NoClassDefFoundError: Failed resolution of: 
Landroidx/constraintlayout/widget/R$styleable;
at androidx.constraintlayout.widget.ConstraintLayout.init(ConstraintLayout.java:590)
at androidx.constraintlayout.widget.ConstraintLayout.<init>(ConstraintLayout.java:567)
... 24 more
Caused by: java.lang.ClassNotFoundException: Didn't find class 
"androidx.constraintlayout.widget.R$styleable" on path: DexPathList[[zip file 
"/data/app/tk.myessentialoils.a16personalities-McRu5v88h3OOg6KJL_I- 
jg==/base.apk"],nativeLibraryDirectories=[/data/app/tk.myessentialoils.a16personalities- 
McRu5v88h3OOg6KJL_I-jg==/lib/arm, /system/lib, /vendor/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:125)
at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
... 26 more

所以，我的问题是
1. 模拟器安装和apk安装有什么区别
2. 我该如何解决这个错误

这是我的构建，我使用 android studio build>generate signed bundle/apk 生成

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "tk.myessentialoils.a16personalities"
        minSdkVersion 19
        targetSdkVersion 28
        versionCode 2
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.appcompat:appcompat:1.0.0-beta01'
    implementation 'com.google.android.material:material:1.0.0-beta01'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.1.0-alpha4'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0-alpha4'
    implementation 'com.google.android.gms:play-services-ads:18.2.0'
}

【问题讨论】：

试试这个stackoverflow.com/a/57038018/9024123
发布你的 build.gradle
“模拟器安装和apk安装的区别”是指它无法在真实设备上运行还是你制作的APK和之前运行的同一个模拟器，现在无法工作？如果是这样，您是如何生成此 APK 的？您使用的命令是什么？你在使用 Proguard 吗？缩小？您需要在这里回答许多问题。您遇到的问题是 您以某种方式“生成”的 apk 在其类路径中没有正确的类，很可能它们被某个进程剥离了。
@MartinMarconcini 我的意思是，这段代码适用于 android studio 模拟器。但是相同的代码在真实手机上因上述错误而失败。（打开时崩溃）
您是如何生成 APK 的？另外，发布您的相关 gradle 文件，您有什么依赖项？目标API？最小API？等

标签： android

【解决方案1】：

为了方便以后遇到这种情况的人。

迁移到 androidx 后膨胀约束布局时出错
有一个错误。

https://stackoverflow.com/a/52882787/9190861

我不知道为什么，但 1.1.2 简直窒息而死。大概有些好人谷歌错过的兼容性程序。他们倾向于经常这样做；欢迎来到安卓编程！ ——斯科特·比格斯

在 build gradle 的实现中将 1.1.2 更改为 1.1.3 后，我的项目运行良好。

implementation 'androidx.constraintlayout:constraintlayout:1.1.2'

【讨论】：