Question

该应用程序当前具有 Cardview、recyclerview 及其适配器。 cardView 有三个图像（一个是 URL 图像，两个是矢量可绘制对象）和两个文本。每次启动应用程序时，我都会遇到崩溃。由于这是我第一次制作需要 Internet 连接的 android 应用程序，我怀疑问题出在依赖项/gradle/manifest.xml 等周围。输出如下：

2021-06-17 03:09:45.376 8822-8822/? I/udio_downloade: Not late-enabling -Xcheck:jni (already on)
2021-06-17 03:09:45.415 8822-8822/? E/udio_downloade: Unknown bits set in runtime_flags: 0x8000
2021-06-17 03:09:45.416 8822-8822/? W/udio_downloade: Unexpected CPU variant for X86 using defaults: x86
2021-06-17 03:09:45.621 8822-8822/com.example.audio_downloader W/RenderThread: type=1400 audit(0.0:564): avc: denied { write } for name="property_service" dev="tmpfs" ino=8412 scontext=u:r:untrusted_app:s0:c146,c256,c512,c768 tcontext=u:object_r:property_socket:s0 tclass=sock_file permissive=0 app=com.example.audio_downloader
2021-06-17 03:09:45.635 8822-8855/com.example.audio_downloader D/libEGL: Emulator has host GPU support, qemu.gles is set to 1.
2021-06-17 03:09:45.636 8822-8855/com.example.audio_downloader W/libc: Unable to set property "qemu.gles" to "1": connection failed; errno=13 (Permission denied)
2021-06-17 03:09:45.642 8822-8855/com.example.audio_downloader D/libEGL: loaded /vendor/lib/egl/libEGL_emulation.so
2021-06-17 03:09:45.643 8822-8855/com.example.audio_downloader D/libEGL: loaded /vendor/lib/egl/libGLESv1_CM_emulation.so
2021-06-17 03:09:45.645 8822-8855/com.example.audio_downloader D/libEGL: loaded /vendor/lib/egl/libGLESv2_emulation.so
2021-06-17 03:09:45.747 8822-8822/com.example.audio_downloader W/udio_downloade: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (greylist, reflection, allowed)
2021-06-17 03:09:45.747 8822-8822/com.example.audio_downloader W/udio_downloade: Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (greylist, reflection, allowed)
2021-06-17 03:09:45.756 8822-8822/com.example.audio_downloader D/AndroidRuntime: Shutting down VM
2021-06-17 03:09:45.758 8822-8822/com.example.audio_downloader E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.audio_downloader, PID: 8822
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.audio_downloader/com.example.audio_downloader.MainActivity}: android.view.InflateException: Binary XML file line #2 in com.example.audio_downloader:layout/activity_main: Binary XML file line #2 in com.example.audio_downloader:layout/activity_main: Error inflating class layout
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3270)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:214)
        at android.app.ActivityThread.main(ActivityThread.java:7356)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
     Caused by: android.view.InflateException: Binary XML file line #2 in com.example.audio_downloader:layout/activity_main: Binary XML file line #2 in com.example.audio_downloader:layout/activity_main: Error inflating class layout
     Caused by: android.view.InflateException: Binary XML file line #2 in com.example.audio_downloader:layout/activity_main: Error inflating class layout
     Caused by: java.lang.ClassNotFoundException: android.view.layout
        at java.lang.Class.classForName(Native Method)
        at java.lang.Class.forName(Class.java:454)
        at android.view.LayoutInflater.createView(LayoutInflater.java:815)
        at android.view.LayoutInflater.createView(LayoutInflater.java:776)
        at android.view.LayoutInflater.onCreateView(LayoutInflater.java:913)
        at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:68)
        at android.view.LayoutInflater.onCreateView(LayoutInflater.java:930)
        at android.view.LayoutInflater.onCreateView(LayoutInflater.java:950)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:1004)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:961)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:659)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:534)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:481)
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:699)
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:195)
        at com.example.audio_downloader.MainActivity.onCreate(MainActivity.kt:19)
        at android.app.Activity.performCreate(Activity.java:7802)
        at android.app.Activity.performCreate(Activity.java:7791)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1299)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3245)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
        at android.os.Handler.dispatchMessage(Handler.java:107)
        at android.os.Looper.loop(Looper.java:214)
        at android.app.ActivityThread.main(ActivityThread.java:7356)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
2021-06-17 03:09:45.758 8822-8822/com.example.audio_downloader E/AndroidRuntime: Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.layout" on path: DexPathList[[zip file "/data/app/com.example.audio_downloader-c8ZlMIqksHRCoit9GGx70g==/base.apk"],nativeLibraryDirectories=[/data/app/com.example.audio_downloader-c8ZlMIqksHRCoit9GGx70g==/lib/x86, /system/lib, /system/product/lib]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:196)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
            ... 31 more

Android Studio 的代码分析表明代码中没有错误或警告。

依赖和插件如下：

    implementation 'androidx.core:core-ktx:1.5.0'
    implementation 'androidx.appcompat:appcompat:1.3.0'
    implementation 'com.google.android.material:material:1.3.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'

    implementation "androidx.recyclerview:recyclerview:1.2.1"
    implementation "androidx.cardview:cardview:1.0.0"
    implementation 'com.squareup.picasso:picasso:2.71828'
    implementation 'com.google.code.gson:gson:2.8.6'

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'

当我使用 Picasso 和 URL 映像时，我还向 AndroidManifest.xml 添加了 <uses-permission android:name="android.permission.INTERNET" />

我尝试过使用 logcat，但似乎该应用程序甚至没有进入 OnCreate() 阶段。

XML 文件：

<?xml version="1.0" encoding="utf-8"?>
<layout 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">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".MainActivity">

        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/recycler_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:clipToPadding="false"
            android:padding="4dp"
            tools:listitem="@layout/item_holder" />
    </androidx.constraintlayout.widget.ConstraintLayout>
</layout>

我尝试启用数据绑定和视图绑定。 kotlin-kapt 插件也试过了。我试过使用 viewBinding 而不是 kotlinx.synthetic。

Answer 1

可以通过添加以下内容来帮助您： android { //... dataBinding { enabled = true } }

你的问题听起来像这样question

Answer 2

对于所有花费时间试图解决我的问题的人，我深表歉意。这是因为我的适配器代码中有一个 TODO。（我来自 python，在代码中间放置 TODO 不会造成任何问题，因为它是作为注释编写的，我认为它是相同的......）TODO 函数正在干扰其余进程。

Answer 3

请检查是否与此帖子重复？基于您的错误堆栈跟踪似乎非常相似。

Android binary layout inflate exception : ClassNotFoundException: Didn't find class "android.view.layout" on path:

启动时应用程序崩溃

3 个答案: