java - NoClassDefFoundError : Failed resolution of: Lcom/parse/ui/R$layout; on pre-Lollipop

Question

我是一名尝试使用 Parse's 开发 Android 应用程序的新开发人员服务。我的应用程序使用了 Github 上可用的 ParseUI它工作正常。

但是，最近在运行应用程序时，我在应用程序启动时遇到了这个错误:

java.lang.NoClassDefFoundError: Failed resolution of: Lcom/parse/ui/R$layout;
        at com.parse.ui.ParseLoginFragment.onCreateView(ParseLoginFragment.java:212)
        at android.support.v4.app.Fragment.performCreateView(Fragment.java:1789)
        at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:955)
        at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1138)
        at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:740)
        at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1501)
        at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:551)
        at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1171)
        at android.app.Activity.performStart(Activity.java:5241)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2157)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
        at android.app.ActivityThread.access$800(ActivityThread.java:135)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:136)
        at android.app.ActivityThread.main(ActivityThread.java:5001)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
 Caused by: java.lang.ClassNotFoundException: Didn't find class "com.parse.ui.R$layout" on path: DexPathList[[zip file "/data/app/com.udrink-1.apk"],nativeLibraryDirectories=[/data/app-lib/com.udrink-1, /system/lib]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
        at com.parse.ui.ParseLoginFragment.onCreateView(ParseLoginFragment.java:212)
        at android.support.v4.app.Fragment.performCreateView(Fragment.java:1789)
        at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:955)
        at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1138)
        at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:740)
        at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1501)
        at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:551)
        at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1171)
        at android.app.Activity.performStart(Activity.java:5241)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2157)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233)
        at android.app.ActivityThread.access$800(ActivityThread.java:135)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:136)
        at android.app.ActivityThread.main(ActivityThread.java:5001)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
Suppressed: java.lang.ClassNotFoundException: com.parse.ui.R$layout
        at java.lang.Class.classForName(Native Method)
        at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
        at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
        ... 20 more
 Caused by: java.lang.NoClassDefFoundError: Class "Lcom/parse/ui/R$layout;" not found
        ... 24 more

我知道之前有几个关于这个问题的问题。但这有点不同，因为此错误仅发生在运行 Android KitKat 及之前版本 (API <=19) 的设备上。当我在运行 Android Lollipop (API >=21) 的设备上执行相同的代码时 - NO 没有任何修改，它运行得非常好。

有人能指出这里的问题是什么以及如何解决吗？

这是我项目的build.gradle:

apply plugin: 'com.android.application'

android {
    compileSdkVersion 22
    buildToolsVersion "22.0.1"
    defaultConfig {
        applicationId 'com.udrink'
        minSdkVersion 16
        targetSdkVersion 22
        versionCode 1
        versionName "1.0"
        renderscriptTargetApi 22
        renderscriptSupportModeEnabled true
        multiDexEnabled true
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    productFlavors {
    }
}

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    // Module dependency on ParseLoginUI library sources
    compile 'com.google.android.gms:play-services:7.5.0'
    compile 'com.android.support:appcompat-v7:22.2.1'
    compile 'com.android.support:recyclerview-v7:22.2.1'
    compile 'com.android.support:cardview-v7:22.2.1'
    compile 'com.android.support:design:22.2.1'
    compile 'com.tonicartos:superslim:0.4.13'
    compile 'com.makeramen:roundedimageview:2.1.0'
    compile 'com.daimajia.swipelayout:library:1.2.0'
    compile 'com.github.gabrielemariotti.cards:cardslib-core:2.1.0'
    compile 'com.github.gabrielemariotti.cards:cardslib-cards:2.1.0'
    compile 'com.github.gabrielemariotti.cards:cardslib-recyclerview:2.1.0'
    compile('com.mikepenz:actionitembadge:3.0.1@aar') {
        transitive = true
    }
    compile 'com.github.jd-alexander:library:1.0.5'
    compile 'com.github.castorflex.smoothprogressbar:library:1.1.0'
    compile 'com.github.castorflex.smoothprogressbar:library-circular:1.1.0'
    compile project(':ParseLoginUI')
    compile project(':crop')
}

我正在运行 Android Studio 1.3。

编辑

这里是一些额外的信息:

导致这个错误的具体代码是这样的:

at com.parse.ui.ParseLoginFragment.onCreateView(ParseLoginFragment.java:212)

在 ParseUI 中指向 ParseLoginFragment.java 中的这一行:

View v = inflater.inflate(R.layout.com_parse_ui_parse_login_fragment, parent, false);

如您所见，这只是简单的布局 inflate 代码，没有任何特定于 API 的函数。

此外，消息指定错误是:

java.lang.NoClassDefFoundError: Failed resolution of: Lcom/parse/ui/R$layout;

据我了解，这意味着未找到 ParseUI 的 R 类。

Answer 1

您应该先检查 API 级别，然后再调用比您的最小级别更高的代码 (API)。例如你的 minSdkVersion 是 16，而你使用的是 22 出生的 API，那么你需要

if (android.os.Build.VERSION.SDK_INT >=22)
{
     //the specify code.
}