相关疑难解决方法(0)

我正在尝试编译并运行为旧 Android 版本编写的演示应用程序。

我已更新所有文件以使用新的 androidx 库。这包括 gradle.build 清单和布局文件。它编译正确，但在主要活动上崩溃setContentView(R.layout.activity_main);

通过查看堆栈跟踪，我可以推断出它与 layout.xml 文件相关，因为应用程序在第一次设置时崩溃。但是在将 FloatingActionButton 从旧的 deisgn 库迁移到新的 deisgn 库后，我找不到布局文件的任何问题。

有任何想法吗？

堆：

I/zygote: Rejecting re-init on previously-failed class java.lang.Class<androidx.core.view.ViewCompat$2>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/view/View$OnUnhandledKeyEventListener;
        at void androidx.core.view.ViewCompat.setOnApplyWindowInsetsListener(android.view.View, androidx.core.view.OnApplyWindowInsetsListener) (ViewCompat.java:2423)
        at android.view.ViewGroup androidx.appcompat.app.AppCompatDelegateImpl.createSubDecor() (AppCompatDelegateImpl.java:750)
        at void androidx.appcompat.app.AppCompatDelegateImpl.ensureSubDecor() (AppCompatDelegateImpl.java:630)
        at void androidx.appcompat.app.AppCompatDelegateImpl.setContentView(int) (AppCompatDelegateImpl.java:529)
        at void androidx.appcompat.app.AppCompatActivity.setContentView(int) (AppCompatActivity.java:161)
        at void com.example.android.emojify.MainActivity.onCreate(android.os.Bundle) (MainActivity.java:75)
        at void android.app.Activity.performCreate(android.os.Bundle) (Activity.java:6975)
        at void android.app.Instrumentation.callActivityOnCreate(android.app.Activity, android.os.Bundle) (Instrumentation.java:1213)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2770)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:2892)
I/zygote:     at void …

Android Studio 3.1布局预览无法在当前主题中找到样式"coordinatorLayoutStyle".

Failed to instantiated one or more classes.
 Exception shown are :-
java.lang.ClassNotFoundException: android.view.View$OnUnhandledKeyEventListener

与androidx我一起构建Gradle时，出现以下错误。请帮我解决这个问题。

错误消息：清单合并失败：来自[com.android.support:support-compat:28.0.0]的属性application @ appComponentFactory value =（android.support.v4.app.CoreComponentFactory）是AndroidManifest.xml：22：18-91也出现在[androidx.core：core：1.0.0] AndroidManifest.xml：22：18-86 value =（androidx.core.app.CoreComponentFactory）。

表现：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.kanwarpreet.dealmybook">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <activity android:name=".activities.SplashActivity" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".activities.LoginActivity" />
        <activity android:name=".activities.RegisterActivity" />
        <activity
            android:name=".activities.HomeActivity"
            android:label="@string/title_activity_home"
            android:theme="@style/AppTheme.NoActionBar" />
        <activity
            android:name=".activities.BookDetailsActivity"
            android:label="@string/title_activity_book_details"
            android:theme="@style/AppTheme.NoActionBar"/>
        <activity android:name=".activities.AddBookActivity" />
    </application>

</manifest>

Build.Gradle：

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.kanwarpreet.dealmybook"
        minSdkVersion 21
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" …

我已经安装了 android 3.4.1，之后我正在设置我的 android sdk 29，然后停止并显示此错误。

错误：无法解决：com.android.support:appcompat-v7:29.0.0 能否请您帮帮我。

构建 gradle 模块应用插件：'com.android.application'

android {
    compileSdkVersion 29
    buildToolsVersion "29.0.0"
    defaultConfig {
        applicationId "com.example.testing"
        minSdkVersion 15
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:29.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    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'
}

构建gardle项目

 // Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories …

这是我的依赖项文件,编译'com.android.support:appcompat-v7.27.1.1'上有一个带下划线的红色文本

apply plugin: 'com.android.application'
 android {
compileSdkVersion 27
defaultConfig {
    applicationId "com.abc.mcaproject"
    minSdkVersion 21
    targetSdkVersion 27
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])


compile 'com.android.support:appcompat-v7.27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.0'
implementation 'com.google.firebase:firebase-database:11.6.0'
implementation 'com.google.firebase:firebase-messaging:11.6.0'
implementation 'com.google.firebase:firebase-auth:11.6.0'
implementation 'com.google.firebase:firebase-storage:11.6.0'
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'
}

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

因此,我在styles.xml中更改主题时遇到问题

我尝试在stackoverflow上查找其他类似的问题,他们建议我们改变版本的"buildToolsVersion",但我在gradle文件中看不到这样的单词.

我的Gradle文件(PROJECT): -

buildscript {

repositories {
    google()
    jcenter()
}
dependencies {
    classpath 'com.android.tools.build:gradle:3.1.2'


    // 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
}

我的build.gradle(模块:app):这是我的第二个gradle文件

     apply plugin: 'com.android.application'

 android {
 compileSdkVersion 28
 defaultConfig {
    applicationId "com.example.dhruv.testhello"
    minSdkVersion 15
    targetSdkVersion 28
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner 
 "android.support.test.runner.AndroidJUnitRunner"
 }
 buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), …

Google推出了新的Android扩展库（AndroidX）的早期预览，这基本上是根据其文档对现有android支持库和体系结构软件包进行的新替代。

但是这些android和androidx包之间的实际区别是什么。这两个软件包的正确用例，以及如何将现有的android软件包转换为androidx软件包。哪些软件包/库支持这些转换？

我已经更新了gradle.properties文件添加：

android.useAndroidX=true
android.enableJetifier=true

但是我有这个错误：

e: [kapt] An exception occurred: android.databinding.tool.util.LoggedErrorException: failure, see logs for details.
AndroidX Error: Both old and new data binding packages are available in dependencies. Make sure you've setup jettifier  for any data binding dependencies and also set android.useAndroidx in your gradle.properties file.
    at android.databinding.tool.util.L.printMessage(L.java:134)
    at android.databinding.tool.util.L.e(L.java:107)
    at android.databinding.tool.Context.discoverAndroidX(Context.kt:62)

我向项目添加了Firebase crashlytics依赖关系，此后该项目无法生成。

https://firebase.google.com/docs/crashlytics/get-started?authuser=0&platform=android#android

您能否建议我可能做错了什么。

谢谢R

在这些行上构建失败

implementation "com.google.android.gms:play-services-base:17.0.0"
implementation 'com.google.firebase:firebase-core:17.0.0'

这是错误日志

Task :app:processDebugManifest FAILED
C:\Development\xxx\xxx-app\android\app\src\main\AndroidManifest.xml:22:18-91 Error:
    Attribute application@appComponentFactory value=(android.support.v4.app.CoreComponentFactory) from [com.android.support:support-compat:28.0.0] AndroidManifest.xml:22:18-91
    is also present at [androidx.core:core:1.0.0] AndroidManifest.xml:22:18-86 value=(androidx.core.app.CoreComponentFactory).
    Suggestion: add 'tools:replace="android:appComponentFactory"' to <application> element at AndroidManifest.xml:7:5-35:19 to override.

See http://g.co/androidstudio/manifest-merger for more information about the manifest merger.


FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processDebugManifest'.
> Manifest merger failed : Attribute application@appComponentFactory value=(android.support.v4.app.CoreComponentFactory) from [com.android.support:support-compat:28.0.0] AndroidManifest.xml:22:18-91
    is also present at [androidx.core:core:1.0.0] AndroidManifest.xml:22:18-86 …

我试图从我的项目中完全删除firebase依赖项,但我已经设法完全搞砸了我的gradle,我需要帮助才能让它再次运行.我需要谷歌播放服务依赖,因为我正在使用谷歌地图和地理围栏.这是我每次尝试重建项目时都会遇到的错误.

java.lang.RuntimeException: com.android.build.api.transform.TransformException: Error while generating the main dex list.
    at com.android.builder.profile.Recorder$Block.handleException(Recorder.java:55)
    at com.android.builder.profile.ThreadRecorder.record(ThreadRecorder.java:104)
    at com.android.build.gradle.internal.pipeline.TransformTask.transform(TransformTask.java:212)
    at sun.reflect.GeneratedMethodAccessor896.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.gradle.internal.reflect.JavaMethod.invoke(JavaMethod.java:73)
    at org.gradle.api.internal.project.taskfactory.IncrementalTaskAction.doExecute(IncrementalTaskAction.java:46)
    at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:39)
    at org.gradle.api.internal.project.taskfactory.StandardTaskAction.execute(StandardTaskAction.java:26)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter$1.run(ExecuteActionsTaskExecuter.java:121)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:110)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:92)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70)
    at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
    at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:62)
    at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
    at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:60)
    at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:97)
    at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:87)
    at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
    at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
    at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:248)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
    at …