Android X:tools:replace 在 line:for 属性中指定，但没有指定新值

Android X: tools:replace specified at line: for attribute, but no new value specified(Android X:tools:replace 在 line:for 属性中指定，但没有指定新值)

问题描述

我在这个网站上尝试了很多解决方案，但问题仍然没有解决.问题是由于 Android X 库造成的.当我添加 Android X 时，这个问题得到了解决，但它打开了新问题.如何解决这个问题?

I have tried many solutions on this website but still, the problem is not solved. The issue is due to Android X library. When I added Android X, this issue was resolved but it opened up new issue. How to fix this issue?

之前这个错误出现了:

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 value=(androidx.core.app.CoreComponentFactory).
Suggestion: add 'tools:replace="android:appComponentFactory"' to <application> element at AndroidManifest.xml:19:5-142:19 to override.

我添加了tools:replace="android:appComponentFactory"后，出现了这个错误:

After I added tools:replace="android:appComponentFactory", this error is came:

 java.lang.RuntimeException: Manifest merger failed with multiple errors, see logs
at com.android.builder.core.AndroidBuilder.mergeManifestsForApplication(AndroidBuilder.java:540)    
at com.android.build.gradle.tasks.MergeManifests.doFullTaskAction(MergeManifests.java:173)

合并错误(在 Android 清单中):

Merging Error (in Android Manifest):

错误:工具:替换在第 2 行指定的属性android:appComponentFactory，但没有指定新值 app main清单(此文件)，第 1 行

Error: tools:replace specified at line:2 for attribute android:appComponentFactory, but no new value specified app main manifest (this file), line 1

清单:

<?xml version="1.0" encoding="utf-8"?>
<manifest
    package="com.example"
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    tools:replace="allowBackup, android:appComponentFactory"
    android:allowBackup="false">

    ...

    <application
        android:name="com.example"
        android:icon="@mipmap/icon"
        android:debuggable="true"
        android:hardwareAccelerated="false"
        android:largeHeap="true"
        android:supportsRtl="true"
        android:theme="@style/AppTheme"
        android:allowBackup="false"
        tools:ignore="GoogleAppIndexingWarning,HardcodedDebugMode">
       ...

推荐答案

我认为您正在迁移到 AndroidX 库.

I think you are migrating to AndroidX libs.

将下面的行添加到 gradle.properties 文件

Add below lines to gradle.properties file

android.useAndroidX=true
android.enableJetifier=true

从清单中删除 tools:replace="android:appComponentFactory".

将 android.support.v7.app.AppCompatActivity 替换为 androidx.appcompat.app.AppCompatActivity

迁移到 AndroidX

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