前言

最近代码中依赖版本更新后,需要兼容'androidx.appcompat从引发了些兼容suppot包的问题.

探索

操作一

我们将依赖更新至implementation 'androidx.appcompat:appcompat:1.1.0'
运行后报错

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:1.1.0] 
AndroidManifest.xml:24:18-86 value=(androidx.core.app.CoreComponentFactory).
Suggestion: add 'tools:replace="android:appComponentFactory"' to <application> element at AndroidManifest.xml:5:5-19:19 to override.

操作二

根据报错信息我们配置AndroidManifest.xml
我们增加tools:replace="android:appComponentFactory"

<application
    tools:replace="android:appComponentFactory"
    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="com.zxn.mvpdemo.MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

在运行后报错

java.lang.RuntimeException: Manifest merger failed with multiple errors, see logs
at com.android.builder.core.AndroidBuilder.mergeManifestsForApplication(AndroidBuilder.java:556)
at com.android.build.gradle.tasks.ProcessApplicationManifest.doFullTaskAction(ProcessApplicationManifest.java:198)

操作三

我们继续在清单文件中配置:
android:appComponentFactory=""
再次运行后报错

Static interface methods are only supported starting with Android N (--min-api 24): void butterknife.Unbinder.lambda$static$0()

操作四

我们在app中build.gradle中android 节点下配置

compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

结果如下

android {
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

再次运行后报错

Program type already present: androidx.versionedparcelable.CustomVersionedParcelable

操作五

我们进行如下操作

• 1.选择工程右键→Refactor→Migrate to Androidx...
• 2.选中所有需要重命名的目录，执行Do Refactor
  再次运行后报错

12/27 12:40:37: Launching 'app' on HUAWEI EML-AL00.
Installation did not succeed.
The application could not be installed: INSTALL_PARSE_FAILED_MANIFEST_MALFORMED
Installation failed due to: 'null'

操作六

我们删除编译后的缓存
程序发布成功

兼容androidx需要做如何下操作五才是关键之举.