如何优雅的导入android studio项目,解决各种报错问题

(原创)

摘要:

android studio在导入他人项目时会遇到各种兼容性问题,各种报错,本文主要介绍利用复制原有项目依赖包和Build环境,以解决导入项目老旧或不兼容当前AS版本或环境的问题.

 

1.首先备份一份自有工程的依赖包和环境文件

 

准备 .gradle ,  gradle , build.gradle  文件用以替换到新项目中;

准备 app , gradle.properties , local.properties , settings.gradle用以更改新项目内容;

2.将1中准备的替换文件  .gradle ,  gradle , build.gradle   提换到新项目根目录中,选择替换.

3.逐个打开需要修改内容的文件,删除导入项目中的废弃语句,替换为自己能够运行的语句:

打开APP -> build.gradle ,替换语句(大部分项目可以全部替换).

 

打开gradle.properties,复制代码块中启用'android.useAndroidX'属性的语句(红色部分)到导入项目同名文件中,否则会报如下错误:

配置'debugRuntimeClasspath'包含AndroidX依赖项，但未启用'android.useAndroidX'属性，这可能会导致运行时问题.

# Project-wide Gradle settings.
# IDE (e.g. Android Studio) users:
# Gradle settings configured through the IDE *will override*
# any settings specified in this file.
# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html
# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true
# AndroidX package structure to make it clearer which packages are bundled with the
# Android operating system, and which are packaged with your app"s APK
# https://developer.android.com/topic/libraries/support-library/androidx-rn
android.useAndroidX=true
# Automatically convert third-party libraries to use AndroidX
android.enableJetifier=true

打开local.properties,复制代码块中配置SDK和NDK(如果有)的语句(红色部分)到导入项目同名文件中:

## This file is automatically generated by Android Studio.
# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
#
# This file should *NOT* be checked into Version Control Systems,
# as it contains information specific to your local configuration.
#
# Location of the SDK. This is only used by Gradle.
# For customization when using a Version Control System, please read the
# header note.
sdk.dir=C\:\\Users\\96325\\AppData\\Local\\Android\\Sdk

打开settings.gradle,复制加入红色部分代码到导入项目同名文件中:

dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
        google()
        mavenCentral()
        jcenter() // Warning: this repository is going to shut down soon
 } }
rootProject.name = "LitePalTest"
include ':app'

 

4.可以启动android studio,Open项目,试运行app

 

仍有可能报错:

 

(1).

Manifest merger failed : android:exported needs to be explicitly specified for <activity>. Apps targeting Android 12 and higher are required to specify an explicit value for `android:exported` when the corresponding component has an intent filter defined. See https://developer.android.com/guide/topics/manifest/activity-element#exported for details.

针对Android 12及更高版本的应用程序,当相应组件定义了意图过滤器时需要为“Android:exported”指定一个显式值.

 

解决方法:

在AndroidManifest中加入android:exported="true"

<activity android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

 

5.至此,环境与兼容性问题解决,导入项目成功.

本方法为自我学习研究的导入项目通法,不适用所有项目.