如何優雅的導入android studio項目,解決各種報錯問題

(原創)

摘要:

android studio在導入他人項目時會遇到各種兼容性問題,各種報錯,本文主要介紹利用復制原有項目依賴包和Build環境,以解決導入項目老舊或不兼容當前AS版本或環境的問題.

 

1.首先備份一份自有工程的依賴包和環境文件

 

准備 .gradle ,  gradle , build.gradle  文件用以替換到新項目中;

准備 app , gradle.properties , local.properties , settings.gradle用以更改新項目內容;

2.將1中准備的替換文件  .gradle ,  gradle , build.gradle   提換到新項目根目錄中,選擇替換.

3.逐個打開需要修改內容的文件,刪除導入項目中的廢棄語句,替換為自己能夠運行的語句:

打開APP -> build.gradle ,替換語句(大部分項目可以全部替換).

 

打開gradle.properties,復制代碼塊中啟用'android.useAndroidX'屬性的語句(紅色部分)到導入項目同名文件中,否則會報如下錯誤:

配置'debugRuntimeClasspath'包含AndroidX依賴項，但未啟用'android.useAndroidX'屬性，這可能會導致運行時問題.

# 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

打開local.properties,復制代碼塊中配置SDK和NDK(如果有)的語句(紅色部分)到導入項目同名文件中:

## 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

打開settings.gradle,復制加入紅色部分代碼到導入項目同名文件中:

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.可以啟動android studio,Open項目,試運行app

 

仍有可能報錯:

 

(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.

針對Android 12及更高版本的應用程序,當相應組件定義了意圖過濾器時需要為“Android:exported”指定一個顯式值.

 

解決方法:

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,環境與兼容性問題解決,導入項目成功.

本方法為自我學習研究的導入項目通法,不適用所有項目.