Android Stutio 3.0 - Gradle sync failed

 0.Android Studio 權威教程

(url:http://blog.csdn.net/column/details/zsl-androidstudio.html) 

1. 項目老是報錯:

Gradle sync failed: Argument for @NotNull parameter 'key' of com/android/tools/idea/gradle/project/model/ide/android/ModelCache.computeIfAbsent must not be null
Gradle project sync failed. pliease fix your project and try again
      

solution, Gradle 設定其到本地(我android-studio安裝在"C:/android-studio"):

File->Setting->Build,Execution,Deployment->Gradle:

1. Use locla gradle distribution

C:/android-studio/gradle/gradle-4.1-milestone-1

 不行的話, 見 第4點 , 此處設定 恢複預設, 更改 Gradle 版本

2.修改LogCat的顔色

1. File->Settings 或Ctrl + Alt +S
2. 找到 Editor -> Colors &Fonts -> Android Logcat 或在上面的搜尋框中輸入Logcat
3. 點中Verbose , Info, Debug等選項，然後在後面将Use Inberited attributes 去掉勾選
4. 再将 Foreground 前的複選框選上，就可以輕按兩下後面的框框去選擇顔色了
5. Apply–>OK

Log級别    色值
VERBOSE   BBBBBB
DEBUG     63AABB
INFO      211DD5
WARN      BBBB23
ERROR     FF0006
ASSERT    8F0005      

(url:http://blog.csdn.net/yy1300326388/article/details/45825123)

3.添加你見過的最牛Log*神器*

logcat中列印位置,可以點選跳轉 Git:https://github.com/orhanobut/logger

(url:http://blog.csdn.net/yy1300326388/article/details/45825343)

4.AndroidStudio中使用Aliyun Maven

Aliyun Maven位址：http://maven.aliyun.com

在項目級别的build.gradle中添加如下Maven位址：

buildscript {
    repositories {
        maven{ url 'http://maven.aliyun.com/nexus/content/groups/public/'}
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.3'
    }
}

allprojects {
    repositories {
        maven{ url 'http://maven.aliyun.com/nexus/content/groups/public/'}
        jcenter()
    }
}      

4.Error:Unable to find method 'com.android.build.gradle.tasks.factory.AndroidJavaCompile.setDependencyCacheDir(Ljava/io/File;)V'.

Error:Unable to find method 'com.android.build.gradle.tasks.factory.AndroidJavaCompile.setDependencyCacheDir(Ljava/io/File;)V'. Possible causes for this unexpected error include:

• Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.) Re-download dependencies and sync project (requires network)
• The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem. Stop Gradle build processes (requires restart)
• Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.

In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes.

??????

按錯誤提示，多次點選【Re-download dependencies and sync project (requires network)】發覺都無任何效果；點選【Stop Gradle build processes (requires restart)】，在Android Studio重新開機幾次之後也無效果。 

此時懷疑有可能是Gradle版本問題，檢視該程式的Gradle版本為：

classpath 'com.android.tools.build:gradle:2.1.3'           

檢視本機發現并不包含此版本的Gradle，是以将其修改為本機已經下載下傳的Gradle版本：

classpath 'com.android.tools.build:gradle:2.2.0'           

重新編譯，錯誤變成了： 

該問題應該是因為本機沒有安裝appcompat-v7:25.3.1版本造成的，可采用如下兩種解決方案： 

①按照提示安裝新版本的包； 

②将該版本修改為本機已安裝的包版本，如25.2.0； 

經修改過後，程式可以編譯通過，問題順利解決。

上面問号中間是 網上搜到比較近似的,  我的實際情況是:

項目的  build.gradle 配置

buildscript {
    repositories {
        maven{ url 'http://maven.aliyun.com/nexus/content/groups/public/'}
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.2.0'
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
    }
}

allprojects {
    repositories {
        maven{ url 'http://maven.aliyun.com/nexus/content/groups/public/'}
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}      

Gradle 配置為 2.2.0

加 buildscript 和 allprojects 的 maven 配置是為了 下載下傳資源 使用國内的  maven  鏡像, 速度快

 之後更改 gradle/wrapper/gradle-wrapper.properties    (不手動改,也應該有錯誤提示, 點選自動 Fix )

    distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip

 然後編譯通過!!

< Kotlin > Android Studio3.0 Kotlin工程問題集 http://blog.csdn.net/poorkick/article/details/72599929

Android開發錯誤——Android Studio中遇到過的錯誤問題與解決方案彙總 http://blog.csdn.net/qq_30379689/article/details/52089633

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