Android Studio使用ButterKnife各种错误解决Plugin with id 'android-apt' not found.

ButterKnife可以帮助我们查找控件，添加事件绑定等等，可以减少很多代码，但是在使用过程中对新手来说，往往会碰到很多坑。

AndroidStudio常见报错如下：

1、Gradle DSL method not found: 'apt()'
2、Plugin with id 'android-apt' not found.
3、Error:Could not find com.android.tools.build:gradle:1.2.3.
Searched in the following locations:

如何使用ButterKnife：

1、首先我们要使用，就需要引入相关的依赖包：

引入依赖包只需要在module的build.gradle文件的dependencies中添加下面两句：

compile'com.jakewharton:butterknife:8.4.0'

apt'com.jakewharton:butterknife-compiler:8.4.0'

2、然后我们点击Sync project with Gradle Files按钮进行同步，然后就报错了，错误如下：

E:\workspace\androidStudio\Project_YZ\LvBuBike_source\app\build.gradle

Error:(47, 0) Gradle DSL method not found: 'apt()'

Possible causes:<ul><li>The project 'LvBuBike_source' may be using a version of Gradle that does not contain the method.

<a href="open.wrapper.file">Open Gradle wrapper file</a></li><li>The build file may be missing a Gradle plugin.

<a href="apply.gradle.plugin">Apply Gradle plugin</a></li>

意思是没找到apt方法，我们只要在mobule的build.gradle文件的顶部添加这一句就行了：

applyplugin:'android-apt'

3、接着我们再进行同步，又报了如下错误：

E:\workspace\androidStudio\Project_YZ\LvBuBike_source\app\build.gradle

Error:(2, 0) Plugin with id 'android-apt' not found.

<a href="openFile:E:\workspace\androidStudio\Project_YZ\LvBuBike_source\app\build.gradle">Open File</a>

解决办法，在mobule的build.gradle文件中添加这样一段代码就ok了

buildscript {

repositories {

jcenter()

}

dependencies {

classpath'com.android.tools.build:gradle:1.2.3'

classpath'com.neenbedankt.gradle.plugins:android-apt:1.4'//Added line

}

}

4、如果在buildscript中只添加了dependencies，而没有添加repositores的话，会报如下错误：

Gradle 'LvBuBike_source' project refresh failed

Error:Could not find com.android.tools.build:gradle:1.2.3.

Searched in the following locations:

file:/D:/software/developer/AS_/setlocation/as/gradle/m2repository/com/android/tools/build/gradle/1.2.3/gradle-1.2.3.pom

file:/D:/software/developer/AS_/setlocation/as/gradle/m2repository/com/android/tools/build/gradle/1.2.3/gradle-1.2.3.jar

Required by:

LvBuBike_source:app:unspecified

5、总结来说不要忘了这三个地方

applyplugin:'android-apt'

compile'com.jakewharton:butterknife:8.4.0'

apt'com.jakewharton:butterknife-compiler:8.4.0'

buildscript {

repositories {

jcenter()

}

dependencies {

classpath'com.android.tools.build:gradle:1.2.3'

classpath'com.neenbedankt.gradle.plugins:android-apt:1.4'//Added line

}

}