Android(安卓)Studio3.0.1版本更新后遇到的问题

在更新新版AndroidStudio3.0.1的时候（原来用的是2.1版本），遇到的两个问题，感觉有必要注明一下

问题一、编译时报错Error:Removing unused resources requires unused code shrinking to be turned on.

修改build.gradle文件，下面标红代码就是

buildTypes {    debug {        signingConfig signingConfigs.release        buildConfigField "boolean", "ISDEBUG", "true"        debuggable true        minifyEnabled true        shrinkResources true      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'    }    release {        signingConfig signingConfigs.release        minifyEnabled true        zipAlignEnabled true        debuggable true        shrinkResources true        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'    }} minifyEnabled true        shrinkResources true      proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'    }    release {        signingConfig signingConfigs.release        minifyEnabled true        zipAlignEnabled true        debuggable true        shrinkResources true        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'    }}

问题二、运行时报错

> Annotation processors must be explicitly declared now. The following dependencies on the compile classpath are found to contain annotation processor. Please add them to the annotationProcessor configuration.
- butterknife-7.0.1.jar (com.jakewharton:butterknife:7.0.1)
Alternatively, set android.defaultConfig.javaCompileOptions.annotationProcessorOptions.includeCompileClasspath = true to continue with previous behavior. Note that this option is deprecated and will be removed in the future.
See https://developer.android.com/r/tools/annotation-processor-error-message.html for more details.

在app的build中添加

android {    ...    defaultConfig {        ...        //添加如下配置就OK了        javaCompileOptions { annotationProcessorOptions { includeCompileClasspath = true } }    }    ...}

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