build.gradle警告“避免在版本号中使用+" [英] build.gradle warning 'avoid using + in version numbers'

问题描述

这是我的build.gradle应用级文件.

apply plugin: 'com.android.application'

android {
    compileSdkVersion 26
    buildToolsVersion "26.0.2"
    defaultConfig {
        applicationId "it.myco.app.myproj"
        minSdkVersion 16
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:26.+'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    testCompile 'junit:junit:4.12'
}

Android Studio突出显示该行

Android Studio highlights the line

compile 'com.android.support:appcompat-v7:26.+'

显示消息

避免在版本号中使用+可能导致无法预测的结果， 不可重复的构建

avoid using + in version numbers can lead to unpredictable and unrepeatable builds

此行由Android Studio自动生成.为什么显示此警告消息?我需要写些什么来解决警告?

This line is auto-generated by Android Studio. Why this warning message? What I need to write to solve the warning ?

推荐答案

总有一天，其他人可能会对您的代码执行git pull，然后尝试构建apk.该apk可能具有不同的行为，甚至会出现构建错误或运行时错误，因为依赖版本可能与创建此代码时使用的依赖不同.

Someday, someone else may do a git pull on your code and then try build an apk. This apk may have different behavior or even get a build error or run time error, because the dependencies version can be different than the dependencies used when you created this code.

您应该使用显式依赖项版本.我建议使用最新版本.您可以在 bintray jcenter 上搜索以查看最新版本.如果您使用的是Android Studio，File -> Project Structure -> Modules -> (your module, app usually) -> Dependencies -> Add library dependency (click the + sign)会为您提供最新版本，甚至自动添加库.

You should use an explicit dependency version. I suggest use the newest version. You can search on bintray jcenter to see the newest version. If you are using Android Studio, File -> Project Structure -> Modules -> (your module, app usually) -> Dependencies -> Add library dependency (click the + sign) will give you the newest version, even add library automatically.

这篇关于build.gradle警告“避免在版本号中使用+"的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！