添加Firebase后，所有com.android.support库都必须使用完全相同的版本规范 [英] All com.android.support libraries must use the exact same version specification after adding firebase

问题描述

我的android Studio显示此错误.

My android Studio shows this error.

所有com.android.support库必须使用完全相同的版本 规范(混合版本可能导致运行时崩溃).成立 版本27.1.1、26.1.0.例子包括 com.android.support:animated-vector-drawable:27.1.1和 com.android.support:support-media-compat:26.1.0以下...(Ctrl + F1) 有一些库，工具和库的组合， 不兼容，或可能导致错误.一种这样的不兼容是 使用不支持的Android支持库版本进行编译 最新版本(或特别是低于您的版本 targetSdkVersion).

All com.android.support libraries must use the exact same version specification (mixing versions can lead to runtime crashes). Found versions 27.1.1, 26.1.0. Examples include com.android.support:animated-vector-drawable:27.1.1 and com.android.support:support-media-compat:26.1.0 less... (Ctrl+F1) There are some combinations of libraries, or tools and libraries, that are incompatible, or can lead to bugs. One such incompatibility is compiling with a version of the Android support libraries that is not the latest version (or in particular, a version lower than your targetSdkVersion).

    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support.constraint:constraint-layout:1.1.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.google.firebase:firebase-core:15.0.0'

推荐答案

像com.google.firebase:firebase-core:15.0.0这样的主题取决于较早的支持库版本(26.1.0).
已经发布了15.0.2版本，因此您可以尝试:

It themes like com.google.firebase:firebase-core:15.0.0 depends on older support library varsion (26.1.0).
There already is 15.0.2 version released, so you could try to:

• 使用Firebase Core的15.0.2版本.可能是基于最新的支持库
• 忽略此消息，因为它是警告，而不是错误，可能您的应用程序可以正常使用. (不推荐，但可以使用)
• 将使用的支持库版本降级为26.1.0，因此它们是相同的版本.至少在google根据最新的支持lib版本发布firebase之前. (如果#1不起作用，建议的方式)

• use 15.0.2 version of firebase core. Probably it is based on latest support lib
• ignore this message, as it is a warning, not an error, and probably your app would work fine with it. (not recommended, but could work)
• downgrade your used support libs version to 26.1.0 so they are the same version. At least until google releases firebase based on the latest support lib version. (recommended way if #1 didn't work)

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