Failed to resolve: com.android.support:appcompat-v7:27.0.1問題解決

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今天，在毫無徵兆的情況下AndroidStudio又抽風了，搞了大半天，試了網上眾多方案，終於解決了這個問題。咱們一步一步來

第一步：這是最開始的bug 
Error:Failed to resolve: com.android.support:support-annotations:27.0.1 
Install Repository and sync project
Open File
Show in Project Structure dialog 
Error:Failed to resolve: com.android.support:appcompat-v7:27.0.1 
Install Repository and sync project
Open File
Show in Project Structure dialog

這個問題可以通過修改project的gradle，添加maven { url “https://maven.google.com” }即可， 
 
同時，開啟SDK Manager 
 
檢查repository是否已經下載，並安裝 

第二步：問題還是沒有解決，甚至報錯，習慣就好 
Error:A problem occurred configuring project ‘:app’.

Could not resolve all dependencies for configuration ‘:app:_debugApkCopy’. 
Could not find com.android.support:appcompat-v7:27.0.1. 
Required by: 
MakerOnly0818:app:unspecified 
MakerOnly0818:app:unspecified > com.gyf.barlibrary:barlibrary:2.1.4 
MakerOnly0818:app:unspecified > MakerOnly0818:imagepicker:unspecified 
Could not find com.android.support:appcompat-v7:27.0.1. 
Required by: 
MakerOnly0818:app:unspecified > com.roughike:bottom-bar:1.3.4 
Could not find com.android.support:appcompat-v7:27.0.1. 
Required by: 
MakerOnly0818:app:unspecified > com.bigkoo:convenientbanner:2.0.5 
Could not find com.android.support:appcompat-v7:27.0.1. 
Required by: 
MakerOnly0818:app:unspecified > com.zhy:flowlayout-lib:1.0.3 
Could not find com.android.support:support-v4:27.0.1. 
Required by: 
MakerOnly0818:app:unspecified > MakerOnly0818:slidingmenu:unspecified 
Could not find com.android.support:appcompat-v7:27.0.1. 
Required by: 
MakerOnly0818:app:unspecified > cn.yipianfengye.android:zxing-library:2.2 
Could not find com.android.support:support-v4:27.0.1. 
Required by: 
MakerOnly0818:app:unspecified > cn.yipianfengye.android:zxing-library:2.2 
Could not find com.android.support:appcompat-v7:27.0.1. 
Required by: 
MakerOnly0818:app:unspecified > me.weyye.hipermission:library:1.0.3 
Could not find com.android.support:appcompat-v7:27.0.1. 
Required by: 
MakerOnly0818:app:unspecified > MakerOnly0818:NIM_Android_UIKit-master:unspecified 
MakerOnly0818:app:unspecified > MakerOnly0818:NIM_Android_UIKit-master:unspecified > com.android.support:design:25.0.1 
Could not find com.android.support:support-v4:27.0.1. 
Required by: 
MakerOnly0818:app:unspecified > com.twitter.sdk.android:tweet-ui:3.1.0 
MakerOnly0818:app:unspecified > com.twitter.sdk.android:twitter-mopub:3.1.0 > com.mopub:mopub-sdk:4.11.0 
MakerOnly0818:app:unspecified > com.twitter.sdk.android:twitter-mopub:3.1.0 > com.mopub:mopub-sdk:4.11.0 > com.mopub:mopub-sdk-base:4.11.0 
MakerOnly0818:app:unspecified > com.twitter.sdk.android:twitter-mopub:3.1.0 > com.mopub:mopub-sdk:4.11.0 > com.mopub:mopub-sdk-banner:4.11.0 
MakerOnly0818:app:unspecified > com.twitter.sdk.android:twitter-mopub:3.1.0 > com.mopub:mopub-sdk:4.11.0 > com.mopub:mopub-sdk-interstitial:4.11.0 
MakerOnly0818:app:unspecified > com.twitter.sdk.android:twitter-mopub:3.1.0 > com.mopub:mopub-sdk:4.11.0 > com.mopub:mopub-sdk-rewardedvideo:4.11.0 
MakerOnly0818:app:unspecified > com.twitter.sdk.android:twitter-mopub:3.1.0 > com.mopub:mopub-sdk:4.11.0 > com.mopub:mopub-sdk-native-static:4.11.0 
MakerOnly0818:app:unspecified > com.twitter.sdk.android:twitter-mopub:3.1.0 > com.mopub:mopub-sdk:4.11.0 > com.mopub:mopub-sdk-native-video:4.11.0 
這個問題，可以通過注釋掉module的gradle中的androidTestCompile部分代碼即可。 
第三步:然後又爆出這個問題，問題已經好轉，報錯資訊越來越少了哈哈 
Error:(15, 21) No resource found that matches the given name: attr ‘android:keyboardNavigationCluster’. 
通過下面這個連結的一個回答解決了，stackoverflow可能打不開，下面我介紹一下：就是解決方案 
https://stackoverflow.com/questions/45301203/no-resource-found-that-matches-the-given-name-attr-androidkeyboardnavigationc/45307273

的 
 
簡單說就是修改module的gradle 
1.把compileSdkVersion改26 
2.buildToolsVersion改”26.0.1” 
3.compile ‘com.android.support:appcompat-v7:26.0.1’替換之前的版本 
4.sync後會提示下載更新，完成後問題就解決了。

雖說問題解決了，但是也許解決方案並不是萬能的，如有其他情況未能解決也歡迎評論，同時qq群492462202歡迎交流。感覺有協助就贊助一下吧 ！ 

 

引用原文：78732460

 

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如果有什麼問題，歡迎大家一起探討，代碼如有問題，歡迎各位大神指正！

Failed to resolve: com.android.support:appcompat-v7:27.0.1問題解決