解决support包引起的AndroidStudio编译报错
有时我们在引用support包的时候会遇到下面的错误，
AGPBI: {"kind":"error","text":"error: resource android:attr/colorError not found.","sources":[{"file":"C:\\Users\\qwe\\.gradle\\caches\\transforms-1\\files-1.1\\appcompat-v7-27.0.0.aar\\e789b9218a563087f526e1e34511490a\\res\\values-v26\\values-v26.xml","position":{"startLine":8,"startColumn":4,"startOffset":431,"endLine":11,"endColumn":12,"endOffset":652}}],"original":"","tool":"AAPT"}
AGPBI: {"kind":"error","text":"error: resource android:attr/colorError not found.","sources":[{"file":"C:\\Users\\qwe\\.gradle\\caches\\transforms-1\\files-1.1\\appcompat-v7-27.0.0.aar\\e789b9218a563087f526e1e34511490a\\res\\values-v26\\values-v26.xml","position":{"startLine":12,"startColumn":4,"startOffset":657,"endLine":15,"endColumn":12,"endOffset":891}}],"original":"","tool":"AAPT"}
AGPBI: {"kind":"error","text":"error: style attribute \u0027android:attr/keyboardNavigationCluster\u0027 not found.","sources":[{"file":"C:\\Users\\qwe\\.gradle\\caches\\transforms-1\\files-1.1\\appcompat-v7-27.0.0.aar\\e789b9218a563087f526e1e34511490a\\res\\values-v26\\values-v26.xml","position":{"startLine":16,"startColumn":4,"startOffset":896,"endColumn":92,"endOffset":984}}],"original":"","tool":"AAPT"}
AGPBI: {"kind":"error","text":"error: resource android:attr/fontStyle not found.","sources":[{"file":"C:\\Users\\qwe\\.gradle\\caches\\transforms-1\\files-1.1\\appcompat-v7-27.0.0.aar\\e789b9218a563087f526e1e34511490a\\res\\values\\values.xml","position":{"startLine":251,"startColumn":4,"startOffset":27028,"endColumn":68,"endOffset":27092}}],"original":"","tool":"AAPT"}
AGPBI: {"kind":"error","text":"error: resource android:attr/font not found.","sources":[{"file":"C:\\Users\\qwe\\.gradle\\caches\\transforms-1\\files-1.1\\appcompat-v7-27.0.0.aar\\e789b9218a563087f526e1e34511490a\\res\\values\\values.xml","position":{"startLine":251,"startColumn":4,"startOffset":27028,"endColumn":68,"endOffset":27092}}],"original":"","tool":"AAPT"}
AGPBI: {"kind":"error","text":"error: resource android:attr/fontWeight not found.","sources":[{"file":"C:\\Users\\qwe\\.gradle\\caches\\transforms-1\\files-1.1\\appcompat-v7-27.0.0.aar\\e789b9218a563087f526e1e34511490a\\res\\values\\values.xml","position":{"startLine":251,"startColumn":4,"startOffset":27028,"endColumn":68,"endOffset":27092}}],"original":"","tool":"AAPT"}
:app:processDebugResources
error: failed linking references.
:app:processDebugResources FAILED
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':app:processDebugResources'.
> Failed to process resources, see aapt output above for details.
{"kind":"error","text":"error: resource android:attr/colorError not found."
{"kind":"error","text":"error: resource android:attr/font not found."
* What went wrong:
Execution failed for task ':app:processDebugResources'.
> Failed to process resources, see aapt output above for details.
报各种资源找不到的错！！！
原因是
compileSdkVersion 25
低于
implementation 'com.android.support:appcompat-v7:27.0.0'
sdk编译版本低于support包的版本一般就会报这个错，当然并不是绝对的，一般是高版本的support包中的资源文件在底版本sdk中找不到的时候才会报错。
比如你compileSdkVerion 26,support版本用27.0.0的时候就不会报错。
但是如果你打开app下的build.gradle发现上述两个版本号一致，怎么也报错了，那你这个工程中肯定还有其他module，在其他module中引用了比主app中compileSdkVerion高的support包了
Studio在打包的时候会检测所有module中的support包，对于不同版本的情况，最终取最高版本的support包来为所有module进行编译。
原因知道了，解决办法就简单了，要么升sdk版本，要么降support版本。