Android的一些error及其解决方案及建议

（第一次写博客勿喷 谢谢）

有的小伙伴用新建的项目就没法编译
出现图中错误
app/build.gradle
将其设置为compile ‘com.android.support:appcompat-v7:26.0.0’
更推荐升级AS

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当编辑器未发现错误，logcat也没有的时候build->clean progect （未必有效）

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在添加图片时：

Error:java.lang.RuntimeException: Some file crunching failed, see logs for details
Error:Execution failed for task ':app:mergeDebugResources'.
Error: java.lang.RuntimeException: Some file crunching failed, see logs for details

可在app/build.gradle中添加

  aaptOptions {
             cruncherEnabled = false
            useNewCruncher = false
    
        }

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在build文件中，当代码为：

  implementation 'com.android.support:design:24.1.0'
    mplementation 'com.android.support:appcompat-v7:28.0.0'

Alt+Enter提示消息为：

All com.android.support libraries must use the exact same version specification (mixing versions can lead to runtime crashes). Found versions 28.0.0, 24.1.0. Examples include com.android.support:animated-vector-drawable:28.0.0 and com.android.support:design:24.1.0 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). Issue id: GradleCompatible

他们有兼容问题可改成，可将代码改成

implementation 'com.android.support:design:28.0.0'

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element relativelayout must be declared 说明.xml文件所在的包（文件）不对