Solve the problem that kotlin writes the Android project compilation report execution failed for task ': app:kaptdebugkotlin'. Exception

solve kotlin Write Android Project compilation report Execution failed for task ‘:app:kaptDebugKotlin‘. abnormal

The error reporting Title encountered is also app:kaptDebugKotlin, The specific error information is not , You can also try this method .

Try something ： take kapt Change it to annotationProcesser（ solve ）, And synchronize the project
My project uses room, It was originally introduced like this ：

//kotlin databinding
    kapt "com.android.databinding:compiler:4.1.1"

    //Android route （ For different app Jump between ）
    implementation 'com.alibaba:arouter-api:1.5.0'
    kapt 'com.alibaba:arouter-compiler:1.2.2'

If it is written like this, it will report an error , use annotationProcessor Replace kapt, And synchronize the project is no problem ：

//kotlin databinding
    annotationProcessor "com.android.databinding:compiler:4.1.1"

    //Android route （ For different app Jump between ）
    implementation 'com.alibaba:arouter-api:1.5.0'
    annotationProcessor 'com.alibaba:arouter-compiler:1.2.2'

         But in kotlin Shouldn't we use kapt Replace annotationProcessor Do you , It took me a long time to run my own project , It's been a long time kapt The problem of , There was nothing wrong with the project , Deleted customized BaseActivity and BaseFragment, Build the project directly , I can't find the wrong report BaseActivity and BaseFragment, hold BaseActivity and BaseFragment Change to BaseRxActivity and BaseRxFragment, Build the project , I can't find the wrong report BaseActivity and BaseFragment, hold BaseActivity and BaseFragment Change to BaseRxActivity and BaseRxFragment, Build the project （ Some more BaseActivity and BaseFragment The replacement is not complete ）, There is such a problem , This problem is difficult to encounter for thousands of years ,

May be kotlin The reason for compiling , Many methods that can be tried have been tried , Still keep reporting this error , After changing a part of the original , Build without error ,Rebuild Don't complain , Run to the mobile phone or simulator and start to report errors app:kaptDebugKotlin, Got it 3 It has been reporting errors for more than an hour app:kaptDebugKotlin, Finally, use this scheme to kapt Changed to annotationProcessor, Then the synchronization , Then run it to the mobile phone or simulator ,

At this time, I found that the code reported an error （ It's strange , Build and Rebuild Never report an error , Clear the cache and restart without error , Turn it off and on again Android Studio Don't complain , Build and Rebuild Never report an error , hold kapt Changed to annotationProcessor, An error is reported after synchronization , The error is reported because it cannot be found BaseActivity and BaseFragment）, And then put BaseActivity and BaseFragment Change to BaseRxActivity and BaseRxFragment, Build the project , I found that some pages reported errors and could not be found BaseActivity and BaseFragment, Just keep changing , After the change, run to the mobile phone or simulator , It's wrong not to report ...

But there will be some warnings , And then use kapt Replace annotationProcessor, And synchronize the project is no problem

//kotlin databinding
    kapt "com.android.databinding:compiler:4.1.1"

    //Android route （ For different app Jump between ）
    implementation 'com.alibaba:arouter-api:1.5.0'
    kapt 'com.alibaba:arouter-compiler:1.2.2'

Yes , What's going on ,Android Studio It's really fucking strange ...

If in doubt , Please contact the qq1164688204.

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