Possible pit solutions using dagger2 in kotlin

What is dagger2?

Dagger2 is an open source library based on Java annotations that completes dependency injection in the compilation stage. It is mainly used for decoupling between modules to facilitate testing.

1、 Kotlin dagger2 configuration

build.gradle

AppComponent

AppModule

Application

After the above configuration is completed, you can happily use dagger2 in kotlin.

For more information about kotlin dagger2 configuration, please refer to here: https://www.oudahe.com/p/40232/

2、 Pit encountered by kotlin using dagger2

At that time, I wanted to inject the presenter into the activity. The code is as follows. I couldn't figure it out without making projiect

Pit 1

Then I converted the kotlin code into bytecode and then into Java code, and found that the presenter was private

As we all know, injected objects cannot be private

You can compile successfully

Pit 2

summary

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