blocks|key|4255819|text|类或文件可以使用.kt扩展名表示Kotlin，也可以使用.java扩展名表示Java。您不能同时用这两种语言编写文件或类。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4255820|但是您的Java和Kotlin文件可以相互通信，即您可以使用变量创建Java类并在Kotlin文件中访问该变量，反之亦然。|4255821|因此您可以注入Kotlin类引用并在Java类中使用它，反之亦然。|4255822|这可能会有帮助：https://kotlinlang.org/docs/tutorials/mixing-java-kotlin-intellij.html|offset|length|4255823|我希望这消除了疑虑。|4255824|entityMap|0|LINK|mutability|MUTABLE|url|https://kotlinlang.org/docs/tutorials/mixing-java-kotlin-intellij.html^0|0|0|0|8|1Y|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|V|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|W|8|@]|9|@$H|X|I|Y|1|Z]]|A|$]]|$1|J|3|K|5|6|7|10|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]]]

A class or file can either have .kt extension means Kotlin, or have .java extension means Java. You can't write a file or class in both the languages simultaneously.

But your Java and Kotlin files can talk with each other, i.e you can a Java class with a variable and access that variable in your Kotlin file or vice-versa.

So you can inject a Kotlin class reference and use that in your Java class and Vice-versa.

This might help: <a href="https://kotlinlang.org/docs/tutorials/mixing-java-kotlin-intellij.html" rel="nofollow noreferrer">https://kotlinlang.org/docs/tutorials/mixing-java-kotlin-intellij.html</a>

I hope that clears the doubt.

blocks|key|4256234|text|是的，这是可能的。只需将项目与此gradle文件同步|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4256235|implementation+"org.koin:koin-java:$koin_version"|code-block|syntax|javascript|4256236|在java类中|4256237|+//+Inject+MyPresenter
+replace+//val+presenter+:+MyPresenter+by+inject()

+++with++private+Lazy<MyPresenter>+presenter+=+inject(MyPresenter.class);|4256238|并在Java类中获取presenter方法，如下所示|4256239|presenter.getValue().sayHello()+|4256240|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Yes it is Possible.
Just sync project with this gradle file

<pre><code>implementation "org.koin:koin-java:$koin_version"
</code></pre>

In your java class 

<pre><code> // Inject MyPresenter
 replace //val presenter : MyPresenter by inject()

 with private Lazy&lt;MyPresenter&gt; presenter = inject(MyPresenter.class);
</code></pre>

and get presenter method inside Java class like

<pre><code>presenter.getValue().sayHello() 
</code></pre>

blocks|key|4256284|text|是的，确保在gradle中导入koin+for+java库并使用上面的答案。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4256285|Gradle：|4256286|implementation+"org.koin:koin-java:2.0.1"|code-block|syntax|javascript|4256287|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

It is, make sure you import in gradle the koin for java library and use above answers.

Gradle: 

<pre><code>implementation "org.koin:koin-java:2.0.1"
</code></pre>

blocks|key|4256309|text|您不再需要额外的koin-java依赖项，因为它现在是koin-android+&+koin-core的一部分。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4256310|//+Imports
import+static+org.koin.java.KoinJavaComponent.get;
import+static+org.koin.java.KoinJavaComponent.inject;
import+static+org.koin.core.qualifier.QualifierKt.named;
import+static+org.koin.core.parameter.DefinitionParametersKt.parametersOf;

//+Lazy+injection
Lazy<MyDependency>+dependency+=+inject(MyDependency.class);

//+Eager+injection
MyDependency+dependency+=+get(MyDependency.class);

//+Named+injection
get(MyDependency.class,+named("MyNamedDependency"));

//+Parameter+injection
get(MyDependency.class,+null,+()+->+parametersOf(this));|code-block|syntax|javascript|4256311|Koin+Android+Java+docs|4256312|entityMap|0|LINK|mutability|MUTABLE|url|https://insert-koin.io/docs/quickstart/android-java/^0|8|9|R|C|16|9|0|0|0|M|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|11|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|12|8|@]|D|@$9|13|A|14|1|15]]|E|$]]|$1|M|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|N|$O|$5|P|Q|R|E|$S|T]]]]

You no longer need the additional <code>koin-java</code> dependency as this is now a part of <code>koin-android</code> &amp; <code>koin-core</code>.
<pre class="lang-java prettyprint-override"><code>// Imports
import static org.koin.java.KoinJavaComponent.get;
import static org.koin.java.KoinJavaComponent.inject;
import static org.koin.core.qualifier.QualifierKt.named;
import static org.koin.core.parameter.DefinitionParametersKt.parametersOf;

// Lazy injection
Lazy&lt;MyDependency&gt; dependency = inject(MyDependency.class);

// Eager injection
MyDependency dependency = get(MyDependency.class);

// Named injection
get(MyDependency.class, named(&quot;MyNamedDependency&quot;));

// Parameter injection
get(MyDependency.class, null, () -&gt; parametersOf(this));
</code></pre>
<a href="https://insert-koin.io/docs/quickstart/android-java/" rel="nofollow noreferrer">Koin Android Java docs</a>

I'm trying to replace Dagger 2 to <a href="https://insert-koin.io" rel="noreferrer">Koin</a> in my current project and I don't want to rewrite some classes in Kotlin to use it.

Is possible to inject with Koin in java classes?

In Kotlin is just

<pre><code>// Inject MyPresenter
val presenter : MyPresenter by inject()
</code></pre>

Thanks

Inject Koin in Java classes

在我当前的项目中，我正在尝试将Dagger 2替换为，并且我不想在Kotlin中重写一些类来使用它。可以在java类中使用Koin进行注入吗？在Kotlin就是// Inject MyPresenterval presenter : MyPresenter by inject()谢谢

问在Java类中注入Koin
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