Passing runtime parameter to constructor in Hilt

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In Dagger, we can pass the runtime parameter through component.builder. But how to achieve that in hilt where the Component is Built in?

public class ProgressData {
private int percent;
@Inject
public ProgressData(int percent) {
    this.percent = percent;
}
public int getPercent() {
    return percent;
}
public void setPercent(int percent) {
    this.percent = percent;
}

How to inject an object of ProgressData in the main activity while percent data is set in runtime?

dagger-hilt android java
1 Answers

I found the answer. First Annotate the constructor with @AssistedInject. then we have to annotate percent as @Assisted.

public class ProgressData {
    private int percent;
    @AssistedInject
    public ProgressData(@Assisted int percent) {
        this.percent = percent;
    }

    
    public int getPercent() {
        return percent;
    }

    public void setPercent(int percent) {
        this.percent = percent;
    }
}

Then to provide value for percent we have to create a factory interface where we can pass all dependent variables. we have to annotate it with @AssistedFactory. Hilt will implement it internally.

@AssistedFactory
public interface ProgressDataFactory{
    ProgressData create(int percent);
}

Then from Activity or where we want we have to Inject the ProgressDataFactory .then we can call create function.

@Inject ProgressDataFactory progressDataFactory;
progressData=progressDataFactory.create(10);
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