Java – how to use Guice to inject impl of some interfaces into Android activity

I use Guice 3.0 on Android to do some di

I have

public interface APIClient { }

and

public class DefaultAPIClient implements APIClient { }

What I do is try to boot Guice in my myapplication class and provide it with a module in the configure method bind (apicclient. Class) There is a statement in to (defaultapicclient. Class);

I did Guice's example to tell me what to do

Injector injector = Guice.createInjector(new APIClientModule());
injector.getInstance(APIClient.class);

I may not understand this correctly, but how do I inject apicclient into several activities that will use it?

I did this in homeactivity

public class HomeActivity extends RoboActivity {
    @Inject APIClient client;

    protected void onCreate(Bundle savedInstanceState) {
        client.doSomething();
    }
}

This doesn't work. It gives me Guice configuration error: 1) it doesn't implement com mycompany. Apicclient binding

So the only way I can make it work is to delete @ inject from the apicclient client in homeactivity and use client = Guice Createinjector (New apiclientmodule()) injects it getInstance(APIClient.class);

So does this mean that I have to do this in every activity that uses apicclient? I must have done something wrong

Any help would be great thank you!

Solution

If you compare roboguice 2.0 with Guice 3.0_ If noaop is used together, the method of defining other custom modules is through the string array resource file roboguice_ modules：

From document (upgradingto20):

<?xml version="1.0" encoding="utf-8"?>
<resources> 
    <string-array name="roboguice_modules">
        <item>PACKAGE.APIClientModule</item>
    </string-array>
</resources>

Therefore, you need to define a custom module as follows:

roboguice_ modules：

<?xml version="1.0" encoding="utf-8"?>
<resources> 
    <string-array name="roboguice_modules">
        <item>DONT_KNow_YOUR_PACKAGE.APIClientModule</item>
    </string-array>
</resources>

Of course, there is a binding between apicclient and defaultapicclient

And roboguice should do the rest