如何在Android测试中监听Android ActivityTestRule的beforeActivityLaunched方法

Question

如何在android测试中监听ActivityTestRule的 beforeActivityLaunched()方法.

我的解决方法是创建一个自定义的ActivityTestRule并在构造函数上提供回调.这是一种不好的做法吗？同样的方法是可以监听ActivityTestRule构造函数方法.

这是我的代码:

public class CustomActivityTestRule<A extends Activity> extends ActivityTestRule<A> {

    public interface onBeforeListener{
        void onBefore(String message);
    }

    private onBeforeListener listener;

    public CustomActivityTestRule(Class<A> activityClass, onBeforeListener listener) {
        super(activityClass);
    }

    @Override
    protected void beforeActivityLaunched() {
        super.beforeActivityLaunched();
        listener.onBefore("before activity launch");
    }
}

在android测试类中,我可以做类似的事情:

@Rule public CustomActivityTestRule<MainActivity> mainActivityActivityTestRule = new
            CustomActivityTestRule<MainActivity>(MainActivity.class, new CustomActivityTestRule.onBeforeListener() {
        @Override
        public void onBefore(String message) {
            //do something before activity starts
        }
    });

同样,它可以在junit规则实例化上执行某些操作.有没有其他方法可以监听junit测试规则实例化？

Answer 1

您可以在beforeActivityLaunched不创建新类的情况下覆盖.

我在测试中使用以下内容:

@Rule
public ActivityTestRule<MainActivity> mainActivityActivityTestRule = new ActivityTestRule<MainActivity>(MainActivity.class) {

    @Override
    protected void beforeActivityLaunched() {
        super.beforeActivityLaunched();
    }

};