如何从Matcher<View>获取视图

import android.support.test.espresso.Espresso;
import android.support.test.espresso.ViewInteraction;
import android.support.test.espresso.matcher.ViewMatchers;
import android.support.test.runner.AndroidJUnit4;
import android.view.View;

import org.junit.Test;
import org.junit.runner.RunWith;

import static android.support.test.espresso.action.ViewActions.click;
import static android.support.test.espresso.action.ViewActions.typeText;
import static android.support.test.espresso.assertion.ViewAssertions.matches;
import static android.support.test.espresso.matcher.ViewMatchers.withId;
import static android.support.test.espresso.matcher.ViewMatchers.withText;

@RunWith(AndroidJUnit4.class)
public class ExampleInstrumentedTest {

    @Test
    public void testGetViewFromMatcher() {
        // 创建一个Matcher<View>对象，用于匹配视图
        Matcher<View> matcher = withId(R.id.myButton);

        // 使用ViewInteraction类的静态方法onView()创建一个ViewInteraction对象
        ViewInteraction interaction = Espresso.onView(matcher);

        // 使用ViewInteraction对象执行操作或验证视图
        interaction.perform(click());

        // 使用ViewInteraction对象验证视图的属性或状态
        interaction.check(matches(withText("Clicked")));
    }
}