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我的片段如下

public class NerdLauncherFragment extends Fragment {

    private RecyclerView mRecyclerView;

    private final String TAG = this.getTag();

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_nerd_launcher, container, false);
        mRecyclerView = view.findViewById(R.id.app_recycler_view);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
        setAdapter();
        return view;
    }

    private void setAdapter() {
        Intent intent = new Intent(Intent.ACTION_MAIN);
        intent.addCategory(Intent.CATEGORY_LAUNCHER);
        PackageManager packageManager = getActivity().getPackageManager();
        List<ResolveInfo> resolveInfos = packageManager.queryIntentActivities(intent, 0);
        Collections.sort(resolveInfos, new Comparator<ResolveInfo>() {
            @Override
            public int compare(ResolveInfo first, ResolveInfo second) {
                PackageManager pm = getActivity().getPackageManager();
                return String.CASE_INSENSITIVE_ORDER.compare(
                    first.loadLabel(pm).toString(), second.loadLabel(pm).toString());
            }
        });
        mRecyclerView.setAdapter(new ActivityAdapter(resolveInfos));
        Log.i(TAG, "Found : " + resolveInfos.size() + " activities.");
    }
}

我的 RecyclerView 适配器

public class ActivityAdapter extends RecyclerView.Adapter<ActivityHolder> {

    private List<ResolveInfo> mResolveInfos;

    public ActivityAdapter(List<ResolveInfo> resolveInfos) {
        mResolveInfos = resolveInfos;
    }

    @NonNull
    @Override
    public ActivityHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        LayoutInflater layoutInflater = LayoutInflater.from(getActivity());
        View view = layoutInflater.inflate(R.layout.simple_list_item_1, parent, false);
        return new ActivityHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull ActivityHolder holder, int position) {
        ResolveInfo resolveInfo = mResolveInfos.get(position);
        holder.bindView(resolveInfo);
    }

    @Override
    public int getItemCount() {
        return mResolveInfos.size();
    }
}

查看持有人

public class ActivityHolder extends RecyclerView.ViewHolder implements View.OnClickListener{

        private TextView mTextView;

        private ImageView mImageView;

        private ResolveInfo mResolveInfo;

        public ActivityHolder(@NonNull View itemView) {
            super(itemView);
            mTextView = itemView.findViewById(R.id.id_app_name);
            mImageView = itemView.findViewById(R.id.id_app_image);
        }

        public void bindView(ResolveInfo resolveInfo) {
            mResolveInfo = resolveInfo;
            PackageManager pm = getActivity().getPackageManager();
            String appName = mResolveInfo.loadLabel(pm).toString();
            mImageView.setImageDrawable(mResolveInfo.loadIcon(pm));
            mTextView.setText(appName);
            mTextView.setOnClickListener(this);
        }

        @Override
        public void onClick(View v) {
            ActivityInfo activityInfo = mResolveInfo.activityInfo;
            Intent intent = new Intent(Intent.ACTION_MAIN).setClassName(
                activityInfo.applicationInfo.packageName, activityInfo.name).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            startActivity(intent);
        }
    }

布局文件：fragment_nerd_launcher.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.recyclerview.widget.RecyclerView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="match_parent"
    android:layout_width="match_parent"
   android:id="@+id/app_recycler_view">

</androidx.recyclerview.widget.RecyclerView>

ViewAdapter 布局：simple_list_item_1.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="wrap_content"
    android:layout_marginStart="8dp"
    android:layout_marginEnd="8dp"
    android:layout_width="match_parent">
    <TextView
        android:id="@+id/id_app_name"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:textAppearance="@style/TextAppearance.AppCompat"
        android:layout_weight="1">
    </TextView>
    <ImageView
        android:id="@+id/id_app_image"
        android:layout_width="wrap_content"
        android:layout_height="48dp" />
</LinearLayout>

espresso 测试不调用 onclick 方法。

    @Override
    public void onClick(View v) {
        ActivityInfo activityInfo = mResolveInfo.activityInfo;
        Intent intent = new Intent(Intent.ACTION_MAIN).setClassName(
            activityInfo.applicationInfo.packageName, activityInfo.name).addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(intent);
    }

当我在 Android Studio 中运行应用程序时，会调用 onclick 侦听器，但不会在我编写 espresso 测试时调用。我的浓缩咖啡测试如下

@RunWith(AndroidJUnit4.class)
@LargeTest
public class NerdLauncherActivityTest {
  @Rule
  public ActivityScenarioRule<NerdLauncherActivity> activityScenarioRule =
      new ActivityScenarioRule<NerdLauncherActivity>(NerdLauncherActivity.class);

  @Before
  public void setUp() {
    Intents.init();
  }

  @After
  public void tearDown() {
    Intents.release();
  }


  @Test
  public void testLaunchApp() {
    Espresso.onView(ViewMatchers.withId(R.id.app_recycler_view)).perform(
        RecyclerViewActions.actionOnItemAtPosition(0, ViewActions.click()));
    Matcher<Intent> expectedIntent = Matchers.allOf(IntentMatchers.hasAction(Intent.ACTION_MAIN),
        IntentMatchers.hasFlag(Intent.FLAG_ACTIVITY_NEW_TASK));
    Intents.intended(expectedIntent);
    Intents.intending(expectedIntent).respondWith(new Instrumentation.ActivityResult(0, null));
  }
}

它在这条线上失败

Intents.intended(expectedIntent);

堆栈跟踪

IntentMatcher: (has action: is "android.intent.action.SEND" and flags: 10000000)

Matched intents:[]

Recorded intents:[]
at dalvik.system.VMStack.getThreadStackTrace(Native Method)
at java.lang.Thread.getStackTrace(Thread.java:1720)
at androidx.test.espresso.base.DefaultFailureHandler.getUserFriendlyError(DefaultFailureHandler.java:96)
at androidx.test.espresso.base.DefaultFailureHandler.handle(DefaultFailureHandler.java:59)
at androidx.test.espresso.ViewInteraction.waitForAndHandleInteractionResults(ViewInteraction.java:324)
at androidx.test.espresso.ViewInteraction.check(ViewInteraction.java:306)
at androidx.test.espresso.intent.Intents.intended(Intents.java:190)
at androidx.test.espresso.intent.Intents.intended(Intents.java:170)
at 
. . . . . 
. . . . . 
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at androidx.test.internal.runner.TestExecutor.execute(TestExecutor.java:56)
at androidx.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:392)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:2189)
Caused by: junit.framework.AssertionFailedError: Wanted to match 1 intents. Actually matched 0 intents.

我不知道我做错了什么。

4

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