Java 和 Espresso - 无法输入，需要支持输入法或可从类分配：类 SearchView

Question

我正在尝试使用Espresso来测试带有以下xml:的应用程序

<com.google.android.material.textfield.TextInputLayout
android:id="@+id/tvLogin"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:hint="myHint"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<com.google.android.material.textfield.TextInputEditText
android:layout_width="match_parent"
android:layout_height="56dp"
android:imeOptions="flagNoExtractUi|actionNext"
android:inputType="text" />
</com.google.android.material.textfield.TextInputLayout>

这是我尝试运行的测试：

onView(withId(R.id.tvLogin)).check(ViewAssertions.matches(ViewMatchers.isDisplayed()));
onView(withId(R.id.tvLogin)).perform(typeText("test"));

我得到这个错误：

Caused by: java.lang.RuntimeException: Action will not be performed because the target view does not match one or more of the following constraints:
((is displayed on the screen to the user) and (supports input methods or is assignable from class: class android.widget.SearchView))
Target view: "TextInputLayout{id=2131362315, res-name=tvLogin, visibility=VISIBLE, width=831, height=144, has-focus=false, has-focusable=true, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, layout-params=androidx.constraintlayout.widget.ConstraintLayout$LayoutParams@8241b55, tag=null, root-is-layout-requested=false, has-input-connection=false, x=39.0, y=39.0, child-count=2}"

Answer 1

您的tvLogin是TextInputLayout，也是LinearLayout，因此在对其执行typeText()时会出现错误。由于typeText()仅适用于可编辑字段，而TextInputEditText是tvLogin的后代，因此您可以重写测试以使用Espresso:中的一个方便的匹配器ViewMatchers.supportInputMethods((

onView(allOf(supportsInputMethods(), isDescendantOfA(withId(R.id.tvLogin))))
.perform(typeText("test"))

或者，您可以提供TextInputEditText:的id

<com.google.android.material.textfield.TextInputEditText
android:id="@+id/tvLoginEditText"
android:layout_width="match_parent"
android:layout_height="56dp"
android:imeOptions="flagNoExtractUi|actionNext"
android:inputType="text" />

然后在可编辑字段上执行typeText()：

onView(withId(R.id.tvLoginEditText))
.perform(typeText("test"))