包含自定义视图的Android UI测试片段

我需要测试一个包含自定义视图的片段。我刚开始编写UI测试，但遇到了一个错误：

android.view.InflateException: Binary XML file line #36 in *****.staging.debug:layout/fragment_form: Binary XML file line #36 in *****.staging.debug:layout/fragment_form: Error inflating class *****.util.view.BrandedEditText
Caused by: android.view.InflateException: Binary XML file line #36 in *****.staging.debug:layout/fragmentn_form: Error inflating class *****.util.view.BrandedEditText
Caused by: java.lang.NoSuchMethodException: *****.util.view.BrandedEditText.<init> [class android.content.Context, interface android.util.AttributeSet]

FormFragment：

class FormFragment : BaseFragment(), Injectable {

    private val loadingDialog by lazy { LoadingDialog(requireContext()) }

    @Inject
    lateinit var viewModelFactory: DaggerViewModelFactory<FormViewModel>

    private val viewModel: FormViewModel by lazy {
        ViewModelProvider(
                this,
                viewModelFactory
        ).get(FormViewModel::class.java)
    }

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
        val binding: FragmentFormBinding = setAndBindContentView(inflater, container, R.layout.fragment_form)
        binding.viewModel = viewModel
        return binding.root
    }

...

类FormFragment:BaseFragment（），可注入{
通过惰性{loadingDialog（requireContext（））}加载私有val loadingDialog
@注入
lateinit变量viewModelFactory:DaggerViewModelFactory
private val viewModel:FormViewModel by lazy{
ViewModelProvider(
这
viewModelFactory
).get（FormViewModel:：class.java）
}
覆盖创建视图（充气机：布局充气机，容器：ViewGroup？，savedInstanceState:Bundle？）：视图{
val绑定：FragmentFormBinding=setAndBindContentView（充气机、容器、R.layout.fragment_表单）
binding.viewModel=viewModel
返回binding.root
}
...

基本片段：

abstract class BaseFragment : Fragment(), NavControllerOwner {

    protected var binding: ViewDataBinding? = null
    protected var isAlreadyBound = false

    protected val mainActivity: MainActivity?
        get() = activity as? MainActivity

    override val navController: NavController?
        get() = (activity as NavControllerOwner).navController

    @Suppress("UNCHECKED_CAST")
    protected fun <ViewBindingType : ViewDataBinding?> setAndBindContentView(
            inflater: LayoutInflater,
            container: ViewGroup?,
            @LayoutRes layoutResId: Int
    ): ViewBindingType {
        binding?.let {
            isAlreadyBound = true
            binding?.lifecycleOwner = viewLifecycleOwner
            return it as ViewBindingType
        }
        binding = DataBindingUtil.inflate(inflater, layoutResId, container, false)
        binding?.lifecycleOwner = viewLifecycleOwner
        return binding as ViewBindingType
    }

    protected fun setContentView(
            inflater: LayoutInflater,
            container: ViewGroup?,
            @LayoutRes layoutResID: Int
    ): View = inflater.inflate(layoutResID, container, false)
}

抽象类BaseFragment:Fragment（），NavControllerOwner{
受保护的变量绑定：ViewDataBinding？=null
受保护变量isAlreadyBound=false
受保护的val mainActivity:mainActivity？
get（）=活动作为？main活动
覆盖val导航控制器：导航控制器？
get（）=（作为NavControllerOwner的活动）。navController
@抑制（“未选中的_CAST”）
受保护的乐趣集和BindContentView(
充气机，
容器：视图组？，
@LayoutRes layoutResId:Int
)：ViewBindingType{
捆绑？让我来{
isAlreadyBound=true
绑定？.lifecycleOwner=viewLifecycleOwner
将其作为ViewBindingType返回
}
绑定=数据绑定直到充气（充气器、布局器、容器、假）
绑定？.lifecycleOwner=viewLifecycleOwner
以ViewBindingType的形式返回绑定
}
受保护的趣味setContentView(
充气机，
容器：视图组？，
@LayoutRes layoutResID:Int
)：视图=充气机。充气（layoutResID、容器、假）
}

自定义视图：

import android.content.Context
import android.os.Parcelable
import android.text.InputFilter
import android.text.InputFilter.LengthFilter
import android.text.InputType
import android.util.AttributeSet
import android.view.View
import android.widget.FrameLayout
import androidx.annotation.StringRes
import androidx.appcompat.widget.AppCompatEditText
import androidx.databinding.BindingAdapter
import com.google.android.material.textfield.TextInputLayout
import *****.R
import kotlinx.android.parcel.Parcelize
import kotlinx.android.synthetic.main.view_branded_edit_text.view.*

/**
 * Styled edit text.  Use android:inputType for input type, and app:editTextTitle for the title.
 */
class BrandedEditText(context: Context, attrs: AttributeSet) : FrameLayout(context, attrs) {

    val editText: AppCompatEditText
        get() = brandedAppCompatEditText

    val inputLayout: TextInputLayout
        get() = textInputLayout

    init {
        View.inflate(context, R.layout.view_branded_edit_text, this)
        context.theme.obtainStyledAttributes(
                attrs,
                R.styleable.BrandedEditText,
                0, 0
        ).apply {
            title.text = getString(R.styleable.BrandedEditText_editTextTitle)
            brandedAppCompatEditText.inputType = getInt(R.styleable.BrandedEditText_android_inputType, InputType.TYPE_NULL)
            brandedAppCompatEditText.filters = arrayOf<InputFilter>(
                    LengthFilter(getInt(R.styleable.BrandedEditText_maxLength, Int.MAX_VALUE))
            )
            if (getBoolean(R.styleable.BrandedEditText_passwordToggleEnabled, false)) {
                inputLayout.endIconMode = TextInputLayout.END_ICON_PASSWORD_TOGGLE
            }
        }
    }

    fun setMaxLength(maxLength: Int) {
        brandedAppCompatEditText.filters = arrayOf<InputFilter>(
                LengthFilter(maxLength)
        )
    }

    override fun onSaveInstanceState(): Parcelable? = SavedState(super.onSaveInstanceState(), editText.text.toString())

    override fun onRestoreInstanceState(state: Parcelable?) {
        super.onRestoreInstanceState(state)
        editText.setText((state as? SavedState)?.text)
    }

    companion object {
        @JvmStatic
        @BindingAdapter("app:errorText")
        fun setErrorText(view: BrandedEditText, @StringRes textId: Int) {
            if (textId == 0x0) return
            view.inputLayout.error = view.context.getString(textId)
        }
    }

    @Parcelize
    data class SavedState(
            val superStateValue: Parcelable?,
            val text: String?
    ) : BaseSavedState(superStateValue)
}

导入android.content.Context
导入android.os.Parcelable
导入android.text.InputFilter
导入android.text.InputFilter.LengthFilter
导入android.text.InputType
导入android.util.AttributeSet
导入android.view.view
导入android.widget.FrameLayout
导入androidx.annotation.StringRes
导入androidx.appcompat.widget.AppCompatEditText
导入androidx.databinding.BindingAdapter
导入com.google.android.material.textfield.TextInputLayout
进口******.R
导入kotlinx.android.Parcelize.Parcelize
导入kotlinx.android.synthetic.main.view\u branded\u edit\u text.view*
/**
*样式化编辑文本。输入类型使用android:inputType，标题使用app:editTextTitle。
*/
类BrandedEditText（上下文：上下文，属性集）：FrameLayout（上下文，属性集）{
val editText:AppCompativeEditText
get（）=BrandedAppCompativeText
val inputLayout:TextInputLayout
get（）=textInputLayout
初始化{
查看。充气（上下文，右布局。查看\u品牌\u编辑\u文本，此）
context.theme.obtainStyledAttributes(
属性，
R.styleable.BrandedEditText，
0, 0
).申请{
title.text=getString（R.styleable.BrandedEditText\u editTextTitle）
BrandedAppCompativeText.inputType=getInt（R.styleable.BrandedEditText\u android\u inputType，inputType.TYPE\u NULL）
BrandedAppCompativeText.filters=arrayOf(
LengthFilter（getInt（R.styleable.BrandedEditText\u maxLength，Int.MAX\u VALUE））
)
if（getBoolean（R.styleable.BrandedEditText\u passwordToggleEnabled，false））{
inputLayout.endIconMode=TextInputLayout.END\u图标\u密码\u切换
}
}
}
fun setMaxLength（maxLength:Int）{
BrandedAppCompativeText.filters=arrayOf(
长度过滤器（最大长度）
)
}
重写onSaveInstanceState（）：Parcelable？=SavedState（super.onSaveInstanceState（），editText.text.toString（））
覆盖恢复安装状态（状态：可包裹？）{
super.onRestoreInstanceState（状态）
editText.setText（（状态为？SavedState）？.text）
}
伴星{
@JvmStatic
@BindingAdapter（“应用程序：errorText”）
fun setErrorText（视图：BrandedEditText，@StringRes textId:Int）{
if（textId==0x0）返回
view.inputLayout.error=view.context.getString（textId）
}
}
@包裹
数据类存储状态(
val超级状态值：可包裹？，
val文本：字符串？
)：BaseSavedState（超级状态值）
}

我尝试在src/androidTest目录中创建一个具有相同签名的类，这很有帮助。但是，为什么会发生此错误仍然是一个谜。此外，我认为每次发生类似错误时复制相同的代码并不完全正确

import android.content.Context
import android.os.Parcelable
import android.text.InputFilter
import android.text.InputFilter.LengthFilter
import android.text.InputType
import android.util.AttributeSet
import android.view.View
import android.widget.FrameLayout
import androidx.annotation.StringRes
import androidx.appcompat.widget.AppCompatEditText
import androidx.databinding.BindingAdapter
import com.google.android.material.textfield.TextInputLayout
import *****.R
import kotlinx.android.parcel.Parcelize
import kotlinx.android.synthetic.main.view_branded_edit_text.view.*

/**
 * Styled edit text.  Use android:inputType for input type, and app:editTextTitle for the title.
 */
class BrandedEditText(context: Context, attrs: AttributeSet) : FrameLayout(context, attrs) {

    val editText: AppCompatEditText
        get() = brandedAppCompatEditText

    val inputLayout: TextInputLayout
        get() = textInputLayout

    init {
        View.inflate(context, R.layout.view_branded_edit_text, this)
        context.theme.obtainStyledAttributes(
                attrs,
                R.styleable.BrandedEditText,
                0, 0
        ).apply {
            title.text = getString(R.styleable.BrandedEditText_editTextTitle)
            brandedAppCompatEditText.inputType = getInt(R.styleable.BrandedEditText_android_inputType, InputType.TYPE_NULL)
            brandedAppCompatEditText.filters = arrayOf<InputFilter>(
                    LengthFilter(getInt(R.styleable.BrandedEditText_maxLength, Int.MAX_VALUE))
            )
            if (getBoolean(R.styleable.BrandedEditText_passwordToggleEnabled, false)) {
                inputLayout.endIconMode = TextInputLayout.END_ICON_PASSWORD_TOGGLE
            }
        }
    }

    fun setMaxLength(maxLength: Int) {
        brandedAppCompatEditText.filters = arrayOf<InputFilter>(
                LengthFilter(maxLength)
        )
    }

    override fun onSaveInstanceState(): Parcelable? = SavedState(super.onSaveInstanceState(), editText.text.toString())

    override fun onRestoreInstanceState(state: Parcelable?) {
        super.onRestoreInstanceState(state)
        editText.setText((state as? SavedState)?.text)
    }

    companion object {
        @JvmStatic
        @BindingAdapter("app:errorText")
        fun setErrorText(view: BrandedEditText, @StringRes textId: Int) {
            if (textId == 0x0) return
            view.inputLayout.error = view.context.getString(textId)
        }
    }

    @Parcelize
    data class SavedState(
            val superStateValue: Parcelable?,
            val text: String?
    ) : BaseSavedState(superStateValue)
}