片段内的微调器onItemSelectedListener无法正常工作

Question

在片段上使用微调器似乎一切都很好，但是当我添加EditText并在EditText中设置焦点时，微调器侦听器将不会响应...

我尝试了很多事情，例如更改微调器数据，删除所有破坏性代码，更改布局。

<FrameLayout
            android:orientation="horizontal"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" android:background="@drawable/button_orange"
            android:layout_marginBottom="10dp" android:layout_marginTop="10dp">

        <androidx.appcompat.widget.AppCompatSpinner
                android:layout_width="wrap_content"
                android:layout_height="match_parent" android:id="@+id/spinnerCountries"
                android:spinnerMode="dropdown" android:layout_margin="5dp"/>
    </FrameLayout>
    <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:layout_marginRight="10dp">

        <FrameLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent" android:background="@color/white"/>

        <com.google.android.material.textfield.TextInputLayout
                android:id="@+id/input_layout_phone"
                style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:textColorHint="@color/orange">

            <com.google.android.material.textfield.TextInputEditText
                    android:id="@+id/input_phone"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:inputType="phone"
                    android:hint="@string/hint_phone_number"
                    android:importantForAutofill="noExcludeDescendants"
                    android:maxLength="20"
                    android:drawableRight="@mipmap/icon_help_phone"
                    android:textColor="@color/orange"
                    tools:ignore="UnusedAttribute" android:background="@null" android:fitsSystemWindows="true"/>
        </com.google.android.material.textfield.TextInputLayout>
</FrameLayout>

mSpinnerCountries!!.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
            override fun onItemSelected(arg0: AdapterView<*>, arg1: View, position: Int, arg3: Long) {
                prefs!!["country_position"] = position
                val mSelectedCountry = arg0.selectedItem as Pays?

                prefs!!["user_countrycode"] = mSelectedCountry?.code
                prefs!!["carrier_countryiso"] = mSelectedCountry?.iso
                prefs!!["country_prefix"] = mSelectedCountry?.prefix

                Timber.d("Item selected on spinner : code ${mSelectedCountry?.code}, iso ${mSelectedCountry?.iso}, prefix ${mSelectedCountry?.prefix}")
                mEditText!!.text!!.clear()
                mEditText!!.text!!.clearSpans()
                mEditText!!.setText(mSelectedCountry?.prefix)
                mEditText!!.setSelection(mSelectedCountry?.prefix!!.length)
            }

            override fun onNothingSelected(arg0: AdapterView<*>) {
                val mSelectedCountry = arg0.selectedItem as Pays?
                prefs!!["user_countrycode"] = mSelectedCountry?.code
                prefs!!["carrier_countryiso"] = mSelectedCountry?.iso
                prefs!!["country_prefix"] = mSelectedCountry?.prefix

                Timber.d("No Item selected on spinner : code ${mSelectedCountry?.code}, iso ${mSelectedCountry?.iso}, prefix ${mSelectedCountry?.prefix}")
                mEditText!!.setText(mSelectedCountry?.prefix)
                mEditText!!.setSelection(mSelectedCountry?.prefix!!.length+1)
            }
        }

现在，即使在集中编辑文本之后，我也希望能够使用微调监听器。

Answer 1

您发布的代码可以正常工作。

能否请您创建一个非常简单的项目并将此行添加到该项目中，然后检查是否一切正常？如果以下代码可用于您的简单项目，我们可以进一步调试您的主项目。如果这不起作用，则您的设备可能有问题。

  

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="match_parent"
    android:layout_width="match_parent"
    xmlns:tools="http://schemas.android.com/tools">
    <FrameLayout
        android:orientation="horizontal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:background="@mipmap/ic_launcher"
        android:layout_marginBottom="10dp" android:layout_marginTop="10dp">

        <androidx.appcompat.widget.AppCompatSpinner
            android:layout_width="wrap_content"
            android:layout_height="match_parent" android:id="@+id/spinnerCountries"
            android:spinnerMode="dropdown" android:layout_margin="5dp"/>
    </FrameLayout>
    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:layout_marginRight="10dp">

        <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent" android:background="@android:color/white"/>

        <com.google.android.material.textfield.TextInputLayout
            android:id="@+id/input_layout_phone"
            style="@style/Widget.MaterialComponents.TextInputLayout.OutlinedBox"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textColorHint="@android:color/holo_orange_dark">

            <com.google.android.material.textfield.TextInputEditText
                android:id="@+id/input_phone"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:inputType="phone"
                android:hint="phone number"
                android:importantForAutofill="noExcludeDescendants"
                android:maxLength="20"
                android:drawableRight="@mipmap/ic_launcher"
                android:textColor="@android:color/holo_orange_dark"
                tools:ignore="UnusedAttribute" android:background="@null" android:fitsSystemWindows="true"/>
        </com.google.android.material.textfield.TextInputLayout>
    </FrameLayout>
</LinearLayout>

  

MainActivity.kt

class MainActivity: AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val adapter = ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, Arrays.asList("a","b","c"))
        spinnerCountries.adapter =adapter

        spinnerCountries!!.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
            override fun onItemSelected(arg0: AdapterView<*>, arg1: View, position: Int, arg3: Long) {
                input_phone!!.text!!.clear()
                input_phone!!.text!!.clearSpans()
                input_phone!!.setText(adapter.getItem(position))
                input_phone!!.setSelection(adapter?.getItem(position)!!.length)
            }

            override fun onNothingSelected(arg0: AdapterView<*>) {


            }
        }
    }
}