EditTextPreference not showing numeric keyboard after migrating project to androidx

Question

After migrating my project to AndroidX using the Migrate to AndroidX... functionality provided by Android Studio and having made changes to my dependencies accordingly to have everything running like it is supposed to, I have encountered a minor problem which I haven't been able to resolve.

To set a device number in my application I used an EditTextPreference like the following defined in my pref_screen.xml which is set in a PreferenceFragmentCompat class with setPreferencesFromResource(R.xml.pref_screen, string):

<EditTextPreference
            android:icon="@drawable/ic_perm_device_information_black_24dp"
            android:inputType="number"
            android:key="change_device_id"
            android:maxLines="1"
            android:selectAllOnFocus="true"
            android:singleLine="true"
            android:summary="@string/settings_device_id"
            android:title="@string/pref_title_change_device_id" />

It used to show a numeric keyboard to change the value but after migrating to AndroidX it keeps showing a normal keyboard as shown in the image below. I tried changing the inputType and defining the decimals in xml but to no avail. Has something changed to set the inputType for the keyboard after migrating to AndroidX or am I missing something obvious?

android:inputType="numberDecimal"
android:digits="0123456789"

Answer 1

Google has not fixed this yet. You can use takisoft's fix for this problem:

https://bintray.com/takisoft/android/com.takisoft.preferencex%3Apreferencex/1.0.0

Add to build.gradle (project):

buildscript {
    ...
    repositories {
        maven {
            url  "https://dl.bintray.com/takisoft/android"
        }
    }
    ....
}

Add to build.gradle (app module):

implementation 'com.takisoft.preferencex:preferencex:1.0.0'

Change the imports in your classes and the components in your XML resources:

androidx.preference.EditTextPreference -> com.takisoft.preferencex.EditTextPreference
androidx.preference.PreferenceCategory -> com.takisoft.preferencex.PreferenceCategory
androidx.preference.PreferenceFragmentCompat -> com.takisoft.preferencex.PreferenceFragmentCompat

In your PreferenceFragmentCompat subclass, change the onCreatePreferences(...) declaration to onCreatePreferencesFix(...).

... and voila! The old parameters, like numeric and singleLine will be back and work!

Answer 2

[Solved]

Add to build.gradle (app module):

implementation 'androidx.preference:preference:1.1.0-rc01'

Answer 3

From an answer here: https://stackoverflow.com/a/55461028/7059947

Cast your Preference to EditTextPreference and use setInputType On Bind. This saved my day :)

            EditTextPreference edpPrefernce = (EditTextPreference) pPreference;

            edpPrefernce.setOnBindEditTextListener(new EditTextPreference.OnBindEditTextListener() {
                @Override
                public void onBindEditText(@NonNull EditText editText) {

                    editText.setInputType(InputType.TYPE_CLASS_NUMBER);
                }
            });