EditTextPreference - only numeric value inputType - isn't working

Question

<android.support.v7.preference.EditTextPreference
            android:key="prefTest"
            android:title="test number input"
            android:inputType="numberDecimal|numberSigned"
            android:defaultValue="800"/>

It still shows regular keyboard and allows me to type any character

Is there something wrong with android.support.v7?

Answer 1

For androidx library i used

    val preference = findPreference("pref_key") as EditTextPreference?
    
    preference!!.setOnBindEditTextListener { 
            editText -> editText.inputType = InputType.TYPE_CLASS_NUMBER or InputType.TYPE_NUMBER_FLAG_SIGNED
    }

inside onCreatePreferences function for PreferenceFragmentCompat

Answer 2

The Customize your settings section in the developer guide for settings recommends that you set the input type programmatically by using an OnBindEditTextListener as follows:

public class SettingsFragment extends PreferenceFragmentCompat {
    @Override
    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
        setPreferencesFromResource(R.xml.settings_screen, rootKey);

        EditTextPreference weeklyGoalPref = findPreference("weekly_goal");
        if (weeklyGoalPref != null) {
            weeklyGoalPref.setOnBindEditTextListener(new EditTextPreference.OnBindEditTextListener() {
                @Override
                public void onBindEditText(@NonNull EditText editText) {
                    editText.setInputType(InputType.TYPE_CLASS_NUMBER);
                }
            });
        }
    }
}

I tried defining the input type as "number" in xml and still got the normal keyboard with letters. This approach worked for me.

Answer 3

android:digits="0123456789"

use this in edittext as it accepts only defined numbers. if its not working then use Android-Support-Preference-V7-Fix library.

Fixed EditTextPreference forwards the XML attributes (like inputType) to the EditText, just like the original preference did.

Answer 4

I agree that original support preferences has some issues, but for resolving this issue we just need add custom layout and specify EditText with android:inputType="number"

<android.support.v7.preference.EditTextPreference
            android:dialogLayout="@layout/preference_dialog_edittext_custom"

So that you may copy original preference_dialog_layout.xml file and edit it.

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginTop="48dp"
    android:layout_marginBottom="48dp"
    android:overScrollMode="ifContentScrolls">

  <LinearLayout
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_marginStart="24dp"
      android:layout_marginEnd="24dp"
      android:orientation="vertical">

    <TextView android:id="@android:id/message"
        style="?android:attr/textAppearanceSmall"
        android:layout_marginBottom="48dp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textColor="?android:attr/textColorSecondary" />

    <EditText
        android:id="@android:id/edit"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="number"
        android:layout_marginStart="-4dp"
        android:layout_marginEnd="-4dp" />

  </LinearLayout>

</ScrollView>