I use androidx. In the settings fragment, I want to create the "Preference" buttons and click on them to trigger some individual events.
How can I implement a click listener on a specific Preference?
Thats some my Code:
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.appcompat.widget.Toolbar;
import androidx.preference.PreferenceFragmentCompat;
import androidx.preference.PreferenceManager;
import androidx.preference.PreferenceScreen;
public class SettingsFragment extends PreferenceFragmentCompat {
@Override
public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
addPreferencesFromResource(R.xml.preference);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = super.onCreateView(inflater, container, savedInstanceState);
view.setBackgroundColor(getResources().getColor(R.color.graylight));
Toolbar toolbar = (Toolbar) getActivity().findViewById(R.id.toolbar);
toolbar.setTitle(R.string.action_settings);
toolbar.setLogo(R.drawable.ic_settings_white_24dp);
PreferenceManager preferenceManager = getPreferenceManager();
PreferenceScreen preferenceScreen = getPreferenceScreen();
return view;
}
}
And XML:
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<PreferenceCategory
android:title="@string/setting_person"
app:initialExpandedChildrenCount="0"
app:key="profile_set">
<Preference
android:id="@+id/preference2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:key="button1"
android:summary="@string/setting_person_data"
android:title="@string/setting_person_reg"
app:icon="@drawable/ic_assignment" />
<Preference
android:key="button"
android:summary="@string/setting_avatar"
android:title="@string/setting_avatar_chg"
app:icon="@drawable/ic_wallpaper_black_24dp" />
</PreferenceCategory>
</PreferenceScreen>
As a result, I want to click on the trigger an event in MainActivity. But this is another question, now at least I should get a listen to the event, for example by calling Toast with the key of the button pressed.
After much torment, the solution was found as follows: (for AndroidX)
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.appcompat.widget.Toolbar;
import androidx.preference.Preference;
import androidx.preference.PreferenceFragmentCompat;
public class SettingsFragment extends PreferenceFragmentCompat {
@Override
public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
addPreferencesFromResource(R.xml.preference);
Preference preferenceMap = findPreference("button");
preferenceMap.setOnPreferenceClickListener(
new Preference.OnPreferenceClickListener() {
@Override
public boolean onPreferenceClick(Preference arg0) {
getActivity().onBackPressed();
((MainActivity) getActivity()).injectSetting("map");
return true;
}
});
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = super.onCreateView(inflater, container, savedInstanceState);
view.setBackgroundColor(getResources().getColor(R.color.graylight));
Toolbar toolbar = (Toolbar) getActivity().findViewById(R.id.toolbar);
toolbar.setTitle(R.string.action_settings);
toolbar.setLogo(R.drawable.ic_settings_white_24dp);
return view;
}
}
and in XML androidx.preference is added to the element:
<?xml version="1.0" encoding="utf-8"?>
<androidx.preference.PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<androidx.preference.PreferenceCategory
android:title="@string/setting_person"
app:initialExpandedChildrenCount="1"
app:key="profile_set">
<androidx.preference.Preference
android:id="@+id/preference1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:key="button"
android:summary="@string/setting_person_data"
android:title="@string/setting_person_reg"
app:icon="@drawable/ic_assignment" />
<androidx.preference.Preference
android:id="@+id/preference2"
android:key="button2"
android:summary="@string/setting_avatar"
android:title="@string/setting_avatar_chg"
app:icon="@drawable/ic_wallpaper_black_24dp" />
</androidx.preference.PreferenceCategory>
</androidx.preference.PreferenceScreen>
And do not forget at build.gradle dependencies:
implementation 'androidx.preference:preference:1.1.0'
Maybe someone will need ))