Material Preference

Material theme for preference widgets.

Backporting dat material look and functionality.

Available from API 7. Depends on appcompat-v7 and preference-v7 r23.1.1.

How to get the library?

dependencies {
    compile 'net.xpece.android:support-preference:0.5.3'
}

Screenshots

Library version 0.5.1. Android version 4.4.

                 

Contents

• Preference
• CheckBoxPreference
• SwitchPreference
  • Using SwitchCompat available from API 7
• DialogPreference
  • Uses AppCompat Alert Dialog Material theme
• EditTextPreference
• ListPreference
• MultiSelectListPreference
  • Available since API 7
• SeekBarDialogPreference extends DialogPreference
  • Made public
• SeekBarPreference
  • Made public
  • According to http://www.google.com/design/spec/components/dialogs.html#dialogs-confirmation-dialogs
• RingtonePreference
  • Coerced Ringtone Picker Activity from AOSP
• XpPreferenceFragment
  • Handles proper Preference inflation and DialogPreference dialogs
• SharedPreferencesCompat
  • getStringSet and putStringSet methods allow persisting string sets even before API 11

Features on top of preference-v7

• Material preference item layouts out of the box.
• Icon and dialog icon tinting and padding.
• EditTextPreference understands EditText XML attributes.
• Several preference widgets not publicly available in preference-v7 or SDK.
  • RingtonePreference, SeekBarPreference, SeekBarDialogPreference, MultiSelectListPreference
• Dividers.
• Subscreen navigation implementation.

How to use the library?

Basic setup

Your preference fragment needs to extend XpPreferenceFragment.

Setup your preference items in the following method:

public void onCreatePreferences2(final Bundle savedInstanceState, final String rootKey) {
    // ...
}

Your settings activity theme needs to specify the following values:

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <!-- Used to theme preference list and items. -->
    <item name="preferenceTheme">@style/PreferenceThemeOverlay.Material</item>
    <!-- Default preference icon tint color. -->
    <item name="preferenceTint">@color/accent_state_list</item>
</style>

Styling alertDialogTheme is recommended for a proper color theme. See the sample project.

Dividers

If you want to use dividers, override onRecyclerViewCreated(RecyclerView) in your fragment:

@Override
public void onRecyclerViewCreated(RecyclerView list) {
    list.addItemDecoration(new PreferenceDividerDecoration(getContext()).drawBottom(true));
}

Avoiding bugs

In appcompat-v7 r23.1.1 library there is a bug which prevents tinting of checkmarks in lists. Call Fixes.updateLayoutInflaterFactory(getLayoutInflater()) right after super.onCreate(savedInstanceState) in your Activity.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Fixes.updateLayoutInflaterFactory(getLayoutInflater());
    setContentView(R.layout.activity_settings);
    //...
}

Ringtone picker

RingtonePicker will show only system ringtones/notification sounds by default. If you want to include sounds from the external storage your app needs to request the android.permission.READ_EXTERNAL_STORAGE permission in its manifest. Don't forget to check this runtime permission before opening the picker on API 23.

Handling PreferenceScreen icons

As PreferenceScreen class is final and hardwired into preference system I was unable to automate icon tinting and padding. However you are able to do this yourself:

Preference subs = findPreference("subs_screen");
PreferenceIconHelper subsHelper = new PreferenceIconHelper(subs);
subsHelper.setIconPaddingEnabled(true); // Call this BEFORE setIcon!
subsHelper.setIcon(R.drawable.some_icon);
subsHelper.setTintList(ContextCompat.getColorStateList(getPreferenceManager().getContext(), R.color.accent));
subsHelper.setIconTintEnabled(true);

Subscreen navigation

One solution is implemented in PreferenceScreenNavigationStrategy.ReplaceRoot class. Please review the sample project for an example solution.

XML attributes

• app:asp_tint
• app:asp_tintMode
• app:asp_tintEnabled
• app:asp_iconPaddingEnabled
• app:asp_dialogTint
• app:asp_dialogTintMode
• app:asp_dialogTintEnabled
• app:asp_dialogIconPaddingEnabled

Icon padding

Application icons (48dp x 48dp) require no extra padding. For smaller icons extra padding of 4dp on each side is needed. Achieve this by using app:asp_iconPaddingEnabled and app:asp_dialogIconPaddingEnabled attributes. Icon padding is enabled by default.

Proguard

Since version 0.5.1 Proguard rules are bundled with the library.

Changelog

0.5.3

• FIXED: Ringtone picker does not need READ_EXTERNAL_STORAGE permission even prior to Android 6.

0.5.2 Deprecated

• FIXED: PreferenceScreenNavigationStrategy.ReplaceRoot no longer crashes on screen rotation.
• FIXED: Ringtone picker does not stop playback on screen rotation.

0.5.1 Deprecated

• NEW! PreferenceScreenNavigationStrategy class.
• FIXED: Missing Proguard rules are now bundled with the library.
• FIXED: Incorrect icon size on Lollipop.

0.5.0 Deprecated

• Only supports appcompat-v7 with preference-v7 version 23.1.1 or newer!
• NEW! Based on preference-v7 instead of native preferences.
• Updated appcompat-v7 library to 23.1.1.
  • Material SeekBar style across all platforms.
• RingtonePreference is now DialogFragment based.
• Unmanaged preference icons (such as that of PreferenceScreen) can be tinted via PreferenceIconHelper.
• Default preference icon tint specified by preferenceTint theme attribute.
• Fixed divider color.
• Sample contains PreferenceScreen subscreen handling.

0.4.3

• Last fully supported appcompat-v7 version is 23.0.1. After that ringtone picker crashes!
• No more Resources.NotFoundException in RingtonePickerActivity. Falls back to English.
• Updated appcompat-v7 library to 22.2.1.

0.4.2 Deprecated

• SeekBar tinting can be turned off via app:asp_tintSeekBar="false"
• Introduced missing seekBarDialogPreference style

0.4.1 Deprecated

• Ringtone picker strings are now taken dynamically from android and com.android.providers.media packages, falls back to English
  • These are accessible via RingtonePickerActivity.get*String(Context)

0.4.0 Deprecated

• NEW! Implemented SeekBarPreference according to http://www.google.com/design/spec/components/dialogs.html#dialogs-confirmation-dialogs
• FIXED: tinting/padding in DialogPreference and SeekBarDialogPreference
• AppCompatPreferenceActivity and PreferenceFragment now implement Factory
• NEW! app:asp_dialogIconPaddingEnabled attribute

0.3.0 Deprecated

• Removed MultiCheckPreference as it was only partially implemented and MultiSelectListPreference provides the same function.
• MultiSelectListPreference is now available since API 7 (formerly API 11). Uses JSONArray to persist Set<String>.
• API for persisting and accessing string sets since API 7 is available via SharedPreferencesCompat.
• Preferences now support app:asp_iconPaddingEnabled attribute which allows to better align non-launcher icons to 16dp keyline.
• Custom preferences are now recycled which fixed animation issues on Lollipop.
• Custom preferences are now always inflated on all platforms if using AppCompatPreferenceActivity and/or custom PreferenceFragment.
• Library no longer includes android.permission.READ_EXTERNAL_STORAGE permission (used to read ringtones). You have to do it yourself.
  • This is needed because the custom picker is part of the app and not provided by system.
  • You are of course free to use android.preference.RingtonePreference when necessary.

0.2.2 Deprecated

• optional tinting via app:asp_tintIcon="true" and app:asp_tintDialogIcon="true" and asp_tint and asp_tintMode.

0.2.1 Deprecated

• No need for net.xpece.android.support.preference. prefix in XML files defining preferences, framework will choose automatically:
  • On Lollipop native Preference, CheckBoxPreference, SwitchPreference will be used.
  • Otherwise support version will be used.
  • Force either version by using fully qualified class name.
  • You need to use AppCompatPreferenceActivity or special PreferenceFragment both of which are provided.
• Added PreferenceCompat#setChecked(Preference, boolean) helper method.

0.1.2 Deprecated

• Czech strings
• SeekBar in SeekBarDialogActivity uses ColorFilter to match theme

0.1.1 Deprecated

• Initial release
• Backported material style and icon capability for Preference children
• Backported SwitchPreference
• Material styled RingtonePreference picker dialog/activity

Known issues

• SwitchPreference does not animate its SwitchCompat widget when clicked.
  • https://code.google.com/p/android/issues/detail?id=196652
• MultiSelectListPreference items may be incorrectly tinted on Android 2.
• SeekBarPreference's SeekBar may appear in disabled state until clicked on Android 2.

Questions

• Why are some of your classes in android.support.v7 packages?
  • I'm using their package private features to achieve consistent results.

Credit

Most of this library is straight up pillaged latest SDK mixed with heavy reliance on appcompat-v7. Since version 0.5.0 the same applies to preference-v7. Kudos to the people who create and maintain these!