Android PagerSlidingTabStrip (default Material Design)

Interactive paging indicator widget, compatible with the ViewPager from the Android Support Library.

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Usage

For a working implementation of this project see the sample/ folder.

1. Include the following dependency in your build.gradle file.

compile 'com.jpardogo.materialtabstrip:library:1.1.1'

Or add the library as a project. I tried to send a pull request, but looks like the original developer doesn't maintain it anymore.

2. Include the PagerSlidingTabStrip widget in your layout. This should usually be placed above the ViewPager it represents.

<com.astuetz.PagerSlidingTabStrip
    android:id="@+id/tabs"
    android:layout_width="match_parent"
    android:layout_height="?attr/actionBarSize"
    android:background="?attr/colorPrimary" />

3. In your onCreate method (or onCreateView for a fragment), bind the widget to the ViewPager:

// Initialize the ViewPager and set an adapter
ViewPager pager = (ViewPager) findViewById(R.id.pager);
pager.setAdapter(new TestAdapter(getSupportFragmentManager()));

// Bind the tabs to the ViewPager
PagerSlidingTabStrip tabs = (PagerSlidingTabStrip) findViewById(R.id.tabs);
tabs.setViewPager(pager);

That's all you need to do, but if you want to use your own tabs, then...

1. If your adapter implements the interface CustomTabProvider you can paste your custom tab view/s.

   • In case the the view returned contains the id R.id.psts_tab_title, this view should be a TextView and will be used to placed the title and set the view state (pressed/selected/default).

   • If you don't want the library manage your TextView title for the tab, use a different id than R.id.psts_tab_title in your tab layout.

   • The interface provide callbacks for selection and unselection of tabs as well.

   • If your adapter doesn't implement the interface CustomTabProvider the default tab will be used, which is a TextView with id R.id.psts_tab_title).

2. (Optional) If you use an OnPageChangeListener with your view pager you should set it in the widget rather than on the pager directly.

// continued from above
tabs.setOnPageChangeListener(mPageChangeListener);

Customization

From theme:

• android:textColorPrimary value (from your theme) will be applied automatically to the tab's text color (Selected tab with 255 alpha and non selected tabs with 150 alpha), underlineColor, dividerColor and indicatorColor, if the values are not defined on the xml layout.

Notes about some of the native attributes:

• android:paddingLeft or android:paddingRight layout padding. If you apply both, they should be balanced. Check issue #69 for more information.

Custom attributes:

• pstsIndicatorColor Color of the sliding indicator. textColorPrimary will be it's default color value.
• pstsIndicatorHeightHeight of the sliding indicator.
• pstsUnderlineColor Color of the full-width line on the bottom of the view. textColorPrimary will be it's default color value.
• pstsUnderlineHeight Height of the full-width line on the bottom of the view.
• pstsDividerColor Color of the dividers between tabs. textColorPrimary will be it's default color value.
• pstsDividerWidth Stroke width of divider line, defaults to 0.
• pstsDividerPadding Top and bottom padding of the dividers.
• pstsShouldExpand If set to true, each tab is given the same weight, default false.
• pstsScrollOffset Scroll offset of the selected tab.
• pstsPaddingMiddle If true, the tabs start at the middle of the view (Like Newsstand google app).
• pstsTabPaddingLeftRight Left and right padding of each tab.
• pstsTabBackground Background drawable of each tab, should be a StateListDrawable.
• pstsTabTextSize Tab text size (sp).
• pstsTabTextColor Tab text color that can either be a color (text color won't changed) or a selector with a color per state: pressed (tab pressed), selected (tab active), default (active non active). The order of states in the selector is important. Check issue #68 for more information.
• pstsTabTextStyle Set the text style, default normal on API 21, bold on older APIs.
• pstsTabTextAllCaps If true, all tab titles will be upper case, default true.
• pstsTabTextAlpha Set the text alpha transparency for non selected tabs. Range 0..255. 150 is it's default value. It WON'T be used if pstsTabTextColor is defined in the layout. If pstsTabTextColor is NOT defined, It will be applied to the non selected tabs.
• pstsTabTextFontFamily Set the font family name. Default sans-serif-medium on API 21, sans-serif on older APIs.

Almost all attributes have their respective getters and setters to change them at runtime. To change dynamically pstsTabTextFontFamily and pstsTabTextStyle you can call:

• public void setTypeface(Typeface typeface, int style). It can be used to define custom fonts in default tabs. Otherwise you can use custom tabs with CustomTabProvider.

Please open an issue if you find any are missing.

Developed By

• Javier Pardo de Santayana Gomez - jpardogo.com - jpardogo@gmail.com
• Andreas Stuetz - andreas.stuetz@gmail.com
• And contributors.

Contributions

• Please, read the README file before opening an issue, thanks.
• Please, all the Pull Request must be sent to the dev branch, thanks..

Credits

• Kirill Grouchnikov - Author of an explanation post on Google+

License

Copyright 2013 Andreas Stuetz

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.