How to Add and Customize Back Button of Action Bar in Android?
The action bar (sometimes referred to as the app bar), if it exists for an activity, will be at the top of the activity’s content area, typically directly underneath the status bar. It is a menu bar that runs across the top of the activity screen in android. Android ActionBar can contain menu items that become visible when the user clicks the “menu” button. In general, an ActionBar composed of the following four components:
- App Icon: App branding logo or icon will be shown here
- View Control: A dedicated space to display the Application title. Also provides the option to switch between views by adding spinner or tabbed navigation
- Action Buttons: Major actions of the app could be added here
- Action Overflow: All unimportant action will be displayed as a menu
Below is a sample image to show where the Action Bar/Toolbar/App Bar is present on an android device.
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The action bar is a primary toolbar inside an activity that can be used to display an activity title and other interactive items. One of the most used items is a Back Navigation Button. The back button is used to move backward from the previously visited screen by the user. Most Android devices have a dedicated back button still a back button on the action bar enhances the user experience.
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Buttons
A button consists of text or an icon (or both text and an icon) that communicates what action occurs when the user touches it.
Depending on whether you want a button with text, an icon, or both, you can create the button in your layout in three ways:
- With text, using the Button class:
- With an icon, using the ImageButton class:
- With text and an icon, using the Button class with the android:drawableLeft attribute:
Key classes are the following:
Responding to Click Events
When the user clicks a button, the Button object receives an on-click event.
To define the click event handler for a button, add the android:onClick attribute to the element in your XML layout. The value for this attribute must be the name of the method you want to call in response to a click event. The Activity hosting the layout must then implement the corresponding method.
For example, here’s a layout with a button using android:onClick :
Within the Activity that hosts this layout, the following method handles the click event:
Kotlin
The method you declare in the android:onClick attribute must have a signature exactly as shown above. Specifically, the method must:
- Be public
- Return void
- Define a View as its only parameter (this will be the View that was clicked)
Using an OnClickListener
You can also declare the click event handler programmatically rather than in an XML layout. This might be necessary if you instantiate the Button at runtime or you need to declare the click behavior in a Fragment subclass.
To declare the event handler programmatically, create an View.OnClickListener object and assign it to the button by calling setOnClickListener(View.OnClickListener) . For example:
Kotlin
Styling Your Button
The appearance of your button (background image and font) may vary from one device to another, because devices by different manufacturers often have different default styles for input controls.
You can control exactly how your controls are styled using a theme that you apply to your entire application. For instance, to ensure that all devices running Android 4.0 and higher use the Holo theme in your app, declare android:theme=»@android:style/Theme.Holo» in your manifest’s element. Also read the blog post, Holo Everywhere for information about using the Holo theme while supporting older devices.
To customize individual buttons with a different background, specify the android:background attribute with a drawable or color resource. Alternatively, you can apply a style for the button, which works in a manner similar to HTML styles to define multiple style properties such as the background, font, size, and others. For more information about applying styles, see Styles and Themes.
Borderless button
One design that can be useful is a «borderless» button. Borderless buttons resemble basic buttons except that they have no borders or background but still change appearance during different states, such as when clicked.
To create a borderless button, apply the borderlessButtonStyle style to the button. For example:
Custom background
If you want to truly redefine the appearance of your button, you can specify a custom background. Instead of supplying a simple bitmap or color, however, your background should be a state list resource that changes appearance depending on the button’s current state.
You can define the state list in an XML file that defines three different images or colors to use for the different button states.
To create a state list drawable for your button background:
- Create three bitmaps for the button background that represent the default, pressed, and focused button states.
To ensure that your images fit buttons of various sizes, create the bitmaps as Nine-patch bitmaps.
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Android 10 swap navigation bar menu/back buttons
Breadcrumb
IconBoy
Senior Member
For a good while now, I’ve enjoyed switching the back and menu buttons so the back button is on the right side — seems more intuitive to me — when using the three button option.
Alternatively, if I use the swipe up feature instead, with the pill button. the back button stays on the right.
We’ve updated a Pixel 2 XL to Android 10 and Custom Navigation Bar app doesn’t work.
I also tried running an ADB shell command:
but that didn’t help either on the 2 XL.
My 3 XL hasn’t received the OTA update to Android 10 yet. I was hoping someone might have figured a way to swap the navigation buttons as I’m apprehensive about updating until I can achieve the swap.
Ideas/suggestions anyone.
Thanks.
Tulsadiver
Recognized Contributor
For a good while now, I’ve enjoyed switching the back and menu buttons so the back button is on the right side — seems more intuitive to me — when using the three button option.
Alternatively, if I use the swipe up feature instead, with the pill button. the back button stays on the right.
We’ve updated a Pixel 2 XL to Android 10 and Custom Navigation Bar app doesn’t work.
I also tried running an ADB shell command:
but that didn’t help either on the 2 XL.
My 3 XL hasn’t received the OTA update to Android 10 yet. I was hoping someone might have figured a way to swap the navigation buttons as I’m apprehensive about updating until I can achieve the swap.
Ideas/suggestions anyone.
Thanks.
Depending upon what all else you might be interested in modding, you can flash this to swap your back and recents. You must choose three button mode because in two button mode, only the home button will show. This is a module so you can always delete it or disable it in magisk manager.
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Android menu and back button
Скачать:
версия: 2.2.1 Back Button Pro (Пост sosed.68 #81940115)
версия: 1.9.7 Mod Сообщение №14, автор Евгений Крупецкий
версия: 1.9.11 + Ad-Free Back Button Pro (Пост vitaxa978 #80524644)
версия: 1.4.1 Pro 
backbutton.pro_105.apk ( 1.19 МБ )
Сообщение отредактировал fivestarov — 25.02.19, 12:46
Back Button Pro русская версия: 1.4.1 backbutton.pro_105.Rus.apk ( 1.11 МБ )
Сообщение отредактировал papasha55 — 29.11.16, 20:12
Back_Button-v1.7.4Free Маркет
Что нового:
v1.7.4
— Improvements for reliability and speed.
v1.7.3
— Add Indonesian, Italian, Portuguese, Russian, Spanish, German, Japanese, French, Dutch language translation.
Кнопка «Назад»_1.7.4.apk ( 893.06 КБ )
Версия без рекламы 
Кнопка Назад-v1.7.4No_ads.apk ( 857.26 КБ )
Сообщение отредактировал vitaxa978 — 17.09.16, 11:59
Кнопка_Назад-v1.8.1 Free Маркет
Что нового:
v1.8.0
-fix bugs
— Android 7.0 Support.
Кнопка «Назад»_1.8.1.apk ( 1.92 МБ )
Версия без рекламы Доперевел непереведенное, оставил только рус. и англ. языки Кнопка «Назад»-v1.8.1Rus_No_ads.apk ( 1010.72 КБ )
Сообщение отредактировал vitaxa978 — 24.11.16, 08:04
Еще бы кнопка фиксировалась на экране,чтоб не смахивать ее при скролинге. и размер регулируемый.
Сообщение отредактировал aa494 — 25.11.16, 09:54
Кнопка Назад v1.9.7(3000) MOD
Особенности мода:
— Вырезал загрузку рекламы от Google, а также рекламные активити.
— Удалил все лишние локализации перевода меню, кроме Русского языка.
— Вырезал сбор аналитики.
— Для верности результата избавления от рекламного мусора отрезал программе доступ в интернет.
Ставить начисто, так как была изменена подпись пакета!Кнопка «Назад» v1.9.7(3000) MOD.apk ( 1.05 МБ )
Версия 1.9.9 (Free)
Новое:
— не известно.
Версия 2.2.1 с маркета (free)
Новое:
Remove rocket button.
Fill mode support.
Android O Support.
Remove Interstitial Ads for Google ads policy
All code re-write with kotlin.
This app use accessibility to help peoples with disability use the function of Back, Home, Recents buttons.
Коллеги, есть похожая прога на Андроид 2.2 ?
У меня старый LG-910 с отказавшими сенсорными кнопками на корпусе.
Все ищу похожую, чтобы на жк дисплее управлять своим 4″коммуникатором,
тем более все иконки там рабочие.
Хочу его как навигатор и запасный второй телефон в отпуске использовать.
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