Hurry to check our newest library that helps to blur the background in Android apps. BlurTutorial highlights the needed UI elements and brings users' attention to the app's parts you're introducing. You can easily apply a blurred view behind the dialog window and context menu, singling out the important elements.
We’ve created the library to help users enhance their app's usability and appearance. BlurTutorial handles both the tasks.
To use BlurTutorial add dependency to your project:
implementation 'com.cleveroad.blur_tutorial:blur_tutorial:1.0.1'The main component of library is the BlurTutorial interface.
/*
Add list of states to tutorial.
*/
fun addAllStates(states: List<TutorialState>)
/*
Add one state to tutorial.
*/
fun addState(state: TutorialState)
/*
Add one state by position.
*/
fun setState(state: TutorialState, index: Int)
/*
Remove state from tutorial.
*/
fun removeState(state: TutorialState)
/*
Clear all states of tutorial.
Cancel tutorial process.
*/
fun clearStates()
/*
Get current state of tutorial.
*/
fun getCurrentState(): TutorialState?
/*
Start tutorial process.
Should be called in [Activity.onResume] or [Fragment.onResume] or later.
If you also highlight action bar menu items,
call it in [Activity.onPrepareOptionsMenu] or [Fragment.onPrepareOptionsMenu] or later.
*/
fun start()
/*
Go to next state of tutorial.
Finish the current state.
*/
fun next()
/*
Interrupt tutorial process.
It can be renewed by calling next() or start()
*/
fun interrupt()
/*
Change configuration of
current [BlurTutorial] instance.
*/
fun configure(): TutorialBuilder
/*
Save state of tutorial.
You must call it in onSaveInstanceState()
of your Fragment or Activity.
*/
fun onSaveInstanceState(outState: Bundle)
/*
Restore state of tutorial.
You must call it in onRestoreInstanceState() of
your Fragment or Activity.
*/
fun onRestoreInstanceState(savedState: Bundle?)
/*
Release resources.
You must call it in onDestroy() of
your Fragment or Activity.
*/
fun onDestroy()TutorialState is an interface, that describes UI item to explain. There are a few data classes, that implement this interface:
- ViewState - describes the View to highlight.
- MenuState - describes the menu item to highlight.
- RecyclerItemState - describes the RecyclerView item to highlight.
- PathState - describes the geometric figure to highlight. By using this state you can highlight a part of view or a part of visible screen area.
To create an instance of BlurTutorial you have to use TutorialBuilder.
| Builder method name | parameter description | is required |
|---|---|---|
| withParent | Root of your layout. Will be blurred or dimmed. | yes |
| withPopupLayout | Layout of popup window. | yes |
| withPopupAppearAnimation | Popup appear animation resource | no |
| withPopupDisappearAnimation | Popup disappear animation resource | no |
| withPopupAppearAnimator | Popup appear animator resource | no |
| withPopupDisappearAnimator | Popup disappear animator resource | no |
| withPopupXOffset | X offset of popup window | no |
| withPopupYOffset | Y offset of popup window | no |
| withPopupCornerRadius | Radius of popup corners | no |
| withBlurRadius | Radius of blur. Must be in a range (0.0; 25.0]. By default, it's 10.0 | no |
| withOverlayColor | Color of overlay, that will be displayed above blurred or dimmed background. | no |
| withHighlightType | Type of highlight: Blur or Dim. By default, it's Blur. | no |
| withListener | Listener of tutorial process | yes |
Also you have to set listener of tutorial process:
interface TutorialListener {
/*
Called before state is entered.
Use it to prepare UI for view highlighting.
E.g. smoothly scroll to this view.
*/
override fun onStateEnter(state: TutorialState)
// Called after state exit.
override fun onStateExit(state: TutorialState)
// Called on state error. E.g. highlighted view is not visible, etc.
override fun onStateError(state: TutorialState, error: StateException)
/*
Called when popup view is inflated.
Use this method to populate your popup view.
*/
override fun onPopupViewInflated(state: TutorialState, popupView: View)
// Called when tutorial process is finished.
override fun onFinish()
}companion object {
private const val VIEW_ID = 0
private const val MENU_ITEM_ID = 1
private const val RECYCLER_ITEM_ID = 2
private const val PATH_ID = 3
private const val RECYCLER_ITEM_INDEX = 10
...
}
...
private val path = Path().apply {
addCircle(500F, 500F, 300F, Path.Direction.CCW)
}
private val states by lazy {
listOf(ViewState(VIEW_ID, tvHighlight),
MenuState(MENU_ITEM_ID, tbMenuOwner, R.id.menu_item),
RecyclerItemState(RECYCLER_ITEM_ID, rvOwner, RECYCLER_ITEM_INDEX),
PathState(PATH_ID, path)
}
private var tutorial: BlurTutorial? = null
private val tutorialListener = object : SimpleTutorialListener() {
override fun onPopupViewInflated(state: TutorialState, popupView: View) {
popupView.run {
val tvTitle = findViewById<TextView>(R.id.tvTitle)
tvTitle.textResource = when (state.id) {
VIEW_ID -> R.string.view_title
MENU_ITEM_ID -> R.string.menu_title
RECYCLER_ITEM_ID -> R.string.recycler_title
PATH_ID -> R.string.path_state
}
setOnClickListener { tutorial?.next() }
}
}
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
initTutorial()
}
override fun onResume() {
super.onResume()
tutorial?.start()
}
override fun onSaveInstanceState(outState: Bundle) {
super.onSaveInstanceState(outState)
tutorial?.onSaveInstanceState(outState)
}
override fun onViewStateRestored(savedInstanceState: Bundle?) {
super.onViewStateRestored(savedInstanceState)
tutorial?.onRestoreInstanceState(savedInstanceState)
}
override fun onDestroy() {
tutorial?.onDestroy()
super.onDestroy()
}
private fun initTutorial() {
tutorial = TutorialBuilder()
.withParent(clParent)
.withListener(tutorialListener)
.withPopupLayout(R.layout.popup_window)
.withPopupCornerRadius(POPUP_RADIUS)
.withBlurRadius(BLUR_RADIUS)
.build().apply { addAllStates(states) }
}Also depending on your Proguard config, you have to setup your proguard-rules.pro file:
-keepclassmembers class androidx.appcompat.widget.Toolbar { *; }
-keep class com.google.android.material.bottomnavigation.BottomNavigationView
-keepclassmembers class com.google.android.material.bottomnavigation.BottomNavigationView { *; }
-keep class com.google.android.material.bottomnavigation.BottomNavigationItemView
-keepclassmembers class com.google.android.material.bottomnavigation.BottomNavigationItemView { *; }
-keep class androidx.appcompat.view.menu.MenuItemImpl
-keepclassmembers class androidx.appcompat.view.menu.MenuItemImpl { *; }
-keep class com.google.android.material.navigation.NavigationView
-keepclassmembers class com.google.android.material.navigation.NavigationView { *; }
-keep class com.google.android.material.internal.NavigationMenuPresenter** { *; }
-keepclassmembers class com.google.android.material.internal.NavigationMenuPresenter { *; }
-keep class com.google.android.material.bottomappbar.BottomAppBar
-keepclassmembers class com.google.android.material.bottomappbar.BottomAppBar { *; }
The MIT License (MIT)
Copyright (c) 2016 Cleveroad Inc.
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SOFTWARE.