Draggable XML Layout

There are TWO usage of this library.

1. DraggableFrameLayout
2. DraggableScrollViewLayout

Use DraggableFrameLayout for your activities that does not contain any scrollable content! (Story, Image, etc.)

Use DraggableScrollViewLayout for your activities that contain scrollable content! (Look for the second gif)

Java example can be found here: Class / XML

Installation

implementation "com.github.denizavsar:DraggableLayout:5.1.1"

Usage

Add android:theme="@style/Draggable.NoActionBar" on your activity decleration on AndroidManifest.xml

<activity
    android:name=".MainActivity"
    android:theme="@style/Draggable.NoActionBar" />

Add overridePendingTransition(R.anim.draggable_enter_animation, 0) before super.onCreate(savedInstanceState) on your activity class

override fun onCreate(savedInstanceState: Bundle?) {
    overridePendingTransition(R.anim.draggable_enter_animation, 0)
    super.onCreate(savedInstanceState)
}

You can merge Draggable styles (Draggable.NoActionBar, Draggable.FullScreen) with your own styles on styles.xml

<style name="StoryScreen" parent="Draggable.FullScreen">
    <item name="colorPrimary">@color/primary_color</item>
    <item name="colorPrimaryDark">@color/primary_color_dark</item>
    <item name="colorAccent">@color/accent_color</item>
    <!-- more items -->
</style>

and use it like on your AndroidManifest.xml

<activity
    android:name=".MainActivity"
    android:theme="@style/StoryScreen" />

IMPORTANT 1

If you are going to use Draggable.FullScreen style, you should put that code in your onCreate method before the setContentView(...)

override fun onCreate(savedInstanceState: Bundle?) {
    overridePendingTransition(R.anim.draggable_enter_animation, 0)
    super.onCreate(savedInstanceState)
    
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        window.decorView.systemUiVisibility = (View.SYSTEM_UI_FLAG_LAYOUT_STABLE or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN)
    }
    
    setContentView(R.layout.activity_main)
}

IMPORTANT 2

If you use ViewPager (or something like listen to left and right swipe events) inside DraggableLayout, you should only enable moveable directions (top and bottom) with app:draggableDirections="top|bottom" to prevent the DraggableLayout catch the left and right swipe events!

DraggableFrameLayout

This xml layout is suitable for instagram like stories swipe down to close feature. draggableDirections is set to bottom so you can only start the drag operation with hold and swipe down gesture

<com.deniz.draggablelibrary.DraggableFrameLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/root"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="center"
    app:draggableCorners="topLeft|topRight"
    app:draggableMaxCornerRadius="40dp"
    app:draggableScaleFactor="0.5"
    app:draggableDirections="bottom">

</com.deniz.draggablelibrary.DraggableFrameLayout>

Example: Class / XML

DraggableScrollViewLayout

This xml layout is for activities that contain scrollable content. Just wrap your ScrollView with DraggableScrollViewLayout!

<com.deniz.draggablelibrary.DraggableScrollViewLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:draggableCorners="all"
    app:draggableDirections="all"
    app:draggableMaxCornerRadius="50dp"
    app:draggableMinCornerRadius="5dp">
    
    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    
    </ScrollView>

</com.deniz.draggablelibrary.DraggableScrollViewLayout>

Example: Class / XML

You are ready to go!

Detailed Usage

• Listeners

// DraggableFrameLayout - DragListener

val root = findViewById<DraggableFrameLayout>(R.id.root)

root.setDragListener(object : DraggableFrameLayout.DragListener {
    override fun onDragStarted(rawX: Float, rawY: Float) {
        // DO YOUR WORK HERE
    }

    override fun onDrag(rawX: Float, rawY: Float, touchDeltaX: Float, touchDeltaY: Float) {
        // DO YOUR WORK HERE
    }

    override fun onDragFinishing(distance: Float) {
        // DO YOUR WORK HERE
    }

    override fun onDragFinished() {
        // DO YOUR WORK HERE
    }
})

// DraggableScrollViewLayout - ScrollListener

val layout = findViewById<DraggableScrollViewLayout>(R.id.root)

layout.setScrollListener(object : DraggableScrollViewLayout.ScrollListener {
    override fun onScrollStarted(rawX: Float, rawY: Float) {
        // DO YOUR WORK HERE
    }

    override fun onScroll(scrollX: Int, scrollY: Int) {
        // DO YOUR WORK HERE
    }

    override fun onScrollFinished() {
        // DO YOUR WORK HERE
    }
})

• Xml Attributes

draggableMinCornerRadius

Usage       : app:draggableMinCornerRadius="15dp"
Default     : 0F
Format      : dimension
Limitations : draggableMinCornerRadius >= 0F
Explanation : See 'draggableCorners' attribute

draggableMaxCornerRadius

Usage       : app:draggableMaxCornerRadius="40dp"
Default     : 0F
Format      : dimension
Limitations : draggableMaxCornerRadius >= draggableMinCornerRadius
Explanation : See 'draggableCorners' attribute

draggableDetectionAngle (Only works with DraggableFrameLayout)

Usage       : app:draggableDetectionAngle="45"
Default     : 90F
Format      : float
Limitations : 0 <= draggableDetectionAngle <= 90

draggableBackgroundColor

Usage       : app:draggableBackgroundColor="@color/black"
Default     : #000000
Format      : color
Limitations : -

draggableBackgroundOpacityMin

Usage       : app:draggableBackgroundOpacityMin="100"
Default     : 70F
Format      : float
Limitations : draggableBackgroundOpacityMin >= 0

draggableBackgroundOpacityMax

Usage       : app:draggableBackgroundOpacityMax="155"
Default     : 255F
Format      : float
Limitations : draggableBackgroundOpacityMax >= draggableBackgroundOpacityMin

draggableTransparentBackground

Usage       : app:draggableTransparentBackground="true"
Default     : false
Format      : boolean
Limitations : -
Explanation : If true, draggableBackgroundOpacityMin and draggableBackgroundOpacityMax is useless

draggableScaleFactor

Usage       : app:draggableScaleFactor="0.5"
Default     : 0.6F
Format      : float
Limitations : 0.1 <= draggableScaleFactor <= 1.0
Explanation : Higher factor means less scale | (1.0 = no scale) , (0.1 = highest scale)

draggableScaleEnabled

Usage       : app:draggableScaleEnabled="true"
Default     : true
Format      : boolean
Limitations : -
Explanation : If false, draggableScaleFactor is useless

draggableExitAnimation

Usage       : app:draggableExitAnimation="@anim/alpha_out_animation"
Default     : R.anim.draggable_exit_animation
Format      : reference
Limitations : -

draggableFinishOffset

Usage       : app:draggableFinishOffset="100dp"
Default     : 0F
Format      : dimension
Limitations : -

draggableCorners

Usage       : app:draggableCorners="topLeft|topRight"
Default     : none
Format      : flag
Limitations : none - topLeft - topRight - bottomLeft - bottomRight - all
Explanation : Determine the corners that will have radius with drag event

draggableDirections

Usage       : app:draggableDirections="bottom"
Default     : none
Format      : flag
Limitations : none - top - bottom - left - right - all
Explanation : Determine the layout moveable directions

draggableDistanceAxis

Usage       : app:draggableDistanceAxis="y"
Default     : all
Format      : flag
Limitations : none - x - y - all
Explanation : Determine which axis should be used for distance calculation

• In Class Attributes

val layout = findViewById<DraggableScrollViewLayout>(R.id.root)

layout.setConfig()
            .setMinCornerRadius(15)
            .setMaxCornerRadius(35)
            .setTransparentBackground(false)
            .setBackgroundColorOpacityMin(70F)
            .setBackgroundColorOpacityMax(200F)
            .setScaleEnabled(true)
            .setScaleFactor(0.6)
            .setFinishOffset(60F)
            .apply()

Examples

Instagram Story -> Class / XML

ScrollView -> Class / XML

Image Display -> Class / XML

Bottom Sheet -> Class / XML

You can clone this project for the detailed examples and usages of draggable layout

Contributing

Pull requests are welcome.

For major changes, please open an issue first to discuss what you would like to change.

License

MIT License

Copyright (c) 2020 Fırat Deniz Avşar, Connected2.me

Permission is hereby granted, free of charge, to any person obtaining a copy
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copies of the Software, and to permit persons to whom the Software is
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copies or substantial portions of the Software.

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