SwipeBack

Release Note:

0.0.1

support Both LEFT and RIGHT side swipe.
support more callback

How to use:

Add dependency:

   implementation 'com.lovejjfg:swipeback:latestVersion'

Create Your SwipeBackHelper in Layout like this:

   private val swipeBackHelper: SwipeBackHelper =
       SwipeBackHelper(this, object : Callback() {
           override fun onBackReleased() {
               (getContext() as? Activity)?.finish()
           }
       })

Override method:

   override fun onInterceptTouchEvent(ev: MotionEvent?): Boolean {
        return swipeBackHelper.onInterceptTouchEvent(ev) || super.onInterceptTouchEvent(ev)
   }

   override fun onTouchEvent(ev: MotionEvent?): Boolean {
       return swipeBackHelper.onTouchEvent(ev) || super.onTouchEvent(ev)
   }

   override fun dispatchDraw(canvas: Canvas?) {
       super.dispatchDraw(canvas)
       swipeBackHelper.onDispatchDraw(canvas)
   }

Callback Methods:

   /**
    * Callback release when the shape is fully showed.
    */
   fun onBackReleased(type: Int) = Unit

   /**
    * Callback current percent when swipe or release, size change in [0f,1f].
    */
   fun onShapeChange(percent: Float) = Unit

   /**
    * Callback the Shape's color, Default color is FUll BLACK because is's match to the screen border.
    */
   @ColorInt
   fun getShapeColor(): Int = Color.BLACK

   /**
    * Callback the Shape's alpha , Default value is 255.
    */
   @IntRange(from = 0, to = 255)
   fun getShapeAlpha(): Int = SHAPE_DEFAULT_ALPHA

   /**
    * Callback whether change the shape's alpha during swiping, Default is depend on current alpha is full (255).
    */
   fun isShapeAlphaGradient(): Boolean = getShapeAlpha() != SHAPE_DEFAULT_ALPHA

   /**
    * Callback the max peak size of the shape NOTE: it's not a exact value.
    */
   fun getShapeMaxPeak(): Float = 0f

   /**
    * Callback the Arrow color, the Arrow size width and so on are depend on method getShapeMaxPeak(),
    * DEFAULT color is WHITE.
    */
   @ColorInt
   fun getArrowColor(): Int = Color.WHITE

   /**
    * Callback the Edge size DEFAULT is 24dp.
    */
   fun getEdgeSize(): Float = -1F

   /**
    * Callback the support edge swipe side，support EDGE_LEFT EDGE_RIGHT or both.
    */
   @IntRange(from = 1, to = 3)
   fun getEdgeTrackingEnabled(): Int = EDGE_LEFT

PS: It's Kotlin lib, so you should SUPPORT Kotlin at first!

lovejjfg/SwipeBack

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