ScratchView

This repo is build over https://github.com/sharish/ScratchView

Demo Screen

Methods

• isRevealed() - tells whether the view has been revealed.
• reveal() - reveals the view if not revealed yet.
• mask() - masks the view again and removes the existing scratches.
• setRevealListener(IRevealListener) - a callback listener interface which gets called back when user reveals the view through onReveal() method.

Usage

ScratchView acts as an overlay over other views. Scratching the view makes it transparent so that the views below it are visible. Wrap all the layers in a RelativeLayout and put ScratchView above it.

XML

<com.anupkumarpanwar.scratchview.ScratchView
  android:id="@+id/scratch_view"
  android:layout_width="300dp"
  android:layout_height="300dp"
  app:overlay_image="@drawable/scratch_card"
  app:tile_mode="CLAMP"
  app:overlay_width="300dp"
  app:overlay_height="300dp"
  />

JAVA

ScratchView scratchView = findViewById(R.id.scratch_view);
        scratchView.setRevealListener(new ScratchView.IRevealListener() {
            @Override
            public void onRevealed(ScratchView scratchView) {
                Toast.makeText(getApplicationContext(), "Reveled", Toast.LENGTH_LONG).show();;
            }

            @Override
            public void onRevealPercentChangedListener(ScratchView scratchView, float percent) {
                if (percent>=0.5) {
                    Log.d("Reveal Percentage", "onRevealPercentChangedListener: " + String.valueOf(percent));
                }
            }
        });

Example

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    tools:context=".MainActivity">

    <ImageView
        android:gravity="center"
        android:layout_width="300dp"
        android:layout_height="300dp"
        android:src="@drawable/anup"/>

    <com.anupkumarpanwar.scratchview.ScratchView
        android:id="@+id/scratch_view"
        android:layout_width="300dp"
        android:layout_height="300dp"
        app:overlay_image="@drawable/scratch_card"
        app:tile_mode="CLAMP"
        app:overlay_width="300dp"
        app:overlay_height="300dp"
        />

</RelativeLayout>

Attributes

Attribute	Description	Values
app:overlay_image	The pattern or image to cover the view.	@drawable/scratch_card
app:tile_mode	https://developer.android.com/reference/android/graphics/Shader.TileMode	CLAMP / MIRROR / REPEAT
app:overlay_width	Width of the overlay pattern	300dp
app:overlay_height	Height of the overlay pattern	300dp

Installation

• Add the following configuration in your build.gradle file.

repositories {
    jcenter()
    maven { url "https://jitpack.io" }
}

dependencies {
    implementation 'com.github.AnupKumarPanwar:ScratchView:1.3'
}

Developed By

• Anup Kumar Panwar - 1anuppanwar@gmail.com