UX Design involving scratch cards like views which are scratched

ScratchView

• ScratchView repo is UX Design involving scratch cards like views which are scratched to reveal the information they conceal. There are two types of ScratchView

ScratchRelativeLayoutView

• A Child of RelativeLayout which conceals a relative layout. Scratching over the view will reveal the hidden RelativeLayout. Also the scratch-able view is a RelativeLayout.

ScratchImageView

• A Child of ImageView which conceals the image. Scratching over the view will reveal the hidden image.

ScratchTextView

• A Child of TextView which conceals the text. Scratching over the view will reveal the hidden text.

Demo Screen

ScratchImageView	ScratchTextView	ScratchRelativeLayoutView

Useful Methods

Both the views have following three methods which are useful to reveal or determine whether revealed and listener during revealing the hidden text/image.

• isRevealed() - tells whether the text/image has been revealed.
• reveal() - reveals the image/text if not revealed yet.
• setRevealListener(IRevealListener) - a callback listener interface which gets called back when user reveals the text/image
  through onReveal() method.

Usage

ScratchRelativeLayoutView

XML

<com.goibibo.libs.views.ScratchRelativeLayoutView
        android:id="@+id/lytScratch"
        android:layout_width="300dp"
        android:layout_height="300dp"
        android:layout_centerInParent="true"
        android:background="@android:color/white">

        <include layout="@layout/lyt_hidden"/>

</com.goibibo.libs.views.ScratchRelativeLayoutView>

JAVA

ScratchRelativeLayoutView scratchRelativeLayoutView = findViewById(R.id.lytScratch);
scratchRelativeLayoutView.setStrokeWidth(20);
scratchRelativeLayoutView.setScratchView(R.layout.lyt_scratch); // scratchable layout
scratchRelativeLayoutView.setRevealListener(new ScratchRelativeLayoutView.IRevealListener() {
   @Override
   public void onRevealed(ScratchRelativeLayoutView tv) {
     // on reveal
   }

   @Override
   public void onRevealPercentChangedListener(ScratchRelativeLayoutView siv, float percent) {
     // on percent change
   }
});

ScratchImageView

XML

<com.goibibo.libs.views.ScratchImageView
  android:id="@+id/sample_image"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:background="@android:color/white"
  android:src="@drawable/img_sample2"
  />

JAVA

ScratchImageView scratchImageView = new ScratchImageView(this);

scratchImageView.setRevealListener(new ScratchImageView.IRevealListener() {
    @Override
    public void onRevealed(ScratchImageView tv) {
        // on reveal
    }

    @Override
    public void onRevealPercentChangedListener(ScratchImageView siv, float percent) {
        // on image percent reveal
    }
});

ScratchTextView

XML

<com.goibibo.libs.views.ScratchTextView
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:gravity="center|end"
  android:text="@string/flat_200"
  android:textSize="15sp"
  android:textStyle="bold" />

JAVA

ScratchTextView scratchTextView = new ScratchTextView(this);

scratchTextView.setRevealListener(new ScratchTextView.IRevealListener() {
    @Override
    public void onRevealed(ScratchTextView tv) {
        //on reveal
    }


    @Override
    public void onRevealPercentChangedListener(ScratchTextView stv, float percent) {
        // on text percent reveal
    }
});

Adding to your project

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

repositories {
    jcenter()
}

dependencies {
    implementation 'com.goibibo.libs:scratchcardview:0.1.4'
}

GitHub