Reside-Menu

Introduction: By applying viewpager animation you can also make AMAZING Reside Menu's
More: Author   ReportBugs   
Tags:

In this project I implemented a menu using view pager. To implement this menu , i use view pager. First and third page are the menu page and second page is our content frame.

When we slide our page , say left to right. when first menu appear. What i have done is.

  • Set the page translation of first page (one with negative position offset) to 0.
  • Resize The content page.
  • Shift the content page to align to parent right.

    PageTransformer is the interface which will control all our transformation.

    ```java public class HorizontalReside implements ViewPager.PageTransformer { @Override public void transformPage(View page, float position) {

     //Hiding those pages which are way off-screen to the left or to the right.
     if (position < -1) {
         page.setAlpha(0);
     } else if (position > 1) {
         page.setAlpha(0);
     } else {
         page.setAlpha(1);
     }
    
    if (page.getId() == R.id.menuFirst){
        //putting fragment to the start of the screen
        page.setTranslationX(-position*page.getWidth());
    }
    else if (page.getId() == R.id.contentPage){
        //when we swipe to left this code applied
        if (position <= 0){
           //for each transformation CODE is mentioned below
        }
        //when we swipe to right this code applied
        else if (position > 0){
          //for each transformation CODE is mentioned below
        }
    }
    else if (page.getId() == R.id.menuSecond){
        //putting fragment to the start of the screen
        page.setTranslationX(-position*page.getWidth());
    }
}

}

In above code **R.id.menuFirst** & **R.id.menuSecond** are left and right menu fragments respectively, so we set them to the start of the screen.

**R.id.contentPage** is the fragment which is always visible to user when the user starts the app. For this we have to code the animation **When the user swipe to left** and **When the user swipe to right**.
Also to show **R.id.contentPage** on top set this fragment parent layout elevation by doing this the fragment comes over the first frgament.
```xml
android:elevation="10dp"

To set R.id.contentPage is always shown to user whenever user starts the app you can use this

viewPager.setCurrentItem(1);

You can download the latest sample APK from Google Play store:

Android app on Google Play

Horizontal Reside Menu

Horizontal Reside Menu GIF

            if (position <= 0){

                //first we do scaling to 50%
                float scale = Math.max(0.6f,1-Math.abs(position));
                page.setScaleX(scale);
                page.setScaleY(scale);

                float deltaWidth = page.getWidth() - scale*page.getWidth();

                //place the fragment to the start of the screen and move the fragment to left
                page.setTranslationX(-position*page.getWidth() - deltaWidth/2);

            }
            //when we swipe to right this code applied
            else if (position > 0){

                //first we do scaling to 50%
                float scale = Math.max(0.6f,1-Math.abs(position));
                page.setScaleX(scale);
                page.setScaleY(scale);

                float deltaWidth = page.getWidth() - scale*page.getWidth();

                //place the fragment to the start of the screen and move the fragment to right
                page.setTranslationX(-position*page.getWidth() + deltaWidth/2);

            }

Vertical Reside Menu

Vertical Reside Menu GIF

            //when we swipe to left this code applied
            if (position <= 0){

                //first we do scaling to 50%
                float scale = Math.max(0.6f,1-Math.abs(position));
                page.setScaleX(scale);
                page.setScaleY(scale);

                float deltaHeight = page.getHeight() - scale*page.getHeight();

                //move the fragment to top
                page.setTranslationY(+deltaHeight/2);

            }
            //when we swipe to right this code applied
            else if (position > 0){

                //first we do scaling to 50%
                float scale = Math.max(0.6f,1-Math.abs(position));
                page.setScaleX(scale);
                page.setScaleY(scale);

                float deltaHeight = page.getHeight() - scale*page.getHeight();

                //move the fragment to bottom
                page.setTranslationY(-deltaHeight/2);

            }

Corner Reside Menu

Corner Reside Menu GIF

            //when we swipe to left this code applied
            if (position <= 0) {

                //first we do scaling to 50%
                float scale = Math.max(0.5f, 1 - Math.abs(position));
                page.setScaleX(scale);
                page.setScaleY(scale);

                float deltaHeight = page.getHeight() - scale * page.getHeight();
                float deltaWidth = page.getWidth() - scale * page.getWidth();

                //move the fragment to top
                page.setTranslationY(+deltaHeight / 2);
                //place the fragment to the start of the screen and move the fragment to left
                page.setTranslationX(-position * page.getWidth() - deltaWidth / 2);

            }
            //when we swipe to right this code applied
            else if (position > 0) {

                //first we do scaling to 50%
                float scale = Math.max(0.5f, 1 - Math.abs(position));
                page.setScaleX(scale);
                page.setScaleY(scale);

                float deltaHeight = page.getHeight() - scale * page.getHeight();
                float deltaWidth = page.getWidth() - scale * page.getWidth();

                //move the fragment to bottom
                page.setTranslationY(-deltaHeight / 2);
                //place the fragment to the start of the screen and move the fragment to right
                page.setTranslationX(-position * page.getWidth() + deltaWidth / 2);

            }
Support Me
Apps
About Me
Google+: Trinea trinea
GitHub: Trinea