CODEWITHSUNDEEP
androidanimation
Mohammadhossein.Saeb.Shabani
Mohammadhossein.Saeb.Shabani

Reputation: 83

How to change android background every ??? seconds?

I want to change my Relative layout's background every 10 seconds with fade in/fade out animation. So I found 

//Transitiondrawable
TransitionDrawable transition = (TransitionDrawable) viewObj.getBackground();
transition.startTransition(transitionTime);

But it supports only 2 Drawable and I want to add more Is there any way to do this?

Upvotes: 0

Views: 991

Answers (2)

Tharindu Welagedara
Tharindu Welagedara

Reputation: 2725

First implement MyAnim.java class as below:

public class MyAnim extends Animation {


    private final RelativeLayout view;
    private int targetBackGround;


    public MyAnim(RelativeLayout view, int tagetBackGroundColor) {
        this.view = view;
        this.targetBackGround = tagetBackGroundColor;
    }
    @Override
    protected void applyTransformation(float interpolatedTime, Transformation t) {
        super.applyTransformation(interpolatedTime, t);
        view.setBackgroundColor(targetBackGround);
    }


    public void setColor(int color) {
        this.targetBackGround = color;
    }
}

Then add below code to your activity and call that animateBackground() method wherever you want:

    private MyAnim backgroundAnim;
    private int i;

    private void animateBackground(){
        final RelativeLayout animLay = (RelativeLayout) findViewById(R.id.animLay);
        final int colors[] = new int[]{Color.RED, Color.CYAN, Color.DKGRAY, Color.GREEN, Color.MAGENTA};
        backgroundAnim = new MyAnim(animLay, colors[i]);
        backgroundAnim.setDuration(1000);
        animLay.startAnimation(backgroundAnim);

        backgroundAnim.setAnimationListener(new Animation.AnimationListener() {
            @Override
            public void onAnimationStart(Animation animation) {

            }

            @Override
            public void onAnimationEnd(Animation animation) {

                if (i == colors.length - 1) {
                    i = 0;
                } else {
                    i++;
                }
                backgroundAnim.setColor(colors[i]);
                animLay.startAnimation(backgroundAnim);


            }

            @Override
            public void onAnimationRepeat(Animation animation) {

            }
        });
    }

Upvotes: 2

SuperFrog
SuperFrog

Reputation: 7674

You can create your own loop, something like:

 int delayBetweenAnimations = 10000;

    for (int i = 0; i < yourImagesArray.length ; i++) {

        int delay = i * delayBetweenAnimations;

        yourImageview.postDelayed(new Runnable() {
            @Override
            public void run() {
                //set your image and animation here
            }
        }, delay);

    }

Another way is to use recursive animation:

          @Override    
           public void onAnimationEnd(Animator animation) {
               if(check_if_you_Still_want to_loop){
                    //rerun your animation
               }
           }

Upvotes: 2

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