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    How to make TextView Blink in android

    Sometimes , you should be need the textview blink like a digital clock. here is the simple code for you should make blink textview in android. I have discussed here , mainly 3 methods,

    Method 1:

    private void blinkTextView(){
        final Handler handler = new Handler();
        new Thread(new Runnable() {
            @Override
            public void run() {
            int timeToBlink = 1000;    //in milissegunds
            try{Thread.sleep(timeToBlink);}catch (Exception e) {}
                handler.post(new Runnable() {
                    @Override
                        public void run() {
                        TextView tvBlink = (TextView) findViewById(R.id.textViewBlink);
                        if(tvBlink .getVisibility() == View.VISIBLE){
                            tvBlink .setVisibility(View.INVISIBLE);
                        }else{
                            tvBlink .setVisibility(View.VISIBLE);
                        }
                        blinkTextView();
                    }
                    });
                }
            }).start();
        }

    call the blinkTextView in onCreate, if you want blink textview whenever load application.

    Method 2:


    TextView tvBlink = (TextView) findViewById(R.id.textViewBlink);

    Animation anim = new AlphaAnimation(0.0f, 1.0f);
    anim.setDuration(50); //You can manage the blinking time with this parameter
    anim.setStartOffset(20);
    anim.setRepeatMode(Animation.REVERSE);
    anim.setRepeatCount(Animation.INFINITE);
    tvBlink .startAnimation(anim);


    Method 3:

    final ObjectAnimator textColorAnim;

    and in onCreate, there should be

    TextView blinkText = (TextView) findViewById(R.id.blinkTextView);
    blinkTextView(blinkText );

    Now definition of above function:

    private void blinkTextView(TextView blinkTextView){
           textColorAnim = ObjectAnimator.ofInt(blinkTextView, "textColor", Color.BLACK, Color.TRANSPARENT);
                    textColorAnim.setDuration(1000);
                    textColorAnim.setEvaluator(new ArgbEvaluator());  
                    textColorAnim.setRepeatCount(ValueAnimator.INFINITE);
                    textColorAnim.setRepeatMode(ValueAnimator.REVERSE);
                    textColorAnim.start();
    }


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