Animate Imageview From Alpha 0 To 1

I have an imageView that I want to start as invisible. After a certain button is clicked, I want to animate the Image into view and then I want it to remain at alpha 1. How do I do

Solution 1:

Try to make your ImageView invisible in xml:

<ImageView...android:visibility="invisible"/>

Then, by adding an AnimationListener, make it visible in onAnimationStart:

...
animation1.setFillAfter(true);
animation1.setAnimationListener(newAnimationListener() {
    @OverridepublicvoidonAnimationStart(Animation animation) {
        // pass it visible before starting the animation
        tokenBtn.setVisibility(View.VISIBLE);
    }

    @OverridepublicvoidonAnimationRepeat(Animation animation) {    }
    @OverridepublicvoidonAnimationEnd(Animation animation) {    }
});
// finally, start the animation
tokenBtn.startAnimation(animation1);

Solution 2:

In MainActivity.java add

publicvoidblink(View view) {
        ImageViewimage= (ImageView) findViewById(R.id.imageView);
        Animationanimation= AnimationUtils.loadAnimation(getApplicationContext(), R.anim.blink);
        image.startAnimation(animation1);
    }

Create file named blink.xml in res>anim folder and add this code

<?xml version="1.0" encoding="utf-8"?><setxmlns:android="http://schemas.android.com/apk/res/android"><alphaandroid:fromAlpha="0.0"android:toAlpha="1.0"android:interpolator="@android:anim/accelerate_interpolator"android:duration="--YOUR DURATION--"android:repeatMode="reverse"android:repeatCount="0"/></set>

And make sure that onClick function on button is named blink

Solution 3:

You can simply set initial alpha to 0 then animate it through 1 with desired duration;

imageView.setAlpha(0);

imageView.animate()
    .alpha(1)
    .setDuration(200);