Android attribute animation (with Demo Case)

Demo Minamoto码

Property animation (Property Animation)

Category: transparent animation, rotation animation, displacement animation, zoom animation, a combination of animation

Writing: code dynamically set properties, use xml file attributes defined in two ways

And tween different points of animation:

Property animation can change the position of the controls
Rotation, displacement, zooming animation can only specify a direction (X-axis, Y-axis)

If you need to use XML define tween
First created in the resource path res directory: animator (name can not be wrong)
Second, create xml file in the res / animator directory, the root node must be: or . If it is a combination of animation, the root node must be: . (Specifically refer to the code example in the article)

Transparent animation

propertyName：alpha

Code Example 1. (code set properties)

//不透明-完全透明-半透明（会停留在最后的设置效果上）
ObjectAnimator alpha = ObjectAnimator.ofFloat(ivView, "alpha", 1, 0, 0.5f);
alpha.setDuration(2000);
alpha.start();

//上下代码等效
//        ObjectAnimator oa = new ObjectAnimator();
//        oa.setTarget(ivView);
//        oa.setPropertyName("alpha");
//        oa.setFloatValues(1, 0, 0.5f);
//        oa.setDuration(2000);
//        oa.start();

Code Example 2. (set attributes in XML)

R.animator.animator_my_alpha

<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
                android:duration="2000"
                android:propertyName="alpha"
                android:repeatCount="1"
                android:valueFrom="1"
                android:valueTo="0.5f"
                android:repeatMode="reverse">
</objectAnimator>

<!-- 外层可以使用 animator 包裹-->
<!-- 外层也可以不使用 animator 包裹-->

<!--<animator xmlns:android="http://schemas.android.com/apk/res/android">-->
<!--<objectAnimator-->
        <!--android:duration="2000"-->
        <!--android:propertyName="alpha"-->
        <!--android:repeatCount="1"-->
        <!--android:valueFrom="1"-->
        <!--android:valueTo="0.5f"-->
        <!--android:repeatMode="reverse">-->
<!--</objectAnimator>-->
<!--</animator>-->

Call XML

ObjectAnimator animator = (ObjectAnimator) AnimatorInflater.loadAnimator(this, R.animator.animator_my_alpha);
animator.setTarget(ivView);
animator.start();

Rotation animation

propertyName: rotation (about the center of rotation), rotationX (rotation around the X axis), rotationY (rotation around the Y axis)

Code Example 1. (code set properties)

ObjectAnimator rotationX = ObjectAnimator.ofFloat(ivView, "rotation", 0, 180, 90, 360);
rotationX.setDuration(2000);
rotationX.start();

Code Example 2. (set attributes in XML)

R.animator.animator_my_rotation

<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
                android:duration="2000"
                android:propertyName="rotation"
                android:repeatCount="2"
                android:repeatMode="reverse"
                android:valueFrom="0"
                android:valueTo="180">
</objectAnimator>

Call XML

ObjectAnimator animator = (ObjectAnimator) AnimatorInflater.loadAnimator(this, R.animator.animator_my_rotation);
animator.setTarget(ivView);
animator.start();

Displacement animation

propertyName: translationX (X-axis direction), translationY (Y axis direction)

Code Example 1. (code set properties)

ObjectAnimator translationY = ObjectAnimator.ofFloat(ivView, "translationY", 0, 100, 0, 100);
translationY.setDuration(2000);
translationY.start();

Code Example 2. (set attributes in XML)

R.animator.animator_my_translation_y

<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
                android:duration="2000"
                android:propertyName="translationX"
                android:repeatCount="2"
                android:repeatMode="reverse"
                android:valueFrom="0"
                android:valueTo="200">
</objectAnimator>

Call XML

ObjectAnimator animator = (ObjectAnimator) AnimatorInflater.loadAnimator(this, R.animator.animator_my_translation_y);
animator.setTarget(ivView);
animator.start();

Zoom animation

propertyName: the scaleX (X-axis direction), scaleY (Y axis direction)

Code Example 1. (code set properties)

ObjectAnimator scaleY = ObjectAnimator.ofFloat(ivView, "scaleY", 1, 0.5f, 1, 0.5f);
scaleY.setDuration(2000);
scaleY.start();

Code Example 2. (set attributes in XML)

R.animator.animator_my_scale_y

<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
                android:duration="2000"
                android:propertyName="scaleY"
                android:repeatCount="2"
                android:repeatMode="reverse"
                android:valueTo="2"
                android:valueFrom="1">
</objectAnimator>

Call XML

ObjectAnimator animator = (ObjectAnimator) AnimatorInflater.loadAnimator(this, R.animator.animator_my_scale_y);
animator.setTarget(ivView);
animator.start();

A combination of animation

playSequentially: sequentially performing all animations
playTogether: performed along all animations
1. Code Example (code set properties)

AnimatorSet set = new AnimatorSet();
ObjectAnimator alpha = ObjectAnimator.ofFloat(ivView, "alpha", 1, 0.5f, 1);
ObjectAnimator rotation = ObjectAnimator.ofFloat(ivView, "rotation", 0, 180, 90, 360);
ObjectAnimator translationY = ObjectAnimator.ofFloat(ivView, "translationY", 0, 100, 0, 100);
ObjectAnimator scaleY = ObjectAnimator.ofFloat(ivView, "scaleY", 1, 2, 1, 0.5f);
set.setDuration(3000);
//playSequentially：依次执行所有的动画
set.playSequentially(alpha, rotation, translationY, scaleY);
//playTogether：把所有的动画一起执行
//set.playTogether(alpha, rotationX, translationY, scaleY);

set.start(); //切记：要start

Code Example 2. (set attributes in XML)

R.animator.animator_my_set1

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:ordering="together">
    <objectAnimator
        android:duration="2000"
        android:propertyName="translationX"
        android:repeatCount="2"
        android:repeatMode="reverse"
        android:valueFrom="0"
        android:valueTo="200" />
    <objectAnimator
        android:duration="2000"
        android:propertyName="translationY"
        android:repeatCount="2"
        android:repeatMode="reverse"
        android:valueFrom="0"
        android:valueTo="200" />
</set>

R.animator.animator_my_set2

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
     android:ordering="together">
    <set android:ordering="sequentially">
        <objectAnimator
                android:duration="1000"
                android:propertyName="translationX"
                android:repeatCount="2"
                android:repeatMode="reverse"
                android:valueFrom="0"
                android:valueTo="200"/>
        <objectAnimator
                android:duration="1000"
                android:propertyName="translationY"
                android:repeatCount="2"
                android:repeatMode="reverse"
                android:valueFrom="0"
                android:valueTo="200"/>
    </set>
    <objectAnimator
            android:duration="2000"
            android:propertyName="rotationX"
            android:repeatCount="2"
            android:repeatMode="reverse"
            android:valueFrom="0"
            android:valueTo="180"/>
</set>

Call XML

//AnimatorSet animator = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.animator_my_set1);
AnimatorSet animator = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.animator.animator_my_set2);
animator.setTarget(ivView);
animator.start();

PS:
tween: click here

Frame Animation: click here