【移动应用开发技术】Android动画知识有哪些

【移动应用开发技术】Android动画知识有哪些

//初始化

Animation

alphaAnimation

=

new

AlphaAnimation(0.1f,

1.0f);

//设置动画时间

alphaAnimation.setDuration(3000);

this.startAnimation(alphaAnimation);

Animation

rotateAnimation

=

new

RotateAnimation(0f,

360f);

rotateAnimation.setDuration(1000);

this.startAnimation(rotateAnimation);

//初始化

Animation

scaleAnimation

=

new

ScaleAnimation(0.1f,

1.0f,0.1f,1.0f);

//设置动画时间

scaleAnimation.setDuration(500);

this.startAnimation(scaleAnimation);

//初始化

nimation

translateAnimation

=

new

TranslateAnimation(0.1f,

100.0f,0.1f,100.0f);

//设置动画时间

translateAnimation.setDuration(1000);

this.startAnimation(translateAnimation);

//初始化

Translate动画

translateAnimation

=

new

TranslateAnimation(0.1f,

100.0f,0.1f,100.0f);

//初始化

Alpha动画

alphaAnimation

=

new

AlphaAnimation(0.1f,

1.0f);

//动画集

AnimationSet

set

=

new

AnimationSet(true);

set.addAnimation(translateAnimation);

set.addAnimation(alphaAnimation);

//设置动画时间

(作用到每个动画)

set.setDuration(1000);

this.startAnimation(set);

<set

android:interpolator="@android:anim/accelerate_interpolator">

</set>

<?xml

version="1.0"

encoding="utf-8"?>

<InterpolatorName

xmlns:android="/apk/res/android"

android:attribute_name="value"

/>

<?xml

version="1.0"

encoding="utf-8"?>

<overshootInterpolator

xmlns:android="/apk/res/android"

android:tension="7.0"/>

<scale

xmlns:android="/apk/res/android"

android:interpolator="@anim/my_overshoot_interpolator"

android:fromXScale="1.0"

android:toXScale="3.0"

android:fromYScale="1.0"

android:toYScale="3.0

android:pivotX="50%"

android:pivotY="50%"

android:duration="700"

/>

public

float

getInterpolation(float

input)

{

return

input;

}

public

float

getInterpolation(float

input)

{

return

(float)(Math.cos((input

+

1)

*

Math.PI)

/

2.0f)

+

0.5f;

}

1)计算属性值/upload/information/20200311/46/191991.jpg

核心类:/upload/information/20200311/46/191992.jpgValueAnimator

animation

=

ValueAnimator.ofFloat(0f,

1f);

animation.setDuration(1000);

animation.addUpdateListener(new

AnimatorUpdateListener()

{

@Override

public

void

onAnimationUpdate(ValueAnimator

animation)

{

Log.i("update",

((Float)

animation.getAnimatedValue()).toString());

}

});

animation.setInterpolator(new

CycleInterpolator(3));

animation.start();

ObjectAnimator

animX

=

ObjectAnimator.ofFloat(myView,

"x",

50f);

ObjectAnimator

animY

=

ObjectAnimator.ofFloat(myView,

"y",

100f);

AnimatorSet

animSetXY

=

new

AnimatorSet();

animSetXY.playTogether(animX,

animY);

animSetXY.start();ropertyValuesHolder

pvhX

=

PropertyValuesHolder.ofFloat("x",

50f);

PropertyValuesHolder

pvhY

=

PropertyValuesHolder.ofFloat("y",

100f);

ObjectAnimator.ofPropertyValuesHolder(myView,

pvhX,

pvyY).start();myView.animate().x(50f).y(100f);//myView.animate()直接返回一个ViewPropertyAnimator对象Keyframe

kf0

=

Keyframe.ofFloat(0f,

0f);

Keyframe

kf1

=

Keyframe.ofFloat(.5f,

360f);

Keyframe

kf2

=

Keyframe.ofFloat(1f,

0f);

PropertyValuesHolder

pvhRotation

=

PropertyValuesHolder.ofKeyframe("rotation",

kf0,

kf1,

kf2);//动画属性名，可变参数

ObjectAnimator

rotationAnim

=

ObjectAnimator.ofPropertyValuesHolder(target,

pvhRotation)

rotationAnim.setDuration(5000);public

static

KeyframeSet

ofFloat(float...

values)

{

int

numKeyframes

=

values.length;

FloatKeyframe

keyframes[]

=

new

FloatKeyframe[Math.max(numKeyframes,2)];

if

(numKeyframes

==

1)

{

keyframes[0]

=

(FloatKeyframe)

Keyframe.ofFloat(0f);

keyframes[1]

=

(FloatKeyframe)

Keyframe.ofFloat(1f,

values[0]);

}

else

{

keyframes[0]

=

(FloatKeyframe)

Keyframe.ofFloat(0f,

values[0]);

for

(int

i

=

1;

i

<

numKeyframes;

++i)

{

keyframes[i]

=

(FloatKeyframe)

Keyframe.ofFloat((float)

i

/

(numKeyframes

-

1),

values[i]);//这里是关键

}

}

return

new

FloatKeyframeSet(keyframes);<set

android:ordering="sequentially">

<set>

<objectAnimator

android:propertyName="x"

android:duration="500"

android:valueTo="400"

android:valueType="intType"/>

<objectAnimator

android:propertyName="y"

android:duration="500"

android:valueTo="300"

android:valueType="intType"/>

</set>

<objectAnimator

android:propertyName="alpha"

android:duration="500"

android:valueTo="1f"/>

</set>AnimatorSet

set

=

(AnimatorSet)

AnimatorInflater.loadAnimator(myContext,

R.perty_animator);

set.setTarget(myObject);

set.start();<set

android:ordering=["together"

|

"sequentially"]>

<objectAnimator

android:propertyName="string"

android:duration="int"

android:valueFrom="float

|

int

|

color"

android:valueTo="float

|

int

|

color"

android:startOffset="int"

android:repeatCount="int"

android:repeatMode=["repeat"

|

"reverse"]

android:valueType=["intType"

|

"floatType"]/>

<animator

android:duration="int"

android:valueFrom="float

|

int

|

color"

android:valueTo="float

|

int

|

color"

android:startOffset="int"

android:repeatCount="int"

android:repeatMode=["repeat"

|

"reverse"]

android:valueType=["intType"

|

"floatType"]/>

<set>

...

</set>

</set><Button

android:id="@+id/btn_1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/btn_1"

android:padding="10px"

android:layout_below="@id/touch_feedback_ripple_textview"

/>

<Button

android:id="@+id/btn_2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/btn_2"

android:layout_below="@id/btn_1"

android:padding="10px"

android:background="?android:attr/selectableItemBackground"/>

<Button

android:id="@+id/btn_3"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/btn_3"

android:layout_below="@id/btn_2"

android:padding="10px"

android:background="?android:attr/selectableItemBackgroundBorderless"/>/upload/information/20200311/46/191993.jpg

public

static

Animator

createCircularReveal(View

view,nt

centerX,

int

centerY,

float

startRadius,

float

endRadius)

{

return

new

RevealAnimator(view,

centerX,

centerY,

startRadius,

endRadius);

}final

View

oval

=

this.findViewById(R.id.oval);

oval.setOnClickListener(new

View.OnClickListener()

{

@Override

public

void

onClick(View

v)

{

Animator

animator

=

ViewAnimationUtils.createCircularReveal(

oval,oval.getWidth()/2,oval.getHeight()/2,oval.getWidth(),0);

animator.setInterpolator(new

AccelerateDecelerateInterpolator());

animator.setDuration(2000);

animator.start();

}

});

final

View

rect

=

this.findViewById(R.id.rect);

rect.setOnClickListener(new

View.OnClickListener()

{

@Override

public

void

onClick(View

v)

{

Animator

animator

=

ViewAnimationUtils.createCircularReveal(

rect,0,0,0,(float)

Math.hypot(rect.getWidth(),

rect.getHeight()));

animator.setInterpolator(new

AccelerateInterpolator());

animator.setDuration(2000);

animator.start();

}

});

/upload/information/20200311/46/191994.jpg<?xml

version="1.0"

encoding="utf-8"?>

<fade

xmlns:android="/apk/res/"

android:duration="1000"/>

res/transition/activity_slide.xml

<?xml

version="1.0"

encoding="utf-8"?>

<slide

xmlns:android="/apk/res/"

android:duration="1000"/>

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_transition);

setupWindowAnimations();

}

private

void

setupWindowAnimations()

{

Slide

slide

=

TransitionInflater.from(this).inflateTransition(R.transition.activity_slide);

getWindow().setExitTransition(slide);

}

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_transition);

setupWindowAnimations();

}

private

void

setupWindowAnimations()

{

Fade

fade

=

TransitionInflater.from(this).inflateTransition(R.transition.activity_fade);

getWindow().setEnterTransition(fade);

}

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_transition);

setupWindowAnimations();

}

private

void

setupWindowAnimations()

{

Slide

slide

=

new

Slide();

slide.setDuration(1000);

getWindow().setExitTransition(slide);

}

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_transition);

setupWindowAnimations();

}

private

void

setupWindowAnimations()

{

Fade

fade

=

new

Fade();

fade.setDuration(1000);

getWindow().setEnterTransition(fade);

}

<resources>

<style

name="AppTheme"

parent="Theme.AppCompat.Light.DarkActionBar">

<item

name="colorPrimary">@color/colorPrimary</item>

<item

name="colorPrimaryDark">@color/colorPrimaryDark</item>

<item

name="colorAccent">@color/colorAccent</item>

<!--设置选中的颜色-->

<!--

允许使用transitions

-->

<item

name="android:windowContentTransitions">true</item>

<!--是否覆盖执行，其实可以理解成是否同步执行还是顺序执行-->

<item

name="android:windowAllowEnterTransitionOverlap">false</item>

<item

name="android:windowAllowReturnTransitionOverlap">false</item>

</style>

</resources>

@Override

public

void

onClick(View

v)

{

ArrayList<Pair<View,String>>

arrayList

=

new

ArrayList<Pair<View,String>>();

switch

(v.getId())

{

case

R.id.explode_btn:

setExplodeTransition();

flag

=

AnimConstant.EXPLODE_FLAG;

break;

case

R.id.slide_btn:

setSlideTransition();

flag

=

AnimConstant.SLIDE_FLAG;

break;

case

R.id.pade_in_out_btn:

setFadeTransition();

flag

=

AnimConstant.PADE_IN_OUT_FLAG;

break;

case

R.id.shared_element_btn:

arrayList.add(new

Pair<View,

String>(shareElementBtn,

"shared_name_btn"));

flag

=

AnimConstant.SHARED_ELEMENTS_FLAG;

break;

}

startActivity(arrayList);

}

private

void

setFadeTransition()

{

Fade

fadeTransition

=

new

Fade();

fadeTransition.setDuration(1000);

getWindow().setReenterTransition(fadeTransition);

getWindow().setExitTransition(fadeTransition);

}

private

void

startActivity(ArrayList<Pair<View,

String>>

arrayList)

{

Intent

intent

=

new

Intent();

intent.setClass(this

,SecondActivity.class);

intent.putExtra("transition_flag",flag);

ActivityOptionsCompat

options

=

ActivityOptionsCompat.makeSceneTransitionAnimation(this,

arrayList.toArray(new

Pair[arrayList.size()]));

startActivity(intent,

options.toBundle());

}

private

void

setExplodeTransition()

{

Explode

explode

=

new

Explode();

explode.setDuration(2000);

getWindow().setReenterTransition(explode);

getWindow().setExitTransition(explode);

}

private

void

setSlideTransition()

{

Slide

slideTransition

=

new

Slide();

slideTransition.setSlideEdge(Gravity.LEFT);

slideTransition.setDuration(1000);

getWindow().setReenterTransition(slideTransition);

getWindow().setExitTransition(slideTransition);

}

private

Button

returnBtn

=

null;

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_second);

Intent

intent

=

getIntent();

int

flag

=

intent.getIntExtra("transition_flag"

,-1);

if

(flag

!=

AnimConstant.SHARED_ELEMENTS_FLAG)

{

setupWindowAnimations();

}

returnBtn

=

(Button)

this.findViewById(R.id.return_btn);

returnBtn.setOnClickListener(new

View.OnClickListener()

{

@Override

public

void

onClick(View

v)

{

finishAfterTransition();

}

});

}

private

void

setupWindowAnimations()

{

Explode

explode

=

new

Explode();

explode.setDuration(2000);

getWindow().setEnterTransition(explode);

}/upload/information/20200311/46/191995.jpg<pathInterpolator

xmlns:android="/apk/res/android"

android:controlX1="0.4"

android:controlY1="0"

android:controlX2="1"

android:controlY2="1"/>public

class

SCPahtInterpolator

extends

PathInterpolator

{

public

static

final

float

DEFALUT_CONTROL_1_X

=

0.5f;

public

static

final

float

DEFALUT_CONTROL_1_Y

=

0f;

public

static

final

float

DEFALUT_CONTROL_2_X

=

0f;

public

static

final

float

DEFALUT_CONTROL_2_Y

=

1f;

public

SCPahtInterpolator()

{

super(DEFALUT_CONTROL_1_X,

DEFALUT_CONTROL_1_Y,

DEFALUT_CONTROL_2_X,

DEFALUT_CONTROL_2_Y);

}

public

SCPahtInterpolator(Path

path)

{

super(path);

}

public

SCPahtInterpolator(float

controlX,

float

controlY)

{

super(controlX,

controlY);

}

public

SCPahtInterpolator(float

controlX1,

float

controlY1,

float

controlX2,

float

controlY2)

{

super(controlX1,

controlY1,

controlX2,

controlY2);

}

public

SCPahtInterpolator(Context

context,

AttributeSet

attrs)

{

super(context,

attrs);

}

}ObjectAnimator

mAnimator;

mAnimator

=

ObjectAnimator.ofFloat(view,

View.X,

View.Y,

path);

...

mAnimator.start();<!--

animate

the

translationZ

property

of

a

view

when

pressed

-->

<selector

xmlns:android="/apk/res/android">

<item

android:state_pressed="true">

<set>

<objectAnimator

android:propertyName="translationZ"

android:duration="@android:integer/config_shortAnimTime"

android:valueTo="2dp"

android:valueType="floatType"/>

<!--

you

could

have

other

objectAnimator

elements

here

for

"x"

and

"y",

or

other

properties

-->

</set>

</item>

<item

android:state_enabled="true"

android:state_pressed="false"

android:state_focused="true">

<set>

<objectAnimator

android:propertyName="translationZ"

android:duration="100"

android:valueTo="0"

android:valueType="floatType"/>

</set>

</item>

</selector><!--

res/drawable/myanimstatedrawable.xml

-->

<animated-selector

xmlns:android="/apk/res/android">

<!--

provide

a

different

drawable

for

each

state-->

<item

android:id="@+id/pressed"

android:drawable="@drawable/drawableP"

android:state_pressed="true"/>

<item

android:id="@+id/focused"

android:drawable="@drawable/drawableF"

android:state_focused="true"/>

<item

android:id="@id/default"

android:drawable="@drawable/drawableD"/>

<!--

specify

a

transition

-->

<tra