Android View Animation (i)---scale

When we do the APK development process, if you want to attract users, we need to make a very good interface, of course, animation is essential, then the recording and learning animation related ...

Next, some things in the usual, slowly upload up, do a record and save

The first one to be explained today is the Scaleanimation (zoom animation) in the View animation

• Scaleanimation

It allows the view to zoom in and out, the corresponding class is scaleanimation, inherits from animation

• Property

<scale> label scaling animation, corresponding to the scaleanimation,

It has a series of properties

1 <?XML version= "1.0" encoding= "Utf-8"?>2 3 < Scalexmlns:android= "Http://schemas.android.com/apk/res/android"4 5 Android:fromxscale= "0.0"#起始x尺寸比例6 7 Android:toxscale= "1.4"#最终x尺寸比例8 9 Android:fromyscale= "0.0"#起始y尺寸比例Ten  One Android:toyscale= "1.4"#最终y尺寸比例 A  - Android:pivotx= "50%"#缩放起点x轴坐标, the value can be a number (50), a percentage (50%), a percentage p (50%p), when the value is a number, the zoom start point is the upper left corner of the view coordinates plus a specific number of pixels, when the value is a percentage, the upper left corner of the current view to sit Plus a specific percentage of the view width, when the value is a percentage p, the specified percentage of the upper-left coordinate of the view plus the width of the parent control -  the Android:pivoty= "50%"#同上 -  - android:duration= "The "#动画持续时间, in milliseconds -  + Android:fillafter= "true"#动画结束后, keep the state at the end -  + Android:fillbefore= "true"#动画结束后, revert to the initial state A  at android:fillenabled= "true"#效果同上 -  - Android:repeatcount= "5"#重复次数, the value is 1 infinite repetition, the default animation is executed once -  - Android:repeatmode= "Reverse"#重复模式, there are reverse and restart two values, the former is reverse playback, the latter is a restart -  in Android::interpolator= "@android: Anim/accelerate_decelerate_interpolator"#插值器 affect the speed of the animation this property can not be specified, the default is the accelerated deceleration differential/>

• Use of scaled animations

is divided into two types: the use of XML, the use of code

1. How XML is used:

First step: Create a new Anim folder underneath the Res directory and create a new XML file in it, such as

Step Two: Add the appropriate properties as needed

1 <?XML version= "1.0" encoding= "Utf-8"?>2 < Scalexmlns:android= "Http://schemas.android.com/apk/res/android"3 Android:fromxscale= "0.0"4 Android:toxscale= "1.4"5 Android:fromyscale= "0.0"6 Android:toyscale= "1.4"7 Android:pivotx= "0"8 Android:pivoty= "50%"9 android:duration= "+"Ten Android:repeatcount= "4" One Android:repeatmode= "Reverse" A Android:interpolator= "@android: Anim/accelerate_decelerate_interpolator" -     />

The third step is to use XML in your code

1 TV = Findviewbyid (r.id.tv); 2 Animation Animation = animationutils.loadanimation (this,r.anim.scalefile); 3 tv.startanimation (animation);

Use the Scaleanimation class directly in your code to use the Zoom animation:

1 scaleanimation scaleanimation = new Scaleanimation (1,1.4f,1,1.4f,0.5f,0.5f); 2 scaleanimation.setduration (+); 3 Scaleanimation.setrepeatcount (4); 4 Scaleanimation.setrepeatmode (animation.reverse); 5 tv.startanimation (scaleanimation);

• Summarize

About Scaleanimation first down here, you need to download the source code https://github.com/yangmtou/AnimationForAndroid

Android View Animation (i)---scale