AnimatorDemo | Android属性动画上手实现各种动画效果

 by   linglongxin24 Java Version: Current License: No License

kandi X-RAY | AnimatorDemo Summary

kandi X-RAY | AnimatorDemo Summary

AnimatorDemo is a Java library. AnimatorDemo has no bugs, it has no vulnerabilities, it has build file available and it has low support. You can download it from GitHub.

Android属性动画上手实现各种效果,包括实现基本的透明度,缩放,平移,旋转,以及组合动画,还有就是自定义动画仿 QQ运动和抛物线动画。效果图如下: #1.为什么要用属性动画 属性动画:顾名思义,属性动画就是通过改变一个控件的属性值而达到动画的效果。是3.0之后新出的动画框架。 注意:只要控件的属性提供了set属性的方法,就可以通过属性动画去操作。 属性动画和普通动画的区别:一个普通的动画,比如当发生位移动画的时候普通的补间动画只是改变了其显示效果 并没有真正去改变其属性,所以当点击位移发生移动后的view是没有任何的效果,因为它的真是位置还在原来的地方,比如去动态改变一个view的背景颜色 补间动画都无法去实现,真正是属性动画的好处。 #2.两个核心类. ValueAnimator是整个属性动画机制当中最核心的一个类,属性动画的运行机制是通过不断地对值进行操作来实现的, 而初始值和结束值之间的动画过渡就是由ValueAnimator这个类来负责计算的。 它的内部使用一种时间循环的机制来计算值与值之间的动画过渡, 我们只需要将初始值和结束值提供给ValueAnimator,并且告诉它动画所需运行的时长, 那么ValueAnimator就会自动帮我们完成从初始值平滑地过渡到结束值这样的效果。. ObjectAnimator是ValueAnimator的子类,他本身就已经包含了时间引擎和值计算,所以它拥有为对象的某个属性设置动画的功能。 这使得为任何对象设置动画更加的容易。你不再需要实现 ValueAnimator.AnimatorUpdateListener接口, 因为ObjectAnimator动画自己会自动更新相应的属性值。 ObjectAnimator的实例和ValueAnimator是类似的,但是你需要描叙该对象,需要设置动画的属性的名字(一个字符串),以及动画属性值的变化范围。 举例:. /** * 第一个参数:所要作用的目标控件 * 第二个参数:所要操作该控件的属性值 * 第三个参数:所要操作的属性的开始值 * 第四个参数:所要操作属性的结束值 */ ObjectAnimator anim = ObjectAnimator.ofFloat(iv, "alpha", 0f, 1f);.

            kandi-support Support

              AnimatorDemo has a low active ecosystem.
              It has 29 star(s) with 13 fork(s). There are 1 watchers for this library.
              It had no major release in the last 6 months.
              AnimatorDemo has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of AnimatorDemo is current.

            kandi-Quality Quality

              AnimatorDemo has 0 bugs and 0 code smells.

            kandi-Security Security

              AnimatorDemo has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              AnimatorDemo code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              AnimatorDemo does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              AnimatorDemo releases are not available. You will need to build from source code and install.
              Build file is available. You can build the component from source.
              Installation instructions are not available. Examples and code snippets are available.
              AnimatorDemo saves you 178 person hours of effort in developing the same functionality from scratch.
              It has 441 lines of code, 19 functions and 12 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed AnimatorDemo and discovered the below as its top functions. This is intended to give you an instant insight into AnimatorDemo implemented functionality, and help decide if they suit your requirements.
            • Override on onDraw method
            • Draw a yellow circle
            • Draw a step number
            • Draw step string
            • Draw the red circle
            • Get the height of this step
            • Convert the dip to px
            • Called when the view is clicked
            • Marks parabels as parola
            • Append a value to the list
            • Set current count
            • Set text size
            • Initializes the view
            Get all kandi verified functions for this library.

            AnimatorDemo Key Features

            No Key Features are available at this moment for AnimatorDemo.

            AnimatorDemo Examples and Code Snippets

            No Code Snippets are available at this moment for AnimatorDemo.

            Community Discussions

            No Community Discussions are available at this moment for AnimatorDemo.Refer to stack overflow page for discussions.

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install AnimatorDemo

            You can download it from GitHub.
            You can use AnimatorDemo like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the AnimatorDemo component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer For Gradle installation, please refer .


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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