如何以编程方式创建 ProgressBar? [英] How to create a ProgressBar programmatically?

问题描述

我的应用程序需要以编程方式创建一个小的 ProgressBar.ProgressBar 没有设置样式的方法(我想要一个小的ProgressBar).构造函数可以接受一个 AttributeSet，但是，它是一个接口并要求我实现一组功能.有没有办法将ProgressBar 设置为小样式?(我不能使用 XML 来创建ProgressBar.)

My application needs to create a small ProgressBar programmatically. ProgressBar doesn't have a method to set the style (I want a small ProgressBar). The constructor can take an AttributeSet, however, it is an interface and requires me to implement a set of functions. Is there a way to set the ProgressBar to a small style? (I can't use XML to create ProgressBar.)

推荐答案

大多数情况下，如果您手动提供 AttributeSet，则必须使用 Android 之一.幸运的是，他们公开了描述小进度条的属性集.使用此代码:

Most of the time if you provide an AttributeSet manually you have to use one of Android's. Luckily, they've exposed the attribute set that describes a small progress bar. Use this code:

progressBar = new ProgressBar(activity, null, android.R.attr.progressBarStyleSmall);

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