如何创建和绘制在从 View 扩展的类中创建的进度条

发布于 2024-11-04 03:35:14 字数 679 浏览 3 评论 0 原文

我想知道是否可以创建一个在从类 View 扩展的类中创建的进度条？

我的目的是在我的动画中添加一个进度条，使用“在视图上”结构在 android 中创建动画：

http://developer.android.com/guide/topics/graphics/index.html

我在视图类中尝试了以下方法，但没有出现。

public class CustomDrawableView extends View {
    private ProgressBar mProgress;

    public CustomDrawableView(Context context) {
        super(context);
        mProgress = new ProgressBar(context, null, android.R.attr.progressBarStyleSmall);
    }

    protected void onDraw(Canvas canvas) {
        mProgress.draw(canvas);
    }
}

有什么建议吗？

问候

原文

I want to know if it is possible to create a progress bar that is created in a class that extends from the class View?

My intention is to add a progress bar in my animation, using the "On a View" structure for creating animations in android:

http://developer.android.com/guide/topics/graphics/index.html

I tried with the fallowing way, in the view class, but it didn't appear.

public class CustomDrawableView extends View {
    private ProgressBar mProgress;

    public CustomDrawableView(Context context) {
        super(context);
        mProgress = new ProgressBar(context, null, android.R.attr.progressBarStyleSmall);
    }

    protected void onDraw(Canvas canvas) {
        mProgress.draw(canvas);
    }
}

Any suggestion?

Greetings

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