从右到左进度条? [英] Right to Left ProgressBar?

问题描述

有谁知道如何使视图反转，我有一个水平的 ProgressBar，我希望它从右到左而不是从左到右

Does anyone know how to make a View reversed, I have a horizontal ProgressBar and I want it to right to left instead of left to right

推荐答案

制作一个普通进度条视图的子类，并实现 onDraw 方法在绘制之前旋转画布:

Make a subclass of the normal progress bar view and implement the onDraw method to rotate the canvas before drawing it:

@Override
protected void onDraw(Canvas canvas) {
    canvas.save();
    canvas.rotate(180,<CenterX>,<CenterY>);
    super.onDraw(canvas);
    canvas.restore();
}

这应该可以解决问题.

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