如何与And​​roid上的形状属性更改的TextView的颜色在运行时？ [英] How to change the color of TextView at runtime with shape attribute on Android?

问题描述

我用这样的形状属性：

<?xml version="1.0" encoding="utf-8"?>
<shape
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle"
    android:padding="10dp">
<solid
    android:color="#FFFFFF" />
<corners
    android:bottomRightRadius="15dp"
    android:bottomLeftRadius="15dp"
    android:topLeftRadius="15dp"
    android:topRightRadius="15dp" />
</shape>

和

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:background="@drawable/rounded_textview">
        </TextView>

如果我改变颜色在运行时用下面的方法：

If I change the color at runtime with the following method:

TextView.setBackgroundColor();

我使用的形状消失。我应该怎么做才能用正确的方式改变呢？ 或者我应该必须能够产生大量的形状只是颜色不同？

The shape I used is disappear. What should I do to change it with the proper way? Or should I must have to generate lots of shape for just different colors?

感谢。

推荐答案

我发现PaintDrawable的解决方案，其中包含的颜色和RADIUS属性。 但它必须设置在构造器的颜色。所以，我有新的一个PaintDrawable在运行时每次并将其设置为一个TextView的背景绘制。

I found a solution with PaintDrawable which contains color and radius attributes. But It have to set the color in the contructor. So I have to new a PaintDrawable at runtime every time and set it to the background drawable of a TextView.

public static PaintDrawable getRoundedColorDrawable(int color, float radius, int padding) {
    PaintDrawable paintDrawable = new PaintDrawable(color);
    paintDrawable.setCornerRadius(radius);
    paintDrawable.setPadding(padding, padding, padding, padding);
    return paintDrawable;
}

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