android - 拐角半径和可在代码中绘制的项目

Question

我有这个 xml；

<?xml version="1.0" encoding="UTF-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">  
    <item android:drawable="@drawable/back" />
    <item>
        <shape>
            <solid/>
            <stroke android:width="1dip" android:color="#25786" />
            <corners android:radius="10dip"/>
            <padding android:left="0dip" android:top="0dip" 
                     android:right="0dip" android:bottom="0dip" />
        </shape>
    </item> 
</layer-list> 

现在我通过代码来做:

Drawable[] layers = new Drawable[2];

    ShapeDrawable sd1 = new ShapeDrawable(new RectShape());
    sd1.getPaint().setColor(0xFFFFFFFF);
    sd1.getPaint().setStyle(Style.STROKE);
    sd1.getPaint().setStrokeWidth(1);

    layers[0] = sd1;

    LayerDrawable composite = new LayerDrawable(layers);

但我无法为 <corners android:radius="10dip"/> 编码和 <item android:drawable="@drawable/back" />

怎么做？

编辑 1

Drawable[] layers = new Drawable[2];

ShapeDrawable sd1 = new ShapeDrawable(new RectShape());
sd1.getPaint().setColor(0xFFFFFFFF);
sd1.getPaint().setStyle(Style.STROKE);
sd1.getPaint().setStrokeWidth(1);
sd1.getPaint().setPathEffect(new CornerPathEffect(10));

layers[1] = sd1;
layers[0] = getResources().getDrawable(R.drawable.pie_chart_back);

LayerDrawable composite = new LayerDrawable(layers);

Answer 1

就像在您的 XML 中一样，您需要三个 Drawable，而不是一个。一个是 LayerDrawable包含其他的。另一个丢失的可能是 BitmapDrawable取决于 @drawable/back。

你要找的边角效果在CornerPathEffect Drawable 的 Paint，请参阅 Paint.setPathEffect .