RoundedDrawable.java 文件源码

public RoundedDrawable setScaleType(ScaleType scaleType) {
    if (scaleType == null) {
        scaleType = ScaleType.FIT_CENTER;
    }
    if (mScaleType != scaleType) {
        mScaleType = scaleType;
        updateShaderMatrix();
    }
    return this;
}