NavigationMenuItemView.java 文件源码

public void setIcon(Drawable icon) {
    if (icon != null) {
        ConstantState state = icon.getConstantState();
        if (state != null) {
            icon = state.newDrawable();
        }
        icon = DrawableCompat.wrap(icon).mutate();
        icon.setBounds(0, 0, this.mIconSize, this.mIconSize);
        DrawableCompat.setTintList(icon, this.mIconTintList);
    }
    TextViewCompat.setCompoundDrawablesRelative(this.mTextView, icon, null, null, null);
}