AppCompatCompoundButtonHelper.java 文件源码

void applyButtonTint() {
    Drawable buttonDrawable = CompoundButtonCompat.getButtonDrawable(this.mView);
    if (buttonDrawable == null) {
        return;
    }
    if (this.mHasButtonTint || this.mHasButtonTintMode) {
        buttonDrawable = DrawableCompat.wrap(buttonDrawable).mutate();
        if (this.mHasButtonTint) {
            DrawableCompat.setTintList(buttonDrawable, this.mButtonTintList);
        }
        if (this.mHasButtonTintMode) {
            DrawableCompat.setTintMode(buttonDrawable, this.mButtonTintMode);
        }
        if (buttonDrawable.isStateful()) {
            buttonDrawable.setState(this.mView.getDrawableState());
        }
        this.mView.setButtonDrawable(buttonDrawable);
    }
}