Raohh/NaviMenu

NaviMenu 随便开发的一个支持两个弹出动画的自定义控件。

实现原理超级简单， 下面贴几个关键代码：

/** * 第一个子View为按钮，为按钮布局且初始化点击事件 */ private void layoutButton() { View cButton = getChildAt(0); cButton.setOnClickListener(this);

    int width = cButton.getMeasuredWidth();
    int height = cButton.getMeasuredHeight();
    int marinBottom = (BottomBarHeight - height) / 2; //居中处理

    int l = getMeasuredWidth() / 2 - (width / 2);
    int t = getMeasuredHeight() - height - marinBottom;
    cButton.layout(l, t, l + width, t + height);
}

/*****************************************/
 @Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
    if (changed) {
        /**
         * 初始化用户点击按钮位置
         */
        layoutButton();

        int count = getChildCount();
        /**
         * 根据需求 设置两个View 的位置
         */
        for (int i = 0; i < count - 1; i++) {
            View child = getChildAt(i + 1);
            child.setVisibility(View.GONE);

            int cWidth = child.getMeasuredWidth();
            int cHeight = child.getMeasuredHeight();

            int C1w = getMeasuredWidth() / 2 - (cWidth / 2) - (cWidth / 2 + cWidth / 4);
            int C1h = getMeasuredHeight() - cHeight - cHeight;

            int C2w = getMeasuredWidth() / 2 - (cWidth / 2) + (cWidth / 2 + cWidth / 4);
            int C2h = getMeasuredHeight() - cHeight - cHeight;

            if (i == 0) {
                child.layout(C1w, C1h, C1w + cWidth, C1h + cHeight);
            } else if (i == 1) {
                child.layout(C2w, C2h, C2w + cWidth, C2h + cHeight);
            }
        }
    }
}