转载请注明出处：http://blog.csdn.net/hmyang314/article/details/70920295DropPopMenu

显示位置跟随操作按钮显示的带箭头的弹出菜单

GitHub：https://github.com/HMY314/DropPopMenu

一，介绍

本项目是对带箭头的下拉弹出菜单进行了封装，使用简单，同时有如下特点：

1、可以动态修改菜单的背景；

2、弹出位置是依赖于操作按钮的位置显示，处理了按钮在边界位置引起的菜单显示错位问题；

3、菜单宽度以文字的最大长度作为宽度动态计算了；

4、菜单默认弹窗方向是在操作按钮下面，当操作按钮在屏幕底部时，或者菜单的

高度不能完全显示时，菜单是显示在操作按钮上面的

二，使用

1、默认风格

View view = findViewById......

mDropPopMenu = new DropPopMenu(this);

mDropPopMenu.setOnItemClickListener(new DropPopMenu.OnItemClickListener() {

@Override

public void onItemClick(AdapterView> adapterView, View view, int position, long id, MenuItem menuItem) {

Toast.makeText(MainActivity.this, "点击了 " + menuItem.getItemId(), Toast.LENGTH_SHORT).show();

}

});

mDropPopMenu.setMenuList(getMenuList());

mDropPopMenu.show(view);

private ListgetMenuList() {

Listlist = new ArrayList<>();

list.add(new MenuItem(1, "选项"));

list.add(new MenuItem(2, "选项选项选项"));

list.add(new MenuItem(3, "选项选项选项选项"));

list.add(new MenuItem(4, "选项选项"));

list.add(new MenuItem(5, "选项选项选项"));

list.add(new MenuItem(5, "选项选项选项选项"));

return list;

}

2、改变弹窗背景、文字颜色

public void onClickPopWhite(View view) {

DropPopMenu dropPopMenu = new DropPopMenu(this);

dropPopMenu.setTriangleIndicatorViewColor(Color.WHITE);

dropPopMenu.setBackgroundResource(R.drawable.bg_drop_pop_menu_white_shap);

dropPopMenu.setItemTextColor(Color.BLACK);

dropPopMenu.setOnItemClickListener(new DropPopMenu.OnItemClickListener() {

@Override

public void onItemClick(AdapterView> adapterView, View view, int position, long id, MenuItem menuItem) {

Toast.makeText(MainActivity.this, "点击了 " + menuItem.getItemId(), Toast.LENGTH_SHORT).show();

}

});

dropPopMenu.setMenuList(getMenuList());

dropPopMenu.show(view);

}

3、显示图标

public void onClickPopIcon(View view) {

DropPopMenu dropPopMenu = new DropPopMenu(this);

dropPopMenu.setTriangleIndicatorViewColor(Color.WHITE);

dropPopMenu.setBackgroundResource(R.drawable.bg_drop_pop_menu_white_shap);

dropPopMenu.setItemTextColor(Color.BLACK);

dropPopMenu.setIsShowIcon(true);

dropPopMenu.setOnItemClickListener(new DropPopMenu.OnItemClickListener() {

@Override

public void onItemClick(AdapterView> adapterView, View view, int position, long id, MenuItem menuItem) {

Toast.makeText(MainActivity.this, "点击了 " + menuItem.getItemId(), Toast.LENGTH_SHORT).show();

}

});

dropPopMenu.setMenuList(getIconMenuList());

dropPopMenu.show(view);

}

private ListgetIconMenuList() {

Listlist = new ArrayList<>();

list.add(new MenuItem(R.drawable.ic_honor_level1, 1, "选项1"));

list.add(new MenuItem(R.drawable.ic_honor_level2, 2, "选项2"));

list.add(new MenuItem(R.drawable.ic_honor_level3, 3, "选项3"));

return list;

}