ActionBar的简单使用

骑猪看日落 2022-09-09 12:52 161阅读 0赞

1 确保使用ActionBar

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAc2ljaHVhbnd3dw_size_20_color_FFFFFF_t_70_g_se_x_16][]

//getSupportActionBar().setDisplayHomeAsUpEnabled(true);启用箭头

2 设置启用菜单

//设置ActionBar菜单
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            getMenuInflater().inflate(R.menu.bottom_nav_menu, menu);
            return true;
        }

3 设置菜单项响应函数

//设置ActionBar菜单项响应
        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
            switch (item.getItemId()) {
                //actionbar navigation up 按钮
                case android.R.id.home:
                    finish();
                    break;
    
                case R.id.dashboard:
                    Toast.makeText(this, "公告板", Toast.LENGTH_LONG).show();
                    getSupportActionBar().setSubtitle("搜索");
                    break;
                case R.id.notifications:
                    Toast.makeText(this, "信息提示",Toast.LENGTH_LONG).show();
                    getSupportActionBar().setSubtitle("设置");
                    break;
                default:
                    break;
            }
            return true;
        }

看看效果

![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAc2ljaHVhbnd3dw_size_12_color_FFFFFF_t_70_g_se_x_16][] ![watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAc2ljaHVhbnd3dw_size_12_color_FFFFFF_t_70_g_se_x_16 1][]

[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAc2ljaHVhbnd3dw_size_20_color_FFFFFF_t_70_g_se_x_16]: /images/20220829/af1c340e704c4984a4998cd85435ff94.png
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAc2ljaHVhbnd3dw_size_12_color_FFFFFF_t_70_g_se_x_16]: https://img-blog.csdnimg.cn/20210901112449938.png?x-oss-process=image/watermark,type_ZHJvaWRzYW5zZmFsbGJhY2s,shadow_50,text_Q1NETiBAc2ljaHVhbnd3dw==,size_12,color_FFFFFF,t_70,g_se,x_16
[watermark_type_ZHJvaWRzYW5zZmFsbGJhY2s_shadow_50_text_Q1NETiBAc2ljaHVhbnd3dw_size_12_color_FFFFFF_t_70_g_se_x_16 1]: /images/20220829/3864354708b649bcba8618225658ba7d.png