鴻蒙 HarmonyOSJava UI之DependentLayout布局示例
https://harmonyos.51cto.com/#zz
DependentLayout簡介
DependentLayout意為相對位置布局,與DirectionalLayout相比較有更多的排布方式,每個組件可以指定相對于其他同級組件的位置,也可以指定相對于父組件的位置。可以使用DependentLayout布局來實現更加復雜的UI界面,同時也可以和其他布局相結合組合出需要的UI界面。
常用屬性
相對于指定組件的位置屬性
- xmlns:ohos="http://schemas.huawei.com/res/ohos"
- ohos:height="match_parent"
- ohos:width="match_parent"
- ohos:alignment="center">
- ohos:id="$+id:text_01"
- ohos:height="match_content"
- ohos:width="match_content"
- ohos:background_element="$graphic:background_dependent_layout"
- ohos:text="我是第一個Text."
- ohos:text_size="50"
- />
- ohos:id="$+id:text_02"
- ohos:height="match_content"
- ohos:width="match_content"
- ohos:background_element="$graphic:background_dependent_layout"
- ohos:text="我是第二個Text."
- ohos:text_size="50"
- ohos:above="$id:text_01"
- />
將ohos:above="$id:text_01" 改為ohos:below="$id:text_01",效果如下。
將ohos:above="$id:text_01" 改為ohos:left_of="$id:text_01",效果如下,其他自行驗證。
子組件相對于父組件的位置屬性
- xmlns:ohos="http://schemas.huawei.com/res/ohos"
- ohos:height="match_parent"
- ohos:width="match_parent"
- ohos:alignment="center">
- ohos:id="$+id:text_01"
- ohos:height="match_content"
- ohos:width="match_content"
- ohos:background_element="$graphic:background_dependent_layout"
- ohos:text="我是第一個Text."
- ohos:text_size="50"
- ohos:align_parent_bottom="true"
- />
- ohos:id="$+id:text_02"
- ohos:height="match_content"
- ohos:width="match_content"
- ohos:background_element="$graphic:background_dependent_layout"
- ohos:text="我是第二個Text."
- ohos:text_size="50"
- ohos:align_parent_top="true"
- />
- ohos:id="$+id:text_03"
- ohos:height="match_content"
- ohos:width="match_content"
- ohos:background_element="$graphic:background_dependent_layout"
- ohos:text="我是第三個Text."
- ohos:text_size="50"
- ohos:align_parent_right="true"
- />
- ohos:id="$+id:text_04"
- ohos:height="match_content"
- ohos:width="match_content"
- ohos:background_element="$graphic:background_dependent_layout"
- ohos:text="我是第四個Text."
- ohos:text_size="50"
- ohos:center_in_parent="true"
- />
示例
- xmlns:ohos="http://schemas.huawei.com/res/ohos"
- ohos:height="match_parent"
- ohos:width="match_parent">
- ohos:id="$+id:text_01"
- ohos:height="70vp"
- ohos:width="match_parent"
- ohos:background_element="#CCCCCC"
- ohos:text="Header"
- ohos:text_alignment="center"
- ohos:text_size="50"
- ohos:align_parent_top="true"
- />
- ohos:id="$+id:text_02"
- ohos:height="match_parent"
- ohos:width="100vp"
- ohos:background_element="#5C6E71"
- ohos:text="LEFT"
- ohos:text_alignment="center"
- ohos:text_size="50"
- ohos:align_parent_left="true"
- ohos:below="$id:text_01"
- />
- ohos:id="$+id:text_03"
- ohos:height="match_parent"
- ohos:width="100vp"
- ohos:background_element="#5C6E71"
- ohos:text="Right"
- ohos:text_alignment="center"
- ohos:text_size="50"
- ohos:align_parent_right="true"
- ohos:below="$id:text_01"
- />
- ohos:id="$+id:text_05"
- ohos:height="match_parent"
- ohos:width="match_parent"
- ohos:background_element="#16CCB7"
- ohos:text_alignment="center"
- ohos:text="Center"
- ohos:text_size="50"
- ohos:right_margin="100vp"
- ohos:below="$id:text_01"
- ohos:right_of="$id:text_02"
- />
- ohos:id="$+id:text_04"
- ohos:height="50vp"
- ohos:width="match_parent"
- ohos:background_element="#CCCCCC"
- ohos:text="Footer"
- ohos:text_size="50"
- ohos:align_parent_bottom="true"
- />
至此,我們已經了解并會使用HarmonyOS Java UI的六大布局,下一節我們將對六大布局進行總結,并將前面沒有提到的各類屬性做詳細的歸納。
https://harmonyos.51cto.com/#zz