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DependentLayout简介
DependentLayout意为相对位置布局,与DirectionalLayout相比较有更多的排布方式,每个组件可以指定相对于其他同级组件的位置,也可以指定相对于父组件的位置。可以使用DependentLayout布局来实现更加复杂的UI界面,同时也可以和其他布局相结合组合出需要的UI界面。
常用属性
相对于指定组件的位置属性
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="我是第一个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="我是第二个Text." ohos:text_size="50" ohos:above="$id:text_01" />
将ohos:above="$id:text_01" 改为ohos:below="$id:text_01",效果如下。
将ohos:above="$id:text_01" 改为ohos:left_of="$id:text_01",效果如下,其他自行验证。
子组件相对于父组件的位置属性
xmlns:ohos="http://schemas.huawei.com/res/ohos" ohos:height="match_parent" ohos:width="match_parent" ohos:alignment="center"> ohos:id="$+id:text_01" ohos:height="match_content" ohos:width="match_content" ohos:background_element="$graphic:background_dependent_layout" ohos:text="我是第一个Text." ohos:text_size="50" ohos:align_parent_bottom="true" /> ohos:id="$+id:text_02" ohos:height="match_content" ohos:width="match_content" ohos:background_element="$graphic:background_dependent_layout" ohos:text="我是第二个Text." ohos:text_size="50" ohos:align_parent_top="true" /> ohos:id="$+id:text_03" ohos:height="match_content" ohos:width="match_content" ohos:background_element="$graphic:background_dependent_layout" ohos:text="我是第三个Text." ohos:text_size="50" ohos:align_parent_right="true" /> ohos:id="$+id:text_04" ohos:height="match_content" ohos:width="match_content" ohos:background_element="$graphic:background_dependent_layout" ohos:text="我是第四个Text." ohos:text_size="50" ohos:center_in_parent="true" />
示例
xmlns:ohos="http://schemas.huawei.com/res/ohos" ohos:height="match_parent" ohos:width="match_parent"> ohos:id="$+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" />
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