——為特定類型的子元素提供現(xiàn)成的查詢的類所采用的協(xié)議
——這些屬性表示暴露于可訪問系統(tǒng)中的數(shù)據(jù)，并在查詢匹配過程中可用崎苗。
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Descendant Element Queries
//常用的
@property(readonly, copy) XCUIElementQuery *activityIndicators;
@property(readonly, copy) XCUIElementQuery *alerts;
@property(readonly, copy) XCUIElementQuery *buttons;
@property(readonly, copy) XCUIElementQuery *cells;
@property(readonly, copy) XCUIElementQuery *collectionViews;
@property(readonly, copy) XCUIElementQuery *datePickers;
@property(readonly, copy) XCUIElementQuery *groups;
@property(readonly, copy) XCUIElementQuery *icons;
@property(readonly, copy) XCUIElementQuery *images;
@property(readonly, copy) XCUIElementQuery *keyboards;
@property(readonly, copy) XCUIElementQuery *pickers;
@property(readonly, copy) XCUIElementQuery *progressIndicators;
@property(readonly, copy) XCUIElementQuery *scrollViews;
@property(readonly, copy) XCUIElementQuery *searchFields;
@property(readonly, copy) XCUIElementQuery *segmentedControls;
@property(readonly, copy) XCUIElementQuery *secureTextFields;
@property(readonly, copy) XCUIElementQuery *sliders;
@property(readonly, copy) XCUIElementQuery *tabBars;
@property(readonly, copy) XCUIElementQuery *tableRows;
@property(readonly, copy) XCUIElementQuery *tableColumns;
@property(readonly, copy) XCUIElementQuery *textFields
@property(readonly, copy) XCUIElementQuery *textViews;
@property(readonly, copy) XCUIElementQuery *webViews;
@property(readonly, copy) XCUIElementQuery *window;;
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