# Design Strategies for Mobile Click-and-Load Waiting Scenarios
## 2 Related Work  
### Classification of Loading Waiting Scenarios  
Loading waiting scenarios refer to the waiting states experienced by users during interactions with a system caused by content loading, data requests, or interface transitions. In user experience research, the classification of waiting scenarios has received widespread attention, with related studies exploring multiple dimensions such as visual feedback, loading symbol optimization [8], and interface layout [9]. In the existing literature, the visual feedback types for loading screens primarily include countdowns [14; 15], progress bars [16; 17; 18; 19; 20], rotating buttons [21; 22], passive animations [23], interactive animations [23], and skeleton screens [24]. However, despite these studies providing a theoretical basis for understanding users' psychological and behavioral responses while waiting, there remains a lack of research that systematically classifies and deeply analyzes loading waiting scenarios from the structural perspective of page-level transitions. Against this backdrop, the current study further focuses on loading waiting scenarios in mobile page click-to-transition contexts.  
This study surveyed 38 mainstream mobile applications under systems such as OPPO, Huawei, and iOS (as shown in Figure 2), and based on the intentions of data requests triggered by users during operations, loading was classified based on waiting scenarios into four categories: app launch loading, click-to-load, pull-to-refresh, and uploads/downloads. Among these, click-to-load and pull-to-refresh processes both belong to page-level waiting scenarios, with the specific classification depicted in Figure 2.  
This study focuses on the click-to-load scenario within page-level waiting, which is a context frequently encountered during everyday mobile application use. Such scenarios are typically triggered when users click on interactive elements, which, in turn, initiate page transitions and content loading. Based on the hierarchical structure of pages, click-to-load scenarios can be further subdivided into three typical transition types (as shown in Figure 3):  
1. Tab page transitions refer to lateral switches between pages at the same level, commonly observed in the functional tabs of a home page's bottom navigation bar. When  
Figure 2: Classification of waiting scenarios based on page hierarchy.  
a user clicks on a tab--such as \"Home\"--thereby triggering a loading operation, the system updates the page content to display the most recent data.
2. Content page transitions involve hierarchical changes between parent and subordinate pages. This is often seen in content-centric applications, such as those featuring videos or illustrated notes, where users click on titles, images, or card modules to navigate from an information aggregation page to a subpage that presents detailed content.
3. Half-screen transitions entail the partial overlay of a new interface on the existing page, which is a pattern frequently found in interactive zones like comment sections or pop-up detail panels. This type of transition typically appears as a floating layer that does not completely obscure the underlying page and supports localized refreshes to update its content.  
Through this structured classification, the present study establishes a clear contextual foundation for the subsequent evaluation of click-to-load waiting experiences and the development of corresponding design strategies.  
Figure 3: Click-to-load waiting scenario classification.