Three reasons for custom development of iPad apps

Source: Internet
Author: User

Three reasons for custom development of iPad apps

By in-depth analysis of the actual situation of iPad devices and iPad application systems, the existing information application systems developed based on PC systems are directly migrated to iPad devices, there are the following highlights. It is also the software developed based on the PC system. To migrate to mobile terminals such as iPad, three reasons for custom development are often required:


1,The large differences in the display screen size lead to poor function operations and information display of the existing system.

If the original system is not developed in an adaptive manner during the design and development process, the following problems are inevitable:

1) Some functions cannot be operated.Because the system layout of the original design is large, the functional menus, buttons, and data areas beyond the visible area of the screen cannot be seen after the display to the iPad device with a small screen size, as a result, the system functions cannot be operated, seriously restricting the availability of the system on iPad devices.

2) The core display information is incomplete.Generally, an application system developed based on the PC version, including theme images, function menus, and Operation navigation, is concentrated on the top or left of the layout; the operation data, information charts, and query results to be displayed are in the middle, right, and lower areas. After the iPad device is transplanted, this area cannot be displayed because it exceeds the screen size, leading to incomplete display of the system's core operations, seriously affecting user perception, it may even affect the necessity of porting the system to the iPad.

If all the original systems are developed in an adaptive way during the design and development process, the adaptive interface is scaled down and displayed in a small display space, which easily leads to the following problems:

1) after automatic scaling, the entire layout of the system interface is easily distorted, affecting the overall layout and aesthetic feeling of the system.For example, if the system theme icon is scaled down, the functional navigation bar may be folded into multiple rows, the menu items with Long entries may be incomplete, and the display ratio of images and tables may be distorted.

2) After automatic scaling, the reduced text and charts become difficult to identify, affecting users' operation and use of the system, and even affecting the operability of the system.For example, a function item that is squashed is difficult to accurately control due to the narrowing of the response area, resulting in a one-to-two attack or another attack (if you want to operate function 1, you have misperformed function 2 ); the automatically scaled fonts are too small to recognize; The automatically scaled charts are too small or distorted to recognize.


2,Because of the huge differences in operating methods, PC-based application development systems are difficult to operate on the iPad.

The current mainstream PC system is operated by keyboard input and mouse clicking.

As we all know, the iPad uses the gesture operation method simulated by the multi-touch event model.If you migrate an application system developed based on a PC device to an iPad device, the operation may be too slow or even awkward.First, the iPad only supports mouse operations to retain basic compatibility, and the mouse operations are not complete and friendly. Second, gesture operations that are unique to the iPad are not supported (custom development is required for gesture operations ).

For example, in PC application system development, if you need to provide the operation response function, you need to set the control hotspot and bind a fixed click, mousedown, mouseup, mousemove, and other mouse events, otherwise, operations cannot be performed. In the iPad application system, these operation events are basically replaced by other operations.

Mainstream iPad operations, such as: Single-finger touch, double-click, multi-finger separation, closure, rotation, multi-finger single-finger exit, and other special effects, application systems developed based on PCs are not available. Therefore, users may be awkward when operating the system.


3,The difference in browser software leads to the failure of some functions of PC-based systems on iPad devices.

The iPad browser does not support scroll bars.A pc-based application system displays a large amount of information, and the browser automatically and extensively applies vertical and horizontal scroll bars, in order to prompt users that there is not fully displayed content outside the current screen; and iPad Browsers Do not have a scroll bar, so content beyond the display size can easily mislead users, the current display has completely ended, affecting user perception.

The iPad browser does not support function plug-ins that are frequently used in PC application systems.. Such as flash, graphics/image plug-ins, and report plug-ins. Functions of these plug-ins cannot be displayed on the iPad.

The iPad browser does not support CSS fixed LayoutThe page is usually stuck on the first screen, so it cannot be turned down or zoomed in or out. This will seriously affect the overall layout, layout style, and functional operations of the system.

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