uses-configuration,可以指定应用程序支持的每个输入机制的组合.可以指定以下输入设备的任意组合.
(1). android:reqFiveWayNav
true" if it does, and "
false" if not. A five-way control is one that can move the selection up, down, right, or left, and also provides a way of invoking the current selection. It could be a D-pad (directional pad), trackball, or other device.
If an application requires a directional control, but not a control of a particular type, it can set this attribute to "true" and ignore the reqNavigation attribute. However, if it requires a particular type of directional control, it can ignore this attribute and set reqNavigation instead.
(2). android:reqHardKeyboard (是否支持硬件键盘)
Whether or not the application requires a hardware keyboard — "true" if it does, and "false" if not.
(3).android:reqKeyboardType
reqHardKeyboard attribute to "
true".
The value must be one of the following strings:
| Value | Description |
|---|---|
"undefined" | The application does not require a keyboard. (A keyboard requirement is not defined.) This is the default value. |
"nokeys" | The application does not require a keyboard. |
"qwerty" | The application requires a standard QWERTY keyboard. |
"twelvekey" | The application requires a twelve-key keypad, like those on most phones — with keys for the digits from 0 through 9 plus star (*) and pound (#) keys. |
(4).android:reqNavigation
The navigation device required by the application, if any. The value must be one of the following strings:
| Value | Description |
|---|---|
"undefined" | The application does not require any type of navigation control. (The navigation requirement is not defined.) This is the default value. |
"nonav" | The application does not require a navigation control. |
"dpad" | The application requires a D-pad (directional pad) for navigation. |
"trackball" | The application requires a trackball for navigation. |
"wheel" | The application requires a navigation wheel. |
(5).android:reqTouchScreen
| Value | Description |
|---|---|
"undefined" | The application doesn't require a touch screen. (The touch screen requirement is undefined.) This is the default value. |
"notouch" | The application doesn't require a touch screen. |
"stylus" | The application requires a touch screen that's operated with a stylus. |
"finger" | The application requires a touch screen that can be operated with a finger. |

本文深入探讨了Android应用中使用的配置输入机制,包括五向导航控制、硬件键盘、键盘类型、导航设备和触屏类型。了解这些配置如何帮助开发者针对不同设备优化用户体验。
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