| 在android开发中， 通过设置ConfigChanges属性可以使Activity捕捉设备状态变化，以下是可以被识别的内容：
CONFIG_FONT_SCALE
CONFIG_MCC
CONFIG_MNC
CONFIG_LOCALE
CONFIG_TOUCHSCREEN
CONFIG_KEYBOARD
CONFIG_NAVIGATION
CONFIG_ORIENTATION
设置方法：将下列字段用“|”符号分隔开，例如：“locale|navigation|orientation
”
| Value |
Description |
| “mcc“ |
The IMSI mobile country code (MCC) has changed — that is, a SIM hasbeen detected and updated the MCC.移动国家号码，由三位数字组成，每个国家都有自己独立的MCC，可以识别手机用户所属国家。 |
| “mnc“ |
The IMSI mobile network code (MNC) has changed — that is, a SIM hasbeen detected and updated the MNC.移动网号，在一个国家或者地区中，用于区分手机用户的服务商。 |
| “locale“ |
The locale has changed — for example, the user has selected a new language that text should be displayed in.用户所在地区发生变化。 |
| “touchscreen“ |
The touchscreen has changed. (This should never normally happen.) |
| “keyboard“ |
The keyboard type has changed — for example, the user has plugged in an external keyboard.键盘模式发生变化，例如：用户接入外部键盘输入。 |
| “keyboardHidden“ |
The keyboard accessibility has changed — for example, the user has slid the keyboard out to expose it.用户打开手机硬件键盘 |
| “navigation“ |
The navigation type has changed. (This should never normally happen.) |
| “orientation“ |
The screen orientation has changed — that is, the user has rotated the device.设备旋转，横向显示和竖向显示模式切换。 |
| “fontScale“ |
The font scaling factor has changed — that is, the user has selected a new global font size.全局字体大小缩放发生改变 |
在Activity中添加了 android:configChanges属性，目的是当所指定属性(Configuration Changes)发生改变时，通知程序调用 onConfigurationChanged()函数。
|
1、不设置Activity的android:configChanges时，切屏会重新调用各个生命周期，切横屏时会执行一次，切竖屏时会执行两次2、设置Activity的android:configChanges="orientation"时，切屏还是会重新调用各个生命周期，切横、竖屏时只会执行一次3、设置Activity的android:configChanges="orientation|keyboardHidden"时，切屏不会重新调用各个生命周期，只会执行onConfigurationChanged方法
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