hyphenate_SDK3.0  3.0.1
hyphenatejavaIMSDK
Public 成员函数 | 静态 Protected 属性 | 所有成员列表
com.hyphenate.util.DeviceUuidFactory类 参考

Public 成员函数

 DeviceUuidFactory (Context context)
 
UUID getDeviceUuid ()
 

静态 Protected 属性

static final String PREFS_FILE = "device_id.xml"
 
static final String PREFS_DEVICE_ID = "device_id"
 
static UUID uuid
 

详细描述

Tries to get the device ID as a UUID and fallsback to a generated UUID value if it doesn't work.

参见
http ://stackoverflow.com/questions/2785485/is-there-a-unique-android-device -id

成员函数说明

UUID com.hyphenate.util.DeviceUuidFactory.getDeviceUuid ( )

Returns a unique UUID for the current android device. As with all UUIDs, this unique ID is "very highly likely" to be unique across all Android devices. Much more so than ANDROID_ID is.

The UUID is generated by using ANDROID_ID as the base key if appropriate, falling back on TelephonyManager.getDeviceID() if ANDROID_ID is known to be incorrect, and finally falling back on a random UUID that's persisted to SharedPreferences if getDeviceID() does not return a usable value.

In some rare circumstances, this ID may change. In particular, if the device is factory reset a new device ID may be generated. In addition, if a user upgrades their phone from certain buggy implementations of Android 2.2 to a newer, non-buggy version of Android, the device ID may change. Or, if a user uninstalls your app on a device that has neither a proper Android ID nor a Device ID, this ID may change on reinstallation.

Note that if the code falls back on using TelephonyManager.getDeviceId(), the resulting ID will NOT change after a factory reset. Something to be aware of.

Works around a bug in Android 2.2 for many devices when using ANDROID_ID directly.

参见
http://code.google.com/p/android/issues/detail?id=10603
返回
a UUID that may be used to uniquely identify your device for most purposes.

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