LowStorage条件下的相关提示

[DESCRIPTION]
Low Storage条件下的相关提示
[SOLUTION]
1) 低于Min（50M，10%*data区大小）
mMemLowThreshold@alps\frameworks\base\services\java\com\android\server\Dev
iceStorageMonitorService.java），php?mod=tag&id=6090" target="_blank" class="relatedlink">Framework会送
Intent.ACTION_DEVICE_STORAGE_LOW intent出去，此时status bar上会有notification

2) 低于10M（
EXCEPTION_LOW_THRESHOLD_BYTES@alps\frameworks\base\services\java\com\andro
id\server\DeviceStorageMonitorService.java）, low storage导致的一些APP run
time异常，会show dialog提示

3) 低于5M
（FULL_THRESHOLD_BYTE
S@alps\frameworks\base\services\java\com\android\server\DeviceStorageMonit
orService.java），framework会送Intent.ACTION_DEVICE_STORAGE_FULL出去
4) 低于4M
CRITICAL_LOW_THRESHOLD_BYTES@alps\frameworks\base\services\java\com\androi
d\server\DeviceStorageMonitorService.java），每隔30s（
DEFAULT_CHECK_INTERVAL@alps\frameworks\base\services\java\com\android\serv
er\DeviceStorageMonitorService.java）会show “存储空间满”的dialog