ADT lint checker says:
This handler class must be static or a leak may occur.
What is the meaning of a leak handler?
from http://tools.android.com/tips/lint-checks
HandlerleakSummary Ensures that Handler classes do not support reference to an external classPriority: 4/10 Severity: Warning Category: ProductivityAndroid Handler . MessageQueue Handler. , . , WeakReference .
Summary Ensures that Handler classes do not support reference to an external class
Priority: 4/10 Severity: Warning Category: Productivity
Android Handler . MessageQueue Handler. , . , WeakReference .