Ben Lin d9ba201f59 Trapping backspace at EditText level to prevent popping Docs.
When the EditText is empty, pressing backspace on soft/hardware keyboard
will call on the EditText's OnKeyListener. Since we don't handle
backspace, it will then bubble up to Activity-level, which will then pop
the document stack due to the feature of using backspace as navigation.
This will trap the call correctly if the EditText is empty.

Bug: 30066261
Change-Id: I231507b9469bfa52478872491f1d2713a1ac58ba
2016-07-12 23:42:56 +00:00
2016-01-06 10:19:35 -07:00
2016-07-08 11:47:50 -07:00
2016-07-08 11:50:54 -07:00
2016-03-03 10:19:27 -08:00
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