Android layout view id name issue -

i faced issue when named view android:id="@+id/textview1" , code

textview tv1 = (textview) findviewbyid(r.id.textview1); 

was returning wrong view though there no warnings given naming convention. when changed name text_view_1 worked.

i know usual naming convention small case android:id="@+id/text_view_1" or camel case android:id="@+id/textview1"

is there documented resource explains issue or answer it? want know m stands in variable name see in open source code. e.g.

textview mtextview; 

its noob question couldn't find answer anywhere.

try clean , build project.

android coding syle guide states:

• non-public, non-static field names start m.
• static field names start s.
• other fields start lower case letter.
• public static final fields (constants) all_caps_with_underscores.

it private imagebutton mbuttonstart; or private static ssingletonthing;

that convention way required used if want contribute android sourcecode, can write own apps in style.