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Email Address Validation in Android on EditText [duplicate]

How can we perform Email Validation on edittext in android ? I have gone through google & SO but I didn't find out a simple way to validate it. ...
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What's the difference between @JoinColumn and mappedBy when using a JPA @OneToMany association

... The annotation @JoinColumn indicates that this entity is the owner of the relationship (that is: the corresponding table has a column with a foreign key to the referenced table), whereas the attribute mappedBy indicates that the entity in this...
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How to remove all of the data in a table using Django

... Inside a manager: def delete_everything(self): Reporter.objects.all().delete() def drop_table(self): cursor = connection.cursor() table_name = self.model._meta.db_table sql = "DROP TABLE %s;" % (table_name, ...
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How to display double quotes(") Symbol in a TextView?

I'm trying to display some words in double quotes, in Text view in in xml file. But its not working. Pls help me. 9 Ans...
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What's the difference between lists and tuples?

... Apart from tuples being immutable there is also a semantic distinction that should guide their usage. Tuples are heterogeneous data structures (i.e., their entries have different meanings), while lists are homogeneous sequences. Tuples have stru...
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HTML form readonly SELECT tag/input

According to HTML specs, the select tag in HTML doesn't have a readonly attribute, only a disabled attribute. So if you want to keep the user from changing the dropdown, you have to use disabled . ...
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ViewPager with Google Maps API v2: mysterious black view

I have integrated the new google maps api v2 fragment in a view pager. When scrolling from the map fragment, a black view overlaps the adjacent fragments. Someone has solved? ...
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how to check if a form is valid programmatically using jQuery Validation Plugin

I have a form with a couple of buttons and I'm using jQuery Validation Plugin from http://jquery.bassistance.de/validate/ . I just want to know if there is any way I can check if the form is considered in valid state by jquery validation plugin from anywhere in my javascript code. ...
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Could not load file or assembly Microsoft.SqlServer.management.sdk.sfc version 11.0.0.0

I have installed MS SQL Server 2008 R2 and when I try to update model from database under EDMX file I am facing that error. ...
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Programmatically change the src of an img tag

How can I change the src attribute of an img tag using javascript? 9 Answers 9 ...