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Diffrence between textfieldshouldendediting and textfieldDidendediting in iPhone

What is the diffrence between textFieldShouldendEditing and textfieldDidEndEditing methods? and when will use these methods.

Answer 1

From documentation:

textFieldShouldendEditing:

This method is called when the text field is asked to resign the first responder status. This might occur when your application asks the text field to resign focus or when the user tries to change the editing focus to another control. Before the focus actually changes, however, the text field calls this method to give your delegate a chance to decide whether it should.

textfieldDidEndEditing:

This method is called after the text field resigns its first responder status. You can use this method to update your delegate’s state information. For example, you might use this method to hide overlay views that should be visible only while editing.

So, the textFieldShouldendEditing:method will be called before textfieldDidEndEditing:method