IOS TextField Proxy method invocation sequencing (RPM)

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Today through their own study to the TextField agent methods are listed, successively call order to do a bit of verification.

To do this, open the interface--click textfield--> input ' abc ' and click ' X ' to clear the button-click on the keyboard ' wrap '-click ' Finish '

Log logs:

4

2

4

1

1

1

5

7

6

3

#pragma  Mark-textfield Delegate  -(BOOL) TextField: (Uitextfield *) TextField Shouldchangecharactersinrange: ( Nsrange) Range replacementstring: (NSString *) string  {      NSLog (@ "1");//The input text is always monitored      return YES;  }  -(void) textfielddidbeginediting: (Uitextfield *) TextField  {      NSLog (@ "2");//Prepare  to start the input text field will be the first responder  }  -(void) textfielddidendediting: (Uitextfield *) TextField  {      NSLog (@ "3");//call when text is completely finished editing  }  -(BOOL) textfieldshouldbeginediting: (Uitextfield *) TextField  {      NSLog (@ "4");//Returns a BOOL value that specifies whether the sequential text field begins editing      return YES;  }  -(BOOL) Textfieldshouldclear: (Uitextfield *) TextField  {      NSLog (@ "5");//click ' X ' to clear the button to call      return YES;  -(BOOL) textfieldshouldendediting: (Uitextfield *) TextField  {      NSLog (@ "6");//returns BOOL value, Specifies whether the text field is allowed to end editing, and when the edit is finished, the text field will yield the first responder      return YES;  -(BOOL) Textfieldshouldreturn: (Uitextfield *) TextField  {      NSLog (@ "7");//Click on the keyboard ' wrap ' to invoke      return YES;  

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IOS TextField Proxy method invocation sequencing (RPM)