#在蓝懿学习iOSd的日子 #

#在蓝懿学习iOS的日子 # So we're going to review it today, the way we learned this time:

One, the conversion of numbers and texts I structure:

1. Convert the numbers into text:

L.text = [@ (X) stringvalue;

2. W converts the text into characters:

int a = L.text.intvalue;

Second, the concatenation of strings:

NSString * str1 = @ "abc";

nsstring * str2 = [nsstring string];

STR2 = @ "def";

1. Method One: Connect two strings together

nsstring * str3 = [nsstring stringwithformat:@ "%@%@", Str1,str2]

nsstring * STR4 = @ "4";

float pi =3.1415926535;

STR4 = [@ (pi) stringvalue];

STR4 = [nsstring stringwithformat:@ "%f", pi];

2, method Two: Connect a string behind another string;

nsstring * STR5 = [str1 stringbyappendingstring: str2];

NSLog(@ "STR5 =%@", STR5);

3, method Two: Is the method one and method two combination version:

nsstring * STR6 = [str1 stringbyappendingformat:@ "%@%f", str2,3.14];

The method is used and understood by the use of, to be more effective, before it can be used properly, please share the encouragement.

#在蓝懿学习iOSd的日子 #