IOS-----Xcode-debug Try

In Xcode, when you debug, you can't see the value of a variable directly, like Eclipse, or vs those integrated development. So how do you look at Xcode's variables while debugging?

There are some ways.

1. Create a new single View App

Add some code to the Viewdidload:

-(void) viewdidload{    [Super Viewdidload];        Nsdictionary *dic = [nsdictionary dictionarywithobjectsandkeys:@ "value1", @ "Key1",                         @ "+", @ "age", @ "Rongfzh", @ " Name ", nil];        UILabel *label = [[UILabel alloc] init];    Label.frame = CGRectMake (+, +, +);    Label.text = [dic objectforkey:@ "name"];    [Self.view Addsubview:label];}

Make a breakpoint on the last line.

2. "Po": Print object is printed out by the Print Object command.

Command+r Debug Run, on the debug Console on the LLDB input po dic Enter, shown as follows:

This will print out the contents of the dictionary.

Try printing the label again.

(LLDB) PO Label

(UILabel *) $ $ = 0x06a8bdd0 <UILabel:0x6a8bdd0; frame = (20 40; 250 60); Text = ' Rongfzh '; Clipstobounds = YES; userinteractionenabled = NO; Layer = <CALayer:0x6a8be90>>

The label's information is also printed out.

3. Print command

Print (char*) [[dic description] cString]

(char *) $4 = 0x06d79760 "{\ n age = 28;\n Key1 = value1;\n name = rongfzh;\n}"

Prints the object's Retaincount, but the object is recycled

(LLDB) print (int) [Label Retaincount]

(int) $ = 1

IOS-----Xcode-debug Try