iOS Development--animation---Chronograph timer

Timer Timer

To design a timing timer:

1, create variable array, hold 0~100 number

2, Create a 0~100 number with a for loop and put it in a mutable array

3, Create timer: Create timer: Parameter 1: set time interval parameter 2 target : Timer binding method supplemental information , is generally empty repeat

_timer = [nstimerscheduledtimerwithtimeinterval:0.1target: Self selector:@selector(outPut) userInfo: Nil repeats : YES ];

4, Timer Stop method: If statement to determine whether the timer is empty

if (_timer ! = Nil)

5, Read Data method: Create static variable, use index to read data

static int count =0;

nsstring * str =[_array objectatindex: Count];

NSLog (@ "-----%@",str);

Count + +;

6, prevent array from overstepping

if (count>) {

count= 0 ;

}

7, timer destruction

[_timer invalidate];

iOS Development--animation---Chronograph timer