标签：
/********NSArray**********/
NSObject *obj = [NSObject new];
NSObject *obj1 = [NSObject new];
Car *car = [Car new];
// 1.创建数组
NSArray *arr1 = [NSArray arrayWithObjects:@"帅锋",@"xingchen",@"honghai",@"c",obj,car,nil];// 使用arrayWithObjects:来创建数组的时候需要以nil结尾，代表数组结束，所以数组中不能存放nil，另外nil并不是数组的元素
//NSArray *arr1 = @[@"张三",@"xingchen",@"honghai",@"fusong",obj,car]; // NSArray中只能存放对象，并且对对象的类别没有统一要求
NSLog(@"arr1 >>>> %@", arr1);
// 2.访问数组
//arr1[4] = obj1; NSArray是不可变数组，不能更改数组中的元素
NSLog(@"arr1[4] >>>> %@", arr1[4]);
NSLog(@"arr1[5] >>>> %@", [arr1 objectAtIndex:0]);
// 3.长度
NSLog(@"arr1‘length >>> %ld", [arr1 count]);
// 4.是否包含对象 contains 包含容纳
if ([arr1 containsObject:obj1]) {
NSLog(@"YES");
} else {
NSLog(@"NO");
}
// 5.遍历数组的方式
// 5.1 for循环
// 5.2 枚举器
NSArray *arr2 = @[@"junkao",@"chunyang"];
NSEnumerator *enumrator = [arr2 objectEnumerator];
id object = [enumrator nextObject];
object = [enumrator nextObject];
object = [enumrator nextObject];
NSLog(@"object >>> %@", object);
NSLog(@"object >>> %@", arr1[0]);
// 5.3 快速枚举
// 快速枚举语法：for(对象类型 中间变量 in 需要遍历的数组)
for (id arrObj in arr1) {
NSLog(@"arrobj >>>> %@ <<<<", arrObj);
}
Car *car1 = [Car new];
Car *car2 = [Car new];
Car *car3 = [Car new];
NSArray *arr3 = @[car1, car2, car3];
for (Car *car in arr3) {
NSLog(@"car >>>> %@", car);
}
// 6.数组连接
NSArray *arr4 = [arr1 arrayByAddingObject:@"yuanao"];
NSArray *arr5 = [arr1 arrayByAddingObjectsFromArray:arr2];
NSLog(@"arr1 >>> %@", arr1);
NSLog(@"arr2 >>> %@", arr2);
NSLog(@"arr4 >>> %@", arr4);
NSLog(@"arr5 >>> %@", arr5);
// 7.字符串分割
NSString *names = @"guoyu,zhangting,gejing,chaoya";
NSArray *nameArr = [names componentsSeparatedByString:@","];//对字符串发消息componentsSeparatedByString 用‘，’分隔成数组
NSLog(@"nameArr >>> %@", nameArr);
NSString *names2 = [nameArr componentsJoinedByString:@"-"];//数组变成字符串
NSLog(@"names2 >>> %@", names2);
/**********NSMutableArray***********/
NSMutableArray *mtArr = [NSMutableArray arrayWithArray:@[@"dongdong",@"王帅"]];//arrayWithArray 用一个不可变数组变成一个可变数组 stringWithString 用一个不可变字符串变成一个可变字符串
mtArr[0] = @"qilin";
NSLog(@"mtArr >>> %@", mtArr);
NSLog(@"mtArr >>>> %@", [mtArr objectAtIndex:1]);
[mtArr addObject:@"litao"];
NSLog(@"mtArr >>> %@", mtArr);
[mtArr addObjectsFromArray:@[@"awfeawfaw",@"aefwfawfewf"]];
[mtArr removeObject:@"qilin"];
NSLog(@"mtArr >>> %@", mtArr);
// 指定范围删除
//[mtArr removeObject:@"qilin" inRange:<#(NSRange)#>];
// 在指定位置插入新元素
//[mtArr insertObject:<#(id)#> atIndex:<#(NSUInteger)#>]
// 替换
//[mtArr replaceObjectAtIndex:<#(NSUInteger)#> withObject:<#(id)#>]
2015-07-19 20:50:14.339 testNSArray[12353:1834956] arr1 >>>> (
"\U5e05\U950b",
xingchen,
honghai,
c,
"<NSObject: 0x10030a030>",
"\U6211\U662f\U4e00\U8f86\U8f66"
)
2015-07-19 20:50:14.340 testNSArray[12353:1834956] arr1[4] >>>> <NSObject: 0x10030a030>
2015-07-19 20:50:16.921 testNSArray[12353:1834956] arr1[5] >>>> 张三
2015-07-19 20:50:16.922 testNSArray[12353:1834956] arr1‘length >>> 6
2015-07-19 20:50:16.922 testNSArray[12353:1834956] NO
2015-07-19 20:50:16.925 testNSArray[12353:1834956] object >>> (null)
2015-07-19 20:50:16.925 testNSArray[12353:1834956] object >>> 张三
2015-07-19 20:50:21.880 testNSArray[12353:1834956] arrobj >>>> 张三 <<<<
2015-07-19 20:50:23.131 testNSArray[12353:1834956] arrobj >>>> xingchen <<<<
2015-07-19 20:50:24.416 testNSArray[12353:1834956] arrobj >>>> honghai <<<<
2015-07-19 20:50:25.617 testNSArray[12353:1834956] arrobj >>>> c <<<<
2015-07-19 20:50:27.186 testNSArray[12353:1834956] arrobj >>>> <NSObject: 0x10030a030> <<<<
2015-07-19 20:50:30.168 testNSArray[12353:1834956] arrobj >>>> 我是一辆车 <<<<
2015-07-19 20:50:30.169 testNSArray[12353:1834956] car >>>> 我是一辆车
2015-07-19 20:50:30.169 testNSArray[12353:1834956] car >>>> 我是一辆车
2015-07-19 20:50:30.169 testNSArray[12353:1834956] car >>>> 我是一辆车
2015-07-19 20:50:30.169 testNSArray[12353:1834956] arr1 >>> (
"\U5e05\U950b",
xingchen,
honghai,
c,
"<NSObject: 0x10030a030>",
"\U6211\U662f\U4e00\U8f86\U8f66"
)
2015-07-19 20:50:30.169 testNSArray[12353:1834956] arr2 >>> (
junkao,
chunyang
)
2015-07-19 20:50:30.169 testNSArray[12353:1834956] arr4 >>> (
"\U5e05\U950b",
xingchen,
honghai,
c,
"<NSObject: 0x10030a030>",
"\U6211\U662f\U4e00\U8f86\U8f66",
yuanao
)
2015-07-19 20:50:30.169 testNSArray[12353:1834956] arr5 >>> (
"\U5e05\U950b",
xingchen,
honghai,
c,
"<NSObject: 0x10030a030>",
"\U6211\U662f\U4e00\U8f86\U8f66",
junkao,
chunyang
)
2015-07-19 20:50:30.169 testNSArray[12353:1834956] nameArr >>> (
guoyu,
zhangting,
gejing,
chaoya
)
2015-07-19 20:50:30.170 testNSArray[12353:1834956] names2 >>> guoyu-zhangting-gejing-chaoya
2015-07-19 21:54:45.381 testNSArray[12353:1834956] mtArr >>> (
qilin,
"\U738b\U5e05"
)
2015-07-19 21:54:45.382 testNSArray[12353:1834956] mtArr >>>> 王帅
2015-07-19 21:54:45.382 testNSArray[12353:1834956] mtArr >>> (
qilin,
"\U738b\U5e05",
litao
)
2015-07-19 21:54:45.382 testNSArray[12353:1834956] mtArr >>> (
"\U738b\U5e05",
litao,
awfeawfaw,
aefwfawfewf
)
标签：
原文地址：http://www.cnblogs.com/10-19-92/p/4659932.html
