1 /*---------------------------创建数组------------------------------*/
2 //NSArray *array = [[NSArray alloc] initWithObjects:
3 @"One",@"Two",@"Three",@"Four",nil];
4
5 self.dataArray = array;
6 [array release];
7
8 //- (unsigned) Count;数组所包含对象个数；
9 NSLog(@"self.dataArray cound:%d",[self.dataArray count]);
10
11 //- (id) objectAtIndex: (unsigned int) index;获取指定索引处的对象;
12 NSLog(@"self.dataArray cound 2:%@",[self.dataArray objectAtIndex:2]);
13
14 /*--------------------------从一个数组拷贝数据到另一数组(可变数级)----------------------------*/
15
16 //arrayWithArray:
17 //NSArray *array1 = [[NSArray alloc] init];
18 NSMutableArray *MutableArray = [[NSMutableArray alloc] init];
19 NSArray *array = [NSArray arrayWithObjects:
20 @"a",@"b",@"c",nil];
21 NSLog(@"array:%@",array);
22 MutableArray = [NSMutableArray arrayWithArray:array];
23 NSLog(@"MutableArray:%@",MutableArray);
24
25 array1 = [NSArray arrayWithArray:array];
26 NSLog(@"array1:%@",array1);
27
28 //Copy
29
30 //id obj;
31 NSMutableArray *newArray = [[NSMutableArray alloc] init];
32 NSArray *oldArray = [NSArray arrayWithObjects:
33 @"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",nil];
34
35 NSLog(@"oldArray:%@",oldArray);
36 for(int i = 0; i < [oldArray count]; i++)
37 {
38 obj = [[oldArray objectAtIndex:i] copy];
39 [newArray addObject: obj];
40 }
41 //
42 NSLog(@"newArray:%@", newArray);
43 [newArray release];
44
45 //快速枚举
46
47 //NSMutableArray *newArray = [[NSMutableArray alloc] init];
48 NSArray *oldArray = [NSArray arrayWithObjects:
49 @"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",nil];
50 NSLog(@"oldArray:%@",oldArray);
51
52 for(id obj in oldArray)
53 {
54 [newArray addObject: obj];
55 }
56 //
57 NSLog(@"newArray:%@", newArray);
58 [newArray release];
59
60 //Deep copy
61
62 //NSMutableArray *newArray = [[NSMutableArray alloc] init];
63 NSArray *oldArray = [NSArray arrayWithObjects:
64 @"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",nil];
65 NSLog(@"oldArray:%@",oldArray);
66 newArray = (NSMutableArray*)CFPropertyListCreateDeepCopy(kCFAllocatorDefault, (CFPropertyListRef)oldArray, kCFPropertyListMutableContainers);
67 NSLog(@"newArray:%@", newArray);
68 [newArray release];
69
70 //Copy and sort
71
72 //NSMutableArray *newArray = [[NSMutableArray alloc] init];
73 NSArray *oldArray = [NSArray arrayWithObjects:
74 @"b",@"a",@"e",@"d",@"c",@"f",@"h",@"g",nil];
75 NSLog(@"oldArray:%@",oldArray);
76 NSEnumerator *enumerator;
77 enumerator = [oldArray objectEnumerator];
78 id obj;
79 while(obj = [enumerator nextObject])
80 {
81 [newArray addObject: obj];
82 }
83 [newArray sortUsingSelector:@selector(compare:)];
84 NSLog(@"newArray:%@", newArray);
85 [newArray release];
86
87 /*---------------------------切分数组------------------------------*/
88
89 //从字符串分割到数组－ componentsSeparatedByString:
90 NSString *string = [[NSString alloc] initWithString:@"One,Two,Three,Four"];
91 NSLog(@"string:%@",string);
92 NSArray *array = [string componentsSeparatedByString:@","];
93 NSLog(@"array:%@",array);
94 [string release];
95
96 //从数组合并元素到字符串- componentsJoinedByString:
97 NSArray *array = [[NSArray alloc] initWithObjects:@"One",@"Two",@"Three",@"Four",nil];
98 NSString *string = [array componentsJoinedByString:@","];
99 NSLog(@"string:%@",string);
100
101 /*******************************************************************************************
102 NSMutableArray
103 /*---------------给数组分配容量----------------*/
104 //NSArray *array;
105 array = [NSMutableArray arrayWithCapacity:20];
106
107 /*--------------在数组末尾添加对象----------------*/
108 //- (void) addObject: (id) anObject;
109 //NSMutableArray *array = [NSMutableArray arrayWithObjects:
110 @"One",@"Two",@"Three",nil];
111 [array addObject:@"Four"];
112 NSLog(@"array:%@",array);
113
114 /*--------------删除数组中指定索引处对象----------------*/
115 //-(void) removeObjectAtIndex: (unsigned) index;
116 //NSMutableArray *array = [NSMutableArray arrayWithObjects:
117 @"One",@"Two",@"Three",nil];
118 [array removeObjectAtIndex:1];
119 NSLog(@"array:%@",array);
120
121 /*-------------数组枚举---------------*/
122 //- (NSEnumerator *)objectEnumerator;从前向后
123 //NSMutableArray *array = [NSMutableArray arrayWithObjects:
124 @"One",@"Two",@"Three",nil];
125 NSEnumerator *enumerator;
126 enumerator = [array objectEnumerator];
127
128 id thingie;
129 while (thingie = [enumerator nextObject]) {
130 NSLog(@"thingie:%@",thingie);
131 }
132
133 //- (NSEnumerator *)reverseObjectEnumerator;从后向前
134 //NSMutableArray *array = [NSMutableArray arrayWithObjects:
135 @"One",@"Two",@"Three",nil];
136 NSEnumerator *enumerator;
137 enumerator = [array reverseObjectEnumerator];
138
139 id object;
140 while (object = [enumerator nextObject]) {
141 NSLog(@"object:%@",object);
142 }
143
144 //快速枚举
145 //NSMutableArray *array = [NSMutableArray arrayWithObjects:
146 @"One",@"Two",@"Three",nil];
147 for(NSString *string in array)
148 {
149 NSLog(@"string:%@",string);
150 }
