1 @interface ViewController ()<UITextFieldDelegate>
2 {
3 NSString *previousTextFieldContent;
4 UITextRange *previousSelection;
5 }
6 @end
1 - (void)viewDidLoad
2 {
3 [super viewDidLoad];
4 // Do any additional setup after loading the view, typically from a nib.
5 self.textField.delegate = self;
6 [self.textField addTarget:self action:@selector(formatPhoneNumber:) forControlEvents:UIControlEventEditingChanged];
7 }
1 - (void)formatPhoneNumber:(UITextField*)textField
2 {
3 NSUInteger targetCursorPosition =
4 [textField offsetFromPosition:textField.beginningOfDocument
5 toPosition:textField.selectedTextRange.start];
6 NSLog(@"targetCursorPosition:%li", (long)targetCursorPosition);
7 // nStr表示不带空格的号码
8 NSString* nStr = [textField.text stringByReplacingOccurrencesOfString:@" " withString:@""];
9 NSString* preTxt = [previousTextFieldContent stringByReplacingOccurrencesOfString:@" "
10 withString:@""];
11
12 char editFlag = 0;// 正在执行删除操作时为0，否则为1
13
14 if (nStr.length <= preTxt.length) {
15 editFlag = 0;
16 }
17 else {
18 editFlag = 1;
19 }
20
21 // textField设置text
22 if (nStr.length > 11)
23 {
24 textField.text = previousTextFieldContent;
25 textField.selectedTextRange = previousSelection;
26 return;
27 }
28
29 // 空格
30 NSString* spaceStr = @" ";
31
32 NSMutableString* mStrTemp = [NSMutableString new];
33 int spaceCount = 0;
34 if (nStr.length < 3 && nStr.length > -1)
35 {
36 spaceCount = 0;
37 }else if (nStr.length < 7 && nStr.length >2)
38 {
39 spaceCount = 1;
40
41 }else if (nStr.length < 12 && nStr.length > 6)
42 {
43 spaceCount = 2;
44 }
45
46 for (int i = 0; i < spaceCount; i++)
47 {
48 if (i == 0) {
49 [mStrTemp appendFormat:@"%@%@", [nStr substringWithRange:NSMakeRange(0, 3)], spaceStr];
50 }else if (i == 1)
51 {
52 [mStrTemp appendFormat:@"%@%@", [nStr substringWithRange:NSMakeRange(3, 4)], spaceStr];
53 }else if (i == 2)
54 {
55 [mStrTemp appendFormat:@"%@%@", [nStr substringWithRange:NSMakeRange(7, 4)], spaceStr];
56 }
57 }
58
59 if (nStr.length == 11)
60 {
61 [mStrTemp appendFormat:@"%@%@", [nStr substringWithRange:NSMakeRange(7, 4)], spaceStr];
62 }
63
64 if (nStr.length < 4)
65 {
66 [mStrTemp appendString:[nStr substringWithRange:NSMakeRange(nStr.length-nStr.length % 3,
67 nStr.length % 3)]];
68 }else if(nStr.length > 3)
69 {
70 NSString *str = [nStr substringFromIndex:3];
71 [mStrTemp appendString:[str substringWithRange:NSMakeRange(str.length-str.length % 4,
72 str.length % 4)]];
73 if (nStr.length == 11)
74 {
75 [mStrTemp deleteCharactersInRange:NSMakeRange(13, 1)];
76 }
77 }
78 NSLog(@"=======mstrTemp=%@",mStrTemp);
79
80 textField.text = mStrTemp;
81 // textField设置selectedTextRange
82 NSUInteger curTargetCursorPosition = targetCursorPosition;// 当前光标的偏移位置
83 if (editFlag == 0)
84 {
85 //删除
86 if (targetCursorPosition == 9 || targetCursorPosition == 4)
87 {
88 curTargetCursorPosition = targetCursorPosition - 1;
89 }
90 }
91 else {
92 //添加
93 if (nStr.length == 8 || nStr.length == 3)
94 {
95 curTargetCursorPosition = targetCursorPosition + 1;
96 }
97 }
98
99 UITextPosition *targetPosition = [textField positionFromPosition:[textField beginningOfDocument]
100 offset:curTargetCursorPosition];
101 [textField setSelectedTextRange:[textField textRangeFromPosition:targetPosition
102 toPosition :targetPosition]];
103 }
104
105 - (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string
106 {
107 previousTextFieldContent = textField.text;
108 previousSelection = textField.selectedTextRange;
109
110 return YES;
111 }
