一下內容由angellixf整理,這裏製做記錄:php
Object-c代碼 api
- /*******************************************************************************************
- NSString
- *******************************************************************************************/
- //1、NSString
- /*----------------建立字符串的方法----------------*/
-
- //1、建立常量字符串。
- NSString *astring = @"This is a String!";
-
-
- //2、建立空字符串,給予賦值。
-
- NSString *astring = [[NSString alloc] init];
- astring = @"This is a String!";
- [astring release];
- NSLog(@"astring:%@",astring);
-
-
-
- //3、在以上方法中,提高速度:initWithString方法
-
- NSString *astring = [[NSString alloc] initWithString:@"This is a String!"];
- NSLog(@"astring:%@",astring);
- [astring release];
-
-
-
- //4、用標準c建立字符串:initWithCString方法
-
- char *Cstring = "This is a String!";
- NSString *astring = [[NSString alloc] initWithCString:Cstring];
- NSLog(@"astring:%@",astring);
- [astring release];
-
-
-
- //5、建立格式化字符串:佔位符(由一個%加一個字符組成)
-
- int i = 1;
- int j = 2;
- NSString *astring = [[NSString alloc] initWithString:[NSString stringWithFormat:@"%d.This is %i string!",i,j]];
- NSLog(@"astring:%@",astring);
- [astring release];
-
-
-
- //6、建立臨時字符串
-
- NSString *astring;
- astring = [NSString stringWithCString:"This is a temporary string"];
- NSLog(@"astring:%@",astring);
-
-
-
-
- /*----------------從文件讀取字符串:initWithContentsOfFile方法----------------*/
-
- NSString *path = @"astring.text";
- NSString *astring = [[NSString alloc] initWithContentsOfFile:path];
- NSLog(@"astring:%@",astring);
- [astring release];
-
-
- /*----------------寫字符串到文件:writeToFile方法----------------*/
-
-
- NSString *astring = [[NSString alloc] initWithString:@"This is a String!"];
- NSLog(@"astring:%@",astring);
- NSString *path = @"astring.text";
- [astring writeToFile: path atomically: YES];
- [astring release];
-
-
-
-
- /*----------------比較兩個字符串----------------*/
-
- //用C比較:strcmp函數
-
- char string1[] = "string!";
- char string2[] = "string!";
- if(strcmp(string1, string2) = = 0)
- {
- NSLog(@"1");
- }
-
-
-
- //isEqualToString方法
- NSString *astring01 = @"This is a String!";
- NSString *astring02 = @"This is a String!";
- BOOL result = [astring01 isEqualToString:astring02];
- NSLog(@"result:%d",result);
-
-
-
-
- //compare方法(comparer返回的三種值)
- NSString *astring01 = @"This is a String!";
- NSString *astring02 = @"This is a String!";
- BOOL result = [astring01 compare:astring02] = = NSOrderedSame;
- NSLog(@"result:%d",result);
- //NSOrderedSame判斷二者內容是否相同
-
-
-
-
- NSString *astring01 = @"This is a String!";
- NSString *astring02 = @"this is a String!";
- BOOL result = [astring01 compare:astring02] = = NSOrderedAscending;
- NSLog(@"result:%d",result);
- //NSOrderedAscending判斷兩對象值的大小(按字母順序進行比較,astring02大於astring01爲真)
-
-
-
- NSString *astring01 = @"this is a String!";
- NSString *astring02 = @"This is a String!";
- BOOL result = [astring01 compare:astring02] = = NSOrderedDescending;
- NSLog(@"result:%d",result);
- //NSOrderedDescending判斷兩對象值的大小(按字母順序進行比較,astring02小於astring01爲真)
-
-
-
- //不考慮大小寫比較字符串1
- NSString *astring01 = @"this is a String!";
- NSString *astring02 = @"This is a String!";
- BOOL result = [astring01 caseInsensitiveCompare:astring02] = = NSOrderedSame;
- NSLog(@"result:%d",result);
- //NSOrderedDescending判斷兩對象值的大小(按字母順序進行比較,astring02小於astring01爲真)
-
-
-
- //不考慮大小寫比較字符串2
- NSString *astring01 = @"this is a String!";
- NSString *astring02 = @"This is a String!";
- BOOL result = [astring01 compare:astring02
- options:NSCaseInsensitiveSearch | NSNumericSearch] = = NSOrderedSame;
- NSLog(@"result:%d",result);
-
- //NSCaseInsensitiveSearch:不區分大小寫比較 NSLiteralSearch:進行徹底比較,區分大小寫 NSNumericSearch:比較字符串的字符個數,而不是字符值。
-
-
- /*----------------改變字符串的大小寫----------------*/
-
- NSString *string1 = @"A String";
- NSString *string2 = @"String";
- NSLog(@"string1:%@",[string1 uppercaseString]);//大寫
- NSLog(@"string2:%@",[string2 lowercaseString]);//小寫
- NSLog(@"string2:%@",[string2 capitalizedString]);//首字母大小
-
-
- /*----------------在串中搜索子串----------------*/
-
- NSString *string1 = @"This is a string";
- NSString *string2 = @"string";
- NSRange range = [string1 rangeOfString:string2];
- int location = range.location;
- int leight = range.length;
- NSString *astring = [[NSString alloc] initWithString:[NSString stringWithFormat:@"Location:%i,Leight:%i",location,leight]];
- NSLog(@"astring:%@",astring);
- [astring release];
-
-
- /*----------------抽取子串 ----------------*/
-
- //-substringToIndex: 從字符串的開頭一直截取到指定的位置,但不包括該位置的字符
- NSString *string1 = @"This is a string";
- NSString *string2 = [string1 substringToIndex:3];
- NSLog(@"string2:%@",string2);
-
-
-
-
- //-substringFromIndex: 以指定位置開始(包括指定位置的字符),幷包括以後的所有字符
- NSString *string1 = @"This is a string";
- NSString *string2 = [string1 substringFromIndex:3];
- NSLog(@"string2:%@",string2);
-
-
-
-
- //-substringWithRange: //按照所給出的位置,長度,任意地從字符串中截取子串
- NSString *string1 = @"This is a string";
- NSString *string2 = [string1 substringWithRange:NSMakeRange(0, 4)];
- NSLog(@"string2:%@",string2);
-
-
- //擴展路徑
-
- NSString *Path = @"~/NSData.txt";
- NSString *absolutePath = [Path stringByExpandingTildeInPath];
- NSLog(@"absolutePath:%@",absolutePath);
- NSLog(@"Path:%@",[absolutePath stringByAbbreviatingWithTildeInPath]);
-
-
-
- //文件擴展名
- NSString *Path = @"~/NSData.txt";
- NSLog(@"Extension:%@",[Path pathExtension]);
-
-
-
-
- /*******************************************************************************************
- NSMutableString
- *******************************************************************************************/
-
- /*---------------給字符串分配容量----------------*/
- //stringWithCapacity:
- NSMutableString *String;
- String = [NSMutableString stringWithCapacity:40];
-
-
- /*---------------在已有字符串後面添加字符----------------*/
-
- //appendString: and appendFormat:
-
- NSMutableString *String1 = [[NSMutableString alloc] initWithString:@"This is a NSMutableString"];
- //[String1 appendString:@", I will be adding some character"];
- [String1 appendFormat:[NSString stringWithFormat:@", I will be adding some character"]];
- NSLog(@"String1:%@",String1);
- */
-
-
- /*--------在已有字符串中按照所給出範圍和長度刪除字符------*/
- /*
- //deleteCharactersInRange:
- NSMutableString *String1 = [[NSMutableString alloc] initWithString:@"This is a NSMutableString"];
- [String1 deleteCharactersInRange:NSMakeRange(0, 5)];
- NSLog(@"String1:%@",String1);
-
-
-
- /*--------在已有字符串後面在所指定的位置中插入給出的字符串------*/
-
- //-insertString: atIndex:
- NSMutableString *String1 = [[NSMutableString alloc] initWithString:@"This is a NSMutableString"];
- [String1 insertString:@"Hi! " atIndex:0];
- NSLog(@"String1:%@",String1);
-
-
-
- /*--------將已有的空符串換成其它的字符串------*/
-
- //-setString:
- NSMutableString *String1 = [[NSMutableString alloc] initWithString:@"This is a NSMutableString"];
- [String1 setString:@"Hello Word!"];
- NSLog(@"String1:%@",String1);
-
-
-
- /*--------按照所給出的範圍,和字符串替換的原有的字符------*/
-
- //-setString:
- NSMutableString *String1 = [[NSMutableString alloc] initWithString:@"This is a NSMutableString"];
- [String1 replaceCharactersInRange:NSMakeRange(0, 4) withString:@"That"];
- NSLog(@"String1:%@",String1);
-
-
-
- /*-------------判斷字符串內是否還包含別的字符串(前綴,後綴)-------------*/
- //01:檢查字符串是否以另外一個字符串開頭- (BOOL) hasPrefix: (NSString *) aString;
- NSString *String1 = @"NSStringInformation.txt";
- [String1 hasPrefix:@"NSString"] = = 1 ? NSLog(@"YES") : NSLog(@"NO");
- [String1 hasSuffix:@".txt"] = = 1 ? NSLog(@"YES") : NSLog(@"NO");
-
- //02:查找字符串某處是否包含其它字符串 - (NSRange) rangeOfString: (NSString *) aString,這一點前面在串中搜索子串用到過;
-
-
-
- /*******************************************************************************************
- NSArray
- *******************************************************************************************/
-
- /*---------------------------建立數組------------------------------*/
- //NSArray *array = [[NSArray alloc] initWithObjects:
- @"One",@"Two",@"Three",@"Four",nil];
-
- self.dataArray = array;
- [array release];
-
- //- (unsigned) Count;數組所包含對象個數;
- NSLog(@"self.dataArray cound:%d",[self.dataArray count]);
-
- //- (id) objectAtIndex: (unsigned int) index;獲取指定索引處的對象;
- NSLog(@"self.dataArray cound 2:%@",[self.dataArray objectAtIndex:2]);
-
-
- /*--------------------------從一個數組拷貝數據到另外一數組(可變數級)----------------------------*/
-
- //arrayWithArray:
- //NSArray *array1 = [[NSArray alloc] init];
- NSMutableArray *MutableArray = [[NSMutableArray alloc] init];
- NSArray *array = [NSArray arrayWithObjects:
- @"a",@"b",@"c",nil];
- NSLog(@"array:%@",array);
- MutableArray = [NSMutableArray arrayWithArray:array];
- NSLog(@"MutableArray:%@",MutableArray);
-
- array1 = [NSArray arrayWithArray:array];
- NSLog(@"array1:%@",array1);
-
-
- //Copy
-
- //id obj;
- NSMutableArray *newArray = [[NSMutableArray alloc] init];
- NSArray *oldArray = [NSArray arrayWithObjects:
- @"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",nil];
-
- NSLog(@"oldArray:%@",oldArray);
- for(int i = 0; i < [oldArray count]; i++)
- {
- obj = [[oldArray objectAtIndex:i] copy];
- [newArray addObject: obj];
- }
- //
- NSLog(@"newArray:%@", newArray);
- [newArray release];
-
-
- //快速枚舉
-
- //NSMutableArray *newArray = [[NSMutableArray alloc] init];
- NSArray *oldArray = [NSArray arrayWithObjects:
- @"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",nil];
- NSLog(@"oldArray:%@",oldArray);
-
- for(id obj in oldArray)
- {
- [newArray addObject: obj];
- }
- //
- NSLog(@"newArray:%@", newArray);
- [newArray release];
-
-
- //Deep copy
-
- //NSMutableArray *newArray = [[NSMutableArray alloc] init];
- NSArray *oldArray = [NSArray arrayWithObjects:
- @"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",nil];
- NSLog(@"oldArray:%@",oldArray);
- newArray = (NSMutableArray*)CFPropertyListCreateDeepCopy(kCFAllocatorDefault, (CFPropertyListRef)oldArray, kCFPropertyListMutableContainers);
- NSLog(@"newArray:%@", newArray);
- [newArray release];
-
-
- //Copy and sort
-
- //NSMutableArray *newArray = [[NSMutableArray alloc] init];
- NSArray *oldArray = [NSArray arrayWithObjects:
- @"b",@"a",@"e",@"d",@"c",@"f",@"h",@"g",nil];
- NSLog(@"oldArray:%@",oldArray);
- NSEnumerator *enumerator;
- enumerator = [oldArray objectEnumerator];
- id obj;
- while(obj = [enumerator nextObject])
- {
- [newArray addObject: obj];
- }
- [newArray sortUsingSelector:@selector(compare:)];
- NSLog(@"newArray:%@", newArray);
- [newArray release];
-
-
-
- /*---------------------------切分數組------------------------------*/
-
- //從字符串分割到數組- componentsSeparatedByString:
- NSString *string = [[NSString alloc] initWithString:@"One,Two,Three,Four"];
- NSLog(@"string:%@",string);
- NSArray *array = [string componentsSeparatedByString:@","];
- NSLog(@"array:%@",array);
- [string release];
-
-
- //從數組合並元素到字符串- componentsJoinedByString:
- NSArray *array = [[NSArray alloc] initWithObjects:@"One",@"Two",@"Three",@"Four",nil];
- NSString *string = [array componentsJoinedByString:@","];
- NSLog(@"string:%@",string);
-
-
-
- /*******************************************************************************************
- NSMutableArray
- *******************************************************************************************/
- /*---------------給數組分配容量----------------*/
- //NSArray *array;
- array = [NSMutableArray arrayWithCapacity:20];
-
-
-
- /*--------------在數組末尾添加對象----------------*/
- //- (void) addObject: (id) anObject;
- //NSMutableArray *array = [NSMutableArray arrayWithObjects:
- @"One",@"Two",@"Three",nil];
- [array addObject:@"Four"];
- NSLog(@"array:%@",array);
-
-
-
- /*--------------刪除數組中指定索引處對象----------------*/
- //-(void) removeObjectAtIndex: (unsigned) index;
- //NSMutableArray *array = [NSMutableArray arrayWithObjects:
- @"One",@"Two",@"Three",nil];
- [array removeObjectAtIndex:1];
- NSLog(@"array:%@",array);
-
-
-
- /*-------------數組枚舉---------------*/
- //- (NSEnumerator *)objectEnumerator;從前向後
- //NSMutableArray *array = [NSMutableArray arrayWithObjects:
- @"One",@"Two",@"Three",nil];
- NSEnumerator *enumerator;
- enumerator = [array objectEnumerator];
-
- id thingie;
- while (thingie = [enumerator nextObject]) {
- NSLog(@"thingie:%@",thingie);
- }
-
-
- //- (NSEnumerator *)reverseObjectEnumerator;從後向前
- //NSMutableArray *array = [NSMutableArray arrayWithObjects:
- @"One",@"Two",@"Three",nil];
- NSEnumerator *enumerator;
- enumerator = [array reverseObjectEnumerator];
-
- id object;
- while (object = [enumerator nextObject]) {
- NSLog(@"object:%@",object);
- }
-
-
- //快速枚舉
- //NSMutableArray *array = [NSMutableArray arrayWithObjects:
- @"One",@"Two",@"Three",nil];
- for(NSString *string in array)
- {
- NSLog(@"string:%@",string);
- }
-
-
-
- /*******************************************************************************************
- NSDictionary
- *******************************************************************************************/
-
- /*------------------------------------建立字典------------------------------------*/
- //- (id) initWithObjectsAndKeys;
-
- //NSDictionary *dictionary = [[NSDictionary alloc] initWithObjectsAndKeys:@"One",@"1",@"Two",@"2",@"Three",@"3",nil];
- NSString *string = [dictionary objectForKey:@"One"];
- NSLog(@"string:%@",string);
- NSLog(@"dictionary:%@",dictionary);
- [dictionary release];
-
-
- /*******************************************************************************************
- NSMutableDictionary
- *******************************************************************************************/
-
- /*------------------------------------建立可變字典------------------------------------*/
- //建立
- NSMutableDictionary *dictionary = [NSMutableDictionary dictionary];
-
- //添加字典
- [dictionary setObject:@"One" forKey:@"1"];
- [dictionary setObject:@"Two" forKey:@"2"];
- [dictionary setObject:@"Three" forKey:@"3"];
- [dictionary setObject:@"Four" forKey:@"4"];
- NSLog(@"dictionary:%@",dictionary);
-
- //刪除指定的字典
- [dictionary removeObjectForKey:@"3"];
- NSLog(@"dictionary:%@",dictionary);
-
-
- /*******************************************************************************************
- NSValue(對任何對象進行包裝)
- *******************************************************************************************/
-
- /*--------------------------------將NSRect放入NSArray中------------------------------------*/
- //將NSRect放入NSArray中
- NSMutableArray *array = [[NSMutableArray alloc] init];
- NSValue *value;
- CGRect rect = CGRectMake(0, 0, 320, 480);
- value = [NSValue valueWithBytes:&rect objCType:@encode(CGRect)];
- [array addObject:value];
- NSLog(@"array:%@",array);
-
- //從Array中提取
- value = [array objectAtIndex:0];
- [value getValue:&rect];
- NSLog(@"value:%@",value);
-
-
- /*******************************************************************************************
- 從目錄搜索擴展名爲jpg的文件
- *******************************************************************************************/
-
- //NSFileManager *fileManager = [NSFileManager defaultManager];
- NSString *home;
- home = @"../Users/";
-
- NSDirectoryEnumerator *direnum;
- direnum = [fileManager enumeratorAtPath: home];
-
- NSMutableArray *files = [[NSMutableArray alloc] init];
-
- //枚舉
- NSString *filename;
- while (filename = [direnum nextObject]) {
- if([[filename pathExtension] hasSuffix:@"jpg"]){
- [files addObject:filename];
- }
- }
-
- //快速枚舉
- //for(NSString *filename in direnum)
- //{
- // if([[filename pathExtension] isEqualToString:@"jpg"]){
- // [files addObject:filename];
- // }
- //}
- NSLog(@"files:%@",files);
-
- //枚舉
- NSEnumerator *filenum;
- filenum = [files objectEnumerator];
- while (filename = [filenum nextObject]) {
- NSLog(@"filename:%@",filename);
- }
-
- //快速枚舉
- //for(id object in files)
- //{
- // NSLog(@"object:%@",object);
- //}