有关截取歌词中字符串的作业（用工程实现）

运行部分代码：

import “ViewController.h”

import “SongObj.h”

@interface ViewController (){
NSArray *dataSource;
}
@property (weak, nonatomic) IBOutlet UITableView *table;

@end

@implementation ViewController

• (void)viewDidLoad {
  [super viewDidLoad];

  self.table.dataSource = self;
  self.table.delegate = self;
  NSString *urlString = @”http://doido.sinaapp.com/qmusic/api.php?song=九月&singer=许巍”;
  urlString = [urlString stringByAddingPercentEscapesUsingEncoding:4];
  NSURL *url = [NSURL URLWithString:urlString];
  NSData *data = [NSData dataWithContentsOfURL:url];
  NSString *string = [[NSString alloc] initWithData:data encoding:4];
  SongObj *songObj = [SongObj songWithContentString:string];
  dataSource = songObj.lrc;

}

-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}

-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return dataSource.count;
}
-(UITableViewCell )tableView:(UITableView )tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *identifier = @”cell”;
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];
if (!cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:identifier];
}
NSDictionary *dic = dataSource[indexPath.row];
for (NSString *key in dic) {
cell.textLabel.text = dic[key];
cell.detailTextLabel.text = key;
}

return cell;

}

• (void)didReceiveMemoryWarning {
  [super didReceiveMemoryWarning];
  // Dispose of any resources that can be recreated.
  }

@end
声明部分代码：

import

import “SongObj.h”

@implementation SongObj

+(SongObj )songWithContentString:(NSString )string{
SongObj *songObj = [SongObj new];
// [songObj handleWithStringNew:string];
[songObj handleWithString:string WithObj:songObj];
return songObj;
}

-(void)handleWithString:(NSString )string WithObj:(SongObj )songObj{

NSMutableString *mString = [NSMutableString stringWithString:string];NSMutableArray *array = [NSMutableArray array];NSRange range = [mString rangeOfString:@","];while (range.location != NSNotFound) {    NSString *subString = [mString substringWithRange:NSMakeRange(0, range.location)];    NSRange subRange = [subString rangeOfString:@":"];    NSString * targetString = [subString substringWithRange:NSMakeRange(subRange.location+1, subString.length-subRange.location-1)];    [array addObject:targetString];    [mString deleteCharactersInRange:NSMakeRange(0, range.location+1)];    range = [mString rangeOfString:@","];}songObj.ret = [array objectAtIndex:0];songObj.song = [array objectAtIndex:1];songObj.singer = [array objectAtIndex:2];songObj.link = [array objectAtIndex:3];songObj.lrc =  [self handleWithString:mString];

}

-(NSArray )handleWithString:(NSMutableString )mString{
NSMutableArray *mArray = [NSMutableArray array];
NSRange range = [mString rangeOfString:@”]”];
NSString *subString = [mString substringWithRange:NSMakeRange(0, range.location)];
NSRange subRange = [subString rangeOfString:@”ti”];
if (subRange.location != NSNotFound) {
NSMutableDictionary *mDic = [NSMutableDictionary dictionary];
[mDic setValue:[subString substringWithRange:NSMakeRange(subRange.location+subRange.length+1, subString.length-(subRange.location+subRange.length+1))] forKey:@”ti”];
[mArray addObject:mDic];
}

[mString deleteCharactersInRange:NSMakeRange(0, range.location+1)];//添加 ar range = [mString rangeOfString:@"]"];subString = [mString substringWithRange:NSMakeRange(0, range.location)];subRange = [subString rangeOfString:@"ar"];if (subRange.location != NSNotFound) {    NSMutableDictionary *mDic = [NSMutableDictionary dictionary];    [mDic setValue:[subString substringWithRange:NSMakeRange(subRange.location+subRange.length+1, subString.length-(subRange.location+subRange.length+1))] forKey:@"ar"];    [mArray addObject:mDic];}[mString deleteCharactersInRange:NSMakeRange(0, range.location+1)];//添加 alrange = [mString rangeOfString:@"]"];subString = [mString substringWithRange:NSMakeRange(0, range.location)];subRange = [subString rangeOfString:@"al"];if (subRange.location != NSNotFound) {    NSMutableDictionary *mDic = [NSMutableDictionary dictionary];    [mDic setValue:[subString substringWithRange:NSMakeRange(subRange.location+subRange.length+1, subString.length-(subRange.location+subRange.length+1))] forKey:@"al"];    [mArray addObject:mDic];}[mString deleteCharactersInRange:NSMakeRange(0, range.location+1)];[mString deleteCharactersInRange:[mString rangeOfString:@"["]];range = [mString rangeOfString:@"["];while (range.location != NSNotFound) {    subString = [mString substringWithRange:NSMakeRange(0, range.location)];    subRange = [mString rangeOfString:@"]"];    NSString *key = [subString substringWithRange:NSMakeRange(0, subRange.location)];    NSString *value = [subString substringWithRange:NSMakeRange(subRange.location+1, subString.length-(subRange.location+1))];    NSMutableDictionary *dictionary = [NSMutableDictionary dictionary];    [dictionary setValue:value forKey:key];    [mArray addObject:dictionary];    [mString deleteCharactersInRange:NSMakeRange(0, range.location+1)];    range = [mString rangeOfString:@"["];}subRange = [mString rangeOfString:@"]"];NSString *key = [mString substringWithRange:NSMakeRange(0, subRange.location)];NSString *value = [mString substringWithRange:NSMakeRange(subRange.location+1, subString.length-(subRange.location+1))];NSMutableDictionary *dictionary = [NSMutableDictionary dictionary];[dictionary setValue:value forKey:key];[mArray addObject:dictionary];return mArray;

}
@end
主函数（main。m)部分代码：#import

import “AppDelegate.h”

int main(int argc, char * argv[]) {
@autoreleasepool {
return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
}
}