递归获取字符串内的所有图片src地址

// 递归调用获取字符串内所有的src地址

-(NSMutableArray *)getImageSrcUrlWithString:(NSString *)str withArray:(NSMutableArray *)myArray

{

NSMutableString *sourceStr = [NSMutableString stringWithString:str];

NSString *srcStartPatten= @"src=\"";

NSString *srcEndPatten = @"\"";

NSRange startRange = [sourceStr rangeOfString:srcStartPatten];

if(startRange.location == NSNotFound)

{

return myArray;

}

int startIndex = (int)startRange.location;

if(startIndex >= 0)

{

sourceStr = [sourceStr substringFromIndex:startIndex+5];

NSRange endRange = [sourceStr rangeOfString:srcEndPatten];

int endIndex = (int)endRange.location;

if(endIndex >= 0)

{

NSString *src = [sourceStr substringToIndex:endIndex];

[myArray addObject:src];

NSString *leftStr = [sourceStr substringFromIndex:endIndex+3];

[self getImageSrcUrlWithString:leftStr withArray:myArray];

}

}

return myArray;

}