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我很新的Objective C和我一直有麻烦了一段时间，我一直在寻找答案，看教程，我一直没能找到解决方案对我的问题。也许它在我面前的权利，我没有看到它......我认为这与我的UISearch酒吧的NSRange有关。但我不是100％肯定的。NSRangeException错误... NSDictionary，NSArray，UISearchBar
我想通过具有我的国家字典的关键字的数组进行搜索，我已经设置了几个NSLogs，并且我看到这些关键字将进入我已经设置保存它们的数组中，然后我得到以下错误...
因此，据我了解，这是计数countryKeys有5，所以索引4应该存在，不应该？但它然后显示0 .. 3，所以我这就是为什么我认为我错误地使用NSRange。到目前为止，我已经看过一些UISearchBar和For循环教程，我很了解For循环和它们更好，我想我需要弄清楚NSRange。
让我知道如果你不明白我的思维过程或任何东西，我提到..
Filtered Countries (
ATE,
ARE,
USA,
JAP,
CAN
)
*** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayI objectAtIndex:]: index 4 beyond bounds [0 .. 3]'
-
#import "ViewController.h"
@interface ViewController()
@end
@implementation ViewController
@synthesize dictTableView, mySearchBar, countriesInRegion, filteredCountries, isFiltered, regionCodes, countryKey, countryKeys, countryInfo, sortedKeysArray, regionCode, dict1;
- (void)viewDidLoad
{
[super viewDidLoad];
dict1 = [[NSMutableDictionary alloc] init];
NSMutableDictionary *subDict = [[NSMutableDictionary alloc] initWithObjects:[NSArray arrayWithObjects:@"United States",@"US",@"USA", @"NAC", nil]
forKeys: [NSArray arrayWithObjects:@"countryName", @"countryAbbrev", @"countryID", @"countryRegion", nil]];
[dict1 setObject:subDict forKey:@"USA"];
subDict = [[NSMutableDictionary alloc] initWithObjects:[NSArray arrayWithObjects:@"Canada", @"CA", @"CAN", @"NAC", nil]
forKeys: [NSArray arrayWithObjects:@"countryName", @"countryAbbrev", @"countryID", @"countryRegion", nil]];
[dict1 setObject:subDict forKey:@"CAN"];
subDict = [[NSMutableDictionary alloc] initWithObjects:[NSArray arrayWithObjects:@"Japan", @"JP", @"JAP", @"EAS", nil]
forKeys: [NSArray arrayWithObjects:@"countryName", @"countryAbbrev", @"countryID", @"countryRegion", nil]];
[dict1 setObject:subDict forKey:@"JAP"];
subDict = [[NSMutableDictionary alloc] initWithObjects:[NSArray arrayWithObjects:@"United Arab Emirates", @"AE", @"ARE", @"MEA", nil]
forKeys: [NSArray arrayWithObjects:@"countryName", @"countryAbbrev", @"countryID", @"countryRegion", nil]];
[dict1 setObject:subDict forKey:@"ARE"];
subDict = [[NSMutableDictionary alloc] initWithObjects:[NSArray arrayWithObjects:@"Antigua and Barbuda", @"AG", @"ATE", @"LCN", nil]
forKeys: [NSArray arrayWithObjects:@"countryName", @"countryAbbrev", @"countryID", @"countryRegion", nil]];
[dict1 setObject:subDict forKey:@"ATE"];
regionCodes = [[NSMutableDictionary alloc] init];
countryKeys = [dict1 allKeys];
NSLog(@"countryKeys %@", countryKeys);
sortedKeysArray = [countryKeys sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)];
for (int i = 0; i < [sortedKeysArray count]; i++) {
countryKey = [sortedKeysArray objectAtIndex:i];
countryInfo = [dict1 objectForKey:countryKey]; // NSLog(@"returning countryKey to countryInfo %@", countryInfo);
regionCode = [countryInfo objectForKey:@"countryRegion"]; // NSLog(@" adding countryRegion Key to regionCode %@", regionCode);
// NSLog(@"the contents of countryInfo is %@", countryInfo);
if (![regionCodes objectForKey:regionCode]) {
countriesInRegion = [[NSMutableArray alloc] init];
[regionCodes setObject:countriesInRegion forKey:regionCode];
[countriesInRegion addObject:countryInfo]; // NSLog(@"if adding countryInfo to initialCountries %@", countryInfo);
}
else{
countriesInRegion = [regionCodes objectForKey:regionCode];
[countriesInRegion addObject:countryInfo]; // NSLog(@"else adding countryInfo to initialCountries %@", countryInfo);
}
}
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
if (isFiltered == NO)
{
return countryInfo.count;
}
else
{
return filteredCountries.count;
}
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
NSArray *sortKey = [regionCodes allKeys];
sortedKeysArray = [sortKey sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)];
return [sortedKeysArray objectAtIndex:section];
}
- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section;
{
NSString *regionKey = [[regionCodes allKeys] objectAtIndex:section];
countriesInRegion = [regionCodes objectForKey:regionKey];
if (isFiltered == NO)
{
return countriesInRegion.count;
}
else
{
return filteredCountries.count;
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;
{
UITableViewCell *cell = nil;
cell = [tableView dequeueReusableCellWithIdentifier:@"Cell"];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:(UITableViewCellStyleDefault) reuseIdentifier:@"Cell"];
UILabel *countryNameLabel = [[UILabel alloc] initWithFrame:(CGRectMake(10, 0, 220, 44))];
[countryNameLabel setBackgroundColor:[UIColor clearColor]];
UILabel *countryAbbrevLabel = [[UILabel alloc] initWithFrame:(CGRectMake(230, 0, 75, 44))];
[countryNameLabel setBackgroundColor:[UIColor clearColor]];
UILabel *countryIDLabel = [[UILabel alloc] initWithFrame:(CGRectMake(275, 0, 50, 44))];
[countryNameLabel setBackgroundColor:[UIColor clearColor]];
[cell.contentView addSubview:countryNameLabel];
[cell.contentView addSubview:countryAbbrevLabel];
[cell.contentView addSubview:countryIDLabel];
}
NSArray *regionKeys = [regionCodes allKeys];
NSString *regionKey = [regionKeys objectAtIndex:indexPath.section];
countriesInRegion = [regionCodes objectForKey:regionKey];
NSLog(@"Countries in Region %@", countriesInRegion);
countryInfo = [countriesInRegion objectAtIndex:indexPath.row];
NSArray *subviews = [cell.contentView subviews];
UILabel *nameLabel = [subviews objectAtIndex:0];
UILabel *abbrevLabel = [subviews objectAtIndex:1];
UILabel *idLabel = [subviews objectAtIndex:2];
// NSLog(@"6 - Countries in Region %@", countriesInRegion);
if (isFiltered == NO)
{
nameLabel.text = [countryInfo objectForKey:@"countryName"];
abbrevLabel.text = [countryInfo objectForKey:@"countryAbbrev"];
idLabel.text = [countryInfo objectForKey:@"countryID"];
// NSLog(@"5 - Our list of countries: %@", nameLabel.text);
// NSLog(@"Country Info %@",countryInfo);
}
else
{
nameLabel.text = [filteredCountries objectAtIndex:2];
abbrevLabel.text = [filteredCountries objectAtIndex:1];
idLabel.text = [filteredCountries objectAtIndex:0];
NSLog(@"4 - Here are your results: %@", filteredCountries);
}
return cell;
}
#pragma mark - UISearchBarDelegate Methods
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
if (searchText.length == 0) {
isFiltered = NO;
}
else
{
isFiltered = YES;
NSLog(@"You entered %@", searchText);
filteredCountries = [[NSMutableArray alloc] init];
countryKeys = [dict1 allKeys];
NSLog(@"countryKeys %@", countryKeys);
for (int i = 0; i < countryKeys.count; i++) {
countryKey = [countryKeys objectAtIndex:i];
NSLog(@"country key is %@", countryKey);
{
NSRange countryNameRange = [countryKey rangeOfString:searchText options:NSCaseInsensitiveSearch];
if (countryNameRange.location !=NSNotFound)
{
[filteredCountries addObject:countryKey];
NSLog(@"Filtered Countries %@", filteredCountries);
}
}
}
}
[dictTableView reloadData];
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
[mySearchBar resignFirstResponder];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
@end
是的，事实证明我有回国的数量是部分的数量。所以它正在崩溃，因为我有5个国家，只有四个地区。 – GunplaGamer 2013-03-26 22:19:53