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經常當我拉了我的UITableView刷新從我的服務器繪製的內容將與以下消息崩潰：頻繁outofbounds用的cellForRowAtIndexPath指數 - 的OBJç
Terminating app due to uncaught exception 'NSRangeException', reason:
'-[__NSCFArray objectAtIndex:]: index (4) beyond bounds (4)'
現在的問題是，我的數據在我的最後被設置爲每次都有相同數據的NSDictionary，所以我知道我的服務器沒有返回任何不合適的東西。
在這裏如何一切工作，我有一個整數稱爲i。 i將細胞再增殖的始終= 0基於：
-(void) tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
if([indexPath row] == ((NSIndexPath*)[[tableView indexPathsForVisibleRows] lastObject]).row){
//end of loading
//for example [activityIndicator stopAnimating];
i = 0;//<!-- reset the i so that when page reloads cells it does not fail
}
}
我也在上2額外的插槽我NSDictionary因爲插槽0和1是關鍵部分。
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [[self.dataGrabed_dictionary objectForKey:@"scheduled_times"] count] + 2;//<!-- by default we want to make sure 2 is being added no matter what. 1 = clients address and name, 2 = upcoming lawn care
}
所以回到i第2調用cellForRowAtIndexPath我用if statements分配所收集的數據進行第2個細胞：有與填充第2個小區的用戶信息相關聯。比我增加i我填充其他單元格的數據(if any)
這裏正好是怎麼回事內cellForRowAtIndexPath：
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(@"%d",i);
self.tableView.separatorColor = [UIColor clearColor];// Get rid of speration border color
static NSString *CellIdentifier = @"homecell";
HomePageTimelineCell *cell = (HomePageTimelineCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
cell = [[HomePageTimelineCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
[cell setSelectionStyle:UITableViewCellSelectionStyleNone];
[cell initTimelineCell];
cell.backgroundColor = [UIColor clearColor];// Set the background color to the cell
// lets check if there is any data
if([self.dataGrabed_dictionary objectForKey:@"scheduled_times"] == nil && [self.dataGrabed_dictionary objectForKey:@"upcoming"] == nil)
{
//<!-- if the indexRow row = 0, this is the clients username and address
if(indexPath.row == 0)
{
NSArray *get = [[SSKeychain allAccounts] init];
NSString *username = [get[0] objectForKey:@"acct"];
//<!-- Get keyname of the address and than point to that keyname and get data
//NSString *KeyName = [[self.dataGrabed_dictionary allKeys] objectAtIndex: indexPath.row];
//<!-- create uppercase strings
NSString *upperCaseAddress = [[self.dataGrabed_dictionary objectForKey:@"client_address"] uppercaseString];
NSString *upperCaseUsername = [username uppercaseString];
//<!-- Set associated strings
cell.addressLabel.text = upperCaseAddress;
cell.usernameLabel.text = upperCaseUsername;
}
else if(indexPath.row == 1)
{
cell.contentView.backgroundColor = [self colorWithHexString:@"666666"];
cell.button.backgroundColor = [self colorWithHexString:@"7ddcb8"];
cell.button.tag = indexPath.row;
[cell.button setTitle:@"schedule" forState:UIControlStateNormal];
[cell.button setTitleColor:[self colorWithHexString:@"666666"] forState:UIControlStateNormal];
/* Setup button action */
//[cell.button addTarget:self action:@selector(onCustomAccessoryTapped:) forControlEvents:UIControlEventTouchUpInside];
cell.dateLabel.tag = indexPath.row + 100; //<!-- 100 = date
cell.dateLabel.text = @"Nothing Scheduled";//<!-- Set the Date
[cell.contentView addSubview:cell.button];
[cell.contentView addSubview:cell.nextLabel];
[cell.contentView addSubview:cell.dayLabel];
[cell.contentView addSubview:cell.dateLabel];
}
}
else
{
//<!-- Set background color
if (indexPath.row % 2) {
cell.contentView.backgroundColor = [self colorWithHexString:@"77d1af"];
//<!-- Set background and text color for even cells
[cell.button setTitleColor:[self colorWithHexString:@"7ddcb8"] forState:UIControlStateNormal];
cell.button.backgroundColor = [self colorWithHexString:@"666666"];
} else {
cell.contentView.backgroundColor = [self colorWithHexString:@"7ddcb8"];
//<!-- Set background and text color for even cells
[cell.button setTitleColor:[self colorWithHexString:@"7ddcb8"] forState:UIControlStateNormal];
cell.button.backgroundColor = [self colorWithHexString:@"ffffff"];
}
//<!-- if the indexRow row = 0, this is the clients username and address
if(indexPath.row == 0)
{
NSArray *get = [[SSKeychain allAccounts] init];
NSString *username = [get[0] objectForKey:@"acct"];
//<!-- Get keyname of the address and than point to that keyname and get data
//NSString *KeyName = [[self.dataGrabed_dictionary allKeys] objectAtIndex: indexPath.row + 4];
//<!-- create uppercase strings
NSString *upperCaseAddress = [[self.dataGrabed_dictionary objectForKey:@"client_address"] uppercaseString];
NSString *upperCaseUsername = [username uppercaseString];
//<!-- Set associated strings
cell.addressLabel.text = upperCaseAddress;
cell.usernameLabel.text = upperCaseUsername;
}
//<!-- if the indexRow row = 1, this is the 2 cell and will show the most upcoming lawn schedule
else if(indexPath.row == 1)
{
//<!-- Lets check if user even has an upcoming mowing date -->
if([self.dataGrabed_dictionary objectForKey:@"upcoming"] == nil)
{
cell.contentView.backgroundColor = [self colorWithHexString:@"666666"];
cell.button.backgroundColor = [self colorWithHexString:@"7ddcb8"];
cell.button.tag = indexPath.row;
[cell.button setTitle:@"schedule" forState:UIControlStateNormal];
[cell.button setTitleColor:[self colorWithHexString:@"666666"] forState:UIControlStateNormal];
/* Setup button action */
//[cell.button addTarget:self action:@selector(onCustomAccessoryTapped:) forControlEvents:UIControlEventTouchUpInside];
cell.dateLabel.tag = indexPath.row + 100; //<!-- 100 = date
cell.dateLabel.text = @"Nothing Scheduled";//<!-- Set the Date
[cell.contentView addSubview:cell.button];
[cell.contentView addSubview:cell.nextLabel];
[cell.contentView addSubview:cell.dayLabel];
[cell.contentView addSubview:cell.dateLabel];
}
else
{
//<!-- create uppercase strings
NSString *upperCaseDay = [[self.dataGrabed_dictionary objectForKey:@"upcoming_day"] uppercaseString];
//<!-- create uppercase strings
NSString *upperCaseDate = [[self.dataGrabed_dictionary objectForKey:@"upcoming_date"] uppercaseString];
cell.contentView.backgroundColor = [self colorWithHexString:@"666666"];
cell.button.backgroundColor = [self colorWithHexString:@"7ddcb8"];
cell.button.tag = indexPath.row;
[cell.button setTitle:@"change" forState:UIControlStateNormal];
[cell.button setTitleColor:[self colorWithHexString:@"666666"] forState:UIControlStateNormal];
/* Setup button action */
//[cell.button addTarget:self action:@selector(onCustomAccessoryTapped:) forControlEvents:UIControlEventTouchUpInside];
cell.dayLabel.text = upperCaseDay;//<!-- Set the day
cell.dateLabel.tag = indexPath.row + 100; //<!-- 100 = date
cell.dateLabel.text = upperCaseDate;//<!-- Set the Date
[cell.contentView addSubview:cell.button];
[cell.contentView addSubview:cell.nextLabel];
[cell.contentView addSubview:cell.dayLabel];
[cell.contentView addSubview:cell.dateLabel];
}
}
else //<!-- Normal cell population
{
//<!-- Re edit labels positioning
cell.dayLabel.frame = CGRectMake(9, 10, 200, 45);
cell.dateLabel.frame = CGRectMake(9, 35, 300, 45);
//<!-- Setup data called from server
NSDictionary *innerClientData =[self.dataGrabed_dictionary objectForKey:@"scheduled_times"][i];
NSString *innerClientDay =[self.dataGrabed_dictionary objectForKey:@"scheduled_times_day"][i];
NSString *innerClientDate =[self.dataGrabed_dictionary objectForKey:@"scheduled_times_date"][i];
//<!-- create uppercase strings
NSString *upperCaseDay = [innerClientDay uppercaseString];
//<!-- create uppercase strings
NSString *upperCaseDate = [ innerClientDate uppercaseString];
//<!-- Check to see if client paid
if([[innerClientData objectForKey:@"client_paid"] isEqual: @"0"])
{
NSString *amount = [innerClientData objectForKey:@"client_price"];
NSString *pay = @"pay $";
NSString * combined = [pay stringByAppendingString:amount];
[cell.button setTitle:combined forState:UIControlStateNormal];
}
else if([[innerClientData objectForKey:@"client_paid"] isEqual: @"1"])
{
[cell.button setTitle:@"PAID" forState:UIControlStateNormal];
}
//[cell.button setTitleColor:[self colorWithHexString:@"666666"] forState:UIControlStateNormal];
cell.button.tag = indexPath.row;
/* Setup button action */
//[cell.button addTarget:self action:@selector(onCustomAccessoryTapped:) forControlEvents:UIControlEventTouchUpInside];
cell.dayLabel.text = upperCaseDay;//<!-- Set the day
cell.dateLabel.tag = indexPath.row + 100; //<!-- 100 = date
cell.dateLabel.text = upperCaseDate;//<!-- Set the Date
[cell.contentView addSubview:cell.button];
[cell.contentView addSubview:cell.dayLabel];
[cell.contentView addSubview:cell.dateLabel];
i++;
}
}
return cell;
}
我的NSDictionary的分配是這樣的：
NSString *responseString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(@"responseString: %@",responseString);
// GRAB STATUS OBJECT
NSDictionary* json = [NSJSONSerialization
JSONObjectWithData:returnData //1
options:kNilOptions
error:&error];
self.dataGrabed_dictionary = [json objectForKey:@"retrieved_data"];
建議至於爲什麼它與out of bounds崩潰？
它在哪裏崩潰？你沒有指出哪一行代碼崩潰。 – rmaddy
爲什麼'cellForRowAtIndexPath：'如此複雜，但'numberOfRowsInSection：'是如此簡單？他們似乎不同意。 – rmaddy
是'我'和實例變量？擺脫它。它應該是'indexPath.row - 2'。 – rmaddy