UITextView自动完成文本不是我订购的 [英] UITextView Auto Complete text not i order
问题描述
我有一个 UITextView ，它连接到 UITableView 以进行自动完成。
I have a UITextView which is connected to UITableView for Autocompletion.
问题是表格显示格式不正确，我有以下问题：
The problem is the table display is not properly formatted, i have following problems with this:
-
细节不按顺序排序（例如：如果按下它不显示单词以第一个开头，则显示为喜欢的单词）。
the details are not in order(ex: if i press a it is not displaying words starts with a first, it display as it likes).
我有三个我的txt文件中的一些单词（如Apple，A pple，A.pple）;
在我的表格中它只显示A pple和A.pple而不是Apple如果我开始搜索字母'Ap'，即使它显示A pple直到我写'A P'然后它停止显示单词。
i have three kind of words in my txt file(like Apple, A pple, A.pple); in my table it display only A pple and A.pple but not Apple if i start search with letter 'Ap' even it displays A pple till i write 'A P' then it stops displaying the words.
任何人都可以告诉我该怎么做吗？
Can any one let me know what to do that?
请找我的代码供您参考：
Please find my code for your reference:
很抱歉发布所有代码，我这样做是因为我找不到它出错了!!!
Sorry for posting all the code, i am doing because i cannot find were its going wrong!!!
- (void) finishedSearching {
[usernameField resignFirstResponder];
autoCompleteTableView.hidden = YES;
}
- (void)viewDidLoad
{
NSString *filePath = [[NSBundle mainBundle] pathForResource:@"employee.txt" ofType:nil];
NSData* data = [NSData dataWithContentsOfFile:filePath];
//Convert the bytes from the file into a string
NSString* string = [[NSString alloc] initWithBytes:[data bytes] length:[data length] encoding:NSUTF8StringEncoding];
//Split the string around newline characters to create an array
NSString* delimiter = @"\n";
NSArray *item = [string componentsSeparatedByString:delimiter];
elementArray = [[NSMutableArray alloc] initWithArray:item];
usernameField = [[UITextField alloc] initWithFrame:CGRectMake(204, 405, 264, 31)];
usernameField.borderStyle = 3; // rounded, recessed rectangle
usernameField.autocorrectionType = UITextAutocorrectionTypeNo;
usernameField.autocapitalizationType = UITextAutocapitalizationTypeNone;
usernameField.textAlignment = UITextAlignmentLeft;
usernameField.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter;
usernameField.returnKeyType = UIReturnKeyDone;
usernameField.font = [UIFont fontWithName:@"Trebuchet MS" size:20];
usernameField.textColor = [UIColor blackColor];
usernameField.placeholder=@"Login id";
[usernameField setDelegate:self];
[self.view addSubview:usernameField];
autoCompleteArray = [[NSMutableArray alloc] init];
autoCompleteTableView = [[UITableView alloc] initWithFrame:CGRectMake(204, 450, 264, tableHeight) style:UITableViewStylePlain];
autoCompleteTableView.delegate = self;
autoCompleteTableView.dataSource = self;
autoCompleteTableView.scrollEnabled = YES;
autoCompleteTableView.hidden = YES;
autoCompleteTableView.rowHeight = tableHeight;
[self.view addSubview:autoCompleteTableView];
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)searchAutocompleteEntriesWithSubstring:(NSString *)substring {
// Put anything that starts with this substring into the autoCompleteArray
// The items in this array is what will show up in the table view
[autoCompleteArray removeAllObjects];
for(NSString *curString in elementArray) {
NSRange substringRangeLowerCase = [curString rangeOfString:[substring lowercaseString]];
NSRange substringRangeUpperCase = [curString rangeOfString:[substring uppercaseString]];
if (substringRangeLowerCase.length != 0 || substringRangeUpperCase.length != 0) {
[autoCompleteArray addObject:curString];
}
}
autoCompleteTableView.hidden = NO;
[autoCompleteTableView reloadData];
}
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
[self.view endEditing:YES];
[super touchesBegan:touches withEvent:event];
[self finishedSearching];
}
#pragma mark UITextFieldDelegate methods
// Close keyboard when Enter or Done is pressed
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
BOOL isDone = YES;
if (isDone) {
[self finishedSearching];
return YES;
} else {
return NO;
}
}
// String in Search textfield
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
NSString *substring = [NSString stringWithString:textField.text];
substring = [substring stringByReplacingCharactersInRange:range withString:string];
[self searchAutocompleteEntriesWithSubstring:substring];
return YES;
}
#pragma mark UITableViewDelegate methods
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger) section {
//Resize auto complete table based on how many elements will be displayed in the table
if (autoCompleteArray.count >=3) {
autoCompleteTableView.frame = CGRectMake(204, 450, 264, tableHeight*3);
return autoCompleteArray.count;
}
else if (autoCompleteArray.count == 2) {
autoCompleteTableView.frame = CGRectMake(204, 450, 264, tableHeight*2);
return autoCompleteArray.count;
}
else {
autoCompleteTableView.frame = CGRectMake(204, 450, 264, tableHeight);
return autoCompleteArray.count;
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = nil;
static NSString *AutoCompleteRowIdentifier = @"AutoCompleteRowIdentifier";
cell = [tableView dequeueReusableCellWithIdentifier:AutoCompleteRowIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:AutoCompleteRowIdentifier] ;
}
cell.textLabel.text = [autoCompleteArray objectAtIndex:indexPath.row];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *selectedCell = [tableView cellForRowAtIndexPath:indexPath];
usernameField.text = selectedCell.textLabel.text;
usernameField.text=[usernameField.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSLog(@"%@",usernameField.text);
[self finishedSearching];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
提前致谢!!!!
推荐答案
遵循此代码..你已经完成了所有正确但搜索元素是问题。你已经写了代码。如果你的检查长度单独。如果它不为null，它将显示数据。但你必须将第一个字母与元素数组进行比较。这样它工作正常。
follow this code.. U have done all correctly but searching the element is the problem. U have written the code. if your checking length alone. if its not null it will show data. but u have to compare the first letter with element array. so that it works fine.
- (void)searchAutocompleteEntriesWithSubstring:(NSString *)substring {
[autocompleteArray removeAllObjects];
for(NSString *curString in elementArray) {
NSRange substringRange = [curString rangeOfString:substring];
if (substringRange.location == 0) {
[autocompleteArray addObject:curString];
}
[autocompleteTableView reloadData];
}
}
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