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首先关闭标签将不起作用。我这样说是因为我创建了4个按钮，并且对于特定的单元格使用相同的标记，例如indexPath.row = tag。如何检查两个对象（UIButtons）是否相同
里面我TableViewCellForRowAtIndexpath
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *CellIdentifier = @"courseCell";
//Step 1: Check to se if we can reuse a cell from a row that has just rolled off the screen
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
//step 2: If there are no cell to reuse, create a new one
if (cell == nil){
cell = [[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
cell.selectionStyle = UITableViewCellSelectionStyleGray;
}
...
//-------------Creation of Custom Buttons-------------//
//-----img = "radioOn.png"-----//
//----img2 = "radioOff.png"----//
//----RadioButtonA----//
...
radioButtonA = [UIButton buttonWithType:UIButtonTypeCustom];
[radioButtonA addTarget:self action:@selector(radioButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
radioButtonA.tag=indexPath.row;
//----End RadioButtonA----//
//----RadioButtonB----//
radioButtonB = [UIButton buttonWithType:UIButtonTypeCustom];
[radioButtonB addTarget:self action:@selector(radioButtonClicked:)forControlEvents:UIControlEventTouchUpInside];
radioButtonB.tag =indexPath.row;
...
//----End RadioButtonB----//
//----RadioButtonC----//
radioButtonC = [UIButton buttonWithType:UIButtonTypeCustom];
[radioButtonC addTarget:self action:@selector(radioButtonClicked:)forControlEvents:UIControlEventTouchUpInside];
radioButtonC.tag = indexPath.row;
...
//----End RadioButtonC----//
//----RadioButtonNA----//
radioButtonNA = [UIButton buttonWithType:UIButtonTypeCustom];
radioButtonNA.tag = indexPath.row;
[radioButtonNA addTarget:self action:@selector(radioButtonClicked:)forControlEvents:UIControlEventTouchUpInside];
...
//----End RadioButtonC----//
//---------End of Radio Button Creations---------//
//---------UIStepper & StepperLabel Creation-----//
[cell.contentView addSubview:radioButtonA];
[cell.contentView addSubview:radioButtonB];
[cell.contentView addSubview:radioButtonC];
[cell.contentView addSubview:radioButtonNA];
//Step4: Return the cell
return cell;
}
#pragma mark - Buttons
- (void)radioButtonClicked:(UIButton *)sender
{
UIButton *myButton = sender;
// This Method and all the ones similar to this method is created to handle the UITouchUpInsideEvent that the user sends when pressing the radioButtons A-NA.
[radioButtons addObject:sender];
// Create an instance(object) of class NSIndexPath called indexPath and set its value the indexPath of the cell the user is currently in.
UITableViewCell *cell = (UITableViewCell *)[[sender superview] superview];
NSIndexPath *indexPath = [myTableView indexPathForCell:cell];
// Initialize two unique variables in order to check if the buttons being clicked are being referenced in the correct index.
int row = indexPath.row;
NSLog(@"Button is in row %d", row);
...
}
-(IBAction)button:(UIButton*)sender{
...
@try {
for (i=0; i<8; i++) {
if ([credits count ] ==0) {
break;
}
这里就是我试图访问我在小区创建的单选按钮。我想这样做是这样的
如果（[学分objectAtIndex：1]）== radioButtonA {
做的东西。原因im不说== [radioButtonA标签]是因为我有三个其他按钮都具有相同的标签。如果你阅读了代码，你就会明白为什么这些标签是这样设置的。 }
我要求的是1帮助，2有另一种方法来检查两个按钮即对象是否相等，而不必依赖于他们的标签。
不要担心尝试捕捉最后我用它来赶上抛出的异常。
if ([[[[credits objectAtIndex:i]titleLabel]text] isEqualToString:@"A"]) {
NSLog(@"radioA is in array");
creditHours+=[[valueArray objectAtIndex:i]doubleValue];
gradeEarned+=(GradeA.doubleValue *[[valueArray objectAtIndex:i]doubleValue]);
NSLog(@"%f",gradeEarned);
continue;
}
if ([[[[credits objectAtIndex:i]titleLabel]text] isEqualToString:@"B"]) {
NSLog(@"radioB is in array");
creditHours+=[[valueArray objectAtIndex:i]doubleValue];
gradeEarned+=(GradeB.doubleValue *[[valueArray objectAtIndex:i]doubleValue]);
continue;
}
if ([[[[credits objectAtIndex:i]titleLabel]text] isEqualToString:@"C"]){
NSLog(@"radioC is in array");
creditHours+=[[valueArray objectAtIndex:i]doubleValue];
gradeEarned+=(GradeC.doubleValue *[[valueArray objectAtIndex:i]doubleValue]);
continue;
}
if([credits objectAtIndex:i]== radioButtonNA){
NSLog(@"boboboobbobob");
continue;
}
}
}
@catch (NSException *exception) {
NSLog(@"NSException Caught");
NSLog(@"Name: %@",exception.name);
NSLog(@"Reason: %@", exception.reason);
}
@finally {
NSLog(@"in finally block");
}
// if ([credits objectAtIndex: i] == defaulter) {
// UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Failed to select all grades" message:[NSString stringWithFormat:@"Your grade selections have been reset"] delegate:self cancelButtonTitle:@"great"otherButtonTitles:nil];
// [alert show];
// [alert release];
// [self refreshArray];
// }
NSLog(@"%f",gradeEarned);
if (gradeEarned == 0) {
textLabel.text= [NSString stringWithFormat:@"%f",gradeEarned];
}else {
NSLog(@"boob");
sum= (gradeEarned)/(creditHours);
NSLog(@"%f",sum);
textLabel.text= [NSString stringWithFormat:@"%f",sum];
//[self refreshArray];
}
}
有关详细信息。在这里是日志...
的NSLog（@ “％@”，[币objectAtIndex：ⅰ]）; NSLog（@“％@”，radioButtonA）;
THE First output is the log of the [credits object atIndex:i]
UIButton：0x6c91430; frame =（86 110; 32 30）; opaque = NO;层= CALayer：0x6c914f0
2012-06-20 20：24：01.568 TableView [12557：f803] UIButton：0x6ea8ad0; frame =（86 110; 32 30）; opaque = NO; tag = 6;层= CALayer的：0x6e746e0
正如你所看到的UIBUttons是不同的。因此==操作符不工作
==应该正常工作。你有错误吗？如果是这样，错误是什么？堆栈跟踪？ – sosborn
与上述评论商定，具体而言，''==应用于对象测试地址是否相等，从而，如果它是由一个不同的变量引用的同一个对象，它会在那个一个地址。 –
这里是日志... NSLog（@“％@”，[credits objectAtIndex：i]）; NSLog（@“％@”，radioButtonA）;第一个输出是[信贷对象atIndex：i]的日志2012-06-20 20:22:14。219 TableView [12536：f803]>这第二个日志是radioButtonA的日志2012-06-20 20:22:14.220 TableView [12536：f803] > –
KING