UIslider价值问题
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我在表格视图中有一个滑块。在滑块的动作方法中，我做了一些计算并重新加载了表格。当表格第二次重新加载时，它将滑块值设置为其最小值。
谁能知道为什么会发生这个奇怪的问题。
提前致谢！
码：
- (IBAction)sliderAction:(id)sender
{
UISlider* durationSlider = sender;
float gmval,finalCalculationValue;
float tempgmValue=[self.gmValue floatValue];
gmval=durationSlider.value;
tempgmValue=gmval/tempgmValue;
finalCalculationValue=tempgmValue/100;
tempgmValue=finalCalculationValue*[self.gmValue floatValue];
self.gmValue=[NSString stringWithFormat:@\"%0.f\",tempgmValue];
self.label.text=[NSString stringWithFormat:@\"%f\",tempgmValue];
[self.tableView reloadData];
}
- (UITableViewCell *)tableView:(UITableView *)tbleView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *MyIdentifier = @\"MyIdentifier\";
UITableViewCell *cell;
UILabel *label
cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier];
if(cell == nil){
cell = [self reuseTableViewCellWithIdentifier:MyIdentifier withIndexPath:indexPath];
}
return cell;
}
}
-(UITableViewCell *)reuseTableViewCellWithIdentifier:(NSString *)identifier withIndexPath:(NSIndexPath *)indexPath {
CGRect cellRectangle;
cellRectangle = CGRectMake(0.0, 0.0, 320, 100);
UITableViewCell *cell = [[[UITableViewCell alloc] initWithFrame:cellRectangle reuseIdentifier:identifier] autorelease];
UILabel *label1;
cellRectangle = CGRectMake(15.0, 50, 200, 20.0);
label1 = [[UILabel alloc] initWithFrame:cellRectangle];
label1.tag = 5; label1.textAlignment = UITextAlignmentCenter;
[label1 setBackgroundColor:[UIColor clearColor]];
[cell.contentView addSubview:label1];
[label1 release];
UISlider *gmSlider=[[UISlider alloc]initWithFrame:CGRectMake(13, 20, 180, 21)]; gmSlider.tag=2003; gmSlider.backgroundColor = [UIColor clearColor];
gmSlider.continuous = YES;
gmSlider.minimumValue=10;
gmSlider.maximumValue=200; gmSlider.value=@\"100\"; [gmSlider addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged];
[cell.contentView addSubview:gmSlider];
}
return cell;
}
没有找到相关结果
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荆怖赡
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *MyIdentifier = @\"MyIdentifier\"; UITableViewCell *cell; UILabel *label ; CGRect cellRectangle; cellRectangle = CGRectMake(0.0, 0.0, 320, 100); cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier]; if(cell == nil){ cell = [self reuseTableViewCellWithIdentifier:MyIdentifier withIndexPath:indexPath]; } for (UIView * view in cell.contentView.subviews) { [view removeFromSuperview]; view = nil; } UILabel *label1; cellRectangle = CGRectMake(15.0, 50, 200, 20.0); label1 = [[UILabel alloc] initWithFrame:cellRectangle]; label1.tag = 5; label1.textAlignment = UITextAlignmentCenter; [label1 setBackgroundColor:[UIColor clearColor]]; [cell.contentView addSubview:label1]; [label1 release]; UISlider *gmSlider=[[UISlider alloc]initWithFrame:CGRectMake(13, 20, 180, 21)]; gmSlider.tag=2003; gmSlider.backgroundColor = [UIColor clearColor]; gmSlider.continuous = YES; gmSlider.minimumValue=10; gmSlider.maximumValue=200; gmSlider.value=100.0; [gmSlider addTarget:self action:@selector(sliderAction:) forControlEvents:UIControlEventValueChanged]; [cell.contentView addSubview:gmSlider]; return cell; } -(UITableViewCell *)reuseTableViewCellWithIdentifier:(NSString *)identifier withIndexPath:(NSIndexPath *)indexPath { CGRect cellRectangle; cellRectangle = CGRectMake(0.0, 0.0, 320, 100); UITableViewCell *cell = [[[UITableViewCell alloc] initWithFrame:cellRectangle reuseIdentifier:identifier] autorelease]; return cell; }埃庐
- (UITableViewCell*)tableView:(UITableView*)table cellForRowAtIndexPath:(NSIndexPath*)indexPath { MyTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:someIdentifier]; if (cell == nil) { cell = [[MyTableViewCell alloc] init...]; [cell autorelease]; // autorelease here to balance alloc // Don\'t set the cell up in here or you\'ll have problems! } // Set the cell up here so that you handle both the new cell and the reuse cases. cell.sliderValue = [self sliderValueAtIndex:indexPath.row]; cell.label = [self labelForValueAtIndex:indexPath.row]; // ...and so on.... return cell; }稀瓣囊
时，您都要设置滑块的值。您已将该值设置为新计算的值，而不是常数100。