xcode UIbutton选中状态
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UIbutton selected state
提问by Marco
I am making an app with 20 questions, and you can answer Yes or No with the buttons for each questions. so I using 40 buttons. when I clic the YES button it should remain selected (there is a default image and selected image), if I click NO it should remain selected and deselected the YESbutton. this is the code i am using. it works with 2 buttons, but it does not work with more buttons.
我正在制作一个包含 20 个问题的应用程序，您可以使用每个问题的按钮回答是或否。所以我使用了 40 个按钮。当我点击 YES 按钮时，它应该保持选中状态（有一个默认图像和选定的图像），如果我单击 NO 它应该保持选中状态并取消选择 YES 按钮。这是我正在使用的代码。它适用于 2 个按钮，但不适用于更多按钮。
.h
。H
IBOutlet UIButton *bot2;
IBOutlet UIButton *bot3;
IBOutlet UIButton *bot4;
IBOutlet UIButton *bot5;
40in total }
共40个}
-(IBAction)a:(id)sender;
-(IBAction)b:(id)sender;
-(IBAction)c:(id)sender;
-(IBAction)d:(id)sender;
-(IBAction)e:(id)sender;
-(IBAction)f:(id)sender;
-(IBAction)g:(id)sender;
-(IBAction)h:(id)sender;
-(IBAction)i:(id)sender;
.....40 in total
.....40 共
@end
.m
.m
-(IBAction)a:(id)sender
{
if (ButtonSelected == 0)
{
[bot2 setSelected:YES];
ButtonSelected = 1;
}
else
{
[bot2 setSelected:NO];
ButtonSelected = 0;
}
}
-(IBAction)b:(id)sender
{
if (ButtonSelected == 0)
{
[bot3 setSelected:YES];
ButtonSelected = 1;
}
else
{
[bot3 setSelected:NO];
ButtonSelected = 0;
}
}
-(IBAction)c:(id)sender
{
if (ButtonSelected == 0)
{
[bot4 setSelected:YES];
ButtonSelected = 1;
}
else
{
[bot4 setSelected:NO];
ButtonSelected = 0;
}
}
ecc eccc......
ecc eccc……
回答by Joubert Nel
For this scenario, it is probably better to use instances of UISegmentedControl for each Yes/No combo.
对于这种情况，最好为每个 Yes/No 组合使用 UISegmentedControl 的实例。
