ios - 单击不同的按钮时更改 UIButton 的图像

Question

在你开始之前... ControlState 默认设置为 Normal 并设置了 Image

当用户单击按钮时，它会更改按钮的图像，因为我将该按钮的目标设置为与所需的方法相对应。当调用 -(void)RADIOBUTTONAClicked: 时，我需要更改所有其他 RADIOBUTTONS 的图像

-(void)RadioButtonACLicked:{
//code to change radioButton A, the code i have works 
// Code to change all other buttons does not work. 
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{ .... //配置单元...

....
//-------------Creation of Custom Buttons-------------// 
//----RadioButtonA----//
....
[radioButtonA addTarget:self action:@selector(radioButtonAClicked:)forControlEvents:UIControlEventTouchUpInside];

 [radioButtonA setImage:img2 forState:UIControlStateNormal];

ButtonB 的创建

radioButtonB = [UIButton buttonWithType:UIButtonTypeCustom];

[radioButtonB addTarget:self action:@selector(radioButtonBClicked:)forControlEvents:UIControlEventTouchUpInside];
[radioButtonB setImage:img2 forState:UIControlStateNormal]; 

所以当单击单选按钮时，我需要将所有其他按钮图像设置为相反。

Answer 1

花了我一段时间让它工作

(void)radioButtonClicked:(UIButton *)sender
{
...

// Sets the UIImage for the custom RadioButtons. 
//img refers to radioOn and img2 refers to radioOff.
// uses an if esle conditional block inorder to correctly change the Images if teh conditions are met.

for(int i=0;i<[self.radioButtons count];i++){
    if ([[self.radioButtons objectAtIndex:i]tag] == sender.tag) {
    [[self.radioButtons objectAtIndex:i] setImage:img2 forState:UIControlStateNormal];

}

[sender setImage:img forState:UIControlStateNormal];

}