XCODE：更改后如何保存按钮图像？
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更新 - -
好的，所以我找到了一种方法。...可能不是正确的方法，但是我对xcode还是陌生的，这种方法似乎对我有用。也许有人可以改善这个想法。
最初的问题是更改按钮图像后如何保存？好的，这就是...。我为图像设置了一个自定义按钮，所以我要做的第一件事就是使用以下代码更改该按钮的图像：（顺便说一句，它是为了使您单击一个按钮来更改自定义按钮的图像）
.h file
@interface viewcontroller{
IBOutlet UIButton *btnSetImage1;
}
@property (nonatomic, retain) IBOutlet UIButton *btnSetImage1;
.m file
@synthesize btnSetImage1;
//Inside a button\'s action
UIImage *btnImage1 = [UIImage imageNamed:@\"button_green.png\"];
[btnSetImage1 setImage:btnImage1 forState:UIControlStateNormal];
.h file
@interface viewcontroller{
IBOutlet UIButton *btnSetImage1;
IBOutlet UIImageView *buttonImgChange1;
}
@property (nonatomic, retain) IBOutlet UIButton *btnSetImage1;
@property (nonatomic, retain) IBOutlet UIImageView *buttonImgChange1;
.m file
@synthesize btnSetImage1;
@synthesize buttonImgChange1;
//Inside a button\'s action
UIImage *btnImage1 = [UIImage imageNamed:@\"button_green.png\"];
[btnSetImage1 setImage:btnImage1 forState:UIControlStateNormal];
//Set image to variable
buttonImgChange1 = [[UIImageView alloc] initWithImage:btnImage1];
//SAVE CHANGES
// Create instances of NSData
UIImage *savedButtonImage1 = buttonImgChange1.image;
NSData *buttonData1 = UIImagePNGRepresentation(savedButtonImage1);
// Store the data
NSUserDefaults *buttondefaults1 = [NSUserDefaults standardUserDefaults];
[buttondefaults1 setObject:buttonData1 forKey:@\"buttonImage1\"];
[buttondefaults1 synchronize];
//-----------UPDATE BUTTONS---------------
// Get the stored data before the view loads
NSUserDefaults *buttondefaults1 = [NSUserDefaults standardUserDefaults];
NSData *buttonData1 = [buttondefaults1 dataForKey:@\"buttonImage1\"];
UIImage *savedButtonImage1 = [UIImage imageWithData:buttonData1];
// Update the UI elements with the saved data
buttonImgChange1.image = savedButtonImage1;
//Update buttons
UIImage *btnImage1 = savedButtonImage1;
[btnSetImage1 setImage:btnImage1 forState:UIControlStateNormal];
buttonImgChange1 = [[UIImageView alloc] initWithImage:btnImage1];
没有找到相关结果
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