// 删除
deleteButton = [[UIButton alloc] initWithFrame:CGRectMake(51, 5, 79, 23)];
deleteButton.backgroundColor = [UIColor clearColor];
[deleteButton setBackgroundImage:[UIImage imageNamed:@"Delete.png"] forState:UIControlStateNormal];
[deleteButton setImage:[UIImage imageNamed:@"Delete_e.png"] forState:UIControlStateHighlighted];
[deleteButton addTarget:self action:@selector(delete:) forControlEvents:UIControlEventTouchUpInside];
deleteButton.enabled=NO;
[self addSubview:deleteButton];
假如将命令修改为:[deleteButton addTarget:self action:@selector(delete:) forControlEvents:UIControlEventTouchDown];
那么Delete_e.png
这张图片 在点击高亮的时候,就不会替换背景显示出来.另外附使用到的deletButton函数.
1.使deleteButton有效的一个方法:
- (void)closeChunk
{
if(isChunkClosed)return;
[self performSelector:@selector(animaCloseChunk:)];
if(newBlocks[selctNewBlockIndex].type==kBlockTypeSigned){
[deleteButton setBackgroundImage:[UIImage imageNamed:@"Delete_Green.png"] forState:UIControlStateNormal];
[deleteButton setImage:[UIImage imageNamed:@"Delete_Red.png"] forState:UIControlStateHighlighted];
deleteButton.enabled=YES;
}else{
[deleteButton setBackgroundImage:[UIImage imageNamed:@"Delete.png"] forState:UIControlStateNormal];
[deleteButton setImage:[UIImage imageNamed:@"Delete.png"] forState:UIControlStateHighlighted];
deleteButton.enabled=NO;
}
}
2.deletButton方法:
- (void)delete:(id)sender{
[deleteButton setBackgroundImage:[UIImage imageNamed:@"Delete.png"] forState:UIControlStateNormal];
[deleteButton setImage:[UIImage imageNamed:@"Delete.png"] forState:UIControlStateHighlighted];
deleteButton.enabled=NO;
}