我希望它们一次显示在屏幕4上,所以我正在考虑为其创建一个UIScrollview并添加一个带有按钮的子视图。我怎么能添加让我们说20个按钮,因为我不能在屏幕上全部显示它们?
答案 0 :(得分:0)
如何在数组中添加按钮。 这样的事情:(只是一个片段)
int row = 0;
int column = 0;
for(int i = 0; i < _thumbs.count; ++i) {
UIImage *thumb = [_thumbs objectAtIndex:i];
UIButton * button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(column*60+10, row*60+10, 60, 75);
[button setImage:thumb forState:UIControlStateNormal];
[button addTarget:self
action:@selector(buttonClicked:)
forControlEvents:UIControlEventTouchUpInside];
button.tag = i;
[scrollView addSubview:button];
// If you want to show only 4 buttons, just tweak it here. You can do this method in anyway you like
if (column == 4) {
column = 0;
row++;
} else {
column++;
}
}
[scrollView setContentSize:CGSizeMake(300, (row+1) * 60 + 10)];
希望这有帮助。