Question

点一个Button让UIPickerView从下面弹出来是怎么做的

Answer 1

写一个方法
-(void) addPickerView {
if (pickerView == nil) {
pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 460, 320, 460)];
pickerView.delegate = self;
pickerView.dataSource = self;
pickerView.showsSelectionIndicator = YES;
[self.view addSubview:pickerView];
[pickerView release];
}
}

再用事件调用这个方法
[UIView beginAnimations: @"Animation" context:nil];
[UIView setAnimationDuration:0.3];
pickerView.frame = CGRectMake(0, 240, 320, 460);
[UIView commitAnimations];