像動作表一樣的自定義選取器視圖動畫

Question

如何動作像動作表一樣的自定義選取器視圖？

UIView *view = [[[UIView alloc]initWithFrame:CGRectMake(0,300,320,300)] autorelease]; 
view.backgroundColor = [UIColor brownColor]; 
[UIView beginAnimations:nil context:nil]; 
[UIView setAnimationDuration:1.0]; 
[UIView setAnimationTransition:UIViewAnimationTransitionNone forView:[self view] cache:YES]; 
[view setFrame:CGRectMake(0.0f,300.0f,320.0f,325.0f)]; 
[UIView commitAnimations]; 

Answer 1

正確的答案是自定義選擇器視圖，但它不會像動作表一樣動畫。但它會創建自定義選取器視圖。

items =[[NSArray alloc]initWithObjects:@"Hindi",@"English",nil]; 
pickerView=[[UIPickerView alloc] initWithFrame:CGRectMake(10,250,350,350)]; 
pickerView.transform = CGAffineTransformMakeScale(0.75f, 0.75f); 
pickerView.delegate = self; 
pickerView.dataSource = self; 
pickerView.showsSelectionIndicator = YES; 
pickerView.backgroundColor = [UIColor clearColor]; 
[pickerView selectRow:1 inComponent:0 animated:YES]; 
[self.view addSubview:view]; 


- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView; 
{ 
return 1; 
} 

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component; 
{ 
return [items count]; 
} 

- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component 
{ 
return[items objectAtIndex:row]; 
} 

Answer 2

就像你一樣：

UIView *view=[[[UIView alloc]initWithFrame:CGRectMake(0,460,320,300)]autorelease]; 
view.backgroundColor=[UIColor brownColor]; 

[UIView beginAnimations:nil context:nil]; 
[UIView setAnimationDuration:1.0]; 
[UIView setAnimationTransition:UIViewAnimationTransitionNone forView:[self view] cache:YES]; 

[view setFrame:CGRectMake(0,0,320,300)]; 

[UIView commitAnimations]; 

但是看看的CGRect。它的(x,y,width,height)。所以你必須使用第二個參數（y位置）爲視圖的垂直位置設置動畫。