CODEWITHSUNDEEP
iosobjective-cxcodecustomizationuipickerview
Nischal Hada
Nischal Hada

Reputation: 3288

How to customise UIPickerView height?

How can I customise the height of a UIPickerView? I would like it to be taller more than 250.

I have done the following but I'm unable to set the given height.

-(void)pickerview:(id)sender
{
    pickerView=[[UIPickerView alloc] initWithFrame:CGRectMake(0,200,320,400)];
    pickerView.transform = CGAffineTransformMakeScale(0.75f, 0.75f);
    pickerView.delegate = self;
    pickerView.dataSource = self;
    pickerView.showsSelectionIndicator = YES;
    pickerView.backgroundColor = [UIColor lightGrayColor];
    [pickerView selectRow:1 inComponent:0 animated:YES];
    [self.view addSubview:pickerView];
    // [contentView addSubview:pickerView];
}

Upvotes: 3

Views: 7003

Answers (1)

aBilal17
aBilal17

Reputation: 3142

Here there are only three valid heights for UIPickerView (162.0, 180.0 and 216.0).

You can use the CGAffineTransformMakeTranslation and CGAffineTransformMakeScale functions to properly fit the picker to your convenience.

Example:

CGAffineTransform t0 = CGAffineTransformMakeTranslation( 0,
    pickerview.bounds.size.height/2 );
CGAffineTransform s0 = CGAffineTransformMakeScale(1.0, 0.5);
CGAffineTransform t1 = CGAffineTransformMakeTranslation( 0,
    pickerview.bounds.size.height/-2 );
pickerview.transform = CGAffineTransformConcat( t0,
    CGAffineTransformConcat(s0, t1) );

The above code change the height of picker view to half and re-position it to the exact (Left-x1, Top-y1) position.

Refer more here. How to change UIPickerView height

Upvotes: 9

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