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How do I change UIPickerView text color in renderer view using Xamarin.Forms.iOS?

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2

I have used UIPickerView in ios renderer file.I tried to change text and background color of view. Used SetValueForKeyPath override method to change text color. While picker initially loaded into view text color was not changed but it does when I change selected index(Problem with initial loading).

protected override void OnElementChanged(ElementChangedEventArgs<CustomGrid> e)

 if (e.NewElement != null)
 
 var nativeView = new UIPickerView();
 nativeView.Model = new PickerSource();
 nativeView.BackgroundColor = UIColor.Yellow;
 nativeView.SetValueForKeyPath(UIColor.Red, (NSString)"textColor");
 CGRect cGRect = new CGRect(0, 0, 100, 100);
 SetNativeControl(nativeView);
 

 base.OnElementChanged(e);

c# xamarin.forms xamarin.ios uipickerview

share|improve this question

edited Mar 23 at 21:13

Brandon Minnick

6,925123278

asked Mar 22 at 10:54

Karthik Raja AKRKarthik Raja AKR

193

add a comment | 

2

I have used UIPickerView in ios renderer file.I tried to change text and background color of view. Used SetValueForKeyPath override method to change text color. While picker initially loaded into view text color was not changed but it does when I change selected index(Problem with initial loading).

protected override void OnElementChanged(ElementChangedEventArgs<CustomGrid> e)

 if (e.NewElement != null)
 
 var nativeView = new UIPickerView();
 nativeView.Model = new PickerSource();
 nativeView.BackgroundColor = UIColor.Yellow;
 nativeView.SetValueForKeyPath(UIColor.Red, (NSString)"textColor");
 CGRect cGRect = new CGRect(0, 0, 100, 100);
 SetNativeControl(nativeView);
 

 base.OnElementChanged(e);

c# xamarin.forms xamarin.ios uipickerview

share|improve this question

edited Mar 23 at 21:13

Brandon Minnick

6,925123278

asked Mar 22 at 10:54

Karthik Raja AKRKarthik Raja AKR

193

add a comment | 

I have used UIPickerView in ios renderer file.I tried to change text and background color of view. Used SetValueForKeyPath override method to change text color. While picker initially loaded into view text color was not changed but it does when I change selected index(Problem with initial loading).

protected override void OnElementChanged(ElementChangedEventArgs<CustomGrid> e)

 if (e.NewElement != null)
 
 var nativeView = new UIPickerView();
 nativeView.Model = new PickerSource();
 nativeView.BackgroundColor = UIColor.Yellow;
 nativeView.SetValueForKeyPath(UIColor.Red, (NSString)"textColor");
 CGRect cGRect = new CGRect(0, 0, 100, 100);
 SetNativeControl(nativeView);
 

 base.OnElementChanged(e);

c# xamarin.forms xamarin.ios uipickerview

share|improve this question

edited Mar 23 at 21:13

Brandon Minnick

6,925123278

asked Mar 22 at 10:54

Karthik Raja AKRKarthik Raja AKR

193

protected override void OnElementChanged(ElementChangedEventArgs<CustomGrid> e)

 if (e.NewElement != null)
 
 var nativeView = new UIPickerView();
 nativeView.Model = new PickerSource();
 nativeView.BackgroundColor = UIColor.Yellow;
 nativeView.SetValueForKeyPath(UIColor.Red, (NSString)"textColor");
 CGRect cGRect = new CGRect(0, 0, 100, 100);
 SetNativeControl(nativeView);
 

 base.OnElementChanged(e);

share|improve this question

edited Mar 23 at 21:13

Brandon Minnick

6,925123278

asked Mar 22 at 10:54

Karthik Raja AKRKarthik Raja AKR

193

share|improve this question

edited Mar 23 at 21:13

Brandon Minnick

6,925123278

asked Mar 22 at 10:54

Karthik Raja AKRKarthik Raja AKR

193

edited Mar 23 at 21:13

Brandon Minnick

6,925123278

edited Mar 23 at 21:13

Brandon Minnick

6,925123278

asked Mar 22 at 10:54

Karthik Raja AKRKarthik Raja AKR

193

asked Mar 22 at 10:54

Karthik Raja AKRKarthik Raja AKR

193

1 Answer
1

active

oldest

votes

0

I advise against using a PickerRenderer to change the text color, because the Xamarin.Forms.Platform.iOS.PickerRenderer is very complex; it's actually a UIToolbar, UIBarButtonItem and a UITextField combined into a UIPickerView.

The code for Xamarin.Forms.Platform.iOS.PickerRenderer is open-source if you'd like to see how the Xamarin.Forms team initialized a Picker on iOS.

Xamarin.Forms.Picker

It is much easier to set the TextColor in Xamarin.Forms:

var picker = new Xamarin.Forms.Picker

 TextColor = Color.Red
;

share|improve this answer

edited Mar 23 at 23:08

answered Mar 23 at 21:14

Brandon MinnickBrandon Minnick

6,925123278

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks a lot, but UIPickerView provides many functionalities that I need so I have used it for my entire project. Now I get this issue, Can you please suggest me a solution to overcome this?
  
  – Karthik Raja AKR
  Mar 26 at 6:58
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Out of curiosity, what are doing with a Picker that requires a custom renderer? Check out the link to the Xamarin.Forms source code and emulate how they initialize a PickerRenderer on iOS.
  
  – Brandon Minnick
  Mar 26 at 16:24
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I just used a Entry in Forms view, In renderer view I have used EditText, if editText got focus then picker popup will shown. My problem is while picker popup initially loading into view text color remains same. But it changes after changing picker selected item.
  
  – Karthik Raja AKR
  Mar 27 at 6:57
  

  
  
  
  

add a comment | 

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0

I advise against using a PickerRenderer to change the text color, because the Xamarin.Forms.Platform.iOS.PickerRenderer is very complex; it's actually a UIToolbar, UIBarButtonItem and a UITextField combined into a UIPickerView.

The code for Xamarin.Forms.Platform.iOS.PickerRenderer is open-source if you'd like to see how the Xamarin.Forms team initialized a Picker on iOS.

Xamarin.Forms.Picker

It is much easier to set the TextColor in Xamarin.Forms:

var picker = new Xamarin.Forms.Picker

 TextColor = Color.Red
;

share|improve this answer

edited Mar 23 at 23:08

answered Mar 23 at 21:14

Brandon MinnickBrandon Minnick

6,925123278

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks a lot, but UIPickerView provides many functionalities that I need so I have used it for my entire project. Now I get this issue, Can you please suggest me a solution to overcome this?
  
  – Karthik Raja AKR
  Mar 26 at 6:58
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Out of curiosity, what are doing with a Picker that requires a custom renderer? Check out the link to the Xamarin.Forms source code and emulate how they initialize a PickerRenderer on iOS.
  
  – Brandon Minnick
  Mar 26 at 16:24
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I just used a Entry in Forms view, In renderer view I have used EditText, if editText got focus then picker popup will shown. My problem is while picker popup initially loading into view text color remains same. But it changes after changing picker selected item.
  
  – Karthik Raja AKR
  Mar 27 at 6:57
  

  
  
  
  

add a comment | 

0

I advise against using a PickerRenderer to change the text color, because the Xamarin.Forms.Platform.iOS.PickerRenderer is very complex; it's actually a UIToolbar, UIBarButtonItem and a UITextField combined into a UIPickerView.

The code for Xamarin.Forms.Platform.iOS.PickerRenderer is open-source if you'd like to see how the Xamarin.Forms team initialized a Picker on iOS.

Xamarin.Forms.Picker

It is much easier to set the TextColor in Xamarin.Forms:

var picker = new Xamarin.Forms.Picker

 TextColor = Color.Red
;

share|improve this answer

edited Mar 23 at 23:08

answered Mar 23 at 21:14

Brandon MinnickBrandon Minnick

6,925123278

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks a lot, but UIPickerView provides many functionalities that I need so I have used it for my entire project. Now I get this issue, Can you please suggest me a solution to overcome this?
  
  – Karthik Raja AKR
  Mar 26 at 6:58
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Out of curiosity, what are doing with a Picker that requires a custom renderer? Check out the link to the Xamarin.Forms source code and emulate how they initialize a PickerRenderer on iOS.
  
  – Brandon Minnick
  Mar 26 at 16:24
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I just used a Entry in Forms view, In renderer view I have used EditText, if editText got focus then picker popup will shown. My problem is while picker popup initially loading into view text color remains same. But it changes after changing picker selected item.
  
  – Karthik Raja AKR
  Mar 27 at 6:57
  

  
  
  
  

add a comment | 

I advise against using a PickerRenderer to change the text color, because the Xamarin.Forms.Platform.iOS.PickerRenderer is very complex; it's actually a UIToolbar, UIBarButtonItem and a UITextField combined into a UIPickerView.

The code for Xamarin.Forms.Platform.iOS.PickerRenderer is open-source if you'd like to see how the Xamarin.Forms team initialized a Picker on iOS.

Xamarin.Forms.Picker

It is much easier to set the TextColor in Xamarin.Forms:

var picker = new Xamarin.Forms.Picker

 TextColor = Color.Red
;

share|improve this answer

edited Mar 23 at 23:08

answered Mar 23 at 21:14

Brandon MinnickBrandon Minnick

6,925123278

var picker = new Xamarin.Forms.Picker

 TextColor = Color.Red
;

share|improve this answer

edited Mar 23 at 23:08

answered Mar 23 at 21:14

Brandon MinnickBrandon Minnick

6,925123278

answered Mar 23 at 21:14

Brandon MinnickBrandon Minnick

6,925123278

answered Mar 23 at 21:14

Brandon MinnickBrandon Minnick

6,925123278