Picker On AlertView Not Visible in IOS7 - objective-c

Question

My below code working fine in below iOS 7
I am trying to add picker view in alert that works fine in below ios7 version But in ios 7 it show white alert without picker view.
-(void)showPinPickerAlert
{
numberarr = [[NSMutableArray alloc]initWithObjects:#"0",#"1",#"2",#"3",#"4",#"5",#"6",#"7",#"8",#"9", nil];
UIAlertView *alert =[[UIAlertView alloc]initWithTitle:#"Enter Pin To Change Track me Option" message:#"\n\n\n\n\n\n\n" delegate:self cancelButtonTitle:#"Verify" otherButtonTitles:nil];
UIPickerView *picker=[[UIPickerView alloc]initWithFrame:CGRectMake(25, 30, 230, 60) ];
picker.dataSource=self;
picker.delegate=self;
// picker.backgroundColor=[UIColor blueColor];
picker.showsSelectionIndicator = YES;
// picker.autoresizingMask = UIViewAutoresizingFlexibleHeight;
picker.transform = CGAffineTransformMakeScale(0.6, 0.6);
alert.tag=100;
// picker.transform = CGAffineTransformMakeScale(1, 0.2);
[alert addSubview:picker];
[alert show];
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView;
{
return 4;
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
strPin=[[NSString stringWithFormat:#"%i%i%i%i",[pickerView selectedRowInComponent:0],[pickerView selectedRowInComponent:1],[pickerView selectedRowInComponent:2],[pickerView selectedRowInComponent:3]]mutableCopy];
NSLog(#"strPin=%#",strPin);
// mlabel.text= [arrayNo objectAtIndex:row];
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component;
{
return [numberarr count];
}
**//code try to change color of picker text and background thats work fine in below ios7 but in iOS 7 still shows white screen**
- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view
{
UILabel *label = (UILabel*) view;
if (label == nil)
{
label = [[UILabel alloc] init];
}
//[label setText:#"Whatever"];
// This part just colorizes everything, since you asked about that.
[label setTextColor:[UIColor whiteColor]];
[label setBackgroundColor:[UIColor blackColor]];
CGSize rowSize = [pickerView rowSizeForComponent:component];
CGRect labelRect = CGRectMake (0, 0, rowSize.width, rowSize.height);
[label setFrame:labelRect];
return label;
}
- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component;
{
pickerView.backgroundColor=[UIColor blackColor];
return [numberarr objectAtIndex:row];
}
OutPut in below
Output in IOS 7
How to fix it?

Answer 1

Adding subviews to a UIAlertView is not supported anymore, starting in iOS7.
You should implement your own view and try to do it similar to the alert view, or like other person said, use a 3rd party alert view like this one:
https://github.com/wimagguc/ios-custom-alertview

Answer 2

Most of the following code is from pre ios7 stack overflow answers.
PickerPrompt.h
#import <UIKit/UIKit.h>
#interface PickerPrompt : UIAlertView <UIPickerViewDelegate, UIPickerViewDataSource, UITextFieldDelegate>
{
UIPickerView *_pickerView;
NSMutableArray *_options;
}
#property (readonly) NSString *enteredText;
- (id)initWithTitle:(NSString *)title message:(NSString *)message options:(NSMutableArray*)options delegate:(id)delegate cancelButtonTitle:(NSString *)cancelButtonTitle okButtonTitle:(NSString *)okButtonTitle;
#end
pickerPrompt.m
#import "PickerPrompt.h"
#implementation PickerPrompt
#define VIEW_TAG 49
#define SUB_LABEL_TAG 52
#define LABEL_TAG 53
#define COMPONENT_WIDTH 250
#define LABEL_WIDTH 10
#synthesize enteredText;
- (id)initWithTitle:(NSString *)title message:(NSString *)message options:(NSMutableArray*)options delegate:(id)delegate cancelButtonTitle:(NSString *)cancelButtonTitle okButtonTitle:(NSString *)okayButtonTitle
{
if (self = [super initWithTitle:title message:message delegate:delegate cancelButtonTitle:cancelButtonTitle otherButtonTitles:okayButtonTitle, nil])
{
_options = options;
_pickerView = [[UIPickerView alloc] init];
[_pickerView sizeToFit];
[_pickerView setAutoresizingMask:(UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight)];
[_pickerView setDelegate:self];
[_pickerView setDataSource:self];
[_pickerView setShowsSelectionIndicator:TRUE];
// Change from pre iOS 7
[self setAlertViewStyle:UIAlertViewStylePlainTextInput];
[[self textFieldAtIndex:0] setDelegate:self];
[[self textFieldAtIndex:0] setInputView:_pickerView];
[[self textFieldAtIndex:0] becomeFirstResponder];
}
return self;
}
#pragma mark -
#pragma mark Picker delegate
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
if (pickerView == _pickerView) {
return [_options count];
}
return [_options count];
}
- (UIView *)labelCellWithWidth:(CGFloat)width rightOffset:(CGFloat)offset {
// Create a new view that contains a label offset from the right.
CGRect frame = CGRectMake(0.0, 0.0, width, 32.0);
UIView *view = [[[UIView alloc] initWithFrame:frame] autorelease];
view.tag = VIEW_TAG;
frame.size.width = width - offset;
UILabel *subLabel = [[UILabel alloc] initWithFrame:frame];
subLabel.textAlignment = UITextAlignmentRight;
subLabel.backgroundColor = [UIColor clearColor];
subLabel.font = [UIFont systemFontOfSize:24.0];
subLabel.userInteractionEnabled = NO;
subLabel.tag = SUB_LABEL_TAG;
[view addSubview:subLabel];
[subLabel release];
return view;
}
- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
NSString *fullString = [[textField text] stringByAppendingString:string];
for (NSString* object in _options) {
if ([object isEqualToString:fullString]) {
return YES;
}
}
return NO;
}
- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view {
UIView *returnView = nil;
if ((view.tag == VIEW_TAG) || (view.tag == LABEL_TAG)) {
returnView = view;
}
else {
returnView = [self labelCellWithWidth:COMPONENT_WIDTH rightOffset:LABEL_WIDTH];
}
// The text shown in the component is just the number of the component.
NSString *text = [_options objectAtIndex:row];
// Where to set the text in depends on what sort of view it is.
UILabel *theLabel = nil;
if (returnView.tag == VIEW_TAG) {
theLabel = (UILabel *)[returnView viewWithTag:SUB_LABEL_TAG];
}
else {
theLabel = (UILabel *)returnView;
}
theLabel.text = text;
return returnView;
}
- (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component {
return COMPONENT_WIDTH;
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component {
[[self textFieldAtIndex:0] setText:[_options objectAtIndex:row]];
}
- (NSString *)enteredText
{
return [[self textFieldAtIndex:0] text];
}
#end
How to use (called from an alert view delegate):
PickerPrompt *prompt = [PickerPrompt alloc];
NSMutableArray *options = [[NSMutableArray alloc] initWithObjects:#"option 1", #"option 2", nil];
prompt = [prompt initWithTitle:#"Select Option" message:#"Select Option" options:options delegate:self cancelButtonTitle:#"Cancel" okButtonTitle:#"Okay"];
[prompt show];
[prompt release];