自定义UIAlertView（UITableView）

UIAlertTableView.h

#import <UIKit/UIKit.h>



@class UIAlertView;



@interface UIAlertTableView : UIAlertView {

    UIAlertView *alertView;

    UITableView *tableView;

    int tableHeight;

    int tableExtHeight;    

    id <UITableViewDataSource> dataSource;

    id <UITableViewDelegate> tableDelegate;

}



@property (nonatomic, assign) id dataSource;

@property (nonatomic, assign) id tableDelegate;



@property (nonatomic, readonly) UITableView *tableView;

@property (nonatomic, assign) int tableHeight;



- (void)prepare;



@end

UIAlertTableView.m

#import "UIAlertTableView.h"

#define kTablePadding 8.0f

@interface UIAlertView (private)
- (void)layoutAnimated:(BOOL)fp;
@end

@implementation UIAlertTableView

@synthesize dataSource;
@synthesize tableDelegate;
@synthesize tableHeight;
@synthesize tableView;

- (void)layoutAnimated:(BOOL)fp {
    [super layoutAnimated:fp];
    [self setFrame:CGRectMake(self.frame.origin.x, self.frame.origin.y - tableExtHeight / 2, self.frame.size.width, self.frame.size.height + tableExtHeight)];
    UIView *lowestView;
    int i = 0;
    while (![[self.subviews objectAtIndex:i] isKindOfClass:[UIControl class]]) {
        lowestView = [self.subviews objectAtIndex:i];
        i++;
    }    
    CGFloat tableWidth = 262.0f;    
    tableView.frame = CGRectMake(11.0f, lowestView.frame.origin.y + lowestView.frame.size.height + 2 * kTablePadding, tableWidth, tableHeight);    
    for (UIView *v in self.subviews) {
        if ([v isKindOfClass:[UIControl class]]) {
            v.frame = CGRectMake(v.frame.origin.x, v.frame.origin.y + tableExtHeight, v.frame.size.width, v.frame.size.height);
        }
    }    
}

- (void)show{
    [self prepare];
    [super show];
}

- (void)prepare {
    if (tableHeight == 0) {
        tableHeight = 150.0f;
    }    
    tableExtHeight = tableHeight + 2 * kTablePadding;    
    tableView = [[UITableView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 0.0f, 0.0f) style:UITableViewStylePlain];
    tableView.backgroundColor = [UIColor orangeColor];
    tableView.delegate = tableDelegate;
    tableView.dataSource = dataSource;        
    [self insertSubview:tableView atIndex:0];    
    [self setNeedsLayout];
}

- (void)dealloc {
    [tableView release];
    [super dealloc];
}

@end

AlertTableViewController.h

#import <UIKit/UIKit.h>



@interface AlertTableViewController : UIViewController <UIAlertViewDelegate, UITableViewDelegate, UITableViewDataSource> {

    UITableView *myTableView;

    NSArray *array;

    NSIndexPath    *lastIndexPath;    

}



@property (nonatomic, retain) NSIndexPath *lastIndexPath;



- (IBAction)btnClick:sender;



@end

AlertTableViewController.m

#import "AlertTableViewController.h"

#import "UIAlertTableView.h"



@implementation AlertTableViewController



@synthesize lastIndexPath;



- (void)viewDidLoad {

    array = [[NSArray alloc] initWithObjects:@"test1", @"test2", @"test3", @"test4", nil];

    [super viewDidLoad];

}



- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    return [array count];

}



- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {    

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil) {

        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];

    }

    NSUInteger row = [indexPath row];

    NSUInteger oldRow = [lastIndexPath row];

    cell.textLabel.text = [array objectAtIndex:row];

    cell.accessoryType = (row == oldRow && lastIndexPath != nil) ? UITableViewCellAccessoryCheckmark : UITableViewCellAccessoryNone;    

    return cell;

}



- (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath{

    return indexPath;

}



- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{

    return 40;

}



- (void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    int newRow = [indexPath row];

    int oldRow = [lastIndexPath row];

    if ((newRow == 0 && oldRow == 0) || (newRow != oldRow)){        

        UITableViewCell *newCell = [tableView cellForRowAtIndexPath:indexPath];

        newCell.accessoryType = UITableViewCellAccessoryCheckmark;

        UITableViewCell *oldCell = [tableView cellForRowAtIndexPath: lastIndexPath]; 

        oldCell.accessoryType = UITableViewCellAccessoryNone;

        lastIndexPath = [indexPath retain];    

    }

    [tableView deselectRowAtIndexPath:indexPath animated:YES];

}



- (IBAction)btnClick:sender

{

    UIAlertTableView *alert = [[UIAlertTableView alloc] initWithTitle:@"Select Option"

                                                              message:nil

                                                             delegate:self

                                                    cancelButtonTitle:@"Cancel"

                                                    otherButtonTitles:@"Do", nil];

    alert.tableDelegate = self;

    alert.dataSource = self;

    alert.tableHeight = 120;

    [alert show];

    [alert release];

}



- (void)dealloc {

    [lastIndexPath release];

    [array release];

    [super dealloc];

}



@end

示例图：