MyTransparentTableViewController

MyTransparentTableViewController.h

/*
* The MIT License
*
* Copyright (c) 2011 Paul Solt, PaulSolt@gmail.com
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/

#import <UIKit/UIKit.h>


@interface MyTransparentTableViewController : UIViewController <UITableViewDataSource, UITableViewDelegate> {
    CustomView *backgroundView;
    UITableView *tableView;
}

@property (nonatomic, retain) PolaroidView *backgroundView;
@property (nonatomic, retain) UITableView *tableView;

- (void)handleTapGesture:(UITapGestureRecognizer *)tapGesture;
- (void)toggleGUI:(id)sender;

MyTransparentTableViewController.m

/*
* The MIT License
*
* Copyright (c) 2011 Paul Solt, PaulSolt@gmail.com
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#import "MyTransparentTableViewController.h"


@implementation MyTransparentTableViewController

@synthesize backgroundView, tableView;

-(void)loadView {
    self.view = [[UIView alloc] initWithFrame:[UIScreen mainScreen].applicationFrame];
    self.view.autoresizingMask = UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth;

    backgroundView = [[CustomView alloc] initWithFrame:self.view.bounds];
    [self.view addSubview:backgroundView];
    CGRect tableBounds = self.view.bounds;

// Note: Need to lower the content below the UINavigationbar if it's present
    tableBounds.origin.y = self.navigationController.navigationBar.frame.size.height ; 
    tableBounds.size.height -= tableBounds.origin.y;

    self.tableView = [[UITableView alloc] initWithFrame:tableBounds style:UITableViewStyleGrouped];
    


// Make the tableview transparent to see the background
    [self.tableView setBackgroundColor:[UIColor clearColor]];
    tableView.backgroundView = nil; // Must clear on iPad to get it to be transparent
    [self.view addSubview:self.tableView];

    self.tableView.delegate = self;
    self.tableView.dataSource = self;

    UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTapGesture:)];
    tapGesture.numberOfTapsRequired = 1;
    tapGesture.cancelsTouchesInView = NO;  // Must pass through the tap to the UITableView, otherwise we can't touch the rows
    [self.view addGestureRecognizer:tapGesture];
    [tapGesture release];
}

- (void)handleTapGesture:(UITapGestureRecognizer *)tapGesture {
    CGPoint location = [tapGesture locationInView:self.tableView];
    if([tableView indexPathForRowAtPoint:location] && [tableView alpha] != 0) {
        // Do nothing, tap handled by the UITableView delegate method or the custom background uiview
    } else {
        // Inside
        [self toggleGUI:nil];
    }
}

// Hide show the tableview
- (void)toggleGUI:(id)sender {
    if(self.tableView.alpha == 1) {
        [UIView beginAnimations:nil context:nil];
        [UIView setAnimationDuration:.5];
        [self.tableView setAlpha:0.0];
        [UIView commitAnimations];
    } else {
        [UIView beginAnimations:nil context:nil];
        [UIView setAnimationDuration:.5];
        [self.tableView setAlpha:1.0];
        [UIView commitAnimations];
    }
}

// Clean up
- (void)viewDidUnload {
    [tableView setDelegate:nil];
    [tableView setDataSource:nil];
    [tableView release];
    tableView = nil;
    [backgroundView release];
    backgroundView = nil;
    
    [super viewDidUnload];
}


- (void)dealloc {
    [tableView setDelegate:nil];
    [tableView setDataSource:nil];
    [tableView release];
    [backgroundView release];    

    [super dealloc];
}