goldcoast

//return an array of objects according to key, value, or key and value matching
function getObjects(obj, key, val) {
    var objects = [];
    for (var i in obj) {
        if (!obj.hasOwnProperty(i)) continue;
        if (typeof obj[i] == 'object') {
            objects = objects.concat(getObjects(obj[i], key, val));    
        } else 
        //if key matches and value matches or if key matches and value is not passed (eliminating the case where key matches but passed value does not)
        if (i == key && obj[i] == val || i == key && val == '') { //

goldcoast

// answer get from: http://stackoverflow.com/questions/11929099/html5-canvas-drawimage-ratio-bug-ios
// usage example: drawImageIOSFix(context, img, 0, 0, file.width, file.height, 0,0, width, height); 
/**
 * Detecting vertical squash in loaded image.
 * Fixes a bug which squash image vertically while drawing into canvas for some images.
 * This is a bug in iOS6 devices. This function from https://github.com/stomita/ios-imagefile-megapixel
 * 
 */
function detectVerticalSquash(img) {
    var iw = img.naturalWidth, ih = img.naturalHeight;

goldcoast

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    NSDate* end = [NSDate date];
    NSTimeInterval distanceBetweenDates = [self.current timeIntervalSinceDate:end];
    //if time is more than LOCK_DISPLAY_TIME(30s)
    if (fabs(distanceBetweenDates) > LOCK_DISPLAY_TIME)
    {
        UIViewController *root = [UIApplication sharedApplication].keyWindow.rootViewController;
        while (root.presentedViewController)
        {

goldcoast

//http://stackoverflow.com/questions/12445190/dismissmodalviewcontrolleranimated-deprecated
[self presentViewController:xxViewController animated:NO completion:nil];

goldcoast

//  1. init with storyboard
//@"xxViewController" 这个值需要在storyboard中indetity inspector的storyboard ID相同
//这种初始化可以带入storyboard的segue
xxViewController *xxViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"xxViewController"];

// 2. init directly
aaViewController *aaViewController = [[aaViewController alloc] init];

goldcoast

// human.h：

#import <Foundation/Foundation.h>  
  
@interface Human : NSObject  
{  
    int age;  
    NSString *name;  
}  

goldcoast

//use other controller push to navigation controller  
YourViewController *yourViewController = [[YourViewController alloc] init];
yourViewController.title = @"TestTitle";
[self.navigationController pushViewController:yourViewController animated:YES];
[yourViewController release];


// set current navigation title
self.navigationController.navigationBar.topItem.title = @"title 4 testing";