ytlvy

//
//  UISegmentedControl+Flat.h
//
//  Created by 魏哲 on 14-2-28.
//

#import <UIKit/UIKit.h>

@interface UISegmentedControl (Flat)

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- (void)keyboardWillShow:(NSNotification *)notification
{
    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:[notification.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]];
    [UIView setAnimationCurve:[notification.userInfo[UIKeyboardAnimationCurveUserInfoKey] integerValue]];
    [UIView setAnimationBeginsFromCurrentState:YES];
    
    // do something
    
    [UIView commitAnimations];

ytlvy

#import <Foundation/Foundation.h>

@interface Invoker : NSObject

+ ( NSValue * ) invoke:( SEL ) selector onTarget:( id ) target, ...;

@end

ytlvy

##Creating a timer with Grand Central Dispatch

At the following is the implementation file of a sample class that shows, how to make a timer with the help of Grand Central Dispatch. The timer fires on a global queue, just change the queue to the main queue or any custom queue and the timer fires on this queue and not on the global queue anymore.

#import <Foundation/Foundation.h>

@interface SampleClass : NSObject
- (void)startTimer;

ytlvy

// No separator insets
self.separatorInset = UIEdgeInsetsZero;
if ([self respondsToSelector:@selector(layoutMargins)]) {
    self.layoutMargins = UIEdgeInsetsZero;
}

ytlvy

#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <signal.h>

void
segv()  // <--- never gets called
{
    fprintf(stderr, "segv\n");
    exit(0);

ytlvy

#define _GNU_SOURCE
#include <stdio.h>
#include <udis86.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <ucontext.h>
#include <execinfo.h>
#include <setjmp.h>

ytlvy

//
// Example of linux signal handlers
//
// Authored by Daniel Shih <[email protected]>
//

#include <signal.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>

ytlvy

#!/bin/bash

###########################################################################
#  Choose your ffmpeg version and your currently-installed iOS SDK version:
#
VERSION="2.0.2"
SDKVERSION="7.0"
ARCHS="armv7 armv7s i386"
#
#

ytlvy

- (NSData *)AES128EncryptWithData:(NSData *)data {

    NSUInteger dataLength = [self length];

    //See the doc: For block ciphers, the output size will always be less than or
    //equal to the input size plus the size of one block.
    //That's why we need to add the size of one block here
    size_t bufferSize = dataLength + kCCBlockSizeAES128;
    void *buffer = malloc(bufferSize);