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先从 www.ffmpeg.org下载ffmpeg
然后：
/Users/mac/Desktop/SnowLeopard_Lion_Mountain_Lion_Mavericks_12.12.2015/ffmpeg -i d0019utlj48.mp4 -acodec libvorbis d0019utlj48.ogg
注：ffmpeg在电脑上的位置 -i 源视频的名字 -acodec libvorbis 新视频的名字
How Do I Declare A Block in Objective-C?
As a local variable:
1.
returnType (^blockName)(parameterTypes) = ^returnType(parameters) {...};
2.
@property (nonatomic, copy) returnType (^blockName)(parameterTypes);
3.
- (void)someMethodThatTakesABlock:(returnType (^)(parameterTypes))blockName;
4.
[so ...
禁止WebView长按事件
- 博客分类：
- iPhone开发
在webViewDidFinishLoad调用：
- (void)webViewDidFinishLoad:(UIWebView *)webView{
NSArray *subViewArray = webView.subviews;
for (UIView *view in subViewArray) {
NSArray* array = view.subviews;
for (UIView *view in array) {
[self removeGesture:view];
}
...
.h
//
// PublicTableView.h
// JointCrm
//
// Created by Mac on 15/10/27.
// Copyright © 2015年 Mac. All rights reserved.
//
#import <UIKit/UIKit.h>
typedef void(^TableBlock)(UITableView *tableView,NSIndexPath *indexPath);
@interface PublicTableView : UITableView
/**
* 定义一个公共的TableView, ...
好久没有写ios了，这篇文章主要是记录一些看到的不错的文章：
1.解决请求并发的问题。
http://www.cocoachina.com/ios/20151009/13579.html
2.layer相关的东西
http://www.cocoachina.com/ios/20141022/10005.html
3.自动布局
Auto Layout 使用心得（一）—— 初体验
https://lvwenhan.com/ios/430.html
4.iOS开发之runtime的运用-获取当前网络状态
http://www.360doc.com/content/14/0403/14/1625 ...
使用方法： 直接把XHRecrodView添加到controller可实现像微信那样的语音通话
// 添加录音view
XHRecrodView* recrodView = [[XHRecrodView alloc] initWithFrame:CGRectMake(0, CGRectGetMaxY(_textview.frame) + 20, SCREEN_WIDTH, 100)];
[self.view addSubview:recrodView];
.h
#import <Foundation/Foundation.h>
typedef void(^SuccessBlock)(NSString *dataString);
typedef void(^FialdBlock)(NSString *dataString);
@interface HttpRequest : NSObject
+(void)requestWtihParams:(NSDictionary *)params
withSuccessBlock:(SuccessBlock)successBlock
wihtFiladB ...
// 压缩图片，如果图片大于100kb，就循环压缩
+ (NSData *)compressionWithImage:(UIImage *)image{
// 先按宽度压缩
UIImage *newImage = [image resizeImageGreaterThan:480];
NSData *data;
float quality = 1.0f;
if (UIImageJPEGRepresentation(newImage, quality)) {
data = UIImageJPEGRepresentation ...
快速的定义一个weakSelf 当然是用于block里面啦
#define WS(weakSelf) __weak __typeof(&*self)weakSelf = self;
解决ios7 UINavigationItem 位置偏移问题
#import <UIKit/UIKit.h>
@interface UINavigationItem (Spacing)
-(void)mySetLeftBarButtonItem:(UIBarButtonItem*)barButton;
-(void)mySetRigthBarButtonItem:(UIBarButtonItem*)barButton;
@end
#import "UINavigationItem+Spacing.h"
#import <objc/runtime ...
把图片压缩到指定大小(kb)
- 博客分类：
- iPhone开发
UIImage *image=[UIImage imageNamed:@"xxoo.jpeg"];
NSData *imageData=UIImageJPEGRepresentation(image, 1.f);
CGFloat size=40.f;// kb
CGFloat scale=size/(imageData.length/1024);
NSData *newData=UIImageJPEGRepresentation(image, scale);
获取当前时间属于该月的第几周
- 博客分类：
- iPhone开发
+(NSInteger) indexWeekOfDateInMonth:(NSDate*)date_
{
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents* components = [calendar components:NSYearCalendarUnit| NSMonthCalendarUnit | NSDayCalendarUnit | NSWeekCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NS ...
iOS开发的一些奇巧淫技
- 博客分类：
- iPhone开发
iOS开发的一些奇巧淫技
http://www.cocoachina.com/ios/20141229/10783.html
TableView不显示没内容的Cell怎么办?
类似这种,我不想让下面那些空的显示.
01.png
很简单.
self.tableView.tableFooterView = [[UIView alloc] init];
试过的都说好.
加完这句之后就变成了这样.
02.png
自定义了leftBarbuttonItem左滑返回手势失效了怎么办?
self.navigationItem.leftBarButtonItem = [[U ...
iOS中使用block进行网络请求回调
- 博客分类：
- iPhone开发
转自: http://www.tuicool.com/articles/JFRfmq
//
// HttpRequest.h
// UseBlockCallBack
//
// Created by Michael on 2/13/14.
// Copyright (c) 2014 EIMS. All rights reserved.
//
#import <Foundation/Foundation.h>
typedef void (^FinishBlock)(NSString *dataString);
@interface HttpRequest : NSO ...