It is normal to encounter a program crash in iOS development, how to catch exception information when a program crashes and notify the developer?
Here's how to implement this in iOS:
1. Add an exception capture listener at the start of the program to handle the callback action when the program crashes
Copy Code code as follows:
Nssetuncaughtexceptionhandler (uncaughtexceptionhandler);
Official Document Description: Sets the
Fatal error is generally not required to capture, but in a complex program, if the occasional lack of memory causes Fatal error is difficult to deal with.
Like what. Fatal error out in the MySQL class when the fetch. It's difficult to pinpoint the real problem at this time.
PHP exception handling can be captured by Set_error_handler. But can only catch notice/warning level of error, for E_error is powerless.
Register_shutdown_function can solve the
script label:
Refresh the page, this time to see the output in the console is like this:
This error is not unexpected, since the set of Error.js for Crossorigin, the Error.js HTTP Response header must also be set to non homologous access. In order to facilitate the setting header, Error.js make a small change, renamed: Error-js.php.
When you refresh the page, you see that the output in the console is normal and all information is captured properly:
OK, technical details ana
In Flash Player 10.1 and above, Adobe has new global error handler uncaughterrorevents. Errors that are generated anywhere in the global area can be captured at the capture and bubbling stages if they are not captured.
The Uncaughterrorevents object that dispatches the event is associated with a Loaderinfo object or Loader object. Use the following properties to access the Uncaughterrorevents instance:
Loaderinfo.uncaughterrorevents: Detects an unha
Using PHP's Curl library can be a simple and effective way to capture web pages. All you have to do is run a script and then analyze the pages you crawl, and then you can get the data you want in a program. Whether you want to take part of the data from a link, or take an XML file and import it into a database, it's a simple way to get the Web content, CURL is a powerful PHP library. This article mainly describes if you use this PHP library.
Enable C
Click to restore factory settings, the system restart, once again into the system, all the data are emptied, how can we know before the end of the factory to restore the set up? How can I mark the recovery of a factory setup event? I hope that after the system restart, according to customer needs, to determine just restore the factory settings, and then add some response and processing, but also different from the normal boot or restart, how to do?
First encountered this problem, I was at a los
Capture the meaning of the session event:
1, record the site's customer login log (login, exit information, etc.)
2, Statistics online number
3, and so on there are a lot of, oh, I think it ... Anyway, it's very important.
Session represents the client's conversation process, and when the customer logs in, an object is passed in to the session to track the client's sessions. In the servlet, the object passing in the session is an object that imple
Problem Description:When analyzing performance problems in a production environment, it is often impossible to do so without a real-time basis. Then the author captures Db.currentop () to the file, and as a timed task, is available for subsequent analysis.Workaround:Step One: Shell script record db.currentop ()1. Create a foldermkdir Currentop2. Create currentop.sh#!/bin/shMongo=/usr/bin/mongodate=$ (Date +%y%m%d%h%m)currentopfile=/home/xucy/currentop/$DATE$MONGO admin-uxucy–ppassw0rd--eval "Rs.
Write OpenCV program, turn on the camera, behold the program error on the book, can open the camera, but can't capture the image
I tried it with my brother's computer, it worked, no problem.
On the internet for a long time, tried a lot of methods, no use, and later in a Baidu know to find a way to success
http://zhidao.baidu.com/link?url=8I5s8NuD3uID9-8oAYb2uFf-thH6j-i940Tgil9XPpYqwB7olGEEsKg3I3Jm4pPdTnVz1q__ Ivkxaz42vvtfpr_3geqhv1c-idzz_y33aum
#inc
Configure Fiddler First download the installation Fiddler, after running the Select menu Tools->fiddler options. With "Decrpt HTTPS Traffic" selected, fiddler can intercept HTTPS requests:
Selecting Allow remote computers to connect allows other machines to send HTTP/HTTPS requests to Fiddler:
Restart fiddler after configuration is complete
.
Install the fiddler certificate on the iphone to get the IP address of the current computer, for example I am here: 10.241.13.110
Then open Safari in th
command curl-xget ' http://10.0.20.25:9200/_template/packetbeat '? Pretty Check the current ES what templates exist in the/etc/init.d/packetbeat Start Start packetbeat Grab Bag ToolWait a moment, you can use curl-xget ' Http://10.0.20.25:9200/test-mysql-2017.09.23/_search?pretty ' View ES whether there is data collected in it. to the http://10.0.20.25:5601 inside, add an index with the name test-mysql-*You can see that the data has been collected, such as:650) this.width=650; "src=" Https://s3.
For video capture in windows, Microsoft provides two SDK libraries: avicap and DirectShow. 1. Introduction to video for Windows
VFW is a software package for Digital Videos released by Microsoft in 1992. It allows applications to digitize and play video clips from traditional analog video sources. A key idea of VFW is that dedicated hardware is not required during playback. To solve the problem of large data volumes in digital videos, data must be co
The build of video capture graph a graph graph that captures audio or video is called a capture graph. Capturing graphs is much more complex than normal file playback graphs, DShow provides a capture graph Builder COM component that makes capturing graph generation simpler. The Capture Graph Builder provides a ICAPTU
Wireshark and TcpDump packet capture Analysis and Comparison
Common packet capture analysis tools include Microsoft's Network Monitor and Message Analyzer, Sniff, WSExplorer, SpyNet, iptools, WinNetCap, WinSock Expert, Wireshark, and linux tcpdump.
Today, we conducted an experimental test to compare and analyze two of them. Other users can use Baidu Google to test yiha ^_^.
1. Wireshark and tcpdump Introduc
Wireshark and TcpDump packet capture analysis and comparison, wiresharktcpdump
Common packet capture analysis tools include Microsoft's Network Monitor and Message Analyzer, Sniff, WSExplorer, SpyNet, iptools, WinNetCap, WinSock Expert, Wireshark, and linux tcpdump.
Today, we conducted an experimental test to compare and analyze two of them. Other users can use Baidu Google to test yiha ^_^.
1. Wireshark an
For general users, it is difficult to crack the neighbor's wireless LAN password. Of course, you can also find specific methods and steps by searching. I am also a beginner. Here are my articles. If you are interested, take a look.The following methods are all tested on the XP platform:.You must note in advance that the prerequisite for cracking isYou must have a NIC that is supported by the airodump software., The support Nic can be checked online (http://www.wildpackets.com/support/downloads/d
Wireshark packet capture analysis-network protocol
Wireshark is currently the most popular packet capture tool. It can run in windows, Linux, and Mac OS X operating systems, and provides a friendly graphical interface. Wireshark also provides a powerful data packet capture function. It can capture the network data pack
Wireshark and tcpdump packet capture analysis experiences
1. Wireshark and tcpdump Introduction
Wireshark is a network protocol detection tool that supports windows and UNIX platforms. I generally only use Wireshark on Windows platforms. If it is Linux, I directly use tcpdump, in my work environment, Linux generally only has a character interface. Generally, Linux uses tcpdump, or uses tcpdump to capture p
Universal timers are used as input captures. We will use the TIM5 Channel 1 (PA0) to do the input capture, capture PA0 high-level pulse width (with the WK_UP key input), through the serial port printing high-level pulse width timeIntroduction to input CaptureThe input capture mode can be used to measure the pulse width or measurement frequency. STM32 timers, in a
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.