Android file storage-use SharedPreferences to save user preference setting parameters and read setting parameters
What file storage technologies does Android SDK support?
1. Use SharedPreferences to save key-value data
2. Stream file storage (using the openFileOutput and openFileInput methods, or FileInputStream and FileOutputStream)
3. XML semi-structured storage
4. Save arrays and objects in JSON format
compatible with different browsers //With the modified RESP back to the platformChain.dofilter (Request, RESP); }@Override Public void Destroy() { }}Settings do not cache: (This may not work because most browsers have their own cache)The reason for setting these 3 is that different browsers have different names for their parameters! In order to be compatible with most browsers, we have set up 3 of these.resp.setHeader("expires","-1");re
The problem of setting border in table, and setting border in tableToday, when I modified the table style, I wanted to add a border-bottom to tr. The color was relatively light at the beginning. I thought it was too long for my computer to be dazzled, after the result is changed to a deeper color, border-bottom does not come out. I suddenly remembered that I set the inline style for the table in the html co
Setting up a Discuz Forum quickly in Windows (you can also refer to setting up other php forums ),
Let's talk a few nonsense first.
In the. Net field, excellent forums include Community Server, yetanotherforums, and CVBBS.
In the php field, excellent forums include phpwind, phpbb, Discuz, vBulletin, etc.
I have tried several forums in the asp/. net field, but none of them are very good. For example, the Co
Setting up RabbitMQ server in Linux and setting up linuxrabbitmqSystem Environment
Operating System: CentOS6.9
Erlang: OTP 19.3
Rabbitmq: rabbitmq-server 3.6.12 Installation Steps to install erlang
1. Install the pre-Environment
Install the following components using yum and run the following command:
[Root @ rabbitmqserver erlang] # yum-y install make gcc-c ++ kernel-devel m4 ncurses-devel openssl-devel
2
Jquery chosen dynamic setting value select Ajax dynamic loading data setting chosen and getting their selected value, jquerychosen
In the edit dialog box, select option must be included. It mainly aims to dynamically load the option and select the option. However, because the chosen () method in jquery is used in the project, the effect cannot be achieved. The source code is as follows:
Java code
Measurement Rapid development platform, the grid part can also set the height of the row, set the line height of the code as follows:grid. Gridview.rowheight=45grid. RefreshData ()' Traverse grid field to center all contentFor each cl in grid. Gridview.columnsCL. AppearanceCell.TextOptions.HAlignment = 2NextDim stylecondition1= Grid. Addcolumnstyle ("B", 1, "Red risk", 0,false)Stylecondition1.appearance.backcolor=color.fromargb ( -65536)Stylecondition1.appearance.forecolor=color.fromargb ( -1)It
Websites often use drop-down menus, slides, and floating advertisements.But it is often found that. Slide blocks drop-down menus or floating advertisementsShop.The solution is as follows:First, you can place the DIV where the slide is located at the bottom layer. Add CSS as followsStyle = "Z-index:-100; position: relative ;"Second, you can place the blocked DIV/ul/Li at the highest level. Add CSS as followsStyle = "Z-index: 9999; position: relative ;"Sometimes flash slides do not work. Add this
server memory is very small, for example, less than 4G, then you can not change this value, because after all, considering the memory is not enough to borrow swap case. Compared to many servers, it is recommended to set below the value of 25, if more than 8G of memory, and the current memory usage is still remaining, it is recommended to directly change the swappiness to 0, so as to maximize the use of physical memory, reduce the load on the hard disk, and speed up. Also avoid errors such as "m
Recently the company has a customer reported a problem, that is, after running for a while in the Apache log/var/log/httpd/error_log file has an error message
[Fri 29 15:45:37 2016] [ERROR] Server reached maxclients setting, consider raising the maxclients setting
Check, this is due to the number of concurrent links caused by too many, and then check the Apache documentation, found that you can modify th
This paper describes the Laravel routing and sub-route setting methods. Share to everyone for your reference, as follows:
Normal routing settings
1. Routing (routes.php) code:
Route::get (' min ', ' mincontroller@index ');
Min: For the route name, which is entered in the URL, such as 127.0.0.1/min here min is the corresponding minMincontroller as file name (class name)@index as Method name
2. Controller
Namespace App\http\controllers;use app\http\con
1. Set the virtual machine to use bridge mode2. Open the configuration file with Vi/etc/sysconfig/network-scripts/ifcfg-enp0s3 (where Enp0s3 is the name of your Linux network adapter, use IP addr in the shell) command to view its own name and change it to its own, immediately after the number of the argument is, not lo that)Modify the following parametersChange bootproute= "DHCP" to bootproute= "static"Change onboot= "No" to onboot= "yes"Then add the following parameters (location optional)Ipadd
How to set up the millet router
First, if you have a wireless router, then put the power on, then plug in the network cable, into the line inserted in the WAN (usually the blue port), and then connect to the computer network cable to plug any LAN, do the work, then you will see the router behind the address and account number password, After the link in the browser to enter the address in the router to see, is generally 192.168.1.1 (of course, if your home is using the telephone line on t
1.EditText Input Restriction rulesSetting properties in Xml:edittextAndroid:digits= "abcde123*"Abcde123* is your restraining rule.Example: android:digits= "0123456789ABC"The rule is to enter only the English alphabet (lowercase) ABC and the number2.EditTex input text is in password form(1) Set in XMLAndroid:password= "true"//with "." Form display text(2) Set in codeTo implement a hidden password and display password by setting the Edittex Settransform
Defaultstatementtimeout This setting value must be an integer, which can be reset by the statement property of any map file, if not specified, as the time the JDBC connection times out. The query will have no time-out limit unless the statement property value is set in the mapping file. The set value waits in seconds for the connection to fail classinfocacheenabled with the setting enabled, IBATIS will main
setting the touchpad, and there are more things that can be done right hand.
Bettertouchtool (BTT for short) is such a software that maximizes the potential of the touchpad. In terms of normal use (non-game), The g700s function is used to kill the g700s. Even the g600 with more than 20 function keys is far from enough. (The mouse button is too difficult to remember ). Chiphell does not seem to be able to add attachments. Please search and download th
The computer configured by the company is Win7, the account used is not an administrator account, I set the environment variable in the computer---Properties is invalid.The environment variable was later successfully set in the DOS window.1, set [environment variable name]=[all environment variable value]:set path=%maven_home%\bin; C:\Program Files\java\jdk1.7.0_71\bin;This method is only valid after the current DOS window is set, and reopening after exiting is not valid, you can use the command
A field in the class should be set as a value when the object is created, and then it will not be changed.Remove all set-value functions of this field.
Motivation: If you provide a value setting function for a field, it implies that the field value can be changed. If you do not want this field to be changed after the object is created, do not provide a value-setting function for it. In this way, your inte
Php does not enable the save_mode safe mode setting method, save_mode setting methodSecurity Configuration 1(1) Enable the php security modeThe security mode of php is a very important embedded security mechanism that can control some php functions, such as system (),At the same time, many file operation functions are subject to permission control, and files of some key files are not allowed, such as/etc/pa
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