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On this lessons, you’ll use this Google android Studio room Format Publisher to create a page layout containing a text pack as well as a press button. Over the following tutorial, your family will enjoy your practical application respond to your press button tap by means of transmitting this article with the word container to another action.
The person program with an Operating system app was made having a bureaucracy of cool layouts ( ViewGroup physical objects) as well as icons ( Perspective objects). Styles tend to be hidden bins that will control just how its child views are placed on the watch’s screen. Icons will be UI parts like switches plus word containers.
Number Only two. Type of precisely how ViewGroup objects type branches inside the structure and also comprise Perspective objects
Android operating system provides an XML words pertaining to ViewGroup and think about sessions, consequently positioned on Urinary incontinence is defined in XML data files. On the other hand, in place of teaching you to jot down many XML, that session helps guide you to develop a structure using Google android Studio’s Format Program, rendering it all to easy to construct a structure through drag-and-dropping vistas.
Notice: This kind of lesson wants you’re using Google android Business A couple of.Three or more and up and you have put into practice the first sort lessons to create your own Android os undertaking.
Within Google android Studio’s Challenge windows, start request – res – structure – activity_main.xml.
To produce additional space for that Structure Program, obscure the job windowpane by simply picking out See – Instrument Glass windows – Project (and also just click Challenge within the quit side connected with Android operating system Studio).
When your publisher reveals the actual XML resource, go through the Style and design case in the bottom from the window.
Click on Indicate System consequently just the strategy structure are seen.
Be certain Exhibit Restrictions is actually about. The particular tooltip in the toolbar need to study Disguise Limits (as they are now exhibiting).
Ensure Autoconnect can be out of. The actual tooltip in the toolbar need to go through Start Autoconnect (which is at this point out of).
Click Go into default Rates in the toolbar and select Sixteen (you may still change this margin for each and every view later on).
Click Machine within Publisher in the toolbar decide on Pixel XL.
The actual Part Hardwood eye-port for the bottom-left part exhibits the actual layout’s pecking order connected with views. However, the cause check out can be a ConstraintLayout. that contain an individual TextView subject.
ConstraintLayout is a format that defines the task for each and every look at according to restrictions to help buddy ideas and also the mom or dad layout. By doing this, you can make the two easy and intricate styles with a chiseled look at hieararchy. That may be, that helps prevent the advantages of nested templates (some sort of page layout inside a layout, since found inside physique 2), which often can boost the moment needed to draw a User interface.
Notice a seems 16dp in the top of the parent or guardian design.
Notice a seems 16dp from your remaining of your father or mother layout.
Look at N seems to be 16dp to the proper involving go to a.
Watch W is arranged to the peak regarding view A.
Initially, you might want to get rid of precisely what is by now inside the design. Thus click on TextView while in the Part Sapling windows, after which touch Eliminate.
Through the Colour pallette home window around the still left, click on Written text inside the still left lite, then drag Plain Text message into the pattern program plus fall that on top of the layout. It becomes an EditText golf widget that will take plain text feedback.
Hit the check out from the style writer. Now you can start to see the resizing manages on each area (sqs), along with the confinement anchors on every section (bags).
For much better command, you may want to focus within the program in order to 75 or older using the control buttons present in the toolbar.
Click-and-hold a anchor topside facet, after which drag up until finally the idea snaps to the top in the format and also generate. Which is a constraintit stipulates the scene needs to be 16dp from the the surface of the structure (as you placed the normal prices for you to 16dp).
In the same manner, create a restriction in the left section on the see left part from the design and style.
On the Colour pallette window, simply click Gadgets inside the kept window pane, and then drag Control key in to the style author and shed it close to the ideal area.
Build a limitation on the eventually left facet in the button off to the right facet on the text message pack.
To help restrict the views inside of a flat conjunction, you have to generate a limit relating to the text message baselines. So go through the button, after which mouse click Normal Restriction, which seems inside layout program below the selected view. Your standard point would seem inside of the control key. Click-and-hold with this anchor and after that pull the item towards standard core seems from the wording common box.
Note: Also you can make a outside stance with all the bottom or top corners, nevertheless the switch includes support around its impression, hence the aesthetic alignment is usually incorrect for those who arrange these kinds of opinions like this.
Click Indicate Layout in the toolbar to survey the particular User interface. Notice that the words feedback is pre-filled with “Name” as well as key is branded “Button.” Consequently you will change these types of strings.
This can be a stringed sources data file it is possible to identify your entire UI guitar strings. The process means that you can handle just about all User interface post in a single area, that makes it simpler to find, upgrade, and localize (when compared to hard-coding post inside your design as well as software program code).
Simply click Amenable program near the top of the actual writer windows. This kind of unwraps the actual Translations Publisher. which supplies an effective program regarding incorporating as well as enhancing a person’s fall behind guitar strings, and enables maintain your turned guitar strings arranged.
Click Bring Critical for create a new stringed as being the “hint text” with the word common box.
Get into “edit_message” for that major identity.
Enter “Enter some sort of message” with the worth.
Simply click OK.
Create another major named “button_send” which has a valuation on “Send.Inches
You can now established these kind of guitar strings for every look at. So get back to the design file by means of visiting activity_main.xml within the hook club, and add the strings as follows:
Hit the text message pack from the page layout and also, when the Properties window seriously isn’t previously obvious for the suitable, simply click Qualities within the suitable sidebar.
Uncover a touch property or home then press Decide on a Learning resource off to the right of the text message pack. While in the dialogue seems, double-click with edit_message from the listing.
Nevertheless looking at the call pack attributes, as well remove the significance to the textual content home (currently placed for you to “Name”).

Right now click the switch in the design and style, track down the text residence, press Pick a Reference. and after that pick out button_send.
To create a page layout that may be responsive to distinct tv screen sizes, you may now increase the risk for text message common box reach in order to fill most outstanding horizontal living space (following comprising the actual switch in addition to prices).
Produce a limitation in the correct facet in the button right area of the mother or father layout. This kind of right now defines the entire wider the fact that not one but two landscapes offer (which you’ll want to today fill up together with the textual content box).
Add a yalantis restriction with the correct aspect with the word pack left aspect from the option. It may well appear to be that is previously presently there, however they are truly including any bidirectional limit between the two views. And so either opinions are constrained to one another. Video clips a series (while indicated by your cycle betwen a vistas), and it lets some additional page layout solutions.
Available this Properties eye-port for that textual content common box and click on the fullness gauge till established to fit Restrictions. seeing that indicated by callout One physique Eight. “Match constraints” implies that the actual width is currently determined by this side restrictions plus profits. Hence, the writing box elongates for you to complete your side room.
On the other hand, both views tend to be split up by simply 32dp instead of 16dp, for the reason that both equally opinions have got rates. Consequently when still looking at the written text common box components, get a new suitable mark up to help Zero, since indicated by callout 2 within number 8-10.
Whether or not it seems your current design wouldn’t prove not surprisingly, just click listed below to see just what exactly the the XML could consider looking for instance and also examine the idea about the the thing is while in the Wording hook.
To read more pertaining to tirechains and all sorts of other activities that can be done having ConstraintLayout. understand Build a Reactive UI with ConstraintLayout.

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【程序员的不同境遇:少抱怨 多解决问题】



同样在计算自己的开发时间的时候,A说三天做完就一定要三天做完,做不完的就会周六周日来加班,你说一周做完的工作能拖一个月,而且拖欠那么多工作还永远觉得无所谓,永远准时 6 点走人,质问你的时候,你还振振有词说没人付你加班费。



同样是 QA 反馈问题,A会第一时间走到 QA 电脑前看具体表现,自己来找问题。你只会说“我不知道”,“我没办法”,“怎么可能”,“你看错了”,“你叫别人做吧”。


项目结项的时候,项目经理专门给A写了一封上千字的手写推荐信,还推荐A去 TX,你觉得这个机遇对A很重要,你没有得到项目经理的推荐,很不公平。难道你真的觉得是项目经理心血来潮随机抽几个人来写的么?你真的没有意识到,如果把你推荐到那些大团队去,推荐人的脸会被你丢光么?
















二,细心 :









(1)不要常用缺乏自信的词句 。


















(3)针对客户提出的“不诚信”问题, 拿出改善的方法。



(6)计算一下产品或服务的诚信代 价,那就是品牌成本。







(5)对“怕事”的人或组织要挑明了说 。


调试可以帮助识别和解决应用程序缺陷,在本文中,作者将使用大家常用的的开发工具Eclipse来调试Java应用程序。但这里介绍的调试方法基本都是通用的,也适用于NetBeans IDE,我们会把重点放在运行时上面。

在开始之前,推荐大家去看看Eclipse shortcuts这篇文章,它将会给你带来很多方便。在本文中使用的是Eclipse Juno版(Eclipse 4.2),在开始前给大家提3点建议!

  1. 不要使用System.out.println作为调试工具
  2. 把所有涉及到的组件日志级别激活并使用
  3. 使用日志分析器来读取日志








按Ctrl+Shift+D或者Ctrl+Shift+I来显示选定变量或者表达式的值。我们也可以给一个变量或表达式添加永久观察点,当程序在调试时,这些观察点就会在表达式视图(Expression view)中显示出来。


在调试过程中,我们可以修改变量值。先选好一个变量然后进入变量视图(Variables view),根据变量类型在其对应的Value列里输入值即可。


在运行/调试设置中,编辑配置对话框中有“Main”这个选项卡,我们可以勾选“Stop in main”这个复选框。如果选中,那么在调试一个基于main方法的Java程序时,程序会在main方法第一行位置便停止执行。



8.Drop to Frame














yaf开发环境建议 lamp,目前yaf的最新版本为2.1.18(建议使用),php version 5.3+

apache 必须开启rewrite模块


display_errors = on
log_errors = on
html_errors = on
error_reporting= E_ERROR | E_WARNING | E_PARSE | E_NOTICE


+ public  //网站根目录
   - index.php //入口文件
   - .htaccess //重写规则    
+ conf
  |- application.ini //配置文件   
  + controllers
     - Index.php //默认控制器
  + views    
     |+ index   //控制器
        - index.phtml //默认视图
  + modules //其他模块
  - library    //组件目录
  - models  //model目录
  - plugins //插件目录



补充 :



类命名,应注意类与父目录之间的关系, 通常“目录名_类名”,  目录首字母和类首字母大写, 例 “Base_Func”, 类文件存储位置为Base目录下的Func.php




为全局目录. 所以我们不需要去注册本地类。










application.library = 本地类空间的路径(绝对路径)







Yaf_Application,  Yaf_Loader,  Yaf_Dispatcher, Yaf_Registry, Yaf_Session,这些类都是单例模式类。反之,其他类不是

你可以通过它们的getInstance() 来获取它们的单例,也可以通过Yaf_dispatcher::getXXX方法来获取实例

YAF 链式操作


Yaf_Session::getInstance()->set('name', "alex")->set('sex',"男");

YAF 默认url访问规则




application.dispatcher.defaultRouter =  默认的路由形式

Yaf默认的模块为Index, 默认的Controller为Index,默认的Action为Idex,这些你也可以通过框架进行配置更改

application.dispatcher.defaultController = 默认的控制器
application.dispatcher.defaultModule = 默认的模块
application.dispatcher.defaultAction = 默认的动作

YAF 路由

Yaf支持5种默认路由模式.  注:以下规则示例中省略了入口文件

static 路由(不支持参数映射), 访问规则


supervar 路由(不支持参数映射),访问规则


simple 路由(不支持参数映射),访问规则

http://domain-name/?m=module-name&c=controller-name&a=action-name http://domain-name/?m=module-name&c=controller-name&a=action-name&param1=value1……

rewrite 路由(支持参数映射),支持REST, 访问规则


regex 路由(支持参数映射),支持REST, 访问规则


yaf 支持多种路由同时共存,是优点也是缺点. 假设情景路由只支持rewrite路由模式,而不支持regex路由,但这两种路由都存在,我们如何


class UserPlugin extends Yaf_Plugin_Abstract {

    public function routerShutdown(Yaf_Request_Abstract $request, Yaf_Response_Abstract $response) {
        $router = Yaf_Dispatcher::getInstance()->getRouter()->getCurrentRoute();
             if ($router == 'regex')  {
                   throw new Exception("not found page");


Yaf 插件

yaf 插件主要用来增强Yaf框架功能,网上有人利用yaf的6个hook实现了YAF框架调试日志功能, 也有人利用插件实现了yaf的layout,


如何来写一个插件呢,我们只需写一个类去实现Yaf_Plugin_Abstract, 并将插件注册一下.

class SamplePlugin extends Yaf_Plugin_Abstract {

    public function routerStartup(Yaf_Request_Abstract $request, Yaf_Response_Abstract $response) {

    public function routerShutdown(Yaf_Request_Abstract $request, Yaf_Response_Abstract $response) {

    public function dispatchLoopStartup(Yaf_Request_Abstract $request, Yaf_Response_Abstract $response) {

    public function preDispatch(Yaf_Request_Abstract $request, Yaf_Response_Abstract $response) {

    public function postDispatch(Yaf_Request_Abstract $request, Yaf_Response_Abstract $response) {

    public function dispatchLoopShutdown(Yaf_Request_Abstract $request, Yaf_Response_Abstract $response) {


   public function _initPlugin(Yaf_Dispatcher $dispatcher) {
        $sample_plugin = new SamplePlugin();


Yaf 模块

模块的使用再日常开发的情景非常多.比如CMS 前台后后台,可以定义为Index和Admin,这样它们可以共用配置文件和library.而且url也更加友好。

开发过程中也能分模块开发.  我们可以把一个搜索栏目,拆为新闻模块,供应模块,求购模块,产品模块,公司模块。或者分得更细些


application.modules = admin,index