different launchers

This article briefly introduces the concepts and differences between launchers and choosers, briefly describes the functions of each launcher and chooser, and analyzes their behavior. Launchers and choosers are designed to uniformly call the services (programs) provided by the system, so that each third-party application can call the same system functions to maintain interface consistency.

Difference: launcher does not return a callProgramAny information, such as sending mail tasks; chooser returns certain information to the calling program, such as album selection. Launchers starters: Emailcomposetask: Start the email sending application. Marketplacedetailtask:Start the marketplace client application and display the details of the specified application. Marketplacehubtask: Start the marketplace client application. Marketplace

described by the filter. This attribute has meaning for both activities and broadcastreceivers: It provides information about how able an activity is torespond to an intent that matches the filter, relative to otheractivities that cocould also respond to the intent. when an intentcocould be handled by multiple activities with different priorities, AndroidWill consider only those with higher priority values aspotential targets for the intent. It

First put on the effect map, you can see The following methods are implemented First, the use of the class Cakeyframeanimation//Core Animation-Key frame animation Caemitterlayer//particle emitter (is actually a layer, whose parent

Log4j for me is always a Shing, basically is from other projects, or online to find a section down according to gourd painting scoop, anyway, are not insignificant things, never carefully studied. Recently done a small project, the customer to look at the log than the business is important, have to improve their own, carefully studied a bit, finally from the muddle out of the. This article does not intend to introduce the log4j in detail, so, such as log level (grade), Appender (output destinati

Different template files are called for different wordpress categoriesWhen creating wordpress multi-column templates, different templates are called for different categories. For example, if my blog has Classification PHP and ASP technologies, different classification templa

The browsers of different IE versions have different interpretations of the WEB standard pages we have created. Specifically, they have different interpretations of CSS. To be compatible with these, we can use conditional annotations for their respective definitions, to achieve compatibility. For example: This differentiates the implementatio

Asp.net mvc jqgrid queries different tables on the same page. jqgrid displays the headers and data of different tables on different pages. mvcjqgrid Based on my previous article Solution: load all the data to the table at one time based on the passed table name and time parameter. The header must be determined one by one, and the sequence of the subject must be

Different browsers send different headers for refreshing behaviors, but different refresh behaviors. 3. Local browser -- Proxy Server (squid) -- remote server (RS) In this data stream, let's think about how it works. The local Browser needs to obtain the data on a url and then send the HTTP request to squid, squid converts the HTTP request into its own request an

In the future of the world will be data, a database equivalent to a business, in this huge database has a lot of data, the different positions of people can see the data is certainly not the same so, the data need permissions, need permission control. The set deep Data system provides the enterprise user with the perfect system resources and the privilege management function. It provides flexible and powerful control function for the complex and chang

In today's Web browser handling events is a little difficult part of different browsers handling events in different ways. Therefore, to overcome these cross-browser problems, one can take advantage of the jquery event-handling APIs.jquery is a small JavaScript library that provides a broad range of APIs to handle different browser events and effects and much mor

Statement This SQL statement can query two different fields of different structures and can tell which records belong to which table has two tables The Table1 structure is as follows ID Title Content The table2 structure is as follows ID content Bigclass Smallclass sql= "SELECT ID, title, content, ' as Bigclass, ' as Smallclass, ' Tbl1 ' as tbl from table1 where title like '% ' keyword % ' or conten

asp.net| text Box | response | page In ASP.net, if you have more than one text box on the same page, pressing the "enter" button in each text box will respond by default to the Click event of the first button and how you can press ENTER without causing an unexpected response or how to hit the ENTER key in different places to get a different response. This problem has plagued me for a long time, and so far h

As a big winner of container cluster Management technology competition, Kubernetes has been closely connected with micro-services, and enterprises that adopt kubernetes often start to explore the micro-service architecture. However, the problems faced by micro-service practice in different stages of different enterprises vary widely, and they are destined to produce bifurcation on the technical route. How t

Many times in the development of Destoon, the need for different member groups (such as ordinary members and VIP members) its display should also be different. This article is for the Destoon implementation of different members of the company name display different colors of the implementation method. Specifically as f

This article describes the Android programming implementation of the control of different state text display different colors of the method. Share to everyone for your reference, specific as follows: Mode one : The first control to select Style is a custom style, and the corresponding XML file is as follows: The Textcolor_yellow_selector in TextColor is as follows

Tags: User login Level Simple association menu two menu database database table displayUsers who implement different permissions see different menus (menu level Two) and level two menu display content based on a menuA. Menu tableID (primary key),Menu_name (menu name),PARENT_MENU_ID (Parent menu ID),Level (menu levels: 0, Level menu, 1, Level two menu ...) can be infinite level)Two. Role Roles tableID (prima

Spring boot enables you to use different configuration variables in different environments (such as development, test, and production environments) by configuring multiple profiles in the APPLICATION.YML configuration file. The configuration is as follows (content in APPLICATION.YML): Server: port:8082 # The default profile is dev, and other environments use diff