Android

A new round of summary is interspersed with a small amount of IOS learning materials. I hope the students who need it can digest them. I will not give a long story. I will introduce some of the following content: Content pioneer: ① It is still

Today, I suddenly found a problem.Org. Apache. HTTPWhen loading data, an error is reported suddenly. After a long time, it turns out to be an SDK problem. For more information about HTTP operations, see Android: HTTP. After testing, an error is

Assets folder Resource Access All files in the assets folder are in the original file format. You need to use assetmanager to read files in the form of byte streams. 1. Call in activity firstGetassets ()To obtain the assetmanager reference. 2.

Dip: Device Independent pixels (device independent pixel ). different devices have different display effects, which are related to the hardware of the device. We recommend that you use this function to support WVGA, hvga, and qvga without pixels.

Different platforms in monocross have different environments: Monotouch for IOS can only be used on OSX. Android mono for Android can be used on Mac and PC .....   Install monotouch for Mac: 1. Install the monoframework http://www.go-mono.

Baseexpandablelistadapter can be used to implement a so-called foldable list, such as the function of grouping friends in QQ. The basic principles of baseexpandablelistadapter and baseadapter are the same, except that two groups are required when

If the View Interface style needs to be unified, you need to use the style in the android view technology.Style is to write the style content to a separate XML file and place it in RES/values/styles. xml: XML version = "1.0" encoding = "UTF-8" ?

Preface You need to set the default options after adapting the data to the spinner. However, it is found that the setselection (INT position) option is selected when it is enabled, however, the displayed option is always the first one by

Gravity is the center of gravity, which indicates the position of the stop. Differences between Android: layout_gravity and Android: gravity From the name, we can see that Android: gravity refers to the element itself, and the text of the

Hello everyone, today we are talking about the design of the android function menu, Program Two menu items are defined, one is "about" and the other is "exit". When you click "about", a new one is created. Toast Prompt: When you click "exit", we

Hello everyone, in this section, we will combine the simple button Event Response to display the application of the toast control. In the previous section, we have learned. the button object is defined in XML. Today we will learn how to implement

I. Intent Functions Intent is frequently used in Android. Whether it is page transfer, data transfer, or external callProgramIntent is required for all system functions. Android has three basic components: Activity, service, and

Px: The pixel of the screen. In: inches MM: mm PT: LB, 1/72 inch DP: an abstract unit based on density. If a screen of DPI is displayed, 1dp = 1px. Dip: equivalent to DP SP: similar to DP, but it also scales according to the user's font

Differences between WAP and net:(1) why are there two access points?In the world, there is usually only one GPRS access method. Why are there cmwap and cmnet in China? (The reason why the access point is configured separately for MMS is that the MMS

1. enable the system GPS Service Locationmanager = (locationmanager) This. getsystemservice (context. location_service );If (locationmanager. isproviderenabled (Android. Location. locationmanager. gps_provider )){Toast. maketext (this, "GPS module

The CV family should easily understand the principles of the prototype, copy and paste it, and check whether the actual situation is modified. In fact, this is the prototype.From the Java perspective, the prototype mode has an obvious feature,

The metadata mode gives me the feeling that an object pool is a cache singleton object.In Java, the most classic example of the enjoy meta mode is the string class, and the most easy to understand is the word document character sharing example,

Recently, I often think about some things developed by the team.CodeInconsistent style is one of the most common problems. It is reasonable to say that you can negotiate and communicate with each other in a uniform style. In fact, it is not because

1. view the current stack 1) function: InProgramJoinCodeTo view the printed current function call relationship in logcat. 2) method:New exception ("Print trace"). printstacktrace (); 2. methodtracing 1) function: this function is used for

In the previous article "Android Learning Series (22)-Comparison of App Main Interface", we analyzed several main interface la S and selected the most popular classic layout.Today, we will use the code to implement this classic layout. 1. Preview a