In Android development, when it comes to screen video problems, the conversion between PX, DP, SP is an important part, so Yang Brother a tool class for everyone.Package com.zw.express.tool;Import Android.content.Context;Import Android.util.DisplayMetrics;/*** YDC* @author Administrator**/public class Densityutils {/*** Switch from Dip unit to PX (pixel) According to the resolution of the phone*/public static int dp2px (context context, float Dpvalue)
AutoscreenadaptationAndroid screen adaptation items directly with the DP and SP can be added without modification directly into a code to achieve the adaptationNot sure if there will be compatibility issues and performance issues that require time testingAt present, the different resolutions of the simulator are tested and the basic effect of different DPI is not much worse.Rotating the screen layout scales the view by the size of the horizontal versi
An in-depth understanding of SP, LR, and PC in-depth understanding of the three registers of arm is of great benefit to both programming and porting of the operating system.
1. Stack pointer R13 (SP): Each anomaly pattern has its own independent R13, which usually points to the stack dedicated to the exception mode, i.e. five exception modes, non-exception modes (user mode and system mode), each with separa
1. There are two basic operations on the stack: Inbound and Outbound
2. The elements at the top of the stack always last in the stack, first out of the stack, and then in and out.
3. The 8086cpu provides the inbound and outbound commands. The two most basic commands are push (inbound) and POP (outbound)
Push ax refers to sending the contents of the ax register to the stack, and pop ax refers to pulling data from the top of the stack and sending it to the ax register.
The inbound and outbound ope
From: http://sifutian.iteye.com/blog/680935
Display Unit: pixel, dip, and SP
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.
Px: pixels (pixels). Different devices have the same display effect. Generally, we use hvga to represent 320x480 pixels, which is
Android in Dip, DP, PX, SP and screen density 1. Dip:device independent pixels (device independent pixels). Different devices have different display effects, this is related to the device hardware, generally we support WVGA, HVGA and QVGA recommended use this, do not rely on pixels.It is important to note that dip is related to screen density and that the screen density is related to specific hardware and that the hardware settings are incorrect and m
First refbase in the C + + part of Android is as a base class for all classes, which functions like an object in Java. A private member exists in this class:weakref_impl* const mrefs;(Weakref_impl is a subclass of Weakref_type)This mrefs is a "shadow object" and is the key to managing the reference count of an objectRefbase is constructed in Mrefs (new Weakref_impl (This)), new is a Weakref_impl object, Weakref_impl's constructor parameter is Refbase's pointer and initializes the WEAKREF_IMPLMst
Dip:device independent pixels (device independent pixels). Different devices have different display effects, this is related to the device hardware, generally we support WVGA, HVGA and QVGA recommend this, do not rely on pixels.Px:pixels (pixels). Different devices show the same effect, generally we hvga represent 320x480 pixels, this use more.Pt:point, is a standard length unit, 1pt=1/72 inches, for the printing industry, very simple to use;mainly used for font display of best for textsize.As a
This article links http://blog.csdn.net/xiaodongrush/article/details/295604311. What do designers and developers agree on to develop an android APP?First, choose a mainstream model.Then, the designer based on the screen size of the model design, give the PX unit labeling.Finally, according to the model, we can calculate the conversion method of PX and DP, and set the dimension of DP unit according to the dimensions of PX unit.Note: 1DP=1DIP=1SP, for the general long-width DP or dip can be,
I. Overview
We often set the container length during page layout, but we are annoyed by which unit of length should be used.
The following types of description areas are supported in Android.
Px (pixels)-pixels: different devices have the same display effect. Generally, hvga represents 320x480 pixels, which is usually used.
Dip (device independent pixels) -- device independent pixel: This is related to the device hardware. Generally, we recommend that you use this parameter to support wcga, hvga
When developing applications using the ecmascript object model, we do not consciously want to know what methods a certain SP object provides? Here we will look at how to do it.1. Add a visual webpart (named wplkecmascript) and a Javascript file (named ecmaoplistitems. JS) to the SharePoint project we created earlier)The code for ecmaoplistitems. JS is as follows. This code is used in the previous introduction to extract website attributes.// Retrive w
1. OverviewIn the past, programmers often designed computer user interfaces in pixels. For example, the image size is 80x32 pixels. The problem with this processing is that if you run the program on a new display with a dot (dpi) higher per inch, the user interface will look small. In some cases, the user interface may be small to difficult to see the content. Therefore, we can solve this problem by developing a program using a measurement unit unrelated to the resolution. Android Application De
When SharePoint client JS is developing, there are two ways to wait for a SharePoint object to load and then call its own method (MyFunction):
executeordelayuntilscriptloaded (myFunction, "sp.js");
Sp. Sod. Executefunc (' sp.js ', ' sp. ClientContext ', myFunction);
With which one?Jony's answer is: If the code is embedded in the publishing Page, with the 2nd, otherwise, you can use the 1th one.Ex
1. Example of creating an SP through WP, such as:int main () {A * PA = new A ();Wpsp}2. Implementation of the promote function:TemplateSpRetrun sp}3. TemplateSP: M_ptr (P refs->attemptincstrong (This)) p:0) {}4. BOOL Refbase::weakref_type::attemptincstrong (const void* ID) {Incweak (ID); Adds a reference count, at which point the weak reference count is 2.weakref_impl* Const IMPL = static_castint32_t Curco
Add SP value-added services in PHP. now, you need to add SP value-added services to a website, including user registration, sending verification text message codes, completing registration, and sending member identity verification long codes, I have not yet received the mobile port and protocol yet. I want to prepare the protocol in advance. please advise me how to prepare the protocol. I also heard that PH
An in-depth understanding of the three registers of ARM is of great benefit to programming and porting the operating system.
1. Stack pointer R13 (SP): Each exception mode has its own R13, which usually points to the stack dedicated to the exception mode, that is to say, the five exception modes, non-exception modes (user mode and system mode) all have their own independent stacks and are indexed using different stack pointers. In this way, when the
the device hardware, generally we support WVGA, HVGA and QVGA recommend this, do not rely on pixels.Px:pixels (pixels). Different devices show the same effect, generally we hvga represent 320x480 pixels, this use more.Pt:point, is a standard length unit, 1pt=1/72 inches, for the printing industry, very simple to use;sp:scaled pixels (enlarge pixels). Mainly used for font display of best for textsize.Thus, according to Google's suggestion, TextView's font size is best to use
Reference: http://www.cnblogs.com/greatverve/archive/2011/12/28/android-dip-dp-sp-pt-px.htmlHttp://www.360doc.com/content/15/0713/09/26211242_484580697.shtmlArticle content for reference onlyDpi==>device independent pixels (device independent pixels), different devices have different display effect, this and equipment hardware;Generally in order to support WVGA, HVGA and QVGA recommend this, do not rely on pixels;DPI, which can also be understood as p
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