iphone 6 guide book

step.The resolution displayed on the device screen may be lower than that shown in the previous step.Before the image can be displayed, it must be downsampled (resized) to lower pixel resolution.To display the previous image, you must re-sample (resize) at a lower pixel resolution ).Physical DevicePhysical Device Finally, computed pixels are displayed on the physical screen.Finally, the calculated pixels are displayed on the physical screen.The PPI number tells you how to adjust pixels fit into

Delete all file methods in your address book at once: 1, the iphone connected to the PC 2. Open itunes 3, above: "Summary"/Information/"Application"/"ringtones"/... In that column, click the "Info" bar. 4, point into the "Information" column, in the "Sync Address Book and Outlook" in the front of the options bar, usually hit the "small Right hook", click Canc

, Error); abgroupaddmember (group, record, Error); nslog ( @" Is success % d " , Issuccess); abaddressbooksave (AB, Error); cfrelease (Group );} 3. Get the Contact Group View code -(Nsarray *) Getgroups {nsmutablearray * Groupnames = [[Nsmutablearray alloc] init] autorelease]; abaddressbookref AB = Abaddressbookcreate (); nsarray * Array = (nsarray * ) Abaddressbookcopyarrayofallgroups (AB ); For ( Int I = 0 ; I ) {Abrecordref Group = [Array objectatindex: I]; cftyperef group

Example.png.The picture is the same as the screen, also has 1x mode, 2x mode. In the iphone 6 Plus, there is also 3x mode, the principle is the same.When iphone 4 selects the [email protected] image, it will generate a picture with a size of 40 dots and 2x mode. This time, the picture will look very clear. And there is no adaptation of the old program, [email pr

mode will prefer [email protected], if [email protected] does not exist, select Example.png.The picture is the same as the screen, also has 1x mode, 2x mode. In the iphone 6 Plus, there is also 3x mode, the principle is the same.When iphone 4 selects the [email protected] image, it will generate a picture with a size of 40 dots and 2x mode. This time, the pictur

Preface to iPhone game development practices guide Writing a game is not an easy task. Even if you are an experienced programmer, the design pattern, terminology, and thinking process of the game may seem a bit strange and unconventional. Since I spent most of my work on creating commercial applications, writing a game is only a hobby. Over the years, my children have enjoyed playing the games I wrote. Wi

screenshot tool for foreignersHttp://www.devdiv.com/thread-70152-1-1.html Part 4 -- Tutorial:1. obj-C pocket quiz hands (CHM ):Http://www.devdiv.com/thread-30339-1-1.html 2. Get started with xcode_cn developers. It's a good introduction!Http://www.devdiv.com/thread-49926-1-1.html 3. Basic iPhone development tutorial (Chapter 12)Http://www.devdiv.com/thread-65932-1-1.html 4. Objective-C routine series:Http://www.devdiv.com/forum.php? ... Ypeid typeid

IOS 11, iPhone X, and Xcode9 adaptation guide, ios11iphone After iOS11 is updated, it is found that adaptation is required in some areas. After sorting, the priority is divided into the following three categories: 1. changes caused by upgrade of iOS11; 2. changes caused by Xcode9 packaging; 3. Compatibility with iPhone x I. changes caused by upgrade of iOS11 1. a

So far, I have made some work to adapt the old project to iOS 6 and iPhone 5, and summarized some things: 1. For iPhone 5 and iOS 6, xcode4.5 is required at the lowest level. xcode4.5 does not support armv6, that is, systems below iOS4.3.3. Unsupported hardware devices include: iPod 2nd gen,

divided into chapters, which makes it look more comfortable (see figure 5) (Figure 5) Select "Save Epub" in the upper-left corner to save it (see figure 6) (Figure 6) The next step is simple. Select the output path, that is, the text storage address (see figure 7 and Figure 8) (Figure 7) (Figure 8) Now, the Epub book we want to create is successfully created, be

1. Limit background activity First, restricting background application activity is the most effective power-saving measure. To be precise, the optimization is based on your usage requirements. In this setup column, you will find a large number of application lists, but obviously not all useful, if you do not need to accept some of the message push, the full shutdown is OK. 2. Close backstage application in time To extend the battery life of the iphone