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This article will explain in detail what the changes in XCode9 are, and the editor thinks it is very practical, so I share it with you for reference. I hope you can get something after reading this article.

1 collapse code

Focus on the method name of the implementation of the method. Press the command key and the entire function will be framed. Used to mark the beginning and end of this method.

Click at this time, and the menu appears

In the menu, there is a Fold that can be used to fold, which now has an animation effect.

Click on the other above

The commonly used refactoring methods have been integrated in this right-click pop-up menu. It can be seen that the support of XCode9 for refactoring has increased again, and the refactoring code will be more convenient and faster in the future.

Before XCode9, clicking CMD+ on a variable or method was a direct Jump to Definition, but now, this menu pops up, which is one more step to jump to the definition of a variable, and it may be inconvenient at first

For those who want to jump directly to the variable definition, it is now control+command+ to click

Of course, if you still feel that the previous cmd+ click jumps to the variable definition, you are more used to it in the

Change to the same behavior as before

2 about warnings

We define a block without parameters, usually in the following way

Typedefvoid (^ UpdateSwichBtnBlock) ()

A warning will be prompted in xcode9

This block declaration is not a prototypeInsert 'void'

The solutions can be as follows

Typedefvoid (^ UpdateSwichBtnBlock) (void)

But in this way, many third parties need to change, and the area involved is too large, which may not be suitable at present, although this is a trend.

Or, if there are only a few places, you can use the

# pragma clang diagnostic push#pragma clang diagnostic ignored "- Wstrict-prototypes" typedefvoid (^ UpdateSwichBtnBlock) (); # pragma clang diagnostic pop

A thorough and temporary solution to all such warnings

In the setting of the project

Set to NO, these warnings disappear

However, this is not a good habit, just temporarily do not allow this type of warning.

3 refactoring correlation

Rename a method or variable, CMD+ click on the method, the menu that appears, select rename

As you can see, it will rename changes, all animation folded up, so that you have a more concept, which will affect, more intuitive!

4 cmd + /-can be used to adjust the font size of the editor

It will be very useful when presenting PPT

Great Enhancement of 5 Source Control

XCode's built-in git system feels so powerful that it can be abandoned in the future.

Github account is supported.

XCode-Preferences-Accouts can log in to your GitHub account as follows

After logging in, through the Xcode menu

The clone at the bottom of Source Control, you can clone the project on your github. Is it very convenient?

The above also provides a considerate search box, if there are many projects on your github, it is also very convenient to locate.

Open any git project

A new list of Show the Source COntrol navigator is provided

Here is a list of your branch related information, you can easily switch branches, and so on git operation

In the edit box on the right, you can see the top row

ALL, Last 24 hours, Last 7 Days, Last 30 Days

There is also a Filter filter box that can be easily used to locate the submission record we are looking for.

Double-click any submission record

You can see the detailed changes this time.

For our commonly used git merge tag and so on, they also have built-in strong support.

Third-party git clients, such as Tower and Source Tree, are going to be abandoned every minute.

6 new construction system

The new build system is still just Preview, which is written in pure swift and is said to be a great help in improving compilation speed, but it has not become the default for now. Apple says it will be the default Build in the near future. You can refer to Apple's official document xcode_9.html.

Here is a New Build System (Preview)

7 crash can be seen directly on this computer.

Of course, this will only be allowed by the user on the machine and when you submit it to appstore.

8 runtime problem detection

In 8, Address Scanitizer and Thread Scanitizer are included, and Undefiner Behavior Scanitizer is added to Xcode9, which can detect a series of problems in real time. But what we can feel more obviously is Main Thread Checker, which ensures that you don't write the UI update code in the non-main thread at run time.

For example, in the code

It can be seen that it is still very powerful, although we do not have the source code of Fabric, but its internal call [UIApplicationsharedApplication] .statusBarOrientation] is still detected.

Of course, if you want to turn it off, you can do it in scheme editor.

9 the simulator can be opened more, and the simulator can log in

Not only that, but now the simulator can also log in to your appid, so it is very convenient to synchronize contacts and other information to the simulator. In the past, you had to test the functions related to the contacts, and you have to build them one by one, which is much more convenient now.

Also, if Photo's Share is enabled, then the simulator should also be able to synchronize photos, and the old way of importing pictures one by one can finally say goodbye.

The simulator can now be resized at will, and I have to say that this function is so cool.

After logging in to appid, Files is available, you can browse to the contents of your iCloud Drive, and it becomes super convenient for the need to share files to the simulator.

The appearance style of the simulator has also returned, which is directly the appearance of iPhone. In the past, it may be because the simulator can not be resized at will, so there is no appearance.

Of course, you can remove the appearance of the skin. In the Window show Device Bezels of the simulator, the removal option is the same as before.

10 wireless development

This machine that only supports ios11 is very simple, as long as you turn on the support in Device.

11 synchronization of Folder and Group

Previously, we changed the name of Folder in XCode, and the name of the folder corresponding to the project in FInder will not be changed synchronously, which will make it very inconvenient for us to rename the folder. We often have to remove it in XCode, rename it in Finder, and then add it back to Xcode.

Now the renamed Folder,Finder in Xcode9 has also changed synchronously.

We previously suggested that a virtual group will not create a real directory in the corresponding folder, of course, this may or may not be a feature you need. In 9, the default behavior changed. The corresponding real folder will be created. If you want to just build a virtual group as before, you need to choose New Group without Folder

You may be worried that you can't tell whether the group is virtual or actual.

Rest assured, Apple has given a logo to distinguish, and there is a small triangle in the lower left corner of the virtual.

When you move a Group (both virtual and real ones are the same), it will synchronously move the corresponding real folder to the corresponding location, which greatly facilitates us to adjust the directory structure of the project later, which is called painful before. After the adjustment in the project, the structure in the project does not correspond to the real folder, and this will not happen in the future.

A file synchronized bug of XCode9 is found here.

As shown in the picture, the project we have established is as follows

Where xuni is a virtual directory.

At this point, if we move the entire xuni to Views,

You can see that there is something wrong with xcode. Originally, I just moved the xuni to the Views, but now the real View1 has moved, causing the SecondView to disappear.

I hope Apple can solve this problem in the next version.

In fact, judging from the above, it is not easy to have problems in establishing the actual directory. Maybe this is because Apple changed the default behavior of New Group to the establishment of the corresponding actual folder.

Infrequent updates

Server & Bots

Now XCode has a built-in XCode Serever for continuous integration, because it is rarely used, so it will not be expanded

This is the end of this article on "what are the changes in XCode9?". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, please share it for more people to see.

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