Piglet's Android starter Road Day 5-part 2

Piglet's Android starter Road Day 5-part 2

Activity fragment: Fragment (Shard)

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Introduction to this section:

In Part 1 We have detailed analysis of the basic unit activity of Android, and in Part 2 we will explain

Activity fragment: Fragment (Shard), initially designed to simplify the UI design of a large-screen phone or tablet, but is now commonly used

Ordinary mobile phone, such as fragment + Slidemenu to achieve side-slip effect , there are many relevant examples on the Internet, master the basic usage of fragment

It's easier to understand the code for some of the effects of using fragment!

OK, just start this section!

Learning Roadmap for this section:

Body:

Overview of fragment and life cycle diagram:

process for creating fragment ① static load fragment:

code example:

Divide activity into two fragment

As follows:

Relatively simple, the code is not listed, you need to download it: reference code download

Ps:fragment subclasses are:

dialog box:dialogfragment list:listfragment

option settings:preferencefragment WebView Interface:webviewfragment

② dynamic Load Fragment

code example: switching between fragment and replace

When we load different fragment when we switch the screen, we write the method of dynamically loading fragment in the activity's OnCreate () method

When we switch the screen, the activity will be destroyed and then loaded from the new!

The code is also very simple, to download it yourself: code Download

fragment interaction with the activity

fragment management and fragment affairs

code example: Click on the list item on the left to display the appropriate details on the right:

As follows:

When vertical screen:

At horizontal screen:

This code is a bit difficult for beginners to understand: but it is a relatively simple example, compared to the slippery side:

You have to wonder! Reference code Download: code Download

The basics of ps:fragment are so much for the time being, fragment is an important part of Android UI development,

In the future will be combined with examples to explain! There will be further lectures in the future! Thank you \ (^o^)/