20169204 2016-2017-2 Learning Summary, Thirteenth Week
Summary of Teaching Content
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Handling the Handler
One of the most interesting and useful types in the Android SDK is the Handler class. Most of the time, it is used to process messages and schedule a task to run at a future time. This chapter explains what the class is good for and offers examples. In this chapter we have learned about the Handler class and write an application that makes use of the class.
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Asynchronous Tasks
This chapter talks about asynchronous tasks and explains how to handle them using the AsyncTask class. It also presents a photo editor application that illustrates how this class should be used. In this chapter you learned to use the AsyncTask class and created a photo editor application that uses it.
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Services
So far in this book, everything you have learned is related to activities. It is now time to present another Android component, the service. A service has no user interface and runs in the background. It is suitable for long-running operations. This chapter explains how to create a service and provides an example.
A service is an application component that runs in the background. Despite the fact that it runs in the background, a service is not a process and does not run on a separate thread. Instead, a service runs on the main thread of the application that invoked the service.
Code hosting
Sumary of the test last week
In last week's class, I have a small test to be caught off guard. It is a hard time for me, there are so many mistake which I made, and remind me to study hard in this week. Recall the mistakes before, mostly focused on the basic concept of the textbook and the related tutorials not proficient,as to my answer the question that what's the three most popular IDE environment was wrong!
So, this week, I have paid my attention on the textbook, more focus on some basic knowledge, rather than eager to programming. Carefully read the tutorial, the environment is configured accurately, standardized format for the follow-up study to lay a good foundation for the environment.
Feeling
Thirteenth weeks later, the learning method is not very skilled, but I am determined according to this method, continue to study, will have unexpected results. In fact,I learned the basic knowledge of Java was so few in past two weeks, far less than to learn programming much past time. This is due to a lack of understanding of the nature of the compiler. After two weeks of exploration and learning, I gradually understand the operation of the Ubuntu skills, but also enjoy the programming to bring a happy mood. I think I'm more interested in programming.
Finally, thanks to my classmates and teachers help in everything! Thank you!
Blog Comments
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Learning partner
Le Wu -
development teammates
Mingzhao Yang
Changle Tong
Xing Sun
Hui Zhao
Learning progress bar
| Bolg | Time | |
|---|---|---|
| Target | 15 | 15 |
| First week | 1/1 | 3/4 |
| Second week | 1/1 | 3/4 |
| Three week | 1/1 | 4/6 |
| ... | ... | ... |
| Thirteenth week week | 1/1 | 6/6 |
Reference
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[Java for Android 2nd Edition]
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[Java Study notes(8th Edition)Learning guidance]