Mobile Application Development Final Review
- question type
- Chapter One
- Chapter two
- third chapter
-
- View class: the base class for all visual components
- Common properties of common components
- The properties used by the TestView component and the Buuton component are the same
- For example, to set the button as an OK button and center it, you need to use
- How to set the controls to be centered or left in the layout?
- Commonly used methods. For example, to obtain the password entered by EditText in the foreground in the background, use GetText. P37
- Information prompt box component Toast
- Can use one or two sentences to describe the characteristics of several layouts.
- linear layout
- relative layout
- How to use relative layout to realize the position of a component relative to other components
- LogTag: Android's built-in tool for outputting logs
- Chapter Four
- chapter Five
- Chapter Six
-
- Intent
- The data transmitted by Intent is of simple type, complex data cannot be transmitted
- Activity life cycle
- What method is called when one state goes to another
- The three states of Activity, when each state transitions
- The main activity opens the child activity, and the three steps to obtain the return value should be mastered
- The characteristics of explicit startup and implicit startup (summarized by yourself)
- How to end the current Activity
- What methods are there in the Service life cycle and when to call them
- The difference between the two startup methods
-
- Start: Simple, the service instance cannot be obtained, and the service can only be stopped after obtaining the service. The intermediate state of the service could not be obtained.
- BindService
- How to use BindService and Notification in the experiment must be mastered. understand thoroughly.
- Example of binding service: rewrite the unbind method, the service satisfies: get the method activity of the instance:,
- BroadcastReceiver
- Steps to use the service
- last chapter
question type
Multiple choice questions 15*2=30
Fill in the blank question 13*2=26 (alternatives are given in the question, just choose the correct one)
Short answer questions 4*6=24
Program design fill-in-the-blank questions 10*2=50 (alternatives have been given in the question, just choose the correct one)
Mainly investigate the notifications in the experiment: notification, service. The addition, deletion, modification and query operations of the database are combined with some operations on the interface.
Chapter One
common mobile phone system
android
Android Architecture
Android is a software platform and operating system based on Linux. It adopts a software stack (Software Stack) architecture, which consists of the Linux kernel layer, hardware abstraction layer, and system runtime library layer (also known as middleware) from bottom to top. layer), application framework layer and system application layer.
The Android program is packaged and released to the application store, and the extension used is .apk.
AndroidStudio depends on gdk and sdk (software development kit).
Chapter two
Android project structure, what folders are there
Units defined in Android
Know when to use these units.
Functions of the manifest file
All four components need to be registered in the manifest file.
How are the four components registered?
About the labels of the four major components.
Master the four major components, understand and recognize P20
first program written
How to get the foreground interface components
How to set android id for component in foreground
third chapter
View class: the base class for all visual components
Common properties of common components
The properties used by the TestView component and the Buuton component are the same
For example, to set the button as an OK button and center it, you need to use
How to set the controls to be centered or left in the layout?
Commonly used methods. For example, to obtain the password entered by EditText in the foreground in the background, use GetText. P37
Information prompt box component Toast
Can use one or two sentences to describe the characteristics of several layouts.
linear layout
relative layout
How to use relative layout to realize the position of a component relative to other components
LogTag: Android's built-in tool for outputting logs
A brief introduction to
the log tool class in Android is Log (android.util.Log), which provides the following 5 methods for us to print logs.
Log. v(). Used to print the most trivial and least meaningful log information. The corresponding level is verbose, which is the lowest level in Android logs.
Log. d(). It is used to print some debugging information, which should be helpful for you to debug programs and analyze problems. Corresponding level debug, one level higher than verbose.
Log. i(). It is used to print some important data, which should be what you really want to see and can help you analyze user behavior information. The corresponding level info is one level higher than the debug level.
Log. w(). It is used to print some warning information, indicating that the program may be potentially dangerous in this place. It is best to fix these places where warnings appear. The corresponding level warn is one level higher than info.
Log. e(). It is used to print the error information in the program, such as the catch statement entered by the program. When an error message is printed, it usually means that there is a serious problem with your program and must be fixed as soon as possible. The corresponding level error is one level higher than warn.
Reprinted from: Android Study Notes (5): Use of Android's built-in log tool
Chapter Four
How to set touch screen events? P76
Button set click event
chapter Five
ListView
Three steps for ListView to display data
Show what kind of Adapter a thing should use
The Spiner in the second chapter also needs the Adapter to set the data source: ArrayAdapter
progress bar component
Star rating component RatingBar
auto complete text box
AlertDialog
Chapter Six
Intent
The data transmitted by Intent is of simple type, complex data cannot be transmitted
Activity life cycle
What method is called when one state goes to another
The three states of Activity, when each state transitions
The main activity opens the child activity, and the three steps to obtain the return value should be mastered
The characteristics of explicit startup and implicit startup (summarized by yourself)
1. Display and directly write which one you want to start, generally use the data between the activities in the application to start.
2. Implicitly start according to the matching of category data, which is common in starting certain specific actions in the system, such as making a phone call.
How to end the current Activity
finish
//关闭当前activity方法一
finish();
//关闭当前界面方法二
android.os.Process.killProcess(android.os.Process.myPid());
//关闭当前界面方法三
System.exit(0);
//关闭当前界面方法四
this.onDestroy();
What methods are there in the Service life cycle and when to call them
The difference between the two startup methods
Start: Simple, the service instance cannot be obtained, and the service can only be stopped after obtaining the service. The intermediate state of the service could not be obtained.
BindService
How to use BindService and Notification in the experiment must be mastered. understand thoroughly.
Service
accelerates and decelerates
Example of binding service: rewrite the unbind method, the service satisfies: get the method activity of the instance:,
Service
accelerates and decelerates
BroadcastReceiver
Service
acceleration and deceleration
broadcast
Steps for usage
Static registration Dynamic registration
Steps to use the service
1. Write various inheritance services
2. Register in the manifest file
3. Use start bind
last chapter
Four data storage methods and their characteristics
simple file storage
Built-in database:
Code library building, the key method
SQLite CRUD
ContentProvider
