Course 03

1
Course 03
2
Android ????
Android OS Stack
?????????
????????
Activity
????????
Intent
Service
Broadcast Receiver
????
Content Provider
View System??
Layouts
??????
UI s
?????????
3
Android ????
Android OS Stack
?????????
????????
Activity
????????
Intent
Service
Broadcast Receiver
????
Content Provider
View System??
Layouts
??????
UI s
?????????
4
Framework Stack OverView
5
(No Transcript)
6
Linux Kernel

• Base on Linux 2.6
• ? ???kernel, ???GPL????(??)
• Linux ???GNU General Public License version 2
  (GPLv2)
• Driver???linux userspace,?????????driver source
• Power Management??
• ??????
• ????, ???

7
Libraries

• Library?c/c??
• ?????, ???????Application Framework ???????

8
Android Runtime

• Core Libraries
• ???Java Programming Language
• Dalvik Virtual Machine (??DVM)
• ??????
• Run(?) on Linux ?Virtual Memory, multiple
  processes
• ??????(?????)CPU??(not JIT)
• ????, ?????

9
Application Framework

• Google??API,?framework????????????????,???app?,???
  ??
• ???????
• http//developer.android.com/reference/packages.ht
  ml

10
Applications

• ?????????-????eMail ?Map ?Calendar ?????
• ?Market?????
• ???????

11
Applications(cont.)

• ??Java language??
• ????, ?tool/aapt.exe ???.apk
• Apk -gtapplication
• ??????
• ??application????Linux process???
• ??process????Java VM, isolate from other
  applications
• ??application??????, ??????application???

12
Android ????
Android OS Stack
?????????
????????
Activity
????????
Intent
Service
Broadcast Receiver
????
Content Provider
View System??
Layouts
??????
UI s
?????????
13
Application Framework????????????

• ????
• Activities-?????????????
• Activity Life Cycle
• Services-????
• Services Life Cycle
• Broadcast receivers -???????
• Content Provider-????
• ???? Intent

14
1.Activity

• ??UI, ???user??
• ?????button?list?picture?text
• UI?????(?????????)
• ??intent?????activity
• ????????Service, handler, ??5?, ???ANR (Android
  is Not Responding)

Reference Component Lifecycles
15
ActivityLife Cycle
!!!
??-gt???? onCreate() onStart() onResume() ????-gt?
? onPause() onStop() onDestroy()
Reference Component Lifecycles
16
Android ????(VM) -???????

• Active (??)
• ?????????? Activity ?,Activity ??????
• ? Android ???,?????????? Activity
  ????(Active)???(Running)???

Reference http//code.google.com/p/androidbmi/wik
i/LifeCycle
17

• Paused (??)
• ?Paused????? Activity ?????,??????????
• ?????Toast?AlertDialog????????,???????? Activity
  ???????????Toast?AlertDialog??????????? Activity
  ???Activity ???Paused????,??????? Activity ???
• Demo gt ApiDemo , App/Dialog

18

• Stopped (??)
• ?Stopped??????? Activity ????,??? Activity
  ??????,????????
• ?????Home??,?????????Stopped???????????
• ??Stopped???? Activity,??????Notification?????

19

• Dead (???????)
• ?Dead???? Activity ?????????????,????????????
• ????? Activity,?????????finish???
• ????????,???????????,?????????????????,????Stopped
  ???? Activity ?????????

20
(No Transcript)
21
????????
22
(No Transcript)
23
(No Transcript)
24
Intent

• ????????????????
• ??Intent???????(action),???????????
• ?
• public void onClick()
• Uri uri Uri.parse("http//www.nccu.com.tw/")
  
• Intent intent new Intent(Intent.ACTION_VIEW,
  uri)
• startActivity(intent)
• ???????, ?Android????????
• Intent Filter ??????Activity????? ?

25

• Demo
• demo code -gt demo_Intent
• ??Intent , ??Activity ?????

26
Service

• ????????, ?UI??
• ???ANR???
• ?
• ????
• ????????
• ??or?????
• ??bindService(), ?Activity?Service??

27
Broadcast Receiver

• ??????Intent
• ??sendBroadcast()??????, ???????
• ??5sec.???
• ?????Activity or Service or ????
• ?
• Android???????????, ????????
• ??????????????, ???????, ???????, ???, ???
• Demo Code\ demo_BroadcastReceiver
• ?DDMS??????,????

28
Content Provider

• ?????????
• ?
• ??Contact
• content//contacts/people/45 (???????45??????)
• content//contacts/people/ (???????)
• Demo demo code/demo_ContentProvider

29
??Android Framework ??,????App??
1.???????? (Applications) http//www.youtube.com/w
atch?v3aUjukCdPyQ 2.??????? (Intent
filter) http//www.youtube.com/watch?v3LkNlTNHZzE
3.??????????? (webView) http//www.youtube.com/wa
tch?vEx7YsQ_YH2U 4.?????????? (service
??) http//www.youtube.com/watch?v7lScgyXGxwo
Reference http//www.youtube.com/user/androiddev
elopers
30
Android ????
Android OS Stack
?????????
????????
Activity
????????
Intent
Service
Broadcast Receiver
????
Content Provider
View System??
Layouts
??????
UI s
App???????
31
View
32
(No Transcript)
33
Views
34
View???UI(Widget)????
http//developer.android.com/intl/zh-TW/reference/
android/widget/TextView.html
Refer http//school.brad.tw/mod/resource/view.php
?id384
35
LayOut-??UI?????
Reference Declaring Layout.
36
LayOut
Reference Declaring Layout.
37
Demo demo code\demo_ChangeLayOutReference
ApiDemo -gtViews -gtLayouts
LayOut
38
View Widget

• ???????????View Object
• EX Buttons , checkboxes , EditText ,
• EX Date Picker , Clock , Zoom Controls
• ??????,????Widget ?????View Object
• Ref Building Custom Components

39
(No Transcript)
40
(No Transcript)
41
Tabs
42
(No Transcript)
43
ImageView
44
ImageSwitcher
45
Progress Bar
46
Radio Group
47

48
Auto-Completion
49
DatePicker
50
Rating Bar
51
???UI?????????

• UI Events
• 1. Define an event listener
• EX  View.OnClickListener
• View.OnTouchListener
• View.OnKeyListener
• 2.  register it with the View

52
Android ????
Android OS Stack
?????????
????????
Activity
????????
Intent
Service
Broadcast Receiver
????
Content Provider
View System??
Layouts
??????
UI s
?????????
53
package com.demo.android.hello import
android.app.Activity import android.os.Bundle im
port android.view.View import android.widget.Butt
onimport android.widget.TextView
54
public class myMainActivity extends Activity
/ Called when the activity is first created.
/ _at_Override public void onCreate(Bundle
savedInstanceState) super.onCreate(saved
InstanceState) setContentView(R.layout.ma
in)
55
??1.Button -gt ??

• Demo code -gtpratice00_Button
• Step
• 1. res/-gt Layout/-gt main.xml
• Button , TextView
• ????
• 2. Button ,TextView????,
• 3.??findViewById ??????????????
• 4.??onClickListener ??
• 5.???Button?

56
//2. Button btn_MyButton TextView txt_MyText
//3. btn_MyButton
(Button)findViewById(R.id.Button01)
txt_MyText (TextView)findViewById(R.id.TextView0
1)
//5. btn_MyButton.setOnClickListener(showT
ext)
//4. private View.OnClickListener showText
new OnClickListener() _at_Override publi
c void onClick(View v) // TODO
Auto-generated method stub txt_MyText.setText("
Hello World !")
57
??2

• ??,??????,???????,????
• setTextColor()
• http//developer.android.com/intl/zh-TW/reference/
  android/widget/TextView.html
• Color
• http//developer.android.com/intl/zh-TW/reference/
  android/graphics/Color.html

58
Next
Android ????
?????????
?????????
Emulator
Debug Tools
????????
?????App BMI
Demo Code
Plan Design
????
Coding- UI?? ???
??????
??????- Dialog
Activities Intent
??????
Data Storage
???-?????
????-Web Service