Jollen's Embedded Linux and Android Consulting Services

Jollen’s Consulting
业

,
发,

发 ,
: www.jollen.org/consulting

www.jollen.org/consulting
Jollen Chen <jollen@jollen.org>

Embedded Linux 师 Embedded Linux Linux 动
经时 Openmoko 华区过
Openmoko 对

Android OS 术 Android 设务

Openmoko 华区湾联

-Android 师学画发师联 -

发参 Android 发画

长 Android porting (s3c244x/s3c64x0) Linux 动发 Linux

设术

Jollen - www.jollen.org/blog

Jollen - www.jollen.org/consulting

经变动将电

Android Copyright (c) 2009 Jollen’s Consulting . www.jollen.org/consulting

发

拟

协设


拟
拟


power management RAM
console Android gadget Android kernel
debug Android IPC
git.android.com patch
Openmoko 对ARMv4 Neo
FreeRunner


Eclipse 发环

target device 环
Android 发执

Eclipse
拟 (AVD)


Eclipse 发环

target device 环
Android SDK tools/ 录
DDMS


设径
http://www.eclipse.org/downloads/


类别


执选


类别

package com.moko.hello;

import com.moko.hello.R;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class HelloMoko extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setContentView(R.layout.main);

}
}


@Override


}
}

onCreate() View


动
视
过View UI
Activity foreground执


执 Activity 画 Activity盖
时 Activity paused
Activity 统亿时会 kill
执 Activity 画 Activity
时 Activity stopped 当统
时 Activity会统


android:autoLink 属
动将点 URL

过 autoLink 属将属设
web


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_height="wrap_content"
android:text="Jollen's Blog - http://www.jollen.org/blog"
android:autoLink="web"
/>
</LinearLayout>


@Override

TextView tv = new TextView(this);
tv.setText("Hello Moko");
setContentView(tv);

}
}

写


类别
R.java Android Development Kit 动

R.layout 类别 UI 类别
R.layout类别 main Android


执
统 kernel
个apk 个
process 执
Android 个 Linux
process
Android 统 process
Android 决

统决


类别
package com.moko.hello;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;

public class MokoService extends Service {

@Override

public IBinder onBind(Intent arg0) {

// TODO Auto-generated method stub

return null;

}

@Override

public void onStart(Intent intent, int startId) {

super.onStart(intent, startId);

}
}


类别
没 UI
Service 个background process
Service separated process 执
这 Service UI Activity
个process 执个 process
执
Android Activity 启动
Service


义
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.moko.player"
android:versionCode="1"
android:versionName="1.0.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".MokoPlayer"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service android:name=".MokoService">

<intent-filter>

<action android:name="com.moko.player.START_MUSIC" />

<category android:name="android.intent.category.DEFAULT" />

</intent-filter>
</service>
</application>
</manifest>


启动
public class MokoPlayer extends Activity {
@Override

startService(new Intent ("com.moko.player.START_MUSIC"));
}
}


public class MokoService extends Service {

@Override

public IBinder onBind(Intent intent) {

// TODO Auto-generated method stub

return null;

}

@Override

public void onStart(Intent intent, int startId) {

}

@Override

public void onDestroy() {

}
}


设点
Activity / Service
main.xml
View
AndroidManifest.xml - Android
Intent / BroadcastReceiver


UI
View UI 处 event
Android UI从

view tree
写过 XML
layout view tree


foreground process
visible process
service process
background process
empty process


android.widget.DatePicker android.widget.TimePicker


android.widget.Spinner android.widget.AutoCompl
eteTextView


android.widget.Button
android.widget.EditText
android.widget.CheckBoxa android.widget.ImageButton
ndroid.widget.RadioButton


android.widget.Gallery android.widget.ImageSwitcher


android.widget.ListView android.widget.GridView


android.widget.LinearLayout
(Horizontal) (Vertical)


android.widget.RelativeLayout android.widget.TableLayout


@Override


}

当Activity setContentView()
将 UI R.layout.main 视
R.layout.main 个TextView
义 main.xml


<TextView
android:text="@string/hello"
/>

'android:layout_width' - View
'android:layout_height' - View
'android:text' - TextView


战


<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="fill_parent">

<TableRow>

<TextView



android:text="www.jollen.org"

android:padding="3dip"

android:autoLink="web" />

<TextView



android:text="www.google.com"

android:autoLink="web" />

</TableRow>

</TableLayout>


package com.moko.layout;

import com.moko.layout.R;


public class HelloLayout extends Activity {
@Override
}
}


变
从对 dialog
widget
对


变
Apple iPhone 萤 touch

screen

统点 click

萤

设经统环当


变
Android 萤
设 Android

Android 经

经过点统

选单 Menu
对 Dialog
Toast


TextView Widget
Android Widget
Android Cupcake App Widget API
这个实


Android res/ 录个menu/
录 options_menu.xml


onCreateOptionsMenu()
MenuInﬂater类别将义选单
个类别 Menu MenuInﬂater
import这个


实
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.options_menu, menu);
return true;
}


处
过onOptionsItemSelected()
当时 Android 压
选类别 MenuItem
义选单UI会 R类别


处断
import android.view.MenuItem;

public boolean onOptionsItemSelected(MenuItem item) {

return true;
}


package com.moko.hellomenu;

public final class R {
public static final class attr {
}
public static final class drawable {
public static final int icon=0x7f020000;
}
public static final class id {
public static final int new_message=0x7f060000;
public static final int quit=0x7f060001;
}
public static final class layout {
public static final int main=0x7f030000;
}
public static final class menu {
public static final int options_menu=0x7f050000;
}
public static final class string {
public static final int app_name=0x7f040001;
public static final int hello=0x7f040000;
}
}


选
MenuItem getItemId() 选
ID
压选


处

int item_id = item.getItemId();

switch (item_id){

case R.id.new_message: break;

case R.id.quit: break;

default: return false;

}

return true;
}


Toast Android 类别
时 import android.widget.Toast
选单将
onOptionsItemSelected() 数实




switch (item_id){

case R.id.new_message:
Toast.makeText(
this,
"Please enter your message."
+ " Your message is at max 255 characters.",
Toast.LENGTH_LONG).show();

break;

case R.id.quit:
Toast.makeText(
this,
"Going to quit.",

break;


}


对
个对
过对对
询 Yes/No
询选
单选选
状
状处


Android 对
android.app.Dialog
实 Dialog AlertDialog
对
AlertDialog对询
询


Menu
“New Message”选
对询 “Yes/No”


实

onOptionsItemSelected() 断
R.id.new_message 时 UI 个对


实


switch (item_id){

case R.id.new_message:

AlertDialog.Builder builder = new AlertDialog.Builder(this);

builder.setMessage("Also post your message to Twitter?");

builder.setCancelable(false);

builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int id) {

}

});

builder.setNegativeButton("No", new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog, int id) {

}

});

AlertDialog alert = builder.create();

alert.show();

break;

case R.id.quit:
Toast.makeText(
this,
"Going to quit.",

break;


}

return true;
}


实点
AlertDialog.builder dialog
builder 这个对内

设 dialog builder -
builder.setMessage()
设对 -
builder.setCancelable()


实点
dialog builder 对个
Yes No -builder.setPositiveButton()
builder.setNegativeButton()
dialog builder AlertDialog

AlertDialog 对 -builder.create()
将AlertDialog UI -alert.show()


处
builder.setPositiveButton() 个
Yes 参数
个参数
个参数 click listener

个个click listener 当
压时 click listener
android.content.DialogInterface类别 click
listener


Intent 类 Notiﬁcation
Android 统达 Intent
Intent将处
电 ... 个
达


Web
电
voice mail
启Google map

启Street View


处启动
package="com.moko.hello"
<activity android:name=".HelloMoko"
<intent-filter>
</intent-filter>
</activity>
</application>
</manifest>


startService(Intent service) - Intent 启动Service
voice mail
启Google map

启Street View


@Override

startService(new Intent ("com.moko.player.START_MUSIC"));
}
}

电丢 android.intent.action.DIAL


Intent action data
android.intent.action.VIEW - tel:0988082


电号
import android.content.Intent;
import android.net.Uri;

@Override

Intent dial = new Intent();

dial.setAction("android.intent.action.VIEW");
dial.setData(Uri.parse("tel:0988082134"));
startActivity(dial);
}
}


电号

dial.setData(Uri.parse("mailto:jollen@jollen.org"));
dial.setData(Uri.parse("http://www.jollen.org"));

Android


个 Intent 个动
action 动动
Intent 动义内义

Android Intent 实内
动


Intent action 这个Intent 动
动处 action
笔
Uri 写


ACTION_CALL: 号
ACTION_GET_CONTENT:启动内选
ACTION_SET_WALLPAPER:设 Wallpaper


Android内 Intent action
Activity Action:启动Activity action
Broadcast Action: 过处 action

activity action: 启动Activity


实动号

public class HelloIntentDialer extends Activity {
@Override

Intent dial = new Intent();
dial.setAction("android.intent.action.CALL");
dial.setData(Uri.parse("tel:119"));
startActivity(dial);
}
}


package="com.moko.hellointentdialer"
android:versionName="1.0">
<activity android:name=".HelloIntentDialer"
<intent-filter>
</intent-filter>
</activity>
</application>
<uses-sdk android:minSdkVersion="3" />
<uses-permission android:name="android.permission.CALL_PHONE" />
</manifest>


实个
执
个
选个

实选


1. action ACTION_GET_CONTENT Intent
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);

2.设 Intent mime type 设 Intent mime type 声
intent.setType("audio/*");

3. 内选 Intent
startActivity(Intent.createChooser(intent, "Select music"));


写

属写

数写

类别义
数


执画


public class HelloIntentWallpaper extends Activity implements
View.OnClickListener {
@Override

Button button = (Button)findViewById(R.id.set_wallpaper);
button.setOnClickListener(this);
}

public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_SET_WALLPAPER);
startActivity(Intent.createChooser(intent, "Select Wallpaper"));
}
}


>

<TextView



android:text="@string/hello"

/>
<Button android:id="@+id/set_wallpaper"
android:layout_width="wrap_content"
android:text="@string/set_wallpaper">
<requestFocus />
</Button>
</LinearLayout>


设处


UI 处 View 处
个
View 类别动
Android 设
event listener 处 UI


Android UI 处
学 View UI 类别个
View Android 册个

个个数 callback
method 这个数 callback method
处


touch 动当

View 处时
Android 册View.OnClickListener

当 touch 发时 Android
数


View.OnClickListener click listener
这 UI Click动
当对View Click 时画
UI Android 会这个
View.OnClickListener 数
View.OnClickListerner 数 OnClick()


实

个实 Acitivty类
别实 View.OnClickListener


个View 册个event listener
当Android click
event listener callback method
Button类别处
时 Button类别
setOnClickListener() 册click listener


实

Button button = (Button)findViewById(R.id.btn);
button.setOnClickListener(this);
}


实
Toast.makeText(
this,
"Yes.",
}


AppWidgetProviderInfo

Widget layout

XML

AppWidgetProvider

View layout



AppWidgetProvider

义basic method

interfacing with App Widgets

当Widget 启动删时会
broadcast

View layout



AppWidgetProvider

View layout

义App Widget layout

XML


<receiver android:name="ExampleAppWidgetProvider" >
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="@xml/example_appwidget_info" />
</receiver>

AndroidManifest.xml


<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="240dp" 
android:minHeight="72dp"
android:initialLayout="@layout/example_appwidget"
android:configure="com.example.android.ExampleAppWidgetConfigure" >
</appwidget-provider>

<appwidget-provider> 义

res/xml/

<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"
android:minWidth="240dp" 
android:minHeight="72dp"
android:updatePeriodMillis="86400000" 
android:initialLayout="@layout/example_appwidget"
android:configure="com.example.android.ExampleAppWidgetConfigure" >
</appwidget-provider>

App widget timely information

时间

widget

Source: Android Dev Guide

实
public class ExampleAppWidgetProvider extends AppWidgetProvider {

public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
final int N = appWidgetIds.length;

// Perform this loop procedure for each App Widget that belongs to this provider
for (int i=0; i<N; i++) {
int appWidgetId = appWidgetIds[i];

// Create an Intent to launch ExampleActivity
Intent intent = new Intent(context, ExampleActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);

// Get the layout for the App Widget and attach an on-click listener to the button
RemoteViews views = new RemoteViews(context.getPackageName(),
R.layout.appwidget_provider_layout);
views.setOnClickPendingIntent(R.id.button, pendingIntent);

// Tell the AppWidgetManager to perform an update on the current App Widget
appWidgetManager.updateAppWidget(appWidgetId, views);
}
}
}


package="com.android.app.myapp" >
<uses-permission android:name="android.permission.RECEIVE_SMS" />
</manifest>

装时 installer


Source: Android Dev Guide

Landscape Orientation


设

决 widget

选 frame

阴设

设


PNG-24

设 transparent background

8-bit color


设


样
长别样

对
样

还


样
义
样

个义个样

个样


义样


样

>
<TextView
android:text="Hello, this is HelloStyles."
style="@style/myText"
/>
</LinearLayout>


执


个萤

从
个

个

个


设视

<resources>
<style name="myTheme">

<item name="android:windowNoTitle">true</item>
</style>
</resources>


package="com.moko.hellotheme"
<application android:icon="@drawable/icon" android:label="@string/app_name"

android:theme="@style/myTheme">
<activity android:name=".HelloTheme"
<intent-filter>
</intent-filter>
</activity>
</application>
</manifest>


package com.moko.hellotheme;


public class HelloTheme extends Activity {
@Override
/* setTheme(R.style.myTheme); */
}
}


动画



<translate xmlns:android="http://schemas.android.com/apk/res/android"
android:fromXDelta="0" android:toXDelta="10" android:duration="1000"
android:interpolator="@anim/cycle_7" />

<cycleInterpolator xmlns:android="http://schemas.android.com/apk/res/android"
android:cycles="7" />


android:padding="10dip"
android:layout_height="wrap_content">

<TextView
android:layout_marginBottom="10dip"
android:text="@string/animation_1_instructions"
/>

<EditText android:id="@+id/pw"
android:clickable="true"
android:singleLine="true"
android:password="true"
/>

<Button android:id="@+id/login"
android:text="@string/googlelogin_login"
/>

</LinearLayout>


package com.example.android.apis.view;

import com.example.android.apis.R;

import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;

public class Animation1 extends Activity implements View.OnClickListener {

@Override
setContentView(R.layout.animation_1);

View loginButton = findViewById(R.id.login);
loginButton.setOnClickListener(this);
}

Animation shake = AnimationUtils.loadAnimation(this, R.anim.shake);
findViewById(R.id.pw).startAnimation(shake);
}

}


将

动
边边义
区区内


>
<Button
android:text="small world"
android:textSize="12sp"
android:background="@drawable/arrow"
/>
<Button
android:text="big world"
/>
<Button
android:text="super world"
/>
</LinearLayout>


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