Android開発の基礎_20101218

Soft ware Engineer, MTI Ltd.
android apps “music.jp”
Blog:

http://d.hatena.ne.jp/thorikawa/
FiremobileSimulator
http://ﬁremobilesimulator.org/
(iPhone/iPad app)

t witter: @thorikawa

Android

Activity
Service
BroadcastReceiver
Intent
ContentProvider

BroadcastReceiver

SD

Intent

Activity,Ser vice,BroadcastReceiver

URI

action

User
Activity

Content
Provider
Service

Intent

BroadcastReceiver
Event

Android開発の基礎_20101218

onCreate()

xml

Intent

onDestroy()

MediaPlayer.release()

WebView.destroy()

Activity

Intent

Activity.startActivity()

Activity.startActivityForResult()

2

Context.startSer vice() Ser vice
Intent

Context.bindSer vice() Ser vice
RPC

startService() vs bindSer vice() + RPC

startSer vice() Intent

bindService() bind
RPC

startService()

Ser vice.onStart()

Intent

bindService()

bind

bind Ser vice

Intent action

onReceive() (Intent)

onReceive()

android.intent.action.PHONE_STATE

android.intent.action.BOOT_COMPLETED

android.intent.action.TIMEZONE_CHANGED

android.intent.action.MEDIA_REMOVED

App Widget BroadcastReceiver

onReceive()

onReceive()

Intent Intent

Intent

Activity

Intent

Activity

AndroidManifeset.xml Intent Filter
Intent
<intent-filter>
<action android:name="android.intent.action.PHONE_STATE" />
</intent-filter>

<intent-filter>
<action android:name="android.intent.action.VIEW" />
<data android:mimeType="audio/*" />
</intent-filter>

<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data android:scheme="http" />
<data android:host="example.com" />
</intent-filter>

Content Uri
(content:/ /
/ URL)

query
update
SQLite insert
delete
etc... Client
File Content Provider ex)Activity

Internet

content://media/

MediaProvider

content://media/external/images/
media

content://media/external/images/
media/1

ContentProvider ContentResolver

Uri imagesUri = Images.Media.getContentUri("external");
Cursor cursor = getContentResolver().query(
imagesUri, // Content Uri
new String[] { ImageColumns.TITLE }, //
null, //
null, //
null //
);
while(cursor.moveToNext()) {
...
}
corsor.close();

ContentProvider

ContentProvider

public class MyContentProvider extends ContentProvider {

@Override
public boolean onCreate() { //
...
}

@Override
public Uri insert(Uri uri, ContentValues values) {
...
}

@Override
public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder) {
...
}

@Override
public int delete(Uri uri, String selection, String[] selectionArgs) {
...
}

@Override
public String getType(Uri uri) { // Content Uri
...
}

@Override
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
...
}

@Override
public ParcelFileDescriptor openFile(Uri uri, String mode) throws FileNotFoundException { //
...
}
}

AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="a.b.c" android:versionCode="1" android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="x">
<provider android:name=".MyContentProvider"
android:authorities="hoge" />
</application>
<uses-sdk android:minSdkVersion="4" />
</manifest>

content://hoge/
MyContentProvider

My App Mail App

action: Intent.ACTION_SEND
extra: EXTRA_STREAM=content:/ /hoge/1
Intent
Activity Activity
query
openFile

Content Provider
authorities="hoge"

Android

Activity, Service, BroadcastReceiver, Intent,
ContentProvider
Intent ContentProvider

Android開発の基礎_20101218

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Editor's Notes