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Android Jetpack
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〜 2018.5.19 Google I/O報告会in福岡 〜
● Twitter @fkm
● モケラボ株式会社 代表取締役
● GDGのメンバーではありません
● もちろんGDEでもありません
about:fkm
本書きました
● 初心者〜中級者向け
● https://www.amazon.
co.jp/dp/B075XC9L
C5/
● モバイルアプリの
受託開発
● 技術情報の
提供・支援
https://tech.mokelab.com
● モケラグッズ販売
about:モケラボ
LINEスタンプあります
Navigation?
Navigation
● アプリ内での画面遷移
● Fragmentの遷移で実現
● DeepLinkサポート
● API 14〜
implementation 'android.arch.navigation:navigation-runtime:1.0.0-alpha01'
implementation 'android.arch.navigation:navigation-fragment:1.0.0-alpha01'
dependencies
つかいかた
● navigation.xmlをつくる
○ いいエディタあるよ!
● アクティビティのレイアウトに
NavHostFragmentを貼る
● 遷移イベントをつくる
navigation.xml
res/navigation
の下にいれる
みんな大好きxml
ナビゲーションエディタ
Activityでの設定
androidx.navigation.fragment.NavHostFragment
をレイアウトに貼り付ける
Activityでの設定
大事なところ
● app:navGraph="@navigation/nav_main"
○ どのxmlファイルを使うか
● app:defaultNavHost="true"
○ バックボタンのイベントに反応する
イベントの設定
View.OnClickListenerを作るメソッドがある
Navigation.createNavigateOnClickListener(
R.id.action_top_to_itemList)
イベントの設定
NavControllerを取ってきて、
navigate()を呼ぶ方法もある。
Navigation.findNavController(view)
.navigate(R.id.action_top_to_list)
遷移アニメーション
res/animにアニメーションを入れておく
パラメータ
nextFragment.setArguments(bundle)
で、パラメータをセットするんですよね!
パラメータ
navigate()にBundleが渡せる
Navigation.findNavController(view)
.navigate(R.id.action_top_to_list, bundle)
パラメータ
取得はこれまでと同じ
val id = arguments!!.getInt("id")
型安全なパラメータ
Gradle pluginを追加すると、
型安全なパラメータ渡しが
できるようになります
時間の都合上、省略
DeepLink
URIを見て、適切なフラグメントを
表示する機能を実装したい
が、面倒だ。。。
DeepLinkの設定
フラグメントを選んで、DeepLinksの所で
+をクリック
DeepLinkの設定
URIには{id}のようにパスパラメータが
設定できる
パラメータ取得
argumentsにStringで入ってる
val id = arguments!!.getString("id")
現時点での制約
● SharedElement使った遷移はできない?
● トップ部分がBottomNavigationなパターン
○ 子Fragmentはやっぱり自力でaddが必要そう
● まだまだ実装途中な感つよい
まだまだ実装途中な感つよい
Android Studio 3.2 Canary 14で
スライドを作ってると。。。
鋭意開発中
よーしAndroidXにするぞ
import androidx.appcompat.app.AppCompatActivity
動くはずだよね。。。
よーしAndroidXにするぞ
ん?support.v4.app.Fragment?
→Jetifierは現時点(2018-5-20)で
 動作しないっぽい
DeepLink用IntentFilter
<activity>
<nav-graph android:value="@navigation/nav_main"/>
</activity>
これで、IntentFilterが追加されるはず。。。
DeepLink用IntentFilter
いけそう
DeepLink用IntentFilter
だが、apkにはいない。。。
DeepLink用IntentFilter
サンプルにはこんな記述がorz
参考資料
● 公式ドキュメント
○ https://developer.android.com/topic/librari
es/architecture/navigation/
● サンプル
○ https://github.com/googlesamples/android
-architecture-components
Thanks!

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Android Jetpack : Navigation @ Google I/O 2018報告会in福岡