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Please check adamrocker's simeji for a very good Japanese IME for Android. It's much better than the iWnnIME below.

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Original post:


At Google Developer Day last week, I received a free HTC Magic with a special version of Android made for Japan by Google. The OS is very minimal, meant only to support developers working on Android applications, but it came with a Japanese IME application called iWnnIME. Since there is currently no native Japanese IME available anywhere for Android, I decided to post installation instructions so everyone can enjoy it

Thanks to the guys at XDA developer forums for helping me with this.

Here is the simple pre-packaged installation guide how to get Japanese IME installed on your Android device:

Download the iWnnIME Japanese IME application from here and extract it so that you have the iWnnIME directory in your SDK tools directory.

Then do:

adb kill-server
adb root
adb remount
adb push iWnnIME/jp.co.omronsoft.iwnnime /data/data/
adb push iWnnIME/system@app@iWnnIME.apk@classes.dex /data/dalvik-cache/
adb push iWnnIME/libiwnn.so /system/lib/
adb push iWnnIME/lib_dic.conf.so /system/lib/
adb push iWnnIME/lib_dic_e.conf.so /system/lib/
adb push iWnnIME/libEnjcon.so /system/lib/
adb push iWnnIME/libEnjemailuri.so /system/lib/
adb push iWnnIME/libEnjlearn.so /system/lib/
adb push iWnnIME/libEnjlearnL.so /system/lib/
adb push iWnnIME/libEnjlearnM.so /system/lib/
adb push iWnnIME/libEnjrel.so /system/lib/
adb push iWnnIME/libEnjyomi.so /system/lib/
adb push iWnnIME/libkaomoji_kihon.so /system/lib/
adb push iWnnIME/libkaomoji_tyukyu.so /system/lib/
adb push iWnnIME/libnjaddress.so /system/lib/
adb push iWnnIME/libnjcon.so /system/lib/
adb push iWnnIME/libnjemoji.so /system/lib/
adb push iWnnIME/libnjexyomi.so /system/lib/
adb push iWnnIME/libnjexyomi_new.so /system/lib/
adb push iWnnIME/libnjexyomi_re.so /system/lib/
adb push iWnnIME/libnjfzk.so /system/lib/
adb push iWnnIME/libnjname.so /system/lib/
adb push iWnnIME/libnjtan.so /system/lib/
adb push iWnnIME/libnjubase1.so /system/lib/
adb push iWnnIME/libnjubase2.so /system/lib/
adb push iWnnIME/DroidSansJapanese.ttf /system/fonts/
adb install iWnnIME/iWnnIME.apk

After installation, open Settings -> Locale & Text and you should have options to enable and configure the "iWnn IME".




Open any application which has a text input, such as the mail application. Hold your finger on a text input for 3 seconds until the "select text input" dialog appears. Now you can select the iWnnIME input method.

If a T9 keypad appears, hold down the bottom left "文字" key for 3 seconds, and you will switch to the full-size qwerty IME keyboard.

「Android 日本語IMEをインストールする方法」
1. ダウンロードします。
2. (上の指示)をインストールします。
3. 設定メニューでIMEを有効にします。
4. テキスト入力(メールなどの)でアプリケーションを開きます。
5. テキスト入力のときに3秒間、指を握っています。
6. 「入力メソッドを選んでください」を選択します。
7. "iWnnIME"を選択します。
8. T9キーパッドが現れるなら、3秒がQWERTYのキーボードに変えるように主要な左下に指を握っています。
9. 英語と日本語の切り替えはShift-Spaceです。

Enjoy typing with native Japanese IME on Android !
Thanks Google

Update for Dream/Kaiser: To switch English/日本語 on a hard keyboard use shift+space.