The Google Pinyin Input is an input method (IME) optimized for typing Chinese on Android.

The app offers a variety of methods for fast and easy input of Chinese characters.
Key features:
- QWERTY Pinyin keyboard with gesture typing and intelligent correction
- 9 key Pinyin keyboard with gesture typing
- Stroke keyboard
- Full screen and half screen handwriting keyboard
- Latin keyboard
- Fuzzy pinyin
- Double pinyin
- Optimized UI for different screen sizes
- Voice input
- Themes

The app supports both simplified and traditional Chinese characters as well as punctuation emoticons Latin characters and digits. Voice input is network-based in order to provide highly accurate matches.

Note: To be used on your Android device the input method must be enabled in "Settings" → "Language & Input".

For typing Cantonese you could download the Google Cantonese Input:
https://play.google.com/store/apps/details?id=com.google.android.apps.inputmethod.cantonese

For typing traditional Chinese by Zhuyin or Cangjie you could download the Google Zhuyin Input:
https://play.google.com/store/apps/details?id=com.google.android.apps.inputmethod.zhuyin