摘要：A content provider manages access to a central repository of data. A provider is part of an Android application, which often provides its own UI for w 阅读全文

摘要：Content providers manage access to a structured set of data. They encapsulate the data, and provide mechanisms for defining data security. Content pro 阅读全文

摘要：The Android multimedia framework includes support for capturing and encoding a variety of common audio formats, so that you can easily integrate audio 阅读全文