This article will show you an example of how to use intent to invoke an android camera programmatically to take and save pictures. It will also tell you how to display those pictures one by one when the user clicks one picture.

From the previous article, you have learned how to implement an android custom content provider with examples. This article will show you how to call it’s methods to insert, update, delete and query data from it.

This article will show you examples of how to create your own custom android content provider.

The android content provider is used to share data between different android apps. Generally, android app data is saved in SQLite database tables. Use content provider, you can choose which table or view’s data to be shared with other apps. This can make your android app data more safety.

This article is one of the Android contact management series, it will tell you how to update or delete android contacts programmatically. If you need to read previous articles, you can read below two first.

The previous article tells you how to add android contacts for each detailed contact field programmatically. This article will show you how to read contacts fields out from android contacts and print them in the android monitor Logcat console.

This article will give you an example of how to create android contact programmatically and how to insert each android contact field into the contact data table. When clicking the add contact button, it will generate one contact and insert it into android contact tables.

Android contacts is a built-in application. It also provides content providers which the third-party app can use to manipulate android contacts, for example, add, delete, update and query contacts. This article will introduce detailed information about how the android contacts are implemented.

Android contacts information is stored in data table. The data table is saved in SQLite database file /data /data /com.android.providers.contacts /databases /contacts2.db. There are columns data1 to data15 in data table, this article will tell you which column stores what type of contact data.