Android location APIs make it easy for you to build location-aware applications, without needing to focus on the details of the underlying location technology. This becomes

Emailis messages distributed by electronic means from one system user to one or more recipients via a network Before starting Email Activity, You must know Email functionali

In Android, you can use SmsManager API or devices Built-in SMS application to send SMS's. In this tutorial, we shows you two basic examples to send SMS message − SmsMa

Android provides Built-in applications for phone calls, in some occasions we may need to make a phone call through our application. This could easily be done by using implicit Inte

文件区别：.h ：头文件。头文件包含类，类型，函数和常数的声明。.m ：源代码文件。这是典型的源代码文件扩展名，可以包含Objective-C和C代码。.mm ：源代码文件。带有这种扩展名的源代码文件，除了可以包含Objective-C和C代码以外还可以包含C++代码。仅在你的Objective-C代码中确实需要使用C++类或者特性的时候才用这种扩展名（百度

The Android SDK includes a virtual mobile device emulator that runs on your computer. The emulator lets you prototype, develop and test Android applications without using a physi

类CheckedTextView继承超类TextView并实现Checkable接口。当ListView的setChoiceMode方法并设定为CHOICE_MODE_SINGLE或者CHOICE_MODE_MULTIPLE，而非CHOICE_MODE_NONE时，使用此类是很有用的。使用范例：（1）/res/layout/main.xml 中添加相应资源I

RadioButton 单选按钮有两种状态：选中或未选中。这允许用户从一个组中选择一个选项。 RadioButton 属性 以下相关是 RadioButton 控件的重要属性。可以检查Android官方文档的属性和相关方法的完整列表，可以用它来改变这些属性在运行时。 继承自类 android.widget.TextView：属性 描述android:auto