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android – 页面初始化时让组件得不到焦点

最近在做一个应用，其中一个界面上有几个EditText，我发现每次启动这个界面之后焦点就自动落在第1个EditText上，从而使EditText的提示不能显示。解决的方法是：在EditText的父组件（比如linearlayout）添加两个属性，如下 android:focusable="true...

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可循环显示图像的Android Gallery组件

http://www.cnblogs.com/nokiaguy/archive/2010/08/23/1806870.html Gallery组件主要用于横向显示图像列表，不过按常规做法。Gallery组件只能有限地显示指定的图像。也就是说，如果为Gallery组件指定了10张图像，那...

编写自定义的 Android Preference 组件

Android SDK 提供好几个 Preference 组件，例如 CheckBoxPreference、EditTextPreference、DialogPreference、ListPreference 等，这些组件是跟 Android 提供的 Preference 存储机制绑定...

Android系列教程（2）：为 TextView组件加上边框

本文为《Android/OPhone 开发完全讲义》的内容连载，如需转载，请注明作者和出处，谢谢！本文为新书《Android/OPhone 开发完全讲义》的内容连载。《Android/OPhone开发完全讲义》一书现已出版，敬请关注。《Android/OPhone 开发完全讲义》目录源代码下载 ...

新书内容连载（1）：自定义Android组件之带图像的TextView

本文为原创，如需转载，请注明作者和出处，谢谢！本文为新书《Android/OPhone开发完全讲义》的内容连载。《Android/OPhone开发完全讲义》一书一将在近期出版，敬请关注。在本例中要实现一个可以在文本前方添加一个图像（可以是任何Android系统支持的图像格式）的TextVie...

Android 组件系列（1）：自动完成输入内容的组件（AutoCompleteTextView ）

本文为原创，如需转载，请注明作者和出处，谢谢！ AutoCompleteTextView和EditText组件类似，都可以输入文本。但AutoCompleteTextView组件可以和一个字符串数组或List对象绑定，当用户输入两个及以上字符时，系统将在Auto...

Android组件系列（1）：自动完成输入内容的组件（AutoCompleteTextView ）

本文为原创，如需转载，请注明作者和出处，谢谢！ AutoCompleteTextView 和 EditText 组件类似，都可以输入文本。但 AutoCompleteTextView 组件可以和一个字符串数组或 List 对象绑定，当用户输入两个及以上字符时，系...

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