Android UI

android.widget.ImageView is android image manipulation class. It can be used to load images, show images, and edit images. This article will introduce this class to you and show you an example to demonstrate it’s functions.

android.os.CountDownTimer is an abstract class that provides a count-down timer function. You must create a sub-class of it to use. This example will show you how to use android.os.CountDownTimer to implement a verification code retrieval function.

android.widget.Chronometer is an android provides timer component.It is also extends android.widget.TextView. So you can use a lot of TextView’s xml attributes and methods. But this article will show you examples about how to use Chronometer self owned attributes and methods.

Android provides three clock widgets that you can use to implement a clock. They are android.widget.AnalogClock, android.widget.DigitalClock and android.widget.TextClock. The AnalogClock and DigitalClock class have been deprecated since Android SDK version 1.7, but they can still be used. TextClock class is recommended.

android.widget.ToggleButton class is used to implement the toggle button in the android application. This article will show you two examples of how to use it.

android.text.SpannableString is a character sequence type class. You can use it as a String object in android TextView. But SpannableString can make TextView content more colorful and diverse. This article will show you examples about how to use SpannableString with TextView.

android.widget.MultiAutoCompleteTextView class is used to implement multiple auto-complete input text control in android applications. It behaves similar to the class android.widget.AutoCompleteTextView, the difference is that it can let you input text with autocomplete function multiple times. Each text in the input text box is separated by a specified token string.

There are a lot of auto-complete scenarios in the android app. For example, when you use a search engine, you input some characters in the search box then a list of search keywords will pop up. It is not difficult to achieve. This example will show you how to do this use android.widget.AutoCompleteTextView component.

The CheckBox object is a widely used UI component in android applications. android.widget.CheckBox is the java class that implements the checkbox in android. This article will show you an example of how to use this class and how to use the OnCheckedChangeListener to listen to the checkbox selection change event.

The android.widget.RadioButton class is used to implement the radio button UI component in android applications. The android.widget.RadioGroup class is used to group multiple android.widget.RadioButton objects into one group. Then you can get user selected radio button and it’s values.