Android Tutorial

Android Tutorial 197

Using the AnalogClock

The AnalogClock control is a dial-based clock with a basic clock face

with two hands, one for the minute and one for the hour. It

updates automatically as each minute passes. The image of the

clock scales appropriately with the size of its View. Here is an

example of an XML layout resource definition for an AnalogClock

control:

<AnalogClock
android:id=”@+id/AnalogClock01”
android:layout_width=”wrap_content”
android:layout_height=”wrap_content” />

The AnalogClock control’s clock face is simple. However you can set

its minute and hour hands. You can also set the clock face to

specific drawable resources, if you want to jazz it up. Neither of

these clock controls accepts a different time or a static time to

display. They can show only the current time in the current time

zone of the device, so they are not particularly useful.

Providing Users with Options and Context Menus

You need to be aware of two special application menus for use

within your Android applications: the options menu and the

context menu.

Enabling the Options Menu

The Android SDK provides a method for users to bring up a menu

by pressing the menu key from within the application. You can use

options menus within your application to bring up help, to navigate,