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page.title=Toggle Buttons
page.tags=switch,togglebutton
@jd:body
<div id="qv-wrapper">
<div id="qv">
<h2>In this document</h2>
<ol>
<li>
<a href="#ClickListener">Responding to Button Presses</a>
</li>
</ol>
<h2>Key classes</h2>
<ol>
<li>{@link android.widget.ToggleButton}</li>
<li>{@link android.widget.Switch}</li>
<li>{@link android.widget.CompoundButton}</li>
</ol>
</div>
</div>
<p>A toggle button allows the user to change a setting between two states.</p>
<p>You can add a basic toggle button to your layout with the {@link android.widget.ToggleButton}
object. Android 4.0 (API level 14) introduces another kind of toggle button called a switch that
provides a slider control, which you can add with a {@link android.widget.Switch} object.</p>
<p>
If you need to change a button's state yourself, you can use the {@link
android.widget.CompoundButton#setChecked CompoundButton.setChecked()} or
{@link android.widget.CompoundButton#toggle CompoundButton.toggle()} methods.
</p>
<div style="float:left;width:200px">
<img src="{@docRoot}images/ui/togglebutton.png" alt="" />
<p class="img-caption"><em>Toggle buttons</em></p>
</div>
<div style="float:left;width:200px;margin-top:24px">
<img src="{@docRoot}images/ui/switch.png" alt="" />
<p class="img-caption"><em>Switches (in Android 4.0+)</em></p>
</div>
<h2 id="ClickListener">Responding to Button Presses</h2>
<p>
To detect when the user activates the button or switch, create an {@link
android.widget.CompoundButton.OnCheckedChangeListener} object and assign it
to the button by calling {@link
android.widget.CompoundButton#setOnCheckedChangeListener
setOnCheckedChangeListener()}. For example:
</p>
<pre>
ToggleButton toggle = (ToggleButton) findViewById(R.id.togglebutton);
toggle.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
// The toggle is enabled
} else {
// The toggle is disabled
}
}
});
</pre>
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