How to change height and width of Switch in Android
here is a small example how to change your swicth width, i hope it will help some one..
1)Use ur color for thumb (color_thumb.xml)
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle">
<size android:height="40dp" />
<gradient android:height="40dp" android:startColor="#FF569BDA" android:endColor="#FF569BDA"/>
2)gray color for track (gray_track.xml)
shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"
>
<size android:height="40dp" />
<gradient android:height="40dp" android:startColor="#dadadada" android:endColor="#dadadada"/>
3)Selector for thumb (thumb.xml)
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_enabled="false" android:drawable="@drawable/gray_track" />
<item android:state_pressed="true" android:drawable="@drawable/color_thumb" />
<item android:state_checked="true" android:drawable="@drawable/color_thumb" />
<item android:drawable="@drawable/gray_track" />
4) Selector for track (track.xml)
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_focused="true" android:drawable="@drawable/color_thumb" />
<item android:drawable="@drawable/gray_track" />
and finally in switch
use
android:switchMinWidth="56dp"
android:thumb="@drawable/thumb"
android:track="@drawable/track"
final int switchWidth = Math.max(
mSwitchMinWidth,
2 * mThumbWidth + paddingLeft + paddingRight);
final int switchHeight = Math.max(trackHeight, thumbHeight);
mSwitchWidth = switchWidth;
The code above is method onMeasure()
in class Switch, set android:switchMinWidth
can not change the width properly,
the only easy way is that change field mSwitchWidth
by reflection dynamically:
try {
Class clazz = Class.forName(Switch.class.getName());
final Field switchWidth = clazz.getDeclaredField("mSwitchWidth");
if (switchWidth != null) {
switchWidth.setAccessible(true);
int width = widthWhateverYouWant;
switchWidth.set(switchClassInstance, width);
setMeasuredDimension(width, getMeasuredHeight());
return;
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (NoSuchFieldException e) {
e.printStackTrace();
}
Do not forget setMeasuredDimension(width, getMeasuredHeight());
,
because measuredWidth
of Switch is not base on field mSwitchWidth
.
I guess it's not difficult to change height since you know how to change width :)
add this android:switchMinWidth="56dp"
and try
<Switch
android:id="@+id/plug_switch"
android:layout_width="120dip"
android:layout_height="10dp"
android:maxHeight="10dp"
android:thumbTextPadding="25dp"
android:switchMinWidth="56dp"
android:layout_below="@id/plug_graph_layout"
android:layout_centerHorizontal="true"
android:minWidth="100dp"