How to increase the size of the title bar attached to the top of any screen in android
This is android title bar and you can not increase its size. It you need this feature in your application then you can create a custom title bar.
Remove the this default Title bar by using this code in your activity..
getWindow().requestFeature(Window.FEATURE_NO_TITLE);
or this in your manifast inside your activity tag.
android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
and then create a custom title bar in your XML file.
EDIT:
this solution was for API < 11 ... now we have ActionBars
EDIT: first i answer this
Create custom titlebar in Android
EDIT: I'm adding this because I think Sujit gave the wrong answer.
To increase the size of the title bar you will need to add file with this content to res/values
<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="CustomTheme" parent="android:Theme">
<item name="android:windowTitleSize">50dip</item>
</style>
</resources>
in AndroidManifest.xml
file
<activity android:theme="@style/CustomTheme" android:name=".Activity" android:label="AppName">
...
</activity>