Android Edit text and Button widget appears blurry in tablet - android

HI stackoverflow friends,
On recent days I am facing an issue in android layout. I have a made an app that needs to run on android phones and tablet. So I made independent layouts for phone and tablet as descrided in android developer document. But my edittext and button appears a blurry in tablet but it works perfectly in phones up to 2.3 .My design is same in both.During design time ,graphical layout show the correct as I need. On running on emulator and on actual device it appears as below. But It perfectly ok in phones(2.3).
Tablet layout.
Phone layout as I need
I have noticed that when my layout screen becomes large it becomes blurry feel.
I couldn't figure out what mistake happened to me.
UPDATED
In my Manifest.xml I have added
<uses-sdk android:minSdkVersion="4"
android:targetSdkVersion="13" />
<supports-screens
android:smallScreens="false"
android:normalScreens="true"
android:largeScreens="true"
android:xlargeScreens= "true"
android:anyDensity="true" />
But no effect.
Any help would be appreciable.

It might be in compatibility mode. From the documentation,
"...if your application does not successfully follow the guide to
Supporting Multiple Screens, then it might encounter some rendering
issues on larger screens."
The manifest needs to be adjusted to disable compatibility mode.
http://developer.android.com/guide/practices/screen-compat-mode.html

I figure out my issue. By setting theme in application element
android:theme="#android:style/Theme" in manifest.xml file.
<application
android:label="#string/app_name"
android:icon="#drawable/logo"
android:vmSafeMode="false"
android:theme="#android:style/Theme">
Thanks to all for supporting me.

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After a long time of searching for the cause i've found, that the problem is caused by this entry in the AndroidManifest.xml:
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P.S
I should mention, that this may be device specific, since i have a Samsung Galaxy S phone (i9000) but with android 4.3 flashed to it (don't judge me on that :D)
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Adding
<supports-screens android:resizeable="true"
android:smallScreens="true"
android:normalScreens="true"
android:largeScreens="true"
android:anyDensity="true"/>
to my manifest, solved my problem...
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Without knowing how it's distorted it's tough to say, but you probably need something like:
<supports-screens android:anyDensity="true"
android:largeScreens="true"
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android:smallScreens="true"
/>
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android:normalScreens="true"
android:largeScreens="true"
android:anyDensity="true" />
<uses-sdk android:minSdkVersion="4"/>
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