String url = "http://tiger-kfphone.com/"; 
Uri u = Uri.parse(url); 
Intent intent = new Intent(Intent.ACTION_VIEW, u); 
// intent.setData(u); 
// intent.setClassName("com.android.browser", 
// "com.android.browser.BrowserActivity"); 
startActivity(intent); 
finish();

<style name="Translucent_NoTitle" parent="android:style/Theme.Dialog"> 
<item name="android:windowNoTitle">true</item> 
<item name="android:background">#00000000</item> 
<item name="android:windowBackground">@android:color/transparent</item> 
<item name="android:colorBackgroundCacheHint">@null</item> 
<item name="android:windowIsTranslucent">true</item> 
</style>

<activity 
android:name="com.hklt.link.MainActivity" 
android:label="@string/app_name" 
android:theme="@style/Translucent_NoTitle" > 
<intent-filter> 
<action android:name="android.intent.action.MAIN" /> 
<category android:name="android.intent.category.LAUNCHER" /> 
</intent-filter> 
</activity>