Finally found a solution for it, and it is pretty simple.
All you have to do is to add these lines into your AndroidManifest receiver:
<receiver android:name="com.dannywind.delphi.BootReceiver"
android:permission="android.permission.RECEIVE_BOOT_COMPLETED">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.HOME"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</receiver>
And then next time you open your app, the Android System will ask you whether application you want to make your homescreen.
Hope it works for you.