introducing myself

[nikoo56]

Hi ,

I am introducing myself.
I am a programmer that recently start to develop an Android app and need some helps.

 

[nikoo56]

How make Android app works with all Android versions?

I have created an Android app and signed and packaged it. That is version of Android that I have used in AndroidManifest:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="fa.test.NM"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk android:minSdkVersion="17" />

When I install the app on the latest Android it is working because the version matches the manifest. But when I try to install with older version of android it gave me an error: &#8221;There is a problem parsing the package&#8221; . How I can make my Android app works in all Android versions and if how I can change the version now that I have developed the app.

Thanks,