Java tutorial
//package com.java2s; import java.io.File; import android.content.Context; import android.content.Intent; import android.net.Uri; public class Main { public static boolean installApk(Context context, String fileName) { File apkfile = new File(fileName); if (!apkfile.exists()) { return false; } Intent intent = new Intent(Intent.ACTION_VIEW); intent.setDataAndType(Uri.parse("file://" + apkfile.toString()), "application/vnd.android.package-archive"); context.startActivity(intent); return true; } }