Java tutorial
//package com.java2s; import android.content.Context; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; public class Main { public static boolean checkAPKState(Context context, String path) { PackageInfo pi = null; try { PackageManager pm = context.getPackageManager(); pi = pm.getPackageArchiveInfo(path, PackageManager.GET_ACTIVITIES); return pi == null ? false : true; } catch (Exception e) { return false; } } }