Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import android.content.Context;

import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;

import java.io.File;

import java.util.List;

public class Main {
    /**
     * To check whether the apk file has installed.
     * 
     * @param  context the context
     * @param  apkFile the apk file
     * @return         true if installed, otherwise return false
     */
    public static boolean isApkInstalled(Context context, File apkFile) {
        if (context == null || apkFile == null || !apkFile.exists()) {
            return false;
        }

        PackageManager packageManager = context.getPackageManager();
        List<PackageInfo> installedPkgs = packageManager.getInstalledPackages(0);
        PackageInfo pkgInfo = getApkInfo(context, apkFile);
        if (pkgInfo != null) {
            String pkgName = pkgInfo.packageName;

            for (PackageInfo info : installedPkgs) {
                if (pkgName.equals(info.packageName)) {
                    return true;
                }
            }
        }

        return false;
    }

    /**
     * Get the package info of the specified apk file.
     * 
     * @param  context the context
     * @param  apkFile the apk file
     * @return
     */
    public static PackageInfo getApkInfo(Context context, File apkFile) {
        if (context == null || apkFile == null || !apkFile.exists()) {
            return null;
        }

        PackageManager packageManager = context.getPackageManager();
        PackageInfo pkgInfo = packageManager.getPackageArchiveInfo(apkFile.getAbsolutePath(),
                PackageManager.GET_ACTIVITIES);

        return pkgInfo;
    }
}