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

public class Main {

    public static boolean judgeFirstIn(Context context) {
        SharedPreferences preferences = context.getSharedPreferences("isFirst", Context.MODE_PRIVATE);
        boolean isFirst = preferences.getBoolean("isFirst", true);
        int versionCode = preferences.getInt("versionCode", 1);
        if (isFirst || versionCode < getVersionCode(context)) {
            preferences.edit().putBoolean("isFirst", false).commit();
            preferences.edit().putInt("versionCode", getVersionCode(context)).commit();
        }
        //        return isFirst;
        return false;
    }

    public static int getVersionCode(Context context) {
        PackageManager packageManager = context.getPackageManager();
        PackageInfo packageInfo = null;
        try {
            packageInfo = packageManager.getPackageInfo(context.getPackageName(), 0);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        return packageInfo.versionCode;
    }
}