vr application for android

Android applications are written in the Java programming language. The Android SDK tool compiles your code-along with any data and resource files-into a apk:android package, which is an archive file with an. apk suffix. An APK file contains all the content of an Android app, which is a file that is used by Android-base

As any mobile platform continues to develop and its applications are constantly improved, quality becomes crucial if development is successful. Today, users require that they decide to install Android applications on their own devices to respond quickly and with reasonable performance. If those applications fail to provide exciting features and stable user experience, they will soon be uninstalled. This article describes the top 10 key points for

and found that it is invalid. I used all the online statements in my program. The Code is as follows: Public void exitpro () {// kill the background service // mobile version agglog. log (TAG, "haitest013: exitpro build. version. release = "+ build. version. release); intent I = new intent (); I. setclass (this, myservice. class); this. stopservice (I); // kill application string packname = getpackagename (); activitymanager activitymgr = (activitym

This article focuses on the theoretical knowledge of the Android application signature, including: What is a signature, why the application is signed, how to sign the application, and so on . 1, what is the signature?If the problem is not in Android development, if it's in

/* (Start of program header annotation)* Copyright and version Declaration of the program* Copyright (c) 2011, a student from the computer College of Yantai University* All rights reserved.* File name: Database Application-query and modify a single record* Author: Lei hengxin* Completion date: January 1, August 14, 2012* Version No.: V1.0* Description of tasks and Solutions* Input description:* Problem description:* Program output:* End the comment in

We've learned how to invoke an activity in a single application of our own. However, one of the more important developments in Android is the use of intent to invoke other application activity. In particular, your application can invoke many "built-in" applications in the system. The so-called "built-in"

The Android system requires that all programs be installed with digital signatures. If no digital signature is available, the system will not install and run this program, whether it is a simulator or a real mobile phone. Therefore, before running the debugging program on a device or simulator, you must set a digital signature for the application. The Android sys

Running Android applications depends on two things: 1. Whether you have an actual Android device; 2. Whether you are using eclipse. This section describes how to install and run your applications on real devices and Android simulators. Before running your application, take a look at the following directories and files

Http://hi.baidu.com/fountainblog/blog/item/0dc1af7e714d9c210dd7dade.html Version control is an important part in the process of program upgrade/maintenance.You need to know the version of the application installed on the device and the versions that can be upgraded. Other applications-including other programs you release-need to query the system for the version of your application to determine the compati

MainActivity is as follows: [Java]Package cn. testapplicationname;Import android. OS. Bundle;Import android. widget. TextView;Import android. app. Activity;Import android. content. pm. ApplicationInfo;Import android. content. pm. PackageManager;/*** Demo description:* Obtain

I. Overview Sharedpreferences can be understood as a simple database that stores data in the system as files or reads data, however, it only stores some simple numeric pairs, such as key-values. If some applications need to save some simple data when they exit to restore the required data when they are opened again, sharedpreferences can be used. Ii. Requirements Write a simple application that requires the appli