best android app development tutorial

Mobile app development is also the category of technology innovation in the information technology course, so it may be confusing to record some notes in the personal Development app, so choose to write by point.1, network communication Protocol, I prefer HTTP, because familiar, okhttp very useful, but I use a simpler

Next [APP] Android Development Note 0025. Packaging with Ant release1) Make key file Release.keystore (*.keystore)　　Keytool-genkey-v-keystore "Release.keystore"-alias "release"-keyalg "RSA"-validity "10000"It is important to note that:-keystore "Release.keystore" key file name-alias "Release" Alias　　2) manually edit the Ant.properties　　key.store=./release.keystor

0 Fundamentals Android Development: Bluetooth chat room App Third speaking3.1 ImageView, ImageButton control specific explanation3.2 GridView Control specific explanation3.3 Simpleadapter Adapter Specific explanation3.4 Event Listener: Onitemclicklistener3.5 entering and displaying emoji imagesWatch Online:http://www.3g-edu.org/news/video023.htmvideo Download:HTT

Android app development with Kotlin (III): extended functions and default values, kotlinandroid This is the third article about Kotlin. Original article title: Kotlin for Android (III): Extension functions and default values Link: http://antonioleiva.com/kotlin-android-exte

you want to understand the details, Baidu has a lot of information.Five. Android cross-process communication1. Broadcast and content Provider, here slightly.2.aidlThe use of aidl, a process as a server, a program as a client. Communication between them through the service. The server provides the calling interface, the client-bound service, and the method that invokes the server. Aidl supports normal data types, other data types are serialized and in

The Desktop component app widget is a practical function of Android. Although the development process is not very difficult, there are many steps and a little trouble. The following key steps are summarized to facilitate future use. The project is packaged to facilitate future use. Create an android project and follow

Currently, Jimu mainly provides simple development tools for Android applications, and its service objects are not limited to people who do not understand Java and other programming languages, developers can also use Jimu tools to quickly customize appropriate App modules. Linkton Ye, founder of Jimu, said: "Although a large number of

Yesterday, suddenly asked to take photos and videos to obtain the time, to get accurate time is generally the time to press the shutter button or press the Stop button to generate the file is more accurate.Because, if you click on the open app to take the photo or video button to get the time, it is necessary and real photo or video time error. Because there is time to load the camera, the focus time, and, after the user enters the photo page, it is p

system font size. If the font is in DP, the system font size is changed, and the font size of the interface's view does not change.For example: for the following code, two TextView in a vertically distributed linearlayout, the first TextView uses the SP as the unit of the font, and the second TextView uses the unit of the DP as the font:[HTML]View PlainCopy print? span style="Font-family:microsoft yahei;font-size:18px;" >TextView android:text="@string/hello_world" android:layout_

Implementation of button response IOS9 Implementation of button response in IOS 9 app development tutorial iOS9The main button is to implement the user interaction, that is, to implement the response. The way buttons implement responses can be divided into two different types of buttons: one is the response of the edit interface to add a button implementation, an

Android App Development-Wizards CSDN Blog client's get comment listThe previous blog introduces the details of the blog's Business logic implementation, this blog introduces the last feature of the CSDN blog client, to get a list of comments, the implementation of this feature is not the same as the previous access to the article list and the detailed content of

communication methodscurl_setopt ($ch, Curlopt_ssl_verifypeer,false);//Send template SMS//need to encode value$mobile= 12345678910;//phone number to receive SMS$code= Getrandomcheckcode ();//the verification code to be sent$data=Array( ' tpl_id ' = 5,//here is the template ID, default is 1 when not set' Tpl_value ' =UrlEncode(' #code # '). ' = '.UrlEncode($code) .‘ '.UrlEncode(' #company # '). ' = '.UrlEncode(' Company name ') .‘ '.UrlEncode(' #

Introduction to the development of Android handheld terminal PDA Inventory app softwareThe software needs to automatically identify my imported TXT format or the excl format of the inventory table, and then automatically generate a duplicate disk data, do AB, the interface needs to display the total quantity, the number of items, barcode, code, product name, spec

Android App Development-Little Witch CSDN blog Clientjsoup Chaptertwo weeks from the previous blog, the wizard also thought that I am sorry, because in busy to do another project, almost no empty, this wizard will leave the rest of the blog in the National Day to fill up. This blog will show you how to use the Jsoup library to parse our pages, and how to analyze

In Android development, if you use a database to store data, it is inevitable to look at the contents of the database, but for the root of the real machine, it is not so easy to view the database, if only to view the database and then put the phone root, a little more than the loss, So the following will provide a way to view the database without root, for the needs of friends reference. 1. Enter the direct

Linearlayoutmanager (Mrecyclerview.getcontext ())); Mrecyclerview.setadapter (New Recyclerviewadapter (Getactivity ())); } public class Recyclerviewadapter extends recyclerview.adapteryou can see that the real fragment layout is actually a recylerview. Fragment_activity_new.xml layoutFragment_activity.xml layoutNote that, if there is a ListView inside the Fragment_activity.xml, the layout of the ListItem must be linearlayout, and the height of the ListView must be calculated, otherwise the e

); } Catch(FileNotFoundException e) {e.printstacktrace (); } Catch(IOException e) {e.printstacktrace (); } }; }.start (); }Determine if the service is running Public Static Booleanisservicerunning (Context context,string serviceName) {BooleanIsRunning =false; //determine the state of service in operation, ActivitymanagerActivitymanager am =(Activitymanager) Context.getsystemservice (Context.activity_service); //get all the services running on your

(c) 2015 Cc.huanyouwang. All rights Reserved.//import Uikitpublic class statusviewmodel:nsobject{func requeststatuslist (view:UIView!,blk:Succ Essblock) {var af = afrequest (Mainurl:kgetstatusurl, paramdict:kparamdic) {(obj), void! in var dico = obj as dictionaryCall ViewModel display data in 7.TableViewController controllertableviewcontroller.swift//swiftdemo////Created by Mbinyang on 15/4/8.//Copyright (c) 2015 Cc.huanyouwang. All rights Reserved.//import Ui

Original address: http://www.javacodegeeks.com/2014/05/simple-tips-to-secure-android-app.htmlHttp://developer.android.com/training/articles/security-tips.html Android already has security features built into the operating system that significantly reduce Application security issues frequency and impact , but as an application developer , we also need to be aware of security issues when developing applicat

through the StartService method Background process: a process that has an invisible activity (the OnStop method is called) Empty process: No process with any active app components Status of Phone recorder phoneCall to detect the status of the phone, using the broadcast mechanism. Idle state (phone hangs up) TelephonyManager.CALL_STATE_IDLE Ringing status TelephonyManager.CALL_STATE_RINGING Off-hook status (in call) Te