android app development tutorial beginner pdf

(); Return "error|" +e.getmessage (); } catch (IOExceptione) {e.printstacktrace (); Return "error|" +e.getmessage (); }} public class MyFont implements Fontprovider {private static final String Font_path = "/system/fonts/droi Dsansfallback.ttf "; private static final String Font_alias = "My_font"; Public MyFont () {fontfactory.register (Font_path, Font_alias); } @Override Public Font getfont (string fontname, String encoding, Boolean

IOS 9 app development tutorial-custom app icons and real-machine testingIOS 9 app development tutorial-custom app icons and real-machine tes

, data); if (requestcode==10) {Toast.maketext (this, "photo successful", 0). Show (); }if (requestcode==20) {Toast.maketext (this, "camera success", 0). Show (); }} public void video (View v) {Intent Intent = new Intent (); Intent.setaction (mediastore.action_video_capture); Intent.putextra (Mediastore.extra_output, Uri.fromfile (New File (Environment.getexternalstoragedirectory (), " HAHA.3GP "))); Intent.putextra (mediastore.extra_video_quality, 1);//Set the video quality Sta

Reprint this article please indicate the source: http://blog.csdn.net/qq_32059827/article/details/52203347 Click to open the linkBefore customizing the progress bar, learn about the use of shape.First, create a new drawble directory below the Res directory (it will be simple if you customize the state selector)Second, create a new Android.xml file, Find shape, click FinishWe can see that the shape attribute is not many, as follows:Now step through the common use of attributes:1, (1), Radius: Rep

Blocke.printstacktrace ();} catch (IOException e) {//Todo auto-g Enerated catch Blocke.printstacktrace ();} return sb.tostring ();} /** * MD5 encryption of strings passed in * @param str * String to be encrypted * @return * string Md5 encrypted result */public static string MD5 (String str) {Stringbuilde R sb = new StringBuilder ();//String container try {//Get MD5 dongle. public static MessageDigest getinstance (string algorithm) returns the implementation of the specified digest algorithm. Th

Hybrid APP is the acronym for mixed-mode applications, with the advantages of Native app and web App two models, low development cost, and a cross-platform feature of web technology. At present, the middleware-based mobile development framework is known as the Hybrid

)// Unchecked to the selected state is performed here: {System.out.println ("swim is checked");} else//is executed here by the selected state to the unchecked state: {System.out.println ("Swim is Unchecked");}}); runbox.seToncheckedchangelistener (New Compoundbutton.oncheckedchangelistener () {@Overridepublic void oncheckedchanged ( Compoundbutton Buttonview, Boolean isChecked) {//TODO auto-generated method stubif (isChecked) {System.out.println ("Run is checked ");} Else{system.ou

representing 256 colors Requires 256 numbers: 0-255,0000 0000-1111 1111 Use a binary number of length 8 Consumes 8/8=1 bytes per pixel Total size = Total pixels of the picture * the size of each pixel occupies =320000*1=320000 bytes 24-bit bitmap: Each pixel occupies 24 bits, which is "3 bytes", so it is called a 24-bit bitmap. Total size = Total pixels of the picture * the size of each pixel occupies =320000*3=960000 bytes Another way

Before backing up the text message generated by the generation of XML is manually spelled, there is a problem: when the text message in the presence of Define a layout file for the activity, with the knowledge simply adding a button:See the code in the main activity as follows:Package Com.itydl.xmlserializer;import Java.io.file;import Java.io.fileoutputstream;import java.io.IOException; Import Java.util.arraylist;import Java.util.list;import Org.xmlpull.v1.xmlserializer;import Com.itydl.createxm

Android App for H5 page Nesting development authentication method: 1, after installing the app, enter the handset developer option . 2, the "Show layout boundary" switch open. 3, you will find that your screen has a lot of rules and regulations, these are based on the traditional

VS 2015 cross-platform mobile app configuration tutorial, vs2015 development tutorial Preface In order to use VS 2015 to develop cross-platform mobile apps, VS 2015 has been installed many times and has encountered many pitfalls before it finally figured out how to configure C # To develop mobile apps normally, we will

Chrome Google browser install run Android app tutorial Google launched the app Runtime (app Runtime for Chrome, ARC) on Chrome OS last September, allowing Android apps to run on Chrome OS. Now, Google has brought arc to the Chrom

The main topics in this section include the Android Desktop widget, the app Widget Development Guide, and a simple example of how to visually explain the app widget.The concept of widgets, app widgets, Web appsThe original concept of the widget was a 98 Apple engineer named

Introduction: This article records a machine friend-Xiao Xu based on the smart Cloud app open source framework, starting from the building of the Java environment, teaching you to download the JDK, download Androidstudio, to control the device page, etc., complete a full version of the Android app development process.