how to start learning android programming

(Transferred from: http://wenku.baidu.com/view/af39b3164431b90d6c85c72f.html)Xi. Android Learning Day-start of projectAndroid Knowledge Point learning is overFrom today on a project (MP3 player) to become more familiar with the various points of knowledge learned before ~A simple MP3 player that should include the foll

find that the task ID has changed. This startup mode works similarly to the browsers we use,When accessing a browser in multiple programs, if the current browser is not open, the browser opens, otherwise it will be accessed in the currently open browser.This mode saves a lot of system resources because he can guarantee that the activity object to be requested only exists in the current stack.http://blog.csdn.net/u012702547/article/details/49529825Three, stone scissors cloth small GameQianfeng-

In fact, very early wanted to write a blog, has been lazy until now.Learning Android is not the beginning of today, probably in February after the beginning of the year, bought I think also can book "Android from Beginner to proficient", spent less than one months of time, the front of the basic part of the reading, but still feel what do not know, why? Because it is so strange to him, I do not understand i

Let's start by learning how to define layouts using XML code.In the current Activity_quic.xml file, the default activity layout is defined. The default layout of the app often changes, but the XML layout file is always similar to the code listing 1-1 file.RelativelayoutXmlns:android= "Http://schemas.android.com/apk/res/android"Xmlns:tools= "Http://schemas.android

", at"Lishang", "Ligang", -"Chengcheng", "Chengzhi", -"Wangwu" - }; - - //Initializes a drop-down data source adapter to match the input inArrayadapterNewArrayadapter( - This,//Current Object toAndroid. R.layout.simple_list_item_1,//This is a system with its own layout +Dsr//Data Source - ); the * //to set the Autocompletetextview control's matching device $ Mactextview.setadapter (adptr);Panax Notoginse

[Book Note: Android game programming starts from scratch] 12. Game Development BASICS (Canvas), Learning android from scratch 1. Canvas Canvas of the Canvas class encapsulates graphics and image painting. Common functions of this class are described as follows: DrawColor (int color) Purpose: Draw a color-covered canva

Let's get a helloword today and stick to learning a little bit every day.development tool Eclipse, complete the following results.Strings.xml: This file modifies the text message displayed on the interfaceMain.xml: The role of this file is page layoutThis example:Strings.xmlMain.xmlandroid:orientation= "Vertical"Android:layout_width= "Fill_parent"android:layout_height= "Fill_parent">Android:layout_width= "Fill_parent"android:layout_height= "Wrap_conte

PackageCom.example.helloworld;2 3 4 Importandroid.app.Activity;5 ImportAndroid.os.Bundle;6 ImportAndroid.view.View;7 ImportAndroid.view.View.OnClickListener;8 ImportAndroid.widget.Button;9 ImportAndroid.widget.TextView;Ten One A //This class directly implements the interface Onclicklistener - Public classMainactivityextendsActivityImplementsOnclicklistener { - the PrivateButton btn1;//declaring button Objects - PrivateTextView TV1;//Declaring a text box object - - @Overrid

0]thenecho "$0:you must give one integers!" Exit 1fiif [$1-gt 0]then echo "$ is positive" elif [$1-lt 0]then echo "$ is negative" elif [$1-eq 0]then Remember ' [' To add a space, '] ' before the space Ah ah ah.There is a prior release:Sourcehttp://linux.vbird.org/linux_server/0250simple_firewall.phphttp://tille.garrels.be/training/bash/Http://freeos.com/guides/lsst/index.htmlHttp://www.hlevkin.com/Shell_progr/hellobash.htmhttp://www.cyberciti.biz/faq/bash-for-loop/Http://tldp

as explicit type conversions, which can overflow or lose precision, and pay attention to the range of data.Iv. Java Annotations1.//A single comment, all characters ending to the bank are ignored by the compiler2./**/multiple lines of comment, all characters between/**/are ignored by the compiler3./***/document comments, Java-specific, all characters between/***/are ignored by the compiler. You can use Javadoc to extract the comments from the Java original program to form an HTML page (only writ

:#Filename:claaorinsvarclassanimal:population=0def __init__(self,name): Self.name=name Animal.population+ = 1defSayhi (self):Print("My name is"+self.name)defHowmany ():#This function does not pass arguments to self #print (' We have ' + animal.population + ' animals ') #use the above code after the program error "Print (' We have ' + animal.population + ' animals ') #Typeerror:must is str, not int " #Animal.population cannot automatically connect to strings, and in Java it can be automatical

ongesturelistener, it does not have a description, who can understand the relationship and difference between onlongpress and Onshowpress,onscroll and onfling before attempting to do it continuously? Google really needs to do a big surgery on the documentation. But fortunately, after my repeated attempts. These gestures are defined from a personal point of view.Press (Ondown): Just the moment the finger touches the touch screen, it is the touch of the moment.Throw (onfling): The finger moves qu

This article illustrates the simple learning example of Android programming view. Share to everyone for your reference, specific as follows: View, which is a superclass of Android, contains almost all of the screen types. Each view has a canvas for drawing, and the canvas can be arbitrarily extended. The view is cust

Android provides a rich set of UI components, all of which are inherited from the view class , and the view component is very similar to the swing programming JPanel, which represents a blank rectangular area. Android uses the "combo" design pattern to Design view and ViewGroup:ViewGroup is a subclass of view, so viewgroup can also be used as a view . Inst

Month: ==! ）In the second window, clear the option to create a custom launch icon (created custom launcher icon) that has been checked. The Geoquiz app only needs to use the default startup icon. Confirm that the Create Activity option is selected. Such as:Figure 1-4 Configuration ItemsClick Next.The window shown in 1-5 asks what type of activity you want to create. Select the blank Activity.Figure 1-5 Creating a new activityContinue to click Next.In this window, the named activity sub-class is

"Android:text= "@string/question_text"/> LinearLayout android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"android:orientation= "Horizontal" > Button android:id = "@+id/true_button"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:text= "@string/true_button"/> Button android:id = "@+id/false_button"Android:layout_width= "Wrap_content"Android:layout_height= "Wrap_content"Android:text= "@string/false_button"/> Code Listing 1-6: Adding a Resource I

The first app to be written right now is Geoquiz, who can test the user's geographic knowledge. The user answers the question on the screen by clicking the True or False button, Geoquiz can instantly feedback the answer correctly or not.Figure 1-1 shows the result of the user clicking the false button.　　1.1 Application Basics　 The Geoquiz application consists of an activity and a layout.　　activity is a specific instance of the activity class in the Android