Android

Preface I have been studying Android for a while. In order to further understand how Android applications are designed and developed, I decided to study several open-source Android applications in detail. From some open-source applications to absorb

In the previous section, we used DOM to parse XML documents. This method conforms to our daily thinking and is easy to use. However, it directly transfers documents to the memory, which is relatively memory-consuming. Here we can use another method

Recently, there was a need to get the MAC address of the Android device on the JNI layer. Google circled it and did not see the implementation method. So I had to write it myself. The basic idea is to call the android Java-layer API through JNI to

This article briefly analyzes how build. Prop is generated. Android build. the prop file is a variety of properties (LCD density/Language/Compilation Time, etc.) collected during Android compilation .), after compilation, the file is generated in

Before leaving the lab, I posted some basic knowledge I learned this afternoon (what did I do this morning? I am busy restoring data ): 1. LastProgramDuring packaging, files in the res folder are packaged only when used, and files in the assets

This article isThis seriesArticleThe first article only aims to write down the design and implementation process of the android sub-item. This article will first introduce the design of the Connected View project, as well as the relevant content and

1. Error:Build failedD: \ workspace \ Ganji \ build. xml: 144: the following error occurred while executing this line:D: \ workspace \ Ganji \ build. xml: 271: Unable to delete file D: \ workspace \ Ganji \ TMP \ proguard \ TMP. JarSolution:A

In Android, the screen length and width are obtained.CodeBut the results do not match the actual results. For example, if my mobile phone is i9000 and the screen size is 480 * 800px, the result is 320*533. The results were unreliable, so I wrote a

The iPhone's icon design is so simple that the iPhone's screen is only 320x480 pixels, soProgramNo adaptability issues. Android Before studying the android icon design, it is necessary to first understand how the android interface adapts to a

The uninet and cmnet are indeed the same. They use the direct connection mode of the internet, and do not need to set proxy or proxy. In my G1, add the APN, just fill in the name, and then fill in the uninet In the APN. Only, and must be set so that

Import android. app. activity; import android. widget. imageview; import android. widget. relativelayout; import android. widget. textview; @ suppresswarnings ("UNUSED") public class syncstatuspanel extends relativelayout { Private class

Asynctask solves the android UI congestion problem. We usually develop android Program In case of processing time-consuming tasks, such as database operations accessed by I/O, network access, and other issues, the UI is suspended. This problem can

In Android, services run in the background, with the same level as activity. Since the service is a service running in the background, it is invisible and has no interface. You can start a service to play music, record changes in your location, or

First, let's look at a reference: Aremoteviews object (and, consequently, an app widget) can support thefollowing layout classes: * Framelayout * Linearlayout * Relativelayout   Andthe following widget classes:   * Analogclock *

In section 1, we use handler, thread/runnable, URL, httpurlconnection, and so on to asynchronously download network images. Then the asynctask method is changed in section 2. Then we will apply other methods in this Section. This method is a bit

I. Cause I have been hesitant to learn about Android or iOS development. I have never thoroughly understood the prospects of these two platforms, and I am unwilling to only look at the immediate interestsTherefore, I sent a Weibo post and asked my

ProgramFile /Chapter06_intent_category/src/COM/Amaker/test/mainactivity. Java Code Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Package com. Amaker. test;Import Android. App.

Application of various la s in Android and implementation of menu Effects Applications with various layout modes: framelayout, linearlayout, tablelayout, absolutelayout, and relativelayout Configure the context menu for the specified

Today, Bitmap is used many times. Bitmap is simply a Bitmap. You need to obtain image resources for some image processing operations.1. Related Concepts 1. Drawable is a printable object. It may be a BitmapDrawable, A ShapeDrawable, or LayerDrawable

Method 1 Timer and TimerTask (Java implementation) Public class timerTask extends Activity { private int recLen = 11; private TextView txtView; Timer timer = new Timer (); public void onCreate (Bundle savedInstanceState) { super. onCreate