Basic Android development tutorial-send a text message by phone

Call and send a text message demo CopyCode The Code is as follows: public class mainactivity extends activity { Edittext mphonenum, mmessage; @ Override Protected void oncreate (bundle savedinstancestate ){ Super. oncreate (savedinstancestate

Details about android web service calling (cxf) instance applications

Google provides support for the development of Web Service for the ndroid platform, and provides the Ksoap2-android 1. You can directly log on to the supervisor to download the package; My current is

Serial programming principles and implementation methods for Android Development

When talking about serial programming, we have to mention JNI. we have to mention the file descriptor class in Java API: FileDescriptor. Below I will analyze and explain some knowledge points and source code of JNI, FileDescriptor, and serial port

Principle and usage of detecting Cursor leakage in Android

Introduction: This article describes how to detect the Cursor leakage in Android and how to use it. It also points out several common error examples. Some leaks are hard to detect in the code, but exceptions will inevitably occur after the program

Comprehensive summary of services in Android

1. Service Type By location: Category Differences Advantages Disadvantages Application Local) The service is attached to the main process, Services are attached to the main process rather than independent

Android dialog border removal white border Implementation ideas and code

Create a styles. xml file in the values directory and write the following code: Copy codeCode: Code highlighting produced by Actipro CodeHighlighter (freeware)> When calling, use the AlerDialog interface class.

Android calculates the resolution, pixel, density, screen size, and DPI of the pad or mobile phone.

Basic mobile phone resolution knowledge (DPI, DIP computing) 1. terms and concepts Terms Description Remarks Screen size) It refers to the actual physical size of the mobile phone, such as the commonly used 2.8 inch, 3.2

Intel HAXM accelerates the running of Android simulators.

The Android simulator has always been known for its slow running speed. This article describes how to use Intel HAXM technology to accelerate the Android simulator so that the simulator runs more slowly than a real machine, completely solving the

Android enables GPS navigation and obtains location information. return null. Solution

Recently, I am working on an Android project and need to use GPS to obtain location information. I checked the information from the API and found that obtaining location information only requires an extremely simple sentence: Copy codeThe Code is as

Android uses Intent to transmit data Implementation ideas and code

Intent is a very important concept in Android. Like the intention (Intent, purpose) of this term, the role of this class in Android is to call a build to do something, for example, startActivity is used to start an Activity, startService is used to

Configuring a good Android simulator makes you no longer so disappointed with the simulator

The Android simulator is like this by default.: The most prominent problem on the screen is obviously its ugly interface. The simulator window occupies a huge space on the screen and has a screen keyboard for no reason. If you have never used a

Implementation principle and code of the menu bar at the bottom of Android imitation UC

Related Links: Menu Bar implementation at the bottom of Android After reading ViewPager recently, I just wanted to make such a Demo. Of course, I also referred to the grid menu in the examples of experts and started to use the custom imgBtn,

Collection of commonly used Android commands (images and texts for beginners)

Hello everyone, today we are going to talk about the collection of commonly used naming commands in android development. Android commands will inevitably be used in our development. Some commands are indeed very useful. This is especially true for

Android manages fragments in an Activity

FragmentManager To manage fragments in an Activity, you need to use FragmentManager. To get it, call the getFragmentManager () method in the Activity. Because the FragmentManager API was introduced in Android 3.0, that is, API level 11, for earlier

Basic knowledge about Android Fragment (Graphic Introduction)

Fragment Android introduced Fragment in Android 3.0 (API level 11. You can think of Fragment as a module in the Activity. This module has its own layout, lifecycle, and processing of its own input. The Fragment module can be loaded or removed when

How to use custom Toast for android

The default Toast for Android is very simple and easy to use. However, sometimes our program uses the default Toast instead of the overall style of the program. In this case, we need to customize Toast to make it more integrated with our

Basic android development tutorial-read and write SharedPreferences

Copy codeThe Code is as follows: public class MainActivity extends Activity { @ Override Protected void onCreate (Bundle savedInstanceState ){ Super. onCreate (savedInstanceState ); SetContentView (R. layout. activity_main ); } Public void onClick

Basic android development tutorial-file storage function implementation

File Storage: Copy codeThe Code is as follows: public class MainActivity extends Activity { EditText mname, mage; TextView mtv; @ Override Protected void onCreate (Bundle savedInstanceState ){ Super. onCreate (savedInstanceState ); SetContentView (R.

How does Android prevent the apk program from being decompiled (respect for labor results)

As an Android app developer, you have to face an embarrassing situation: applications that have worked hard to develop can be decompiled easily by others. Google also seems to have discovered this problem. From SDK2.3, we can see that there is a

Basic android development tutorial-xml file parsing in three ways

1. sax Method Copy codeThe Code is as follows :/** * Use sax for parsing */ Public class SaxParse { /** * Sax Parser */ Private SAXParser parser; Public SaxParse (){ Try { SAXParserFactory f = SAXParserFactory. newInstance (); Parser = f.

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