Mobile Develop

1. With hardware acceleration, application Add android:hardwareaccelerated= "true" in Androidmanifest.xml. But this needs to be used on Android 3.0.2. Set cache properties in View. Setdrawingcache is true.3. Optimize your layout. Use the layoutopt

1)   run at Terminal  lsusb will find the following similar records: Bus 002 device 001: id 1d6b:0001 linux  Foundation 1.1 root hubBus 003 Device 001: ID 1d6b:0001  linux foundation 1.1 root hubbus 004 device 005: id 1219:0102                # This

Today we are going to write a super super simple player, using the android comes with the music player class MediaPlayer, the first one:It only realizes the basic function of the player, the interface does not do, because it is not the focus of

When you inherit the view control override control functionality, you often scroll through the contents of the control, and then you need to invoke one of the two methods of view content movement:View.scrollby (int x, int y) and smooth content

      HTML5 has a lot of new features to look forward to. One of the advantages of HTML5 is that it enables cross-platform game coding porting, and many companies are now using HTML5 technology on mobile devices. With the continuous enhancement of

Determine debug signature and release signatureThe idea is:You can get the signature information in the package signature object, there is a hashcode () method in the Signature object, which can be used to identify the signature object.At present, I

Four ways to store Android dataAs a finished application, data storage operations are essential. As a result, the Android system offers four ways to store data.are: Sharepreference, SQLite, Content provider, and file.Because the data is basically

FromStartActivity (Intent)Startactivityforresult (Intent, Requestcode)ToSetresult (ResultCode)Setresult (ResultCode, intent)BackOnactivityforresult (Requestcode, ResultCode, intent)Android Dev fragment call Startactivityforresult return error

[Go]eclipse android:a project with that name already exists in the workspace-freeliver54-blog Park I ' m new to Eclipse/java/android I have already created this project, but I wanted to start over. Deleted the HelloAndroid folder

1. Start the Welcome screen1 @Override2 protected voidonCreate (Bundle savedinstancestate) {3 //TODO auto-generated Method Stub4 Super. OnCreate (savedinstancestate);5 Setcontentview (r.layout.welcome);6 NewHandler (). postdelayed (R, 100

Trapping Rain WaterGiven n non-negative integers representing an elevation map where the width of each bar are 1, compute how much WA ter It is the able to trap after raining.For example,Given [0,1,0,2,1,0,1,3,2,1,2,1] , return 6 .The above

(1) Effect(2) Codehttp://download.csdn.net/detail/wsb200514/8261001(3) Summary--First create different types of gesture recognition based on what you need, such

Android code obfuscation is a must, Java layer code if not confused equals to the source code to send people. So how do you confuse it?Previously, it was generally mentioned that Proguard.cfg was used, but the new version of ADT did not have the

In iOS development, requirements make the status bar white text, here mark:Just the steps:1. Set the "View controller-based status bar Appearance" value on Info.plist inside2, in the need to set the status bar Viewcontrller inside add the following

In each view, there is a way to measure the size of the control onmeasure (int widthmeasurespec, int heightmeasurespec), which is used to initialize the area occupied by the control:Excerpt from Slidingdrawer.java, for reference only onmeasure (int

Two: UI thread plus load image1. Using AsynctaskThe Asynctask class provides a simple background processing method and returns the results to the UI thread.It is proposed in the thread to use weakreference to cache UI controls that display bitmap,

Android different phones for the EditText cursor display style, so if you set a different phone display the same effect, set a style uniformly, the sample code is as follows: Android:layout_width= "Fill_parent" android:layout_height= "Wrap_content"

LinearLayout: is called linear layout, divided into horizontal and vertical, set vertical or horizontal attribute values, to arrange all the child elements. All child elements are stacked behind other elements, so that each row of a vertical list

Use of Android development animations (i)This blog is mainly about the use of the animation effects (animations) API in Android development, which mainly covers the implementation of the four effects of animations: First, picture zoom effectsecond,

Use of Android Development animations (ii)This blog is mainly about the use of animation animation in Android development, and the previous blog post is different, the four animation effect, the main use of XML file implementation, improve the