The principle of implementation: the use of automatic layout and deformationCore code block:@implementation Jhmainview{UILabel *label1,*label2,*label3,*label4;UIButton *btn;}-(ID) initWithFrame: (CGRect) frame{self = [super Initwithframe:frame];if
For. NET developers to write Java, it is said to see Mountains are mountains, because too much of the same;Recently, due to work factors, some of the functions of the project need to be ported to the Android platform, after half a month of suffering,
Add an Android system jar Package in EclipseThe advantage of this is that you can use the Eclipse development system application so that you can invoke APIs that are used in the system.1. First Right-click the property in the project . Operate
Fix the problem: trim the upper and lower portions of the picture according to a certain length and width ratio, preserving the contents of the middle. Of course, you can also customize the areas you want to trim.premise: You need to add
In the process of Android development, Android's own controls sometimes don't meet our needs. This time I need to customize. Let's take a look at the custom view:Package Com.example.myview;import Android.content.context;import
Relativelayout relative layout, all internal components are relativeXML properties
XML properties
Function
Description
Android:gravity
Setgravity
How the internal components are aligned
Four easy-to-confuse attributes1, TextAlignment: The horizontal direction of the text alignment method1> valueNstextalignmentleftNstextalignmentcenterNstextalignmentright2> which controls have this property: A control that is generally capable of
I. Basic points of knowledgeIn fact, to complete this function is very simple:1, MainactivityStartactivityforresult (Intent, 100);//The second one is the request code@Overrideprotected void Onactivityresult (int requestcode, int resultcode, Intent
I was based on the http://www.myexception.cn/operating-system/1596429.html link to download the source code, the results downloaded to find that can not be used, so the changes in their own hardships, and finally run through. Now come on, let
Introduce the project to a certain large time will find that the number of methods too many, installation package is not loaded up, this is not surprising, we all know when the number of methodsover 65536When this number is limited, Block in the 2.x
Because the Android system has a high demand for hardware, and the upper-level applications are written in Java (less efficient than C + +), the optimization of the program becomes the daily work of the programmer; Android optimizationThere are
Platform: Freescale/android 4.2.2Problem Description:With the DF command, see/system partition size 275M.With BusyBox fdisk-l/DEV/BLOCK/MMCBLK0P5, see 536M.Freescale's Brush machine tool is mfgtool, the partition of the action in the
Explain the anroid.view.animation.Android.view.animationProvides classes that handle tweened animations.Android provides-mechanisms-I-can use-to-create simple animations: tweened animation, in which you tel L Android to perform a series of simple
Server-side:1, create data table2, manipulate the log of the database. Define three fields (ID, Operation time, action content, distribution to the user ID of the owning phone)Id:js UUID ValueOperation time: 2014/8/21-11:32:10What to do: Store
Functions in JavaScript are objects, as well as other JS objects, where call and apply are among the more important methods that can be used to invoke functions indirectly. These two methods allow explicit invocation of this value, which means that
A text label with strikethrough, inherited from UilabelThe self-drawing code steps are as follows:1, overriding the DrawRect method of the control2, first get the context object3, set the color, and specify whether toFill (fill) mode or brush
Pre-test preparation for a real machine: 1. Apple Mac one. If you use is * * * don't know can, anyway I didn't use ... The general company will give you development tools. 2.iphone mobile phone. (I pure cock silk, with iphone4) 3. Developer
IOS Mobile device has a media database file, this file holds the current device media information, such as music, video, e-book, Ringtones and so on, are kept here, nonsense not to say moreITUNESCDB is a binary file, which is organized with nodes,
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