Mobile Develop

     nsstring *titlestr = @ "Lin Xiao Xi";  //the first character          NSString *firstStr = [titleStr substringToIndex:1];                 //judge is not the beginning of Chinese         bool isfirst = [self iszhongwenfirst: firststr];        if 

今天和大家分享如何判断手机上是否安装了XXX.apk。因为国外项目在打开地图的时候一定要使用gGoogle map，像这种打开第三方软件的，android都会采用Intent进行跳转，然后根据ＡＣＴＩＯＮ判断类型，弹出一个选项框。但是客户非要指定Google map，所以在跳转的时候就要进行筛选，其实就是根据APK的包名进行筛选以Google map 为例~Google

OneThe screen origin coordinates (x, y) are subject to Self.navigationcontroller. Navigationbar's settranslucent (BOOL) property controlsAfter iOS7, the translucent property defaults to Yes for the property meaning is the translucent effect of the

First, Uitextfield1. What is Uitextfield?(1) Uitextfield (input box): Controls that control text input and display. In the app, the frequency of Uitextfield appears relatively high;(2) iOS system with the help of virtual keyboard input, when you

First, write it in Viewdidload.if ([Self.mytableview respondstoselector: @selector (setseparatorinset:)]) {[Self.mytableview Setseparatorinset:uiedgeinsetszero];}if ([Self.mytableview respondstoselector: @selector (setlayoutmargins:)])

In Objective-c, you can actually run AppleScript.The first way is that source writes the script to the variable string. Nsappleeventdescriptor *eventdescriptor = nil; Nsapplescript *script = nil; NSBundle *bunlde = [NSBundle mainbundle];

1:Understanding of the initWithFrame method1what is the. initWithFrame method? The initWithFrame method is used to initialize and return a new View object, based on the specified cgrect (size). Of course, other UI objects, there are initwithframe

Recently in the Analysis of Android window Management Services, now analyzed the window Management Service related object creation process, in order to clearly represent the Window Management Service related object creation process, the entire

In the use of Uiimageview , It is sometimes necessary to set the fill mode of the contents of the picture in the code. in order to facilitate the future work convenient to find use , the various models are now tested as followsTest picture content

Butterknife official websiteIn fact, butterknife annotation style, and xutils viewutils module basically almost, as long as the use of xutils, the framework will be basically.First, the principle.Recently found a very useful open source framework,

Problem Description: This is when the Android SDK API level 17 in the Apidemos, reported the error, but this property is clearly the android comes with, how can you report this error? Think of the solution, and later changed the configuration is

Today, a new IOS project was created, using the Nsclassfromstring method to create a class, but always returning a null pointer.Spent an afternoon to check whether the code is wrong, configuration is not a problem, how to find out how to solve the

First create the UIWebView, this is not difficult, set the frame, and then add to the Self.view:UIWebView *webView = [[UIWebView alloc] initWithFrame:self.view.bounds];webView.scalesPageToFit = YES;//自动对页面进行缩放以适应屏幕[self.view

Pre-order work: Add items and charge your accountRequire ' net/http 'url = uri.parse (' http://116.255.240.184/do.aspx ')Response = Net::http.post_form (url,{' action ' = ' loginin ', ' uid ' = ' 1 ', ' pwd ' = ' 1 '}) #登录 function, username,

Problem Status: Android ListView GetView () method repeated calls cause position dislocationWorkaround: Change the Layout_height property of the ListView layout file to Fill_parent or match_parent.Android:id=

Setup method: Add an attribute android:screenorientation to the activity in Androidmanifest.xml. For example, set the activity to landscapeandroid:screenorientation= "Landscape" >The screenorientation values are as follows:Landscape:

This paper mainly introduces the basic concepts and some properties of the following UIView. As for attributes, the user is followed by a detailed introduction-Basic concepts of UIView1. What is a control?All UI elements on the screen are called

The circular ad bit is also a very common component, the network has a variety of implementations, that day saw the Singwhatiwanna of a realization, very simple, and then combined with a previously seen one, a little tidy up a bit.Reprint please

I. IntroductionIn android, memory use issues have always been a very important, compelling issue, when our code is poorly written, or the logic is not handled well, it can cause the machine to run slowly, and sometimes even Crash. For programmers,

A. Four-tier architecture of the Android systemthe First Layer: applications: This is the application of the system on the mobile phone or the third party applicationSecond Layer: application Framework: This is the java-related API sectionlayer