Mobile Develop

640*1136 pictures cannot be fully displayed on the Ipone?Iphone5 Resolution: 640*1136 (claimed--device independent pixels)Why Iphone5 is 320px*568px?Px:css pixels logical pixels, abstract units used by the browser (can be larger and smaller

Django allows multiple apps to exist in a project, such as a large portal that can contain forums, news, and so on, each of which is called an app, and can be understood as a separate, small project that is ultimately integrated in a portal to be

This article describes the adapter mode (Adapter pattern), the adapter mode used in the development of the frequency is also very high, such as the ListView and Recyclerview Adapter, etc. are used in the adapter mode. In our real life there are a

Original Address: https://developer.apple.com/library/ios/technotes/tn2434/_index.html#//apple_ref/doc/uid/DTS40017252This document is to guide the use of instrument to analyze the memory of the app, Benefit Ah!!!Optimize your app's memory

QR Code, we also called QRCODE,QR Express response fast response, in many apps we can see the figure of two-dimensional code, the most common is. So today we'll see how to integrate the scanning and generation of QR codes into our own app. OK, no

13. How to fully compile the code?Since the above describes how to connect to the real machine for debugging, it is necessary to quickly complement the fully compiled method. Because you want to debug online, you first have to fully compile the

on the security development of Android key hard-codedIshin, stay Fox @ Ali gather security1 IntroductionIn the Ali gather security vulnerability scanner and the Human app security audit, it is often found that developers are hard-coded in Java code,

This is a long time I want to say the topic, this is a topic I do not vomit, first confessed I was doing Android development, although recently there are things in the whole iOS, but after all, not as familiar as Android, of course, this is mainly

I. PrefaceThe first time to do the navigation, and did not pay attention to voice broadcast, today specifically to improve this feature. But found that the implementation of voice broadcast also encountered some problems, in the official discussion

Original address: Http://www.tuicool.com/articles/uQRF3yMThere are a lot of developers on the web asking how to transfer apps and want to know the specific process. In fact, AppStore app transfer process is relatively simple, the following cool bar

The first thing is to open a local album to choose a picture:Intent albumintent = new Intent (intent.action_pick);//Open the system's album Albumintent.settype ("image/*"); Startactivityforresult (Albumintent, 0x1004);When you finish selecting the

We know that wirelessly's UI thread is not thread-safe, we can't take time out in the UI thread, and it's usually our practice to turn on a sub-thread to handle time-consuming operations in a child thread, but Android does not allow UI updates to be

Data Leakage Local file sensitive data cannot be stored in plaintext, not pseudo-encrypted (Base64, custom algorithm, etc.) Android:allowbackup=false. Prevent ADB backup from exporting data Data leakage from Activity intent. For

can I talk dirty? Well, in order to show that we are scholars, or not ...Recently really was this Xcode real machine debugging and certificate/configuration file problems to want to die heart all have, two days in a row encountered various problems,

Requirements Description: The application has a button inside, click Switch language (such as Chinese and English toggle).Said this is a long time ago to do a function point, the beginning is no clue, and later solved the discovery is very simple,

I believe that everyone in the process of Android development will always encounter in the middle of the activity to pass data, of course, encountered the need to pass the object in the intent of the situation is also unavoidable, so I took a bit of

#1, error descriptionToday, to achieve activity does not show the title bar effect, in the project's Androidmanifest.xml file, the corresponding activity to add properties android:theme="@android:style/Theme.NoTitleBar"The specific code is as

IntroducedAndroid Official document: AlarmmanagerOn the Android platform, in addition to using Alarmmanger, you can also use a timer or handler to achieve timed tasks, but these two methods are not too accurate, so if we need to achieve precise

http://blog.csdn.net/xuesen_lin/article/details/8796492 We can combine the knowledge we have now and think about which modules will be included in each level (regardless of the Bluetooth audio section)?· APPThis is the top level of the entire audio

ProfileThe Android client is divided into four sections of user,httputil,httpcallbacklistener,mainactivity. The user model is the same as the server, on the one hand, the storage model for local user information, and the same key used to construct