Mobile Develop

Recently in an Android video player project, encountered a problem, that is, after the lock screen, Surfaceview will be destroyed, and then there will be a variety of errors. To CSDN forum to post questions, all kinds of so-called Big God said,

　　Android Layoutweight FAQ

1. Rotate the animationcabasicanimation* rotationanimation;Rotationanimation = [cabasicanimation animationwithkeypath:@ "Transform.rotation.z"];Rotationanimation.tovalue = [NSNumber numberwithfloat:m_pi * 2.0];[Camediatimingfunction Functionwithname:

The client APIs on mobile devices and desktops are not initially synchronized. Initially, you always have some features and APIs on your mobile device, but slowly, these APIs appear on your desktop computer. One application interface technology is

1) Click the Implementation class interface of the button; Disadvantages, more buttons, code redundancy;1.findViewByID ();2.btn.setonclicklistener (New Myonclicklistener ());//interface for implementing classes;3.class Myonclicklistener implements

First, the app sends the username and password to the server, the server verifies that the user name and password are correct, generates a token string in the Redis or memcached server with the user ID key, and the server returns both the token

Mainactivity.javaPackage Com.example.internetimageview;Import java.io.IOException;Import Java.io.InputStream;Import java.net.HttpURLConnection;Import java.net.MalformedURLException;Import Java.net.URL;Import android.app.Activity;Import

when users use the app for some risky operations, the use of dialog boxes to prompt users to play a very user-friendly role. The following two types of dialogs are commonly used: Uiactionsheet and Uialertview. But after iOS8 uiactionsheet and

2014-07-07 Update: Apple fully uses instancetype instead of ID in iOS 8Steven Fisher: It's good to use instancetype as long as a class returns its own instance.@interface Foo:NSObject - (id)initWithBar:(NSInteger)bar; // initializer + (id)fooWithBar:

Receive processing for intent:1. Receiver RegistrationThis has been introduced beforeThen take a look at the remaining two reception functions above. Schedulereceiver Scheduleregisteredreceiver;Schedulereceiver will fall into the Schedulereceiver

Direct:Implementation steps:1. Main interface Activity_main.xml very easy, a button 2. Pop-up layer style Actionsheet.xml > 3.ActionSheet classpublic class Actionsheet {public interface onactionsheetselected {void OnClick (int whichbutton);}

Private Boolean IsOnline () { Connectivitymanager cm = (Connectivitymanager) getsystemservice ( Context.connectivity_service); Networkinfo ni = Cm.getactivenetworkinfo (); if (ni! = null && ni.isconnected ()) {//

From PC to mobile I believe many front-end siege division to worry about Mobile, write the original soundtrack mobile phone side event is very laborious, and JQ's click has 300 milliseconds delay, now has a relatively good JQ plug-in Hammer,

In the design process, we often encounter such requirements:Put a line 3 control, left-aligned left control, right-aligned right control, middle control, to fill the remaining space.Or a column of 3 controls, the top is aligned with the upper, the

1. Mediascanner HEAD2. Application Layer MediaproviderPackages\providers\mediaprovider(1) MediaproviderPackages\providers\mediaprovider\mediaprovider.javaMediaprovider inherits from ContentProvider, which is used primarily to create database tables

Nsfilemanager is a class for iOS file System management.1. Persistent data, general use directory:nsdocumentdirectory2. Cache directory:nscachesdirectory3. Use the above functions to obtain the above two directories:?nsarray

Android Basics Getting Started tutorial--2.2.5 GridLayout (Grid layout)tags (space delimited): Android Basics Getting Started TutorialIntroduction to this section:The layout to be introduced today is a new layout introduced after Android 4.0, and

Https://github.com/AlloyTeam/MarsHttps://github.com/hoosin/mobile-web-favoritesCross-domain issuesThe mobile browser is also a browser, in the AJAX call external API when there is a cross-domain problem, this time can let the backend plus two HTTP

You need to know the following two points before using autolayout:1. Translatesautoresizingmaskintoconstraints must be set to No.2. If the Viewcontrol is autolayout, it is written in [-updateviewconstraints];If it is a view then the AutoLayout Fit

1. IntroductionMediascannerservice abbreviated mss, is a service running in the background, the implementation of the runnable Interface.Mediascannerreceiver receives the broadcast and then completes the work by MSS. The main work in MSS is