1-ios-Basic Knowledge

The status bar setting: in IOS7, the status bar is managed by default by the controller, such as the status bar style, the status bar is visible, the controller by overriding the following methods to control the status bar 1, set the status bar

Android--activity receives data returned by another activity

When we jump to another B (activity) in a (activity), and then return a by B, a how to accept the returned data.We add an input box and a button to the B page, when the input data, click the button to return information to a page, first look at the

[Android] Add graphics to edittext hint

Cause: Sometimes we need to display a mixed background hint when there is no text, so if the control overlay is inefficient, we can use the OnDraw method solution of overloaded view:This is the effect, that search box.Package

"Miles Journey--windows App development" File picker

Save a file using the file pickerAs far as I am concerned, I still like using the file picker very much, because I can use my own code to invoke the various frames of the system.In this example, you first add a button and a TextBlock to the XAML,

Android Water Ripple Effect realized

Customize a class, inherit view, directly on the code, relatively simplepublic class Myring extends View {Private list listwave;//Ripple ListPrivate int[] Colors = {color.blue, color.green, Color.yellow, color.red, Color.cyan};Private final int midx

Android Studio shortcut keys for Mac

Action Mac OSX Win/linux Comment Code (//) CMD +/ Ctrl +/ Comment Code (/**/) CMD + Option +/ Ctrl + Shift +/ Formatting code CMD + Option + L Ctrl + Alt + L

The difference between Android back key and home key

Back keyAndroid programs do not have to deliberately quit, when you press the back of the phone, the system will default to call the top activity in the program stack Destroy () method to destroy the current activity. When this activity is started

Android using the camera demo

Private voidsavefullimage (String str) {Intent Intent=NewIntent (mediastore.action_image_capture); //folder AAAAFile path1 =NewFile (path +floername); if(!path1.exists ()) {Path1.mkdirs (); } File File=NewFile (path1, str + ". jpg");

"Android App Performance Optimization" chapter 8th Graphics

1. The XML setcontentview of 30 parts in the example takes up almost 99% of all time before the end of OnCreate () to Onresume ()Because the overhead of expanding the layout is significant. Try to use a different layout method. For example, reduce

Android Get mobile phone number and operator

public class Phonesimcinfo {/** Phone Management Tool class */Private Telephonymanager Telephonymanager;/** International Mobile User ID * * *Private String Mimsi;Public Phonesimcinfo (Context context) {Telephonymanager = (Telephonymanager)

Implement WebApp Direct-adjust Nativeapp

Original http://www.baidufe.com/item/3444ee051f8edb361d12.htmlTry a small demo, from the WebApp directly on the Android Native app, including the application has been installed and not installed, or quite interesting, record something:First, add to

Android Database Summary

Android Database Summary The first step: Write your own class inheritance Sqliteopenhelper, as followsPackage Com.example.wxj2048;import Android.content.contentvalues;import Android.content.context;import Android.database.cursor;import

Android Development: How to handle generics with Gson

In the actual development, often with Gson processing interface returned data, because of the type of processing, need to write different methods, also because the return is an object or list, but also to write different methods, this does not

android# writing a chat interface

Excerpt from the first line of code--Guo LinSince you are writing a chat interface, you must have received the message and sent the message. The message_left.9.png we made in the previous section can be used as a background for receiving messages,

"Android Application Performance Optimization" chapter 5th Multithreading and synchronization

1. System threads visible in Ddms (Andorid3.1 Galaxy Tab 10.1 for example):MainHeapworker performing finalize functions and referencing object cleanupGC Garbage collector garbage CollectionSignal Catcher captures Linux signals for processingJDWP

Android Internationalization-Supplement

In XmlWriter, you need to create a file directory to create an. xml file based on this path. Private Static voidBuilderarrayresources

Java executing spark query for the jar package for HBase appears with error: OB aborted due to stage failure:master removed our application:failed

Exception occurs when executing Java calls to Scala's packaged jar  /14 23:57:08WARN taskschedulerimpl:initial Job has not accepted any resources; Check your cluster UI to ensure that workers is Registered and has sufficient memory15/04/14

Android Learning--r File Loss Exception Reason summary

Console error:R.java was modified manually! Reverting to generated version!Introduction:R file loss exception is a common exception in Java development, the cause of this anomaly may be very small, but to the Android developers to create a great

Step by Step _android Development Course [30]_ user interface Viewflipper

Focus on technology, enjoy life! --qq:804212028Browse Links: http://blog.csdn.net/y18334702058/article/details/44624305 Topic: Viewflipper of the user interface-Viewflipper Multi-View Switching (instance)Implementation results:Swipe left

Android NDK Learning Transfer Class object

This blog is mainly developed under ubuntu, and by default you have installed the eclipse,android SDK, Android NDK, CDT plugin.Add the config ndk in eclipse, eclipse->window->preferences->android->ndk the path below, Select the Ndk path, and

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