Mobile Develop

Comparison of Asynctask and handler1) Asynctask implementation of the principle, and the advantages and disadvantages of the applicationAsynctask, a lightweight asynchronous class provided by Android, can directly inherit Asynctask, implement

1. Background informationThe most recent project is to draw a stock chart and draw an indicator line (Indicator) that follows the finger slide to see the stock price and date accurately. As shown in the following:The white line in it is the

Importandroid.app.Activity; Importandroid.content.SharedPreferences; ImportAndroid.os.Bundle; Public classPermissionactivityextendsActivity {Private Final int[] modes=New int[]{activity.mode_private,//The default mode of operation, on behalf of the

Android invalidate and postinvalidate are used to refresh the interface, the difference is:1) Invalidate (): Instantiate a Handler object and override the Handlemessage method call invalidate () to implement the interface refresh, while the thread

The main addition to the control class in Android games is the Display Class View. Surfaceview is a display class that derives from the view base class. The three views commonly used in Android game development are: view, Surfaceview, and

Method One: (Java habits, in the development of Android platform this is not possible, because it violates the single-threaded model)Just beginning to touch Android threading programming, habits like Java, trying to solve the problem with the

1.EditText as a more mature view, in the application development of Android has been very widely used. In some special cases, we may need to customize the input content of the EditText,Allows only the input of the specified function, such as the

Android optimization is the most common is the ListView, Gallery, GridView, Viewpager Big Data optimization picture optimized access network optimizationOptimization principle: Data delay loading local cache in batchesData optimization 1).

Send notification:Uilocalnotification *newnotification = [[Uilocalnotification alloc] init];if (newnotification) {TimeNewnotification.timezone=[nstimezone Defaulttimezone];Push Event---10 seconds laterNewnotification.firedate=[[nsdate Date]

China UnionPay DNA Mobile Payment interfaceChina UnionPay DNA Mobile payment interface, no need to open online banking, only the use of debit cards, credit cards and so on can be paid, payment by the customer when receiving a phone number to enter

Application of ChildviewcontrollerViewcontrolle can add more than one subview to display when needed, the other way is to control the Subview in the page by adding multiple childciewcontroller to Parentviewcontroller; reduce code coupling; by

Tips:The first time there is no AC because there is no judgment 1 for this particular number, the other is nothing too difficult to place, the code and comments are as follows:public class Solution202 {public boolean ishappy (int n) { int

Let's start with a simple topic that we saw on git a few days ago:Defines the log method, which can proxy console.log methods.Log (1 2 3)Usually, your answer will be this:function log () { var args = Array.prototype.slice.call (arguments);

Today, when implementing a save user setting to Sharedpreferences, there is a situation where data cannot be saved to sharedpreferences. After careful analysis, it is concluded that: Android.content.SharedPreferences.Editor.putString (string key,

Just contact AppFrameWork, this want to try to do something to play, but did not expect to be stuck on the drawer.Question one: Obviously is push, how to come out is cover?Drawer plug-in has 3 effects, push,cover,reveal. But I used the push but

When I created a new project last night, I found that I wanted to create a project with an action bar, no matter how I set it up.When the project was created, I choseBut open run or no action barBut looking at other items, androidmanifest.xml files

Here is a Two-touch case code: packagecom.zzj;Importandroid.app.Activity;Importandroid.os.Bundle;Importandroid.view.MotionEvent; public classAndroidtestactivityextendsActivity {Private floatx0, y0; Private floatx1, y1; public voidonCreate (Bundle

Continue with the Update.--------------------------------------------Fourth section install Appium ClientThe Appium Client is a Few extensions and encapsulation of the Webdriver native Api. It can help us to write use cases more easily and write

In android, the menu is divided into the following three types, the Options menu (optionsmenu), the context menu (ContextMenu), and the submenu (submenu).1. Options Menu (optionsmenu) detailedCommon methods that need to be overwritten in the

Activity has three states:When it is on the screen foreground (at the top of the current task stack), it is active or running. It is the activity that responds to user Actions.When it loses focus but remains visible to the user (as on the right), it