Mobile Develop

call/apply function is actually changing the value of this, there is a sentence: Who calls this method of the method that is who, and sometimes we will need to change this value, so call/apply can come in handy.Let me write a method to simulate each

Getintent (). Getextras (). Get ("intent"); This intent is the parameter of the data wrapper. For example: Intent Intent = new Intent (this, youclass.class); Intent.putextra ("Data1", "Youdata"); Startactivit (Intent); Gets the data getintent ().

Android: Control Autocompletetextview Auto PromptEnter the information we want to enter in the input box and there will be other hints associated with it, which is implemented in Android using Autocompletetextview.Xml Autocompletetextview

One, import source code 1, first in the root directory execution: source BUILD/ENVSETUP.SH2, and then execute: MMM development/tools/idegen/ //This line of command means to compile Idegen this project, Generate Idegen.jar file 3,

Transferred from: http://ghostfromheaven.iteye.com/blog/752181There are a number of ways that Android implements TextView in text links.There are about 4 kinds of sums to sum up:1. When the text appears in the URL, e-mail, phone number, etc., you

Configuration of the JDK environment variable:Right-click computer or My Computer , select Properties -- advanced or Advanced system settings (for example, Figure 1below)-- environment variable "(for example, Figure 2below), for example:Figure

First, hide their own soft keyboardWhen there are multiple Uitextfield controls that want to hide their soft keyboard by clicking "Return". The best way to do this is to use the Do End on Exit event. This event is triggered when you click the

1. Please describe the activity life cycle.Answer: as shown in. There are seven periodic functions, in order: OnCreate (), OnStart (), Onrestart (), Onresume (), OnPause (), OnStop (), OnDestroy ().OnCreate (): Called when an activity is created,

1 PackageUI;2 3 ImportAndroid.content.Context;4 ImportAndroid.graphics.Canvas;5 ImportAndroid.graphics.Color;6 ImportAndroid.graphics.Paint;7 ImportAndroid.util.AttributeSet;8 Importandroid.view.MotionEvent;9 ImportAndroid.view.View;Ten One /** A *

1.activity If you want to use a sensor, you must implement the Sensoreventlistener interface2. Get the Sensor Management object (Sensormanager)3. Registering the specified sensor using the Sensormanager.registerlistener method4. Perform other

Original link: http://www.orlion.ga/687/There are many ways to parse JSON, mainly the official jsonobject, Google's Open Source Library Gson. In addition, some third-party open source libraries such as Jackson, Fastjson and so on are also very

Original link: http://www.orlion.ga/560/This article has actually been written in the previous article almost, but the evil of WordPress did not save! This has happened more than once!The life cycle of a fragment1. Fragmentation Status and callbacks1

Original link: http://www.orlion.ga/665/First, call the cameraCreate a project Choosepicdemo, modify Activity_main.xml:             Where button is used to pick up the camera, ImageView is used to display the captured

Original link: http://www.orlion.ga/572/I. Broadcasting mechanismEvery app in Android can register a broadcast that it's interested in, so the program will only receive the broadcast content that it cares aboutMay be from the system or from other

The interface display on Android is implemented through activity. The activity is too often used. I believe we are already familiar with this, and we will not repeat it here. However, the activity also has its limitations, the same interface on the

In iOS, the common scenario for sending HTTP requests isApple native (comes with) Nsurlconnection: Simple to use, the oldest and most classic of a scheme Nsurlsession: More powerful than nsurlconnection, recommended using this technology

When writing iOS programs in non-arc mode, it is unavoidable that program memory leaks, and later we generally do memory optimization. There are two kinds of memory optimization methods that you use more commonly1, Analyze, static analysis of memory

Notification dialog boxGets the alertdialog.builder object, through the new Builder (context) parameter: ContextsCall the Settitle () method of the Builder Object , set the caption, parameter: textCall the SetIcon () method of the Builder Object ,

Enumeration of common controls in a departmentToday, let's introduce the most basic controls that are most commonly used.1.Button button2.TextView text display (equivalent to a label in a Java control)3.EditText Edit text box (equivalent to

finally, the 2015 15-inch MacBook Pro notebook was installed on the WINDOWS10 operating system and was installed on an external removable hard Drive. The performance and the user experience are also great.Before the online purchase of encrypted