Android

Get control height and width in Android OnCreate () Try to get control height and width in oncreate () Children's shoes are aware that the getwidth () and GetHeight () method return is 0, specific reasons to see the activity life cycle will

Recently do LAN socket connection problem, to be in a common socket connection between the activity, on the Internet search under the information, feeling or application method easy to use, post out to share! In Android, you pass variables in

1.MapView, mapactivity This limitation is that you must inherit mapactivity, otherwise you cannot use Mapview. This is where the tangle lies. However, the latest official online has abandoned the dross of the mapactivity. Version 1 of the Google

The micro-trust platform is very hot after opening, many third-party applications want to try this platform, after all, can use the micro-letter to build up the relationship chain to expand their application is quite good, can save a lot of social

Look at the effect chart first Main areas of treatment:1, Recyclerview in the adapter of the item individuals can be unlimited polling.2, Recyclerview automatic sliding3, the finger press when the slide stop, the finger lifted and continue to

Android Startup mode: Startup mode: Launchmode plays an important role in the process of multiple activity jumps, and it can decide whether to generate new activity instances, reuse existing activity instances, and share a task with other activity

Objective Since Android's TextView control doesn't offer a tilt (I haven't found it for a while), we can customize the control to implement it, and here's what we've achieved. TextView text Tilt In fact, the implementation is very simple, here we

Android phone has its own camera and graphics library, we do in the project is sometimes used to upload pictures to the server, today did a project to use this function, so put my code to write down and share with you, the first blog I hope that the

In the Android SDK, we have a timer, called chronometer, that we can become a component of Android, and it has its own unique approach. Here are some examples of how this timer is used and how it is used.As with other UI components, when we want to

Android ListView Add header layout and foot layout Before learning Himalaya A small demo, posted out for everyone to learn the reference; If our current page has more than one interface, a variety of layouts, our general choice is nothing more

Android randomly generates CAPTCHA code, Android uses random numbers to draw irregular verification code, which strengthens the security of user login or registration.The specific ideas are as follows:On a fixed-width canvas, draw a fixed number of

Android TextView Arc Effect Chart: Layout code: Style code: Radians and backgrounds are mainly implemented by the. xml file in background. 1, 2,

Android Application class: Detailed explanation for the application class in Android: In peacetime development, we may sometimes need some global data, so that all the activity and view in the application can be accessed, when you encounter this

Under Android, events occur under the listener, and the Android system responds to keystroke events and touch-screen events, and this article mainly introduces the button click event Method. One, the realization button clicks the event the method

Recently in Reading Zxing project, learned a lot of things. Recommend that you also read. There is a Beepmanager class that implements a beep and vibration. Let's take a look at how he did it: Bee-Ringing 1. Prepare an audio file for example: Beep.

Copy Code code as follows: /** * Gets the number of cores available in this device, across all processors. * Requires:ability to peruse the filesystem at "/SYS/DEVICES/SYSTEM/CPU" * @return The number of cores, or 1 if failed to get result *

Objective Effect of this article: When the text box is blank, the input icon is displayed, the empty icon is displayed, and the empty icon clears the text box. Body first, the realization effect 　　 　　 Second, the implementation of the Code

Use XML to define tween Animation The animation of the XML file in the project Res/anim directory, this file must contain a root element, you can make Interpolation elements or the above elements are placed in the element group, by default, so

Paint Class The *paint class represents a brush that describes the color and style of the graphic, such as line width, color, transparency, and fill effects. * When using the paint class, you need to create an object of that class, which can be

In the process of program development, log is a widely used mechanism for recording program execution, which can be used for both program debugging and event recording in product operations. The Android system provides a simple, convenient log