Android

Then there is a problem with the ScrollView height calculation. We can not get the desired effect. Core solution: Rewrite the Onmesure method of the ListView or GridView. Copy Code code as follows: public class Mylistview extends

In Android development, most controls have visibility this property, with 3 attributes of "visible", "invisible", "Gone". Used primarily to set the display and hide of control controls.1) Visible (visible)XML file: android:visibility= "visible"Java

The factory method pattern, which is often the model for beginners of design patterns, is indeed one of the most typical and inspiring models. Android uses too many factory classes, which are useful for factory method models, and of course there

The implementation of SMS interception is mainly realized by using broadcast receivers.The Broadcastreceiver broadcast receiver must specify the type of broadcast to receive. You must explicitly specify the actionBroadcast: event.Normal broadcast:

First look at the following picture: This is when I do the login page, call the system ProgressDialog to wait, but looks very uncoordinated, left the waiting picture is too large, the right text is too small, looks old awkward, although the

This requires converting a. png-formatted picture into a. 9.png format,. 9.png is the suffix name. When the ANDROID-SDK is installed, the can be edited with the. png format and then saved into the. 9.png format. This file is stored in

For the touch screen, its original message is nothing more than press, lift, move these several, we only need to simply overload Ontouch or set the touch listener Setontouchlistener can be processed. However, in order to improve the user experience

What is XML?First let's take a look at what XML is. XML, Extensible Markup Language (extensible Markup Language), used to mark an electronic file with a structured markup language that can be used to mark data, define data types, is a source

Objective In Android, there are two ways to implement animation Animation: Tween Animation (motion Tween) and frame Animation (frame animation). Gradient animation is the animation effect of the object in the scene by constantly making the image

Before learning This example, readers should first understand the basic concepts and usage of "broadcast receivers" in the four Android components. Because it is a "listener", there is no need to establish an activity. This is also a kind of "cover"

Android often uses the dialog (pop-up effect), and is very powerful, can simulate the N-type pop-up effect. As shown in the figure: Here's a small example to show you the powerful dialog in Android. The code has written a detailed comment, and

A. Loading Pre-loading: 1. Reflection annotation frame reflect information, in application, multithreading preload to cache. 2. Pre-loading of resources Lazy load: 1.Fragment lazy load 2. Resource Lazy Load Two. Caching 1. HTTP cache,

Slidingdrawer effect must have been seen, it is the 1.5 simulator to enter the application list effect. Here's a screenshot. First, IntroductionSlidingdrawer hides the content outside the screen and allows the user to handle to display hidden

When doing an Android project, we often need to read a picture from a local or a network and convert it to a bitmap picture for use, and here's how to read the local picture and convert it: Java code /** * Gets the absolute path to the

Look at the effect chart first. In fact, to achieve this effect is very simple, as long as drawable drawablev21 two folders is good. Selector in ordinary circumstances: The selector in V21: --> Here

Today practicing, together to draw a Taiji The final effect is as follows: Final effect Generally speaking the principle first, I will go against the road, first speak to achieve it. 1. Inheritance implementation Initialization method Inherit

If you are in a resource file, you can write this. Copy Code code as follows: phone:1390123456 MyLink Copy Code code as follows: phone:1390123456 MyLink If the code is written

First look at the effect chart: Open Source Item Address: Https://github.com/chrisbanes/Android-PullToRefresh Drop-down Refresh This feature we are more common, today is the introduction of this feature implementation. I will follow the example

Friends who are familiar with Android know that both the microblogging client and the news client are inseparable from the list component, and that the list component is the most important component of the Android data presentation, and we're going

The current Android development has so far excellent picture loading framework too many, such as: Volley, picasso,imageloader,glide and so on. But as a program ape, understand the principle of implementation is still very important, only understand