Android

The starting and working principle of Surfaceflinger Start of 1.1.1 Surfaceflinger Surfaceflinger startup and ServiceManager are similar, they all belong to the system's underlying support services, must be in the early start of the device to run.

Introduction of Broadcastreceiver Broadcastreceiver, used for asynchronous reception of broadcast intent, broadcast intent by calling Context.sendbroadcast () send, Broadcastreceiver () receive. The broadcast intent is implemented by calling

Android to get the length and width of the screen, referring to the internet there are a lot of code, but the results are not practical, such as my phone is i9000, screen size is 480*800px, the result is 320*533 The result is very unreliable, so I

Window management is a core part of Android. It manages the creation and destruction of windows, layout and size, control of focus, and so on. Windows can be divided into two categories: One is the application window, which is a window created by

1. Background The previous article on the source of the capture of the Android phone screen function (while pressing the power button and volume reduction, details http://blog.csdn.net/buptgshengod/article/details/19911909), After a week of

Shared Preference stores a set of raw data NVP (Name-value pair) as a naming preference (named preference). Create the Sharedpreferences class using Getsharedpreferences () and pass in the name you want to sharedpreferences; Modifying the

It is believed that the Android practitioner who walks over the steps, everyone will encounter oom situation. How to avoid and prevent the emergence of oom, for each programmer is indeed an essential ability. Let's talk today about the management of

Custom controls are divided into two categories, custom ViewGroup controls, and custom view controls; The pace of tracking view can actually follow the Java implementation of the bottom of what we can find is only canvas, and then down is C + + or C

Categories:android In the Android development, our commonly used layout way mainly has LinearLayout, relativelayout, Framelayout and so on, through these layouts we can realize various interfaces. At the same time, how to use these layouts to

It is painful that Android cannot generate r files, even if there are times when you have no errors in the XML file. To solve this problem, I summarize the following reasons. One. XML itself has errors R.java This file is automatically generated,

This program realizes using DOM method to parse XML file from network side, display in list, and realize click to enter related page. First we create a class that implements HTTP requests and the acquisition of XML file nodes, where the HTTP

The Sharedpreferences object allows you to save some "key value pairs" types of data, such as user ID, birthday, gender, ID number, and so on. However, there are times when you need to use a traditional file system to save data. For example, you may

Listframgent is a fragment containing ListView that displays a range of information through a data source (array or cursor). Listfragment is very useful, like RSS, may display a list on the left, the right to display the selected list of the

As you can see from the previous lessons, ListView is used to display a long list of information while filling the entire screen (listactivity). But sometimes, you might want to have other similar views, so you don't have to fill up the entire

Today, summarize the list controls in Android: ListView and Spinner. ListView can display some information vertically and in a sliding way. The following explains how to display a series of information using ListView. 1. Create a project:

For now, we've seen that there are two ways to adapt to changes in the direction of the screen. Now, let's look at the following changes in the activity State as the screen direction changes. 1. Create a project: Orientations. 2. Main.xml

The Framelayout is a "locator" on the screen that you can use to display a single view. Views that are added to the Framelayout view are always fixed in the upper-left corner of the layout. Consider the following code: Here, a

Typically, an activity may contain one or more fragment that work together to form a coherent UI interface. In this case, the communication between multiple fragments appears to be very important. For example, an activity contains about two fragment,

In the previous article, I worked with you to implement the group navigation and extrusion animation features similar to the Android contact, but since the article is called the Android contact Full effect implementation, there is no quick scrolling

The main content of this article from Android Doc, I translated and done some processing, English good friends can also directly read the original. Http://developer.android.com/training/displaying-bitmaps/index.html Load large pictures