Android

  Reference: http://blog.csdn.net/belyxiong/article/details/5875993 adds underlying core services for Android The information in the blog post is incomplete and has a small problem. This article will make some preparations for the entire process and

Use the android packaging tool (aapt) to combine Dex files, resource files, and androidmanifest. xml files (in binary format) into an application package (APK ). When optimizing the android Dex file, you must note that the DEX file structure is

Recently, the task is to adapt the product's GPS to the android2.3 source code. The general porting practice is: Read the gps scn data from the serial port, in the GPS hardware adapter layer (HAL) parse the data and report it to the framework layer.

From: http://blog.csdn.net/linweig/archive/2009/12/24/5061016.aspx   Android building system includes important configuration items,(1) Android. mk(2) androidproducts. mk(3) Target _-. mk, host _-. mk and-. mk(4) boardconfig. mk(5) buildspec.

As more and more functions are being developed for Android applications, the startup speed is getting slower and slower. Is there a way to make your application start faster? Methods are developed by humans. Let's talk about my implementation

Proud apple, selling cute android. From the perspective of personal psychology, Android's little robot is fascinating, A bite of Apple pays more attention to design and is simple and exquisite. If there are two systems, I think it's better to buy

The analysis tool for Android Application Performance Optimization last recorded the process of solving excessive plotting. This time, how can we determine whether the process is smooth and conceptual? In fact, at first I thought it was a bit

Next, let's take an example of the rollback Stack: The android browser app declares that the Webpage Browsing activity must be opened in its own task-by specifying the singletask Startup Mode in the element. this indicates that if your app sends

Add Motion Drawing on the screen is the basic capability of OpenGL, but you can also use other android graphics framework classes, including canvas and drawable. However, OpenGL ES provides other capabilities to move and transform objects in three

Author: Tang Pan, Hua Qing vision embedded training lecturer. 1. Compile the android Simulator In ubuntu, We can compile our own simulators, sdks, and other compilation tools in the source code. Of course, this is no different from the download in

For the neon version of xbmc-android compilation method, refer to the official documentation: Https://github.com/xbmc/android/blob/android-rebase-11/docs/README.android My target platform is hi3716c, and its CPU feature is: SWP half thumb fastmult

Several Problems in the Display Section have been clarified through actual tests over the past few days, mainly including the usage of each module and the calling process of several modules in the Hal layer. The problem is described as follows: 0.

In Android, latency functions are divided into user space and kernel space: Kernel space # Include Udelay (int n ); Mdelay (INT n )); Ndelay (INT n )); These functions will lead to an endless cycle of CPU and lead to a busy wait of CPU. Usleep

If you do not know about the fork mechanism, you can first look at this blog from a interview question to talk about the running mechanism of fork in Linux.This article JollenOutput at 2017l 5, 2010 pm When the Android operating system is turned on,

When Android is started, a logo is displayed, and its source code is located in logo. C under the/system/CORE/init/directory: The code I commented out is as follows: # Include # include # include # include # include # include # include

Myserviceactivity instance ){Myactivity = instance;}Public myserviceactivity getinstance (){Return myactivity;}}2. Save the instance in ActivityPublic class myserviceactivity extends activity {/** Called when the activity is first created .*/@

The sub-thread updates the UI. Obviously, if your program needs to execute time-consuming operations, it would be wrong if the main thread is responsible for executing the operation as in the previous example. Therefore, we need to create a new

First question:Determine whether the mobile phone is currently using a SIM card or WiFiI wrote an encapsulation method, which can be used later: [Java] View plaincopyprint? /** * Check the Internet is * Mobile or WiFi * Add By wangxianming *

The compass has always been an indispensable and important role. The idea of developing a compass is very simple. The program first prepares a picture of the compass so that the pointer on the picture points to the north, and then develops the

1. Declaration in XML   2. Register in the code Intentfilter filter = new intentfilter ();Filter. addaction (wifimanager. network_state_changed_action );Filter. addaction (wifimanager. wifi_state_changed_action );Filter. addaction