Android

In earlier versions, there was only one drawable, while in later versions, there were three drawable-mdpi, drawable-ldpi, and drawable-hdpi, which were mainly used to support multi-resolution. Differences between drawable-hdpi, drawable-mdpi, and

0. Special terms 1. Physical Structure 2. System Architecture This article uses the Freescale IMX platform codec alc5625 as an example. 0. Special terms ASLA-advanced sound Linux architecture OSS-previous Linux audio architecture,

1. Run the "ADB reboot bootloader" or "ADB start-server" command in Ubuntu to get the following error:   Error: device not foundCause 1 may be that no USB rule is added: Create the file/etc/udev/rules. d/51-android.rules: # HTC phonesubsystem = "USB"

Ubuntu12.04 the following error occurs when 64-bit Android source code is compiled: Host executable: cmu2nuance (Out/host/linux-x86/obj/executables/cmu2nuance_intermediates/cmu2nuance)/Usr/bin/ld: cannot find-lncursesCollect2: LD returned 1 exit

This article describes how to use cygwin to build Android opencv 2.2 and cvcamera sample on

Reprinted please indicate the source: http://blog.csdn.net/guolin_blog/article/details/9153761 In the previous article, I analyzed the event distribution mechanism of View in Android from the perspective of source code, I believe that I have a deep

When creating an Android app a few days ago, you need to draw a pie chart and use the code to draw one by yourself. Of course, it will not be too complicated, however, after all, we should try to avoid re-inventing the wheel (some angry youth should

The first step is to use the local computer to communicate with the android simulator on the local computer. The reason is that the main UI thread of Android cannot execute a working thread, that is, to execute network operations.There are two

Android screen implementation (note) /Android2.1/system/CORE/ADB/framebuffer_service.c. The data received by the Code ddms that communicates with the adbd process in ddms is processed in Java! The Code of framebuffer_service.c is as follows:     /**

Androird GDI's shared buffer mechanism 1 native_handle_t package for private_handle_t Private_handle_t is the private data structure of the local buffer used by gralloc. So, while native_handle_t is the abstract data structure that can be passed

Reference URL: http://www.lanfox.com/forum.php? MoD = viewthread & tid = 2354. Keywords: Android desktop shortcut plug-in URL Creation Platform: s5pv310 System: android2.3 android2.3.4 android4.0.3 Problem: Today, I have a customer who asked me

A process document that was written a long time ago, from the upper interface to the kernel calling process. Recently, my colleagues asked me to read it and I am sorting it out again, this is purely personal analysis (but all operations have been

Keywords:Android 4.0 user Eng camera NAND serial port Platform information: Kernel:Linux3.0 System:Android4.0.3 Platform:S5pv310 (Samsung exynos 4210)   Problem description:The following problems occur after the android4.0 compilation mode is

1. After the file system is mounted to the kernel, the first process INIT process will be started. This process corresponds to system/CORE/init. C. 2. In the main function of init. C, dcall to use import_kernel_cmdline () to read the kernel startup

 In appwidget, both imagebutton and button are supported controls, and their events can be divided into three types: 1. Enable Activity Ii. Start Service 3. Send button action The following describes how to implement the analysis one by one. 1.

Http://blog.csdn.net/starfeng11/article/details/7009338   Events triggered by touch. Android events: onclick, onscroll, onfling, and so on are composed of many touch events. The first status of touch must be action_down, indicating that the screen

In the Android system, there are some Initialization Configuration files, such: /Init. RC /Default. Prop /System/build. Prop The file contains the system attribute values configured for boot,   These property values can be obtained through getprop,

Surfaceflinger is loaded as a system service in the system startup phase. Each window in the application corresponds to the surface in the local code, and the surface corresponds to each layer in surfaceflinger. The main function of surfaceflinger

In Android, the upper layer can use 92 key values by default, from 0 to 91. In general, these key values are sufficient, but if you want to expand them, you still need to add a new key value, so how to map a new key value from the driver settings to

  Original article: http://topic.csdn.net/u/20091226/00/09e2979b-7c8c-4991-856d-586a278875c0.html Source: http://blog.csdn.net/li_guotao/article/details/6347517     1. Create a new package under SRC: COM. Android. Internal. telephony (same as the