Although I have already found relevant information on the Internet, I still write and write it to make it easier for me to read and remember, while providing help to csdn bloggers.
1.Android:Layout_weight="1"(The value here can be modified
Original article: http://blog.sina.com.cn/s/blog_4a0a39c30100auh6.html
The android SDK is always upgraded, M3-> M5-> 0.9->1.0. The most important thing is that TMD is somewhatCodeNot compatible yet. You have to review apidemos and follow the
We can achieve this through componentname and setcomponent of intent: In an applicationProgramStart another installed application or system program.
Below is an application that starts another installed program, as shown below:
// Component
After the android simulator runs, the/system directory is read-only. If you wantProgramUpload it to the directory to run it. Of course, using the ADB remount command can temporarily remove its read-only restrictions, you can upload files to it, but
Recently, Android 2.3.5 (CM-basedCodeThe front camera records the problems encountered and solutions for review.
1: Why can't upper-layer applications obtain information about the front camera?
Messages from the front camera are generally
I just read the android API and found this thing. It feels good. To remember it, write a blog so that you can use it easily in the future. Monkey isProgramSimulate operations by generating a large number of pseudo-random system-level user event
Open the File Manager and findThe/system/Media/Audio/UI directory contains various system sound files on the mobile phone. The specific files are as follows:
Camera_click.ogg (photo sound)
Effect_tick.ogg (TAG, selected sound)
Keypressdelete.ogg (
The irreconcilable contradiction between handheld devices today is the contradiction between the increasing energy consumption and the bottleneck of battery capacity. Even if this bottleneck is absent, the longer-lasting endurance is also widely
I was lucky to debug two camera sensor models on Qualcomm's Android platform some time ago. One is ov's 5 m YUV sensor, which supports JPEG out and Af. debugging is relatively simple, because other projects are already in use, just port the relevant
I saw this doc when analyzing the INIT program source code of the Android system. I think the system analysis is quite useful, so I translated it!
Android initialization language (init. *. RC, init. conf file format)
The android initialization
From http://www.bangchui.org/read.php? Tid = 8458
For more information about how to optimize the activity startup speed and view rendering speed, see the documentation in this SDK.
Android display SW Architecture Analysis
The following describes the layers:
*Blue part-User space applications
Application Layer, includingAndroidThe application, framework, and system Runtime Library are related to the underlying system
From http://blog.csdn.net/yili_xie/archive/2009/11/30/4906865.aspx
Compile scripts and System VariablesBuild/envsetup. Sh script analysisBefore compiling the source code, you usually need to execute ../build/envsetup. Sh in the top-level directory
Adding a driver to the android kernel is actually adding a driver to the Linux kernel. It mainly adds vertex information to two files, one is the kconfig file and the other is the MAKEFILE file. For example, if the driver you added is placed in the
Android service Introduction
1. What is service?2. How to Use Service3.ServiceLifecycle
1. What isService
ServiceThe name is similar to the "service" that we normally understand. It runs in the background and can interact with each other. It is
(The hanchao3c Android Developer Forum is original. For more information, see)
This article is a follow-up part of the introduction to Android's multimedia framework opencore (packetvideo). For more information,
When the applications we make need to share data, but only want to share some specific programs, we can control other programs to share data by setting the corresponding permissions.
First, specify the permission when defining data sharing:
Android:
Run the following command:
1. Remount the/system directory to enable read/write: Mount-O remount, RW/dev/null/System
2. Modify the permission for this file: chmod 777/System
3. Use the DD and MV commands to copy the file to the system:
Dd If
The Java Native Interface (JNI) standard is part of the Java platform. It allows Java code to interact with code written in other languages. JNI is a local programming interface that enables the Java code running inside the Java Virtual Machine (VM)
I don't need OpenGL ES drawing for a long time, so I'm afraid I forget it. So I review it again. By the way, the principles are summarized as follows:
1. Android 3D Coordinate System
In Android 3D Coordinate System:
Coordinates are located in the
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