Build an arm-Linux-GCC cross-compilation tool chain environment (Android native (JNI) Development Environment)

Environment: Windows XP + VMware + RedHat (UBUNTU) Note: The environment described in this article is also the development environment of Android native C (JNI ). 1. First download a cross-compilation tool chain version

Android hardware abstraction layer and debugging information

First, add the # include "utils/log. H" header file to the. c file. Then, andorid. mk needs to be added. Local_shared_libraries + = \ Libcutils \ Libutils Local_ldlibs + = _ llog Finally, you can write custom macros: # Define logd (...) _

How Android devices act as video monitoring clients

1: directly obtain the data previewed by camera, compress the data with open-source encoders such as x264, and transmit the data to a remote server using the standard RTP protocol. The key to this method is to use a pure software processing method

Usage of Chronometer for Android

Step 1: Layout file:The main. xml Code is as follows: View Code 1 2 3 10 11 12 13 14 21 22 23 24 25 32 33 34 35 36 45 46 47 48 49 58 59 60 61 62 71 72 73 74 75 84 85 86 87 88 89 90 Step 2: MainActivity Code: View Code 1 package net.

Custom Toast for Android

The default Toast for Android is very simple and easy to use. However, sometimes our program uses the default Toast instead of the overall style of the program. In this case, we need to customize Toast to make it more integrated with our program. To

Android custom Spinner drop-down menu and AutoCompleteTextView automatically display (drop-down list box) style

In Android, the Spinner is the automatically displayed style of the drop-down menu and AutoCompleteTextView. It is equivalent to the label in HTML.The Spinner Widget drop-down menu and AutoCompleteTextView provided in Android are very easy to use

Configure a user-friendly Android Simulator

By default, the Android simulator looks like this: The most prominent problem on the screen is obviously its ugly interface. The simulator window occupies a huge space on the screen and has a screen keyboard for no reason. If you have never used a

Android development-like QQ setting interface (custom PreferenceActivity)

Today, I would like to share with you the UI layout Implementation of the QQ setting interface. Set the main interface Skin settings page Traffic Statistics page Friend setting interface (in fact, this is not in the setting interface. This ACTIVITY

Android creates a Digital Signature Application

Some people say that android only supports BKS certificates. I do not know whether it is true or false, so I first created a BKS certificate. Steps: 1. Download The bcprov-jdk16-141.jar and put it in the \ jre \ lib \ ext directory 2. Modify the jre6

Android 2.1 source code structure analysis

For Android 2.1 | -- Makefile | -- Bionic (bionic C Library) | -- Bootable (startup guide code) | -- Build (stores basic development kit configurations such as system compilation rules and generic) | -- Cts (Android compatibility test suite Standard)

Draw and save images for Android

Canvas is a Canvas. You can create a blank Canvas and create a new Canvas object without parameters. You can also use BitmapFactory to create a Bitmap object as a parameter for the new Canvas object. That is to say, the Canvas is not blank. If you

Android kernel source code cross-Compilation

1. Use git to download some android kernel source code First, create a directory to save the android kernel source code. MkdirAndroid_kernel CdAndroid_kernel AndroidKernel website GitClone git: //

Ubuntu 10.04 compiling Android 2.1 source code

Preface This article describes how to build a development environment based on the official Google Android 2.1-r2 source code from scratch, including how to download the source code, compile the source code, and run the compiled image in the

Android make sdk error Solution

An error message during compilation contains the following content: Usr/share/pc-bios/bios. bin ............Tools/lib/pc-bios/bios. bin Usr/share/pc-bios/vgabios-cirrus.bin ............Tools/lib/pc-bios/vgabios-cirrus.bin The description is in the

Android Application Interface Design

Address: Compared with iOS, there are various inconsistencies in the Android system interface, and the application interface itself lacks unified specifications. Although the openness of Android has brought the greatest

Android calls from the framework layer to the HAL Layer

Reprinted from: Author: Xandy Working Background: The debugging is a car bluetooth module called goc-md-102, because the bluetooth module can not be directly controlled by HCI, however, it already has a ready-made

Effects of Android Toast

From: Toast is used to display some help/prompts to users. The following is an example of how Toast works. It defines your own Toast. 1. Default Effect Code Toast. makeText

Android init. rc

Source: Excerpted from "detailed explanation of Android system principles and development points" In Android, the startup script init. rc can perform some simple initialization

Android Bluetooth System Analysis

Reprinted from The Android BlueTooth system is divided into four layers: kernel layer, BlueZ library, BlueTooth adaptation library, BlueTooth JNI part, Java framework layer, and

Android Dialog box (Dialog)

Activities provides a dialog box mechanism for convenient management, suchonCreateDialog(int),onPrepareDialog(int, Dialog),showDialog(int),DismissDialog (int) and other methods. If you use these methods, the Activity willThe getOwnerActivity ()

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