Use eclipse to develop Android source code
The tool chain and development tools provided by Android are relatively complete, so the development environment is relatively simple. I believe many of my friends have already set up th
Prior to learning Oracle, simply that the database exists only on the server side, learning Android only to find that Android and iOS themselves are "carry" the database--sqlite, is a lightweight, embedded, relational database, is Android, A widely used database system such as iOS. Used to store the local state. Just write a realization of the function of the new
The example of this article describes the Android development of the Sqlite3 command line simple use method. Share to everyone for your reference, specific as follows:
First you need to navigate to the directory where the database is located, and then use the command sqlite3 databasename (the name of the db) to enter
Common commands:
1. Table lists the data ta
Four main components of Android Application series-use ContentProvider for cross-process communication and four major components of android
I. Problem Description
In Android, how does one implement communication between different applications (called across processes )?
have their own advantages and disadvantages, and we need to use them for different situations.
1. Use the Parcelable interface when more memory is required.
Serializable produces a large number of temporary variables when serialized, causing frequent GC, compared to parcelable performance (after all, Android), so when using memory ( For example, serializing an
Recently things have been very busy, a new project to rush out, but many functions have to redo, has been writing code, Debug. Today, because a new program to use fragment to do, although the previous use of fragment, but did not study carefully, today by writing an article to record the use of fragment. This article mainly refers to the introduction of the
There are many useful tools in the Android SDK Kit to help programmers develop and test Android apps, and improve their productivity dramatically. One of the visual debugging tools called Hierachy Viewer can easily help developers analyze, design, debug and adjust UI interfaces to improve development efficiency. This article will be a practical example of how to use
How to Use Android Bluetooth (Bluetooth details) and Android bluetoothI. Communication between bluetooth devices consists of four processes.
Configure a bluetooth device to search for devices that may match in the LAN to connect to data transmission between devices.
Ii. completion of detailed programming
1. Activate Bluetooth
First, call the static method getdefa
Use Bluetooth in the Android command line and Bluetooth in the android command line
Note: This part only applies to broadcom series bluetooth chips, such as RK903 and AP6xxx Series
Switch to the root user using the su command
1. confirm that the RFKILL driver has been loaded.
Ls/sys/class/rfkill/rfkill0/
If the rfkill0 directory is not found, the Bluetooth driver
1. In Android Studio, click the Run menu, then click Edit Configurations ... 2. In Defaults/android application, set the target Device to Show Chooser dialog 3. Select Use same device for the future launches. Another way to add a toolbar button to open vs Emulator 1.file>settings>external Tools 2.Click ADD 3. In the Create Tool Dialog, enter a name and descriptio
The examples in this article describe how to use post requests in Android. Share to everyone for your reference. Specifically as follows:
One, need to use the scene
Using $.post () in jquery makes it easy to initiate a POST request, and sometimes you have to get some data from the server in the Android program, and y
Hello everyone, let's briefly talk about the android status bar reminder, which will also be used frequently during development. When we plug in USB, there will be a status bar reminder, and a text message will also contain a status bar reminder.
Alertdialog can also be used if there is a reminder function in Android, but we need to review the usage, because when using alertdialog, the user's ongoing operat
Android of android Animation: Use of the interpolator attribute,
Android: interpolator for android Animation
Interpolator is used to modify the animation effect, define the animation change rate, and enable the existing animation effects such as accelerated, decelerated,
Recently in writing an application, want to put the Settings page and application page together, so that users can see their settings in real time to the impact of the UI, so more convenient to set the user's favorite interface. After a while, I found that this effect can be achieved by using the Slidingdrawer control. Which is a drawer. Pull open the drawer, occupy half of the screen, the other half of the screen or display application page. The effect is still good.
Share with you today the e
Android system transplantation and driver development-Chapter 6-use instances to understand Linux driver development and experiences, and android driver development
The operating method of the Linux driver is interaction. For example, if you want to send a print command to the Linux printer driver, you can directly use
The use of embedded relational SQLite database storage data
On the Android platform, an embedded relational database is integrated--sqlite,sqlite3 supports NULL, INTEGER, real (floating-point numbers), text (string literals), and BLOB (binary object) data types, although it supports only five types, In practice, however, Sqlite3 also accepts data types such as varchar (n), char (n), decimal (p,s), except t
0 and 1 are the basis of the computer, in mathematical logic, 0 and 1 represent two states, true and false. 0 and 1 seem simple, in fact, infinitely different. Today I'm going to talk about the Magic control checkbox with 0 and 1 features in the Android control.
Let's talk about the basic use of a checkbox. defined in XML.
Use in activity
C
MMS in Android to MMS (multimedia messaging Service) The operation of the MMS protocol is done through the APIs provided in frameworks: Com.google.android.mms This package is not open in the SDK and can only be used by internal programs, encapsulating all the APIs required by MMS.
This package is the implementation of the MMS protocol in Android, including some data structures: genericpdu,multimediamessagep
Interview question: Specify a background map for a linearlayout layout that fills the entire screen. Is it enough to make the background map not fill the screen? Please describe the implementation process in code description.Solve the problem. You can use an embedded (Inset) image resource to specify an image and then use an embedded image resource as you would with a normal image resource.The syntax is as
using Jd-gui to decompile Android codeThis address: Http://blog.csdn.net/caroline_wendyAndroid Program bug , you need to rely on the bug to find out where the problem occurs;need to use tools dex2jar.sh and Jd-gui, and add dex2jar.sh into the system path;Change the APK package that you need to decompile into a zip file, unzip it, and find the ". Dex" File, "Classes.dex";
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