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First, the installation configuration of the JDKCreate a new folder under the Personal home folder software, under software New Java folder, for storing various Android development programs, my user name AAA, so the full directory is/home/aaa/software/javaThen copy the jdk-7-linux-x64.gz to the/home/aaa/software/java/directory, right-click Unzip, the Jdk-7-linux-x64 file will appear, right-click again to extract the jdk1.7.0 folder, 1-1:Figure 1-1Next

2. Change Activity to a window: Activity attribute settingIt's easy to talk about it. Some people may want to make the app something floating on the main interface of the mobile phone.You only need to set the Activity topic to define the Activity in AndroidManifest. xml.Local sentence: Xml Code Android: theme = "@ android: style/Theme. Dialog"

perform those time-consuming background computing tasks. You can call publishprogress to update the real-time task progress. This method is an abstract method and must be implemented by sub-classes.Onprogressupdate (Progress...), after the publishprogress method is called, UI thread will call this method to display the progress of the task on the interface, for example, display through a progress bar.Onpostexecute (result). After doinbackground is ex

Android Basics Getting Started Tutorial--10.11 sensor Special (2)--direction sensortags (space delimited): Android Basics Getting Started TutorialIntroduction to this section: In the previous section we learned about some of the basic concepts of sensors, and learned about the use of sensor routines,The sensor that this section brings to you is the use o

, notification); Nm.cancel (id_led); How to get the APK file installation time. Many Android developers want to design a APK management program to get the installation date of apk files. Many netizens don't quite understand. The method used in the early Android123 is to return an ApplicationInfo array through the Getinstalledapplications method of the Packagemanager class. SourceDir in the ApplicationInfo class can obtain the APK file path, which

In addition to the ability to return data results from an activity, it is also very common to transmit data to an activity. 1. Create a new project, passdata. 2. Code in Main. xml. [Java]View plaincopy Android: layout_width = "fill_parent" Android: layout_height = "fill_parent" Android: Orientation = "vertical"

backend. There was no problem with Android at the time of debugging, but the server side created the Dynamic web with Eclipse EE, ran the Times wrong, debugging found that Class.forName (constants.dbclass) error, String Dbclass = "Com.mysql.jdbc.Driver", download a com.mysql.jdbc.Driver import to succeed.3, the code reference from the "first line of Android" author Guo Lin's blog: http://blog.csdn.net/guol

Asynchronous explanation of Android Development (2)-AsyncTask I once introduced how to implement asynchronous operations through Thread + Handler in Thread + Handler of asynchronous explanation of Android Development (I. For more information, see. Although Thread + Handler can update the UI of the main Thread and impl

Disclaimer: The book "Secrets of Android Application Development", which records the logs of the book, references the relevant code and summary, and has no commercial use, it is completely a record of self-learning, and many problems will inevitably occur in learning just now. If there are any mistakes, please criticize them a lot. I. Data Storage-SQLite database operations Three data operations have been learned before, and there is also one of the m

The startActivity () method can call another Activity, but this method does not return a result for the current Activity. For example, if you have an Activity that prompts the user to enter the user name and password, and the information entered by the user needs to be "Returned" to the Activity, you need to use the startActivityForResult () method.1. Code in secondactivity. xml.Android: layout_width = "fill_parent"Android: layout_height = "fill_paren

; import android. OS. bundle; import android. OS. handler; import android. OS. message; import android. provider. settings; import android. util. displaymetrics; import android. util. log; import

2.1 create an Android Project Application Name: Application Name (Name displayed on the mobile phone)Project Name: Project NamePackage Name: Package Name Min SDK Version: Minimum running VersionCreate Activity: Main Activity Class Name Minimum Required SDK: Minimum Required sdkTarget SDK: select the Target SDKCompile SDK: Compile the SDKTheme: topicHolo: n. Complete; overallHolo Dark: All blackHolo Light: holographic LightNone (default) 2.2 analyze t

Libgdx Overview Libgdx is a cross-platform 2D/3D Game Development Framework written in Java/C ++. It is based on the Apache license and Version 2.0 protocol and is free for commercial and non-commercial use. Libgdx is compatible with windows, Linux, Max OS X, Java Applet, JavaScript/webgl, and Android [4] (version 1.5 +) platforms. The support for the Android platform is growing in the

1. What are the main differences between Dalvik and standard Java virtual machines? One of the primary differences between Dalvik and the standard Java Virtual Machine (JVM) Is that Dalvik is based on registers while JVM is based on stacks.Another major difference between Dalvik and Java is the runtime environment-Dalvik is optimized to allow running instances of multiple virtual machines in limited memory at the same time, each Dalvik application is executed as an independent Linux Process.(1)

Continue to complete the SDK notepad example. Previously, the functions of the entire example are roughly divided:1. display the note list; 2. Edit, view, and delete the tabs; 3. Edit the tab title; 4. Real-time folder of the tab Program (desktop shortcut creation) [Update] free source code: detailed source code for notepad examples under Android SDK In the prev

Basic tutorial for Android -- 10.11 sensor topic (2) -- orientation SensorBasic tutorial for Android -- 10.11 sensor topic (2) -- orientation Sensor Tags (separated by spaces): basic Android tutorial This section introduces: In the previous section, we learned some basic c