how to program android

Method One: Many applications will have a startup interface. Welcome to the screen slowly looming, and then slowly fade away. There are two ways to achieve this effect (only two are found temporarily)1, the use of two activity, the program starts load the first activity, and then triggered by tick n seconds after startactivity another activity.2, the use of an activity, you can use the View.gone () this method. Remove some elements from the acitivity

Intent is very common in Android programming, and it has been shown in "Android" to use bundles to transfer values between multiple activity (clicking the Open link) to wake up other activity and pass data between the activity. In fact, the role of intent is far from this, it can also invoke other inherent programs in the system, such as making calls, sending text messages and so on. OnKeyDown is also the c

A few days ago, when I needed to call the binary program in java code, I found some information on the Internet and wrote something to record. Android is also a linux-based system, and can also run binary executable files. However, Android only allows you to install and run the apk file in a direct way. Although NDK can use the binary code of C by means of dynami

This application implements a simple alarm function, and can also be alerted to the alarm clock when the program is closed. A problem is left here : If I close the program by applying itself, I can do what I mentioned above, but if I implement the application shutdown in the phone process management, the reminder doesn't work, and I'm puzzled I've closed the application itself and I can't see it in the p

This is a lot of people will encounter problems, I have tried a lot of methods, are not easy to use.Like what: Copy Code code as follows: System.exit (0); No way.What else to jump to the first activity, while the top of the stack of activity all clear, and finally finish (); Don't know why.Here is a method of my own, the effect is very good.Principle: Registers a broadcast receiver at each activity to receive broadcasts to close the activity. When you need to exit the

Android Development requires the following four tools:1.JDK2.Eclipse3.Android SDK4.ADTSpecific features:1.JDK. The JDK is the Java Development Kit (Java SDK), which includes the Java Runtime Environment, the base Class library, and the Java tools, which are the basis for running Java.2.Eclipse. Eclipse is a software tool for developing Java programs.3.Android SDK

Overview of the directory structure of the HelloWorld program we can see in the folder, the directory of the HelloWorld program mainly includes: Src folder, gen folder, Android folder, assets, res folder, Androidmanifest.xml, Default.properties. Expanding the HelloWorld project on the left side of Eclipse, you can see the directory structure of the following figu

This article describes the Android implementation of the list of software click to start another program function. Share to everyone for your reference, specific as follows: There is a feature in many of the software currently available: Which software is installed in the device, which they will show to the user in the form of a list of software. Today we are going to implement this feature: operating En

Overview of the directory structure of the HelloWorld programWe can see in the folder, the directory of the HelloWorld program mainly includes: Src folder, gen folder, Android folder, assets, res folder, Androidmanifest.xml, Default.properties. Expand the HelloWorld project on the left side of Eclipse to see a directory structure like this:The following sections describe the above levels of directory struct

1, Android Studio Terminal command line invalid problem The command line terminal terminal is brought in from Android studio, but we often find that "XXX" is not an internal or external command, or a running program or batch file, when we enter a command. Such as:This is generally the case that the system environment variables are not configured with the co

Android Network Programming transfer data to the server (i)Please respect other people's labor results, reproduced please specify the source: The Android Network program transmits data to the server (a)because Android the program needs to communicate with the server, so it n

Use the existing SQLite database and androidsqlite In the Android Program In the Chinese search, I did not find a good article about how to use the database I created in advance in the Android Application. So I found this English article on Google and followed its steps, test successful, decided to give this article a rough translation, want to see the original c

How to get your Android program to never be killed by the systemRelated knowledge:In general, in an Android System, when a process is inactive for a long time, or if the system resources are tight, the process may be killed by the system to reclaim some resources. the Android system will selectively kill some processe

Reprinted from Csdn Android Big GodGuo LinReprint Please specify source: http://blog.csdn.net/guolin_blog/article/details/9316683The main content of this article comes from Android Doc, I have done some processing after translation, English good friends can also directly read the original text.Http://developer.android.com/training/displaying-bitmaps/index.htmlLoading large images efficiently we often use a

• Set via XML file The code is as follows Copy Code Translucent Completely opaque Fully transparent The color and opacity (alpha) values are represented by hexadecimal notation. The range of values for any one color is 0 to 255 (00 to FF). 00 indicates full transparency, and FF represents completely opaque. The order of expressions is "AABBGGRR", where aa=alpha represents transparency, Bb=blue (00 to FF), Gg=green (00 to FF), rr=red (00 to FF). • Set by

It is necessary to give a hint before the user exits the application. Because the user may not really want to quit, but only accidentally pressed the return key, most of the application is in the application to quit before giving a dialog, I think this is not very friendly, users have to move their fingers to press dialog button. Personally feel "once again to return the key to exit the program" is best practice, the implementation is also very simple

1. application crash report for Android Turn: http://www.chengyunfeng.com/2010/07/application-crash-report-for-android Will your android program crash! Does a user complain that the program crashes, but you cannot collect detailed information about the crash? Do you want to

We can see that many Android applications have the automatic update function. You can update the software with one click. Thanks to the software package management and installation mechanism of the Android system, this function is quite simple to implement. Let's take a look at it. First, the interface effect is provided: 1. Preparation knowledge The version ID of each

From: http://blog.csdn.net/lfhfut/archive/2010/07/21/5751348.aspx borderless Program Design Concept this formulation comes from here. "Android applications are just virtual and there is no actual entry point. Unlike the application concepts on the Windows platform, Android provides more Components. Highlight requests and services, highlight individual components,

= "@ string/app_name">Android: label = "@ string/app_name"Android: name = ". MyActionBarActivity"Android: theme = "@ android: style/Theme. Holo. NoActionBar">4. Press F11 to re-Debug and you will see that this ActionBar will not be displayed. 5. You can also write code to remove the ActionBar, but this requires the Ac