how to use imageswitcher in android

2010-06-07Android TabWidget/TabHost usage Article category: Java programmingAndroid TabWidget/TabHost can be used in either of the following ways: First, use the built-in TabHost (and inherit from the TabActivity class) Code as follows:Java code Bytes Android: layout_width = "fill_parent" Android: layout_height = "fill_parent">

Broadcast Receiver Introduction Broadcast receiver is one of the top five components of Android and is used very frequently. Used for asynchronous reception of broadcast intent, broadcast intent sent by calling Context.sendbroadcast (), broadcast Receiver (BROADCASTRECEIVER) to receive broadcast intent asynchronously, The broadcast intent is implemented by calling Context.sendbroadcast (), Context.sendorderedbroadcast (), or context.sendstickybroadca

Most of the people who might have developed Android have used many open source components that have been pulled down, but today the official V4 support Package Swiperefreshlayout feel pretty good, especially to share. Brief introduction:The Swiperefreshlayout component accepts only one subassembly: that is, the component that needs to be refreshed. It uses a listening mechanism to notify listeners owning the component that a refresh event is occurrin

Use of Animations in android Development (2) Use of Animations in android Development (2) This blog post focuses on the use of animation effects in android development. Unlike the previous blog post, the four animation effects are

The most comprehensive use of Android studio tutorialsAndroid Studio is an IDE (integrated development environment) that has not been available for a long time, and is now being distributed free of charge to Google and Android developers. Android Studio is based on IntelliJ idea, which is also a pretty good set of

There are two ways to implement asynchronous task mechanisms in Android, Handler and Asynctask. Handler mode needs to create a new thread for each task, after the completion of the task through the handler instance to the UI thread to send messages to complete the interface update, this way for the entire process of control is more subtle, but also has disadvantages, such as the relatively bloated code, in the simultaneous execution of multiple tasks

attention. If the data returned by the interface tells the client that there is a differential file download, the client uses the child thread download, then performs the incremental update of the merge interface, and then generates the new APK installation package, which completes the incremental update process. Effect First install the app_1.1.apk version of the installation package to the phone, this package is equivalent to your published online version 1.1. Then put the difference file

It's a simple question, but it's always a bit of a problem to use after a certain amount of time. Here is a note of the Logcat steps: 1, in the activity to affirm the tag variable (name is actually casual, as follows: private static final String tag= "Yan";2, when you need to use Logcat output information: LOG.I (Tag, "screen width:" +display.getwidth () + "screen height:" +display.getheight ());3, doub

1. Introduction Recyclerview is a new view group with the goal of providing similar rendering for any adapter based view. It is used as a successor to the ListView and GridView controls and is supported in the latest SUPPORT-V7 version. The Recyclerview architecture provides a plug-and-pull experience, highly decoupled, unusually flexible, and itemanimator achieve stunning results by setting the different layoutmanager,itemdecoration it offers. In short, ListView and the GridView can do the Re

The following error occurred using the Android Studio Packaging application:Note: Some of the input files use or overwrite outdated APIs.Note: For more information, please recompile using-xlint:deprecation.Note: Some input files use an unchecked or unsafe operation.Note: For more information, please recompile using-xlint:unchecked.After compiling to tell me this

This tutorial for you to share the use of the Android Calendar library for your reference, the details are as follows Mainactivity.java Code: Package siso.weekv; Import android.content.Intent; Import android.support.v7.app.AppCompatActivity; Import Android.os.Bundle; Import Android.view.View; public class Mainactivity extends Appcompatactivity { @Override protected void OnCreate (Bundle Savedi

SharedpreferencesIt is used to provide the software parameter setting when the software is developed, the XML file is used to store the data, and the file is stored in the/data/data/ Copy Code code as follows: public void savepreferences(String name, Integer age) { -->> Get sharedpreferences Sharedpreferences preferences = context.getsharedpreferences ("Itcase", context.mode_private); You do not need to specify the XML suffix name of the filename becaus

ObjectiveThere's a lot of interaction with WebView in the recent code, WebView is the browser control in Android, and here's how WebView overloads the Webviewclient class to control URL loading. Using Webviewclientusing Webviewclinet is primarily to inherit the Webviewclient parent class, rewrite the methods as needed, and configure them in WebView, as shown in the sample code: WebView = (WebView) Findviewbyid (R.id.webview); Webview.set

In Android, using String-array is a simple way to extract XML resource file data. Examples are as follows: Put the corresponding data into the Arrays.xml file of the values folder Copy Code code as follows: And then in the activity, use it directly. Resources Res =getresources ();String[] City=res.getstringarray (r.array.city);Can obtain String-array name= "City" under all the item dat

super.dispatchtouchevent (EV); }//Necessary if (GetWindow (). superdispatchtouchevent (EV)) {return true; } edittext.clearfocus (); Edittext.setfocusableintouchmode (FALSE); return ontouchevent (EV); public boolean isshouldhideinput (View V, motionevent event) {if (v!= null (v instanceof edittext)) { Int[] Lefttop = {0, 0}; Get location of TextView V.getlocatioNinwindow (Lefttop); int left = lefttop[0]; int top = lefttop[1]; int bottom = top + v.geth

This article describes the use of DatePicker and Timepicker in Android in an example, as follows: The following is the code that implements the specific functionality, where main.xml code is: Java code is: public class Androiddemo5activity extends activity {//log current time private int year; private int month; private int day; private int hour; private int minute; @Override pr

More and more mobile phones are equipped with auto-focus shooting functions, which also means these mobile phones can have bar code scanning functions ....... the mobile phone has the bar code scanning function, which can optimize the shopping process and quickly store e-business cards (QR codes. This article uses ZXing 1.6 for bar code/QR code recognition. ZXing is a very classic bar code/QR code recognition open source class library, long ago, there are developers on the

Eclipse is an open-source integrated development environment (IDE) that supports multiple technologies. However, this article focuses on Java support, which is also the "mother tongue" of Android applications ". Android is an open-source mobile operating system released by Google. Android has become an operating system for many smartphones and tablets, including

When using a database in Android, in some cases, you need to import a database with data, and then call it in the program to implement our functions. For example, in a small demo of querying the ownership of a credit card, enter the first six digits of the credit card in the input box (these six digits determine the ownership of the credit card), and click the query button, the corresponding bank can be displayed. The data structure in the card table

timer (); Widgetmanager = Appwidgetmanager.getinstance ( Getapplicationcontext ()); task = new TimerTask () {@Overridepublic void Run () {//Update widget interface componentname name = new Compon Entname ("Cn.itcast.mobilesafe", "CN.ITCAST.MOBILESAFE.RECEIVER.PRocesswidget ");//get widgetremoteviews views = new Remoteviews (" Cn.itcast.mobilesafe ", R.layout.process_ Widget),//Get widget layout views.settextviewtext (r.id.process_count, "XXXX");//Set Text Views.settextcolor for Process_count (