android getapplicationcontext

Android Phone Daemon can't close workaround The problem with Android's back-end is entirely due to the Android broadcast system. In simple terms, when a user installs a program, the system will record the function of the program like the interviewer, when the user is using the mobile phone, the system state changes will produce various events, these events need some program to process, the system will send

Android service Summary 1. Start a service using the startservice method. The service cannot start itself. If you start an activity in a service, you must declare a brand new activity TASK. Services started using the startservice method will not die as the startup components die, but will continue to run. Service Life Cycle onCreate () --------> onStartCommand () -----------> onDestroy () After startService () starts a service, if it is time-consumin

[Android performance optimization series] memory basics-how to manage memory for Android, android-android If you like my blog, please pay attention to my Weibo, please click here (http://weibo.com/kifile), thank you Reprinted please indicate the source (http://blog.csdn.net/kifile), thank you again Address: http://de

Android applications are often used to develop Android mobile phone contacts. In Android, listview is usually used to present mobile phone contacts. If you want to achieve full selection using checkbox, the default listview does not seem to solve this problem. In the following steps, you can use a custom layout to select all contacts on your mobile phone. The r

: localStorage has no time limit. sessionStorage stores data for a Session.Js CodeCopy codeThe Code is as follows: WebStorage API:Js CodeCopy codeThe Code is as follows: // clear the storageLocalStorage. clear ();// Set a key valueLocalStorage. setItem ("yarin", "yangfegnsheng ");// Obtain a key valueLocalStorage. getItem ("yarin ");// Obtain the name of the specified underlying key (like Array)LocalStorage. key (0 );// Return "fresh" // delete a key valueLocalStorage. removeItem ("yarin ");Be

Android Http Client Programming getSpeaking of HTTP programming, do not remember the GET and post two request methods, this article with simple and clear steps and instructions, the use of Android in the common HTTP programming methods, to the first on the Android road to start the reference and guidance of the struggling people, Colleagues who want to quickly ge

Android notification syntax, android Write as follows: Public void onCreate () {super. onCreate (); ntfmngr = (icationicationmanager) getSystemService (icationication_service); setNotifyType (R. drawable. logo, "aaaaaaaaaaa", 3);} private void setpolicytype (int icon, String text, int num) {Intent policyintent = new Intent (). setClass (getApplicationContext (),

There are many ways to use global variables in Android, but there are few easy ways to do it, and a good way to do this is to find a video tutorial on the development of the Wheat Academy Android in the previous period:public class MyApp extends application {Private integer[] state;Public integer[] GetState () {return state;}public void SetState (integer[] state) {This.state = State;}@Overridepublic void On

Android: Gravity/Android: layout_gravityDifferences: Android: gravity is used to set the position of the content in the view relative to the view. For example, set the text in the button to the left and center of the view. Android: layout_gravity is used to set the relative position of the view and its parent view. For

[Android] shares a complete project, suitable for beginners !, New to android Before I wrote this app, I read an article in toutiao.com: http://www.manager#.com/post/155110. after all, I want to skip this kind of app so that I can use mobile phone computing. So you can start the process without thinking too much.The project uses three open-source packages: one is image loading: https://github.com/nostra13/

Android: Let's talk about the Toast plot (BASICS) and androidtoast in Android apps. Preface Toast, a pretty girl who has been fascinated by thousands of software developers, especially android Developers, has always appeared frequently in various star applications. Toast is a magic horse ~ I heard it's a kind of toast. can you eat it? If the phone screen is made

As an Android player, to hide and display programs, use Notification to implement switching. The Notification code is as follows: String notificationMessage = (Audio) obj). name_label; Notification notification = new Notification (R. drawable. icon, icationicationmessage, System. currentTimeMillis ()); Try { Intent contentIntent = new Intent (getApplicationContext (), Class. forName ("com. ***. ***. * ***

);BreakCase Requestnotfound://Representative Request succeededToast.maketext (Getapplicationcontext (), "Request resource does not exist", 0). Show ();BreakCase Requestexception://Representative Request succeededToast.maketext (Getapplicationcontext (), "Server Busy please later ....", 1). Show ();BreakDefaultBreak}};};@Overrideprotected void OnCreate (Bundle savedinstancestate) {Super.oncreate (savedinstan

Android project to do more, will find that many of the original things are reusable, this series introduced some of their own projects commonly used in the public module code (of course, only talk about the technology do not talk about business), one to sort out their own later can be directly used, and secondly also share to everyone, hoping to slightly reduce the overtime time for everyone, Improve a little bit of efficiency.The principle and role o

defined, pass the root view object or the layout resource ID to Setcontentview (view).For example, create a dialog box:Create an XML layout custom_dialog.xml:Http://schemas.android.com/apk/res/android " android:id=" @+id/layout_root " android:orientation=" Horizontal " android:layout_width=" fill_parent " android:layout_height=" fill_parent " android:padding = "10DP" >

Android Network request framework AsyncHttpClient instance details (with the JSON parsing call interface), asynchttpclientjson Recently, the project requires the use of the network. I want to choose the AsyncHttpClient framework for APP development. Here we will summarize the problems I encountered during my work and the usage experience of AsyncHttpClient, hoping to help you with your learning. First, follow the conventions to learn more about the As

Import Java.io.BufferedReader; Import Java.io.BufferedWriter; Import Java.io.File; Import Java.io.FileFilter; Import java.io.FileNotFoundException; Import Java.io.FileReader; Import Java.io.FileWriter; Import java.io.IOException; Import Java.util.Map; Import Java.util.UUID; public class HelloWorld {private static final String Android_sdk_home = "Android_sdk_home"; private static final String TAG = " Please configure the Android