android getapplicationcontext

Learn android from scratch (ListView data list display component. 21 .)Similar to ScrollView, there is also a list component (ListView) that can add multiple components to the ListView to achieve the scrolling display effect of the component, the ListView component itself also supports the corresponding ListView class. You can operate the ListView class to complete operations on this group of components. The Inheritance structure of the ListView class

database encoding (TUTF-8, UTF-16BE or UTF-16LE)Blob: The value is a blob data block. It is stored in the input data format and stored as input without changing the input format.Data: contains the year, month, and date in the format of XX-XX-XX (that is, year-month-day)Time: Contains hours, minutes, And seconds. Format: XX (that is, hours: Minutes: seconds)Ii. SQLiteDatabase IntroductionAndroid provides APIs for creating and using SQLite databases. SQLiteDatabase is a database object and provid

1. Download the Extract SDK Download the Weibo Android SDK Pack first: Open URL: https://github.com/sinaweibosdk/weibo_android_sdk Download the SDK to the local, unpacked directory structure: Click to enter the "DEMO-SRC" directory, the structure is as follows: Import all two of the above items into eclipse!! 2. Lead Demo to eclipse The file encoding for two items was modified

As for the benefits of Android Studio I don't have to say the following two is enough for you to switch to Android Studio: 1, Android Studio is officially designated by Google, the current official website has been removed from the ADT, you can be in the Android Web site to view, currently only

[1] Android learning notes [the first android program], Android android 1. java JDK configure java System Variables Java JDK Please install it on Baidu Configure java System Variables 1. Open my computer -- properties -- Advanced -- Environment Variables 2. Create System variables JAVA_HOME and CLASSPATH Variable name

Android-the first Android program, android-android Directory structure and functions of Android Projects Directory Function Gen Do not modify automatically generated files Assets Resources needed for custom projects, which canno

Android [android] edition Air Video remote playback of computer videos, Android android In Apple's iOS, there is an application of Air Video, which can remotely play videos in the computer on iOS through Wifi without copying the Video to the mobile phone. Very easy to use! I recently used my

) {// download super. onLoading (count, current); TV _update_info.setVisibility (View. VISIBLE); // current download percentage int progress = (int) (current * 100/count); TV _update_info.setText (download progress: + progress + % );} /*** file t: indicates the File path */@ Override public void onSuccess (file t) {super. onSuccess (t); // install apk installAPK (t) when successful;}/*** install APK * @ param t: file Download path */private void installAPK (File t) {Intent intent = new Intent ()

. println ("whiteList"); callEnd_flag =! IsInWhiteList (incomingNumber); // locate the contact name incomingName = getContactsNameByNumber (incomingNumber) based on the contact number;} // in the blacklist mode, else {incomingName = isInBalckList (incomingNumber ); if (incomingName = null) callEnd_flag = false; else callEnd_flag = true;} // if the time range is enabled, determine whether the current call time is in the specified time range if (spf. getBoolean ("isTime", false) {System. out. prin

I won't say much about what the clipboard is. Here we will only talk about the simplest application and paste general text. Some time ago, I was busy learning things and doing things. In the past few days, my pony spent some time learning official documents. There were too many good things in it. Today I saw clip, but I don't understand it anyway, pony made a demo with shameless curiosity. Let's first note that when using the android clipboard, you on

). show () ;}@ Overridepublic void surfaceCreated (SurfaceHolder arg0) {Toast. makeText (getApplicationContext (), "SurfaceView created", Toast. LENGTH_LONG ). show (); this. thread = new Thread (this); this. thread. start () ;}@ Overridepublic void surfaceChanged (SurfaceHolder arg0, int arg1, int arg2, int arg3) {// The part triggered when SurfaceView changes} @ Overrideprotected void onCreate (Bundle savedInstanceState) {super. onCreate (savedInst

The android Sqlite database of wavelet Linux enables users to log on and register easily !, Android sqlite I read a lot of the operating code of Android SQlite data written by others. They are full of clouds! It is not easy to understand at all. I think it is good to write and the android project is also used, so I wil

. exit_dialog );Layout = (LinearLayout) findViewById (R. id. exit_layout );Layout. setOnClickListener (new OnClickListener (){@ OverridePublic void onClick (View v ){// TODO Auto-generated method stubToast. makeText (getApplicationContext (), "prompt: Click the window to close the window! ",Toast. LENGTH_SHORT). show ();}});}@ OverridePublic boolean onTouchEvent (MotionEvent event ){Finish ();Return true;}Public void exitbutton1 (View v ){This. finish

Error in using java. util. Properties in Android, utilproperties Try to use java today. util. properties to save the application configuration. However, there are several problems that may be the same errors for beginners who are familiar with this content, but it is inevitable that new users like me will encounter it again, I hope this article will be helpful. Error 1 Java. io. IOException: open failed: EROFS (Read-only file system)At java. io. File.

At the end of May this year, Google was completely blocked by the wall, all Google's website can not visit, this time including the android.org,googlesource.com,code.google.com. Android's official resources are inaccessible, and it's certainly difficult to download the Android code. This article is to solve this problem--to explain how to make download from Github.com/andorid andorid the latest source code. As the saying goes, "to give the

. Therefore, you need to put RadioButton in the RadioGroup button group to implementSingle choice function! First, familiarize yourself with how to use RadioButton. A simple example of gender selection:In addition, we can set the orientation attribute for the outer RadioGroup and then set the arrangement of RadioButton, vertical or horizontal ~ : PS: my mobile phone is Android 5.0.1. Here, RadioButton is slightly better than RadioButton of the old v

Summary of screen adaptation in android, android screen adaptation Why screen adaptation? For this reason, I will not talk about it. The online processing method either allows you to use several sets of images with different resolutions, or write several sets of layout files, either write dip in xml (this is acceptable). The first two feelings are that the process is too heavy, and the optimization idea of

Android custom control-title bar reuse and Android control reuse Consistent style, first look, and then implement Compile the custom property file atts. xml. The attributes involved in the custom property include the background image of the buttons on both sides, the content of the middle title, font size, and font color. Write the layout file layout_topbar.xml, and use the relative layout. The left butt

; @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); /** *Set the window no title bar, be sure to setcontentview forward line Set OH * * * * * requestwindowfeature (Window.feature_no_title); Setcontentview (R.layout.gallery); Gallery Gallery = (Gallery) Findviewbyid (r.id.gallery1); Gallery.setonitemselectedlistener (this); Imageswitcher = (imageswitcher) Findviewbyid (R.id.imageswitcher); Imageswitche

A brief introduction of Android studioThe Android Studio IDE (Android Platform integrated development Environment) was first released by the GOOGLEI/O conference in 2013. It is based on the IntelliJ idea development environment and is designed to replace Eclipse and ADT (the Android Developer Tool) to provide developer