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[Android Notes] Android calculates the folder size, deletes all files in the folder, and android notes 1. Get the folder size: 1/** 2 * Get the folder size 3 * @ param file File instance 4 * @ return long 5 */6 public static long getFolderSize (java. io. file file) {7 8 long

Android learning notes (1): basic concepts, android learning notes This article is referenced in Android development tutorials Notes Android concept:

[Android Notes] use and implementation of the pull-down and refresh components and Android notes drop-down ComponentsIf you need to implement pull-down refresh in a project, you can choose from the following options:1. Use the open-source library Android-pullToRefresh.2. Use

Android learning notes-use of remote services and android learning notes --1. AIDL and Binder The Activity, Content Provider, Broadcast, and Service components of the Android system can transmit data across processes. Activity can call the activities of other processes impli

remaining capacity of the SD card. • Layout file: Java code: Package com.bokeyuan.getsdavail; Import Java.io.File; Import Android.os.Build; Import Android.os.Bundle; Import android.os.Environment; Import Android.os.StatFs; Import android.app.Activity; Import Android.text.format.Formatter; Import Android.view.Menu; Import Android.widget.TextView; public class Mainactivity extends activity {@Override protected void onCreate (Bundle savedinstancestate) {super.oncreate (savedins

[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 va

Android learning notes: internal storage of data; practice Data Reading and writing; storage to Cache for reading and writing; android learning notes (1) directory structure (2) Layout file: (3) tool class for saving and reading data: FileService. java Package com. example. data_storage_interal.file; import java.

Android learning notes (Broadcast Mechanism) and android learning notes 1. Introduction to the broadcast mechanism of Android Listening to a radio is also a kind of broadcast. There are many radio stations in the radio, and the content played by each radio station is differe

Old Deng's android Study Notes (2)-Android gets screen resolutions in N ways, android-android Android gets the screen resolution Method 1: the simplest method 12 intscreenWidth=getWindowManager().getDefaultDisplay().ge

Use of Menu level 1 Menu and level 2 Menu of Android learning notes, and android learning notes (1) No changes have been made to the layout file. (2) the code in the main. xml file under the res -- menu directory is as follows: (3) In the string. xml file under the values directory: (3) The MainActivity. java code

Android learning notes (1) Development Environment establishment, android learning notes Build an Android Development Environment Install JDK1. If you do not have JDK, you can go to the http://www.oracle.com/technetwork/java/index.html here, the next job is to install tips

Android cainiao Study Notes 4 ---- android project structure, cainiao notes Src: Application source code storage directory Gen: Automatically Generated Directory, which stores all files automatically generated by Android development tools. The most important part in the dire

Android learning notes-Menu (2), android learning notes Knowledge point: This time, we will continue the learning of menus not finished in the previous article, Context Menu and pop-up menu ). Context Menu The Context Menu provides operations on specific items or context frameworks on the UI interface, just like

Study android Development notes and android Development notes Recently, I have focused on the source code of several android projects and have some questions. 1: Why do android client games need to enable n threads, and generall