view hidden files on android

cropping a mixed graphHere are the custom Customtitleview.java files: public class CustomView extends View {private Paint mpaint;//brush Private Context mcontext;//Contextual environment reference private Bitmap Bitmap; Bitmap private int x,y;//bitmap is drawn when the upper-left corner of the start coordinates public customview (context context) {Super (context, NULL);} Public CustomView (context cont

Fos=NULL; Try { //files are copied to SD cardFIS =NewFileInputStream (DBFile); FOS=NewFileOutputStream (Environment.getexternalstoragedirectory (). GetAbsolutePath () + "/copy.db"); intLen = 0; byte[] buffer =New byte[2048]; while( -1!= (len=fis.read (buffer))) {fos.write (buffer,0, Len); } fos.flush (); } Catch(Exception e) {e.printstacktrace (); }finally { //Turn off Data flow Try { if(Fos! =N

without blocking the main thread, but only one request can be processed at the same time.After knowing the instructions of Intentservice, we continue to look at the code, first look at the definition of Intentservice member variables, the code is as follows:Provides Message Queuing and private volatile Looper mservicelooper;//processing messages private volatile Servicehandler mservicehandler;// Represents the worker thread's name private String mname;//whether to resend Intentprivate Boolean M

In Android, AsyncTask downloads files in the background and displays the download progress from the drop-down menu. androidasynctask During development, you always need to download files from the network, and sometimes you need to display the download progress in the drop-down menu. Now I have written a Demo that encapsulates the code for downloading

. Because Android is a mobile operating system platform, if we open the analogy more, will occupy the system resources, resulting in slow system. Therefore, as far as possible to reduce the interface or class definition, but also to do as far as possible the readability of the program is better. Launch the simulator and deploy our program. Enter the filename and file contents and click Save. Where is the file saved on

Baidu Cloud software users to the detailed analysis to share the Baidu cloud Android version to see the transmission progress of the method. Method Sharing: Baidu Cloud Android Version View transmission Progress method: Click on "Transfer List" to view the download list, you can

· Sometimes using the Android simulator to simulate SD card related operations, in Eclipse can directly view the SD card directory;First, the new simulator to create the SD card, the size of the storage as needed to create;Launch the emulator to open the view window in eclipse: Window--show view--file Explorer;You can

In the case of database operations, the execution of operations statements such as queries or deletions often fails, but there is no specific reason for finding them. The following is a command-line way to perform database operations to verify that the database operation statements in Android are correct, and so on.The following are the steps:(1) Enter into the console, enter the ADB shell, into the command mode environment;(2) Input command: cd/data/

="fill_parent"> 6 7 android:layout_width="fill_parent" 8 android:layout_height="wrap_content" 9 android:lines="4"/>10 11 android:layout_width="wrap_content"12 android:layout_height="wrap_content" 13 android:text="@string/write"/>14 15 android:layout_width="fill_parent"16 android:layout_height="wrap_content"17 android:editable="false"18 android:cursorVisible="false"19 android:lines="4"/> 20 21 android:layout_width="wrap_content"22 androi

Hello everyone, we are going to use Android mediaplayer today Step 1: Preparation work. Mksdcard 512 M sdcard. img Create a new AVD named androidsdcard Push songs into sdcard (before you push, you make sure your AVD is running, else the operation of push will not work ): ADB push F:/music/1.mp3/sdcard Step 2: Layout UI desigen: Create two. xml files we called song_item.xml and songlist. xml the Cod

The friendly visual perception and stable and error-free performance come from our pursuit of aesthetics and comprehensive consideration. I have always enjoyed it from a technical point of view.This article is a must-have knowledge for android Developers. It is specially compiled and summarized for everyone. It is not perfect but useful. This article is about 《Android Learning Series (2) -- download in the

(R. id. selectImage); uploadImage = (Button) this. findViewById (R. id. uploadImage); SelectImage. setOnClickListener (this); uploadImage. setOnClickListener (this); imageView = (ImageView) this. findViewById (R. id. imageView) ;}@ Override public void onClick (View v) {switch (v. getId () {case R. id. selectImage:/***** this is the built-in android intent called to filter image

We know that data interaction between two Android applications requires contentprovider, which is usually a database operation.Today, the project needs to use the contentprovider of Android to interact with files on the normal SD card, so I wrote this small example:Androidmanifest. xml Testcontentprovider. Java Package COM. h3C. test; import Java. io. file; impo

Previous Blog Handler principle of Android in the H when the Andler When it comes to how Android's activity boot works to the OnCreate method, This article mainly from the OnCreate method we need to write the method Setcontentview start, study how layout view is loaded into the mobile phone form. When you run to Setcontentview, you are actually running thepublic void Setcontentview (int layoutresid) {

When the SQLite database is created, how do you view the contents of the database? If you use File Explorer directly, you can only see a bookstore.db file that appears under the database directory, and the Book table cannot be seen through the file explorer.I will briefly describe how two SQLite databases are viewed to check the creation of databases and tables.-----------------------------------the Database visualization tool ------------------------

on it, in fact, this method I feel more than the computer export database in the view is also fast, really do not accidentally inserted Liu-shady ~ ~ Here is a mouth, every app in the phone has clear cache, clear the data, here to say, clear the cache is it? The red path above the database in a folder called cache content to clear out, the general cache content will be placed here, Clearing the data clears all fi