root zip file android download

Android Basics Getting Started tutorial--7.5.4 webview file Downloadtags (space delimited): Android Basics Getting Started TutorialIntroduction to this section This section introduces you to the knowledge of WebView download files, when we are using a common browser, such as UC,When we click on a downloadable

Android provides a tool class: Asynctask, which makes it easier to create long-running tasks that need to interact with the user interface. Asynctask is more lightweight than handler, and is suitable for simple asynchronous processing without the need for threading and handter. Asynctask is an abstract class. Asynctask defines three types of generic type params,progress and result:The params input parameter that initiates the task execution, such as t

I have written several articles about downloading. In general, the following points:1, maintenance of a download process Hashmap,key: Using MD5 to process the file, value for the downloaded task.To prevent the download from recurring. and save the information to the database.2, download thread task inherits from Runnab

(Transferred from: http://wenku.baidu.com/view/af39b3164431b90d6c85c72f.html)Seven, the sixth day of Android learning--sqlite and file download Sqlite SQLite is a very small relational database embedded in Android.Summary: When we operateIn the study of SQLite, encountered two questions:(a) If we succeed in setting up the

string dirName =" ";d irname = Environment.getexternalstoragedirectory () + "/mydownload/"; File F = new file (dirName), if (!f.exists ()) {F.mkdir ();}Download the operation://ready to splice the new file name (the file name saved on the memory card) String NewFileName = _

to the description described above. We should be able to know. To achieve the continuation of the breakpoint, the key is to implement the downloaded data stored in the database, and then after our program again into the time, will go to the database to query data. Then continue with the download.While storing data to a database is not too complicated, it is difficult to identify which data is being downloaded. What data is not downloaded. Here, we use the downloaded thread ID to do the identifi

error occurs on the main thread. Observeon (Schedulers.io ()). Observeon (Schedulers.computation () )//need to. Map (NewFunction() {@Override PublicFile Apply (@NonNull responsebody responsebody) throws Exception {returnfiledownloadobserver.savefile (Responsebody, DestDir, fileName); }}). Observeon (Androidschedulers.mainthread ()). Subscribe (Filedownloadobserv ER); } 4 use, as a starting figure DownloadFile ("File

Written in front of the nonsense Download files, almost all apps will use the function! Forget it, or no nonsense, directly open write it ... Simple to use Completion of a download task requires only 4 lines of code, what breakpoint continued, large file download, notice bar progress show .... You don't have to worr

the following operations. I know how to get the sdcard directory, and then we have to create our own files in the directory first. How do I create files? So I won't talk about it. Let's go to the Java basics. After creating the file, we have created the file you want to download in step 2.HttpurlconnectionObject through itsGetinputstream ()You can get the inpu

(buffer)) > 0) {randomfile.write (buffer,0, lenght); Debugtracetool.debugtracee ( This, "file length = =" +randomfile.length ()); } randomfile.close (); Httpget.abort (); } Catch(Exception e) {e.printstacktrace ();}Points to note:1. You need to start a single thread and cannot perform a file download operation on the main thread.2.

Android for multi-threaded download:First look at the following:UI interfaceMulti-threaded download when log print interfaceTo get started, we first connect the files that need to be downloaded through the HttpURLConnection class:New Thread (New Runnable () {@Overridepublic void run () {try {url = new URL (downurl); HttpURLConnection conn = (httpurlconnection) url.openconnection ();//Conn.connect (); totall

Android Network File upload and download tool class Summary 1. Get the last modification time of the file @ SuppressLint ("SimpleDateFormat") public String getFileDataTime (File file) {Date date Date = new Date (

During application development, files are often downloaded and stored to the specified location. On the mobile phone end, the downloaded files are usually stored in the internal storage or external SD card. To download an object, you must declare the required permissions in the androidmanifest. xml file: They are the network connection and external space read and write permissions. Downloading file

Problems encountered:1.java.io.ioexception:open failed:einval (Invalid argument) exception, the SD card in the emulator creates folder and file times wrongThe cause of the error could be: (1) The file name contains non-conforming characters, such as ":", "? "or spaces, and so on. (2) You need to create a folder directory before creating the file, you cannot creat

Run () { Destory = false; state = true; Bufferedinputstream bis = null; Randomaccessfile fos = null; byte[] buf = new Byte[buffer_size]; URLConnection con = null; try {con = url.openconnection (); Con.setallowuserinteraction (TRUE); Set the starting point for the current thread download, end Con.setrequestproperty ("Range", "bytes=" + startposition + "-" + endposition); Con.setrequestproperty ("Accept", "*/

The general idea of multi-thread download is to implement file segmentation through the range attribute, and then use randomaccessfile to read and write the file, and finally merge it into a file. First, let's take a look. Create a project threaddemo First, layout file

. */ ProgressBar PB; TextView TV; int fileSize; int downloadfilesize; String Fileex,filena,filename; Private Handler Handler = new Handler () { @Override public void Handlemessage (msg) {//define a handler for handling the communication between the download thread and the UI if (! Thread.CurrentThread (). isinterrupted ()) { Switch (msg.what) { Case 0: Pb.setmax (fileSize); Case 1: Pb.setprogress (downloadfilesize); int result = Dow

Today, I am writing a program for downloading files and searching for a copy on the Internet to download MP3 files. However, it is found that the downloaded MP3 file is larger than the original file, and there will be noises in the MP3 file. After adding the Log to the Log, we found that the length of the stream obtain

[] buffer =New byte[1*1024];//Stream Read IndexintDownloadnum = 0; //writes an input stream to a file while((Downloadnum = inputstream.read (buffer))! =-1) {output.write (buffer,0, downloadnum);} Output.flush ();When the file is downloaded to the SD card, output.write (buffer); This code is absolutely problematic and causes the file to become corrupted. So take c

(Img_convert_ctx, (const uint8_tConst) Pframe->data, pframe->linesize, 0, Pcodecctx->height,Pframeyuv->data, pframeyuv->linesize);Output to YUV fileAvframe Pixel Frame Write fileImage pixel data decoded by data (audio sampled data)Y brightness UV chroma (compressed) People are more sensitive to brightnessThe number of U V is 1/4 of yy_size=pcodecctx->width*pcodecctx->height;Fwrite (PFRAMEYUV-GT;DATA[0],1,Y_SIZE,FP_YUV); YFwrite (PFRAMEYUV-GT;DATA[1],1,Y_SIZE/4,FP_YUV); UFwrite (PFRAMEYUV-GT;DAT