How does the multi-threaded download of "android face question" be implemented? How do I implement a breakpoint continuation?

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Frame {display:block; overflow:hidden; } Span.frame > span {border:1px solid #dddddd; display:block; float:left; overflow:hidden; MARGIN:13PX 0 0; padding:7px; width:auto; } span.frame span img {display:block; float:left; } span.frame span span {clear:both; Color: #333333; display:block; padding:5px 0 0; }span.align-center {display:block; overflow:hidden; clear:both; } Span.align-center > span {display:block; overflow:hidden; MARGIN:13PX Auto 0; text-align:center; } span.align-center span img {margin:0 auto; text-align:center; }span.align-right {display:block; overflow:hidden; clear:both; } Span.align-right > span {display:block; overflow:hidden; MARGIN:13PX 0 0; text-align:right; } span.align-right span img {margin:0; text-align:right; }span.float-left {display:block; margin-right:13px; overflow:hidden; float:left; } span.float-left span {mARGIN:13PX 0 0; }span.float-right {display:block; margin-left:13px; overflow:hidden; float:right; } Span.float-right > span {display:block; overflow:hidden; MARGIN:13PX Auto 0; text-align:right; }code, TT {margin:0 2px; padding:0 5px; white-space:nowrap; BORDER:1PX Solid #eaeaea; Background-color: #f8f8f8; border-radius:3px; }pre Code {margin:0; padding:0; white-space:pre; border:none; background:transparent; }.highlight Pre {background-color: #f8f8f8; BORDER:1PX Solid #cccccc; font-size:13px; line-height:19px; overflow:auto; PADDING:6PX 10px; border-radius:3px; }pre {background-color: #f8f8f8; BORDER:1PX Solid #cccccc; font-size:13px; line-height:19px; overflow:auto; PADDING:6PX 10px; border-radius:3px; } Pre code, pre TT {background-color:transparent; border:none; }sup {font-size:0.83em; vertical-align:super; line-height:0;} * {-webkit-print-color-adjust:exact;} @media screen and (min-width:914px) {body {width:854px; margin:0 auto; }} @media print {table, pre {page-break-inside:avoid;} Pre {word-wrap:break-word;}} --></style><style>!--/** * prism.js default theme for JavaScript, CSS and HTML * Based on dabblet (http://dabblet.com) * @author Lea Verou */code[class*= "language-"],pre[class*= "language-"] {color:black;background:none;text-shadow:0 1px white; font-family:consolas, Monaco, ' Andale mono ', ' Ubuntu mono ', monospace;text-align:left;white-space:pre;word-spacing: normal;word-break:normal;word-wrap:normal;line-height:1.5;-moz-tab-size:4;-o-tab-size:4;tab-size:4;- webkit-hyphens:none;-moz-hyphens:none;-ms-hyphens:none;hyphens:none;} pre[class*= "language-"]::-moz-selection, pre[class*= "language-"]::-moz-selection,code[class*= "language-"]::- moz-selection, code[class*= "language-"]::-moz-selection {text-shadow:none;background: #b3d4fc;} pre[class*= "language-"]::selection, pre[class*= "language-"]:: selection,code[class*= "language-"]::selection, Code [class*= "language-"]:: Selection {text-shadow:none;background: #b3d4fc;} @media print {code[class*= "language-"],pre[class*= "language-"] {text-shadow:none;}} /* Code blocks */pre[class*= "language-"] {padding:1em;margin:. 5em 0;overflow:auto;}:not (pre) > code[class*= "language- "],pre[class*=" language-"{background: #f5f2f0;} /* Inline Code */:not (pre) > code[class*= "language-"] {padding:. 1em;border-radius:. 3em;white-space:normal;}. Token.comment,.token.prolog,.token.doctype,.token.cdata {color:slategray;}. Token.punctuation {color: #999;}. Namespace {opacity:. 7;}. token.property,.token.tag,.token.boolean,.token.number,.token.constant,.token.symbol,.token.deleted {color: #905 ;}. token.selector,.token.attr-name,.token.string,.token.char,.token.builtin,.token.inserted {color: #690;}. Token.operator,.token.entity,.token.url,.language-css. token.string,.style. token.string {color: #a67f59; Background:hsla (0, 0%, 100%,. 5);}. Token.atrule,.token.attr-value,.token.keyword {color: #07a;}. Token.function {color: #DD4A68;}. Token.regex,.token.important,.token.variable {color: #e90;}. Token.important,.token.bold {font-weight:bold;}. Token.italic {font-sTyle:italic;}. Token.entity {cursor:help;} --></style><style><style><!--pre.line-numbers {position: relative;padding-left: 3.8em;counter-reset: linenumber;}pre.line-numbers > code {position: relative;}.line-numbers .line-numbers-rows {position: absolute;pointer-events: none;top: 0;font-size: 100%;left: -3.8em;width: 3em; /* works for line-numbers below 1000 lines */letter-spacing: -1px;border-right: 1px solid #999;-webkit-user-select: none;-moz-user-select: none;-ms-user-select: none;user-select: none;}.line-numbers-rows > span {pointer-events: none;display: block;counter-increment: linenumber;}.line-numbers-rows > span:before {content: counter(linenumber);color: #999;display: block;padding-right: 0.8em;text-align: right;}--></style></style>Xutils Plug-in<p><p>The simplest method--use of the <code>xUtils</code> <code>HttpUitls</code> download file, support multi-threaded breakpoint download</p></p><p><p>Https://github.com/wyouflf/xUtils</p></p><p><p>How to Use:</p></p><pre class="line-numbers"><code class="language-none"><code class="language-none">httputils http = new Httputils (); HttpHandler handler = Http.download ("http://apache.dataguru.cn/httpcomponents/httpclient/source/ Httpcomponents-client-4.2.5-src.zip ","/sdcard/httpcomponents-client-4.2.5-src.zip ", true,//if the destination file exists, Then the unfinished section continues to Download. The server does not support range when it is newly downloaded. true,//if The file name is obtained from the request return information, it is automatically renamed after the download is Complete. New requestcallback<file> () {@Override public void OnStart () {testtextview.settext ("conn. .."); } @Override public void Onloading (long, long, boolean Isuploading) {testtextview.settext (CU Rrent + "/" + total); } @Override public void onsuccess (responseinfo<file> Responseinfo) {testtextview.settext (" Downloaded: "+ ResponseInfo.result.getPath ()); } @Override public void OnFailure (httpexception error, String msg) {testtextview.settext (msg); }});//call the Cancel () method to stop downloading Handler.cancel (); .... </code></code></pre>Implementing multi-threaded Breakpoint downloads using the HTTP protocol<p><p>Multithreading Implementation Ideas:</p></p> <ol> <ol> <li>Send an HTTP GET request to</li> <li>Gets the total length of the file, creating temporary files such as file lengths</li> <li>Calculates the start and end positions of each thread by dividing the total length of the file by the number of threads</li> <li>Turn on multi-threading and start downloading data by location</li> <li>The location of the temporary file where the downloaded data exists</li> </ol> </ol><p><p>Add Breakpoint</p></p> <ol> <ol> <li>Download the current total download length using an int variable record</li> <li>Save this variable in a temporary file while downloading</li> <li>The next download takes that location as the starting point for the Download.</li> <li>Delete temporary files after download</li> </ol> </ol><p><p>Detailed implementation Steps See: http://blog.csdn.net/guanhang89/article/details/51346790</p></p><p><p></p></p><p><p>How does the multi-threaded download of "android face question" be implemented? How do I implement a breakpoint continuation?</p></p></span>