Question

do{
  self.camera = getCamera(position: (self.front ? AVCaptureDevicePosition.back : AVCaptureDevicePosition.front))
  self.input = try AVCaptureDeviceInput.init(device: self.camera)
}
catch{
  ...
}
captureSession?.beginConfiguration()
captureSession?.removeInput(captureSession?.inputs[0] as! AVCaptureInput!)
captureSession?.addInput(self.input)
captureSession?.commitConfiguration()

重新 / external / file / 59 ，但我需要 / sdcard / downloads /... +文件名
我需要这个，因为我想得到任何文件的sha-1，md5，...哈希如果我使用“/ external / file / xx”，它会给我一个FileNotFoundException 我已经尝试了一些已经提出的解决方案，但似乎没有一个对我有用或者我不知道如何使用它

Answer 1

Retrurns / external / file / 59

那是因为你没有看Uri的方案。如果方案为getPath()，file 仅具有意义。您很少会获得Uri file计划的content。通常，它会有一个ContentResolver方案，在这种情况下，路径对你来说毫无意义。

我需要这个，因为我想为任何文件获取sha-1，md5，...哈希。

使用openInputStream()和InputStream获取Uri标识的内容InputStream。将<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script> <script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>  <script type="text/javascript"> $(document).ready(function(){ $("li").click(function(){ $("li").animate({backgroundColor:"#F5F5F5"}, "fast"); $("li").css("color", "#676767"); $(this).animate({backgroundColor:"#3A7CD2"}, "fast"); $(this).css("color", "#FFFFFF"); $("#RightContentsContainer").slideUp(300); $("#RightContentsContainer").show("slide", { direction: "left", easing: 'swing'}, 600); }); $("#ListItem1").click(function(){$("#GuildCategoryHeader").hide().html("AFM").fadeIn(500);}); $("#ListItem2").click(function(){$("#GuildCategoryHeader").hide().html("ASA").fadeIn(500);}); $("#ListItem3").click(function(){$("#GuildCategoryHeader").hide().html("Chicago IA/Teamsters").fadeIn(500);}); $("#ListItem4").click(function(){$("#GuildCategoryHeader").hide().html("Commercials").fadeIn(500);}); $("#ListItem5").click(function(){$("#GuildCategoryHeader").hide().html("DGA").fadeIn(500);}); $("#ListItem6").click(function(){$("#GuildCategoryHeader").hide().html("Dues").fadeIn(500);}); $("#ListItem7").click(function(){$("#GuildCategoryHeader").hide().html("Hollywood Basic Crafts").fadeIn(500);}); $("#ListItem8").click(function(){$("#GuildCategoryHeader").hide().html("Hollywood IA").fadeIn(500);}); $("#ListItem9").click(function(){$("#GuildCategoryHeader").hide().html("Labor Contracts").fadeIn(500);}); $("#ListItem10").click(function(){$("#GuildCategoryHeader").hide().html("Other Unions").fadeIn(500);}); $("#ListItem11").click(function(){$("#GuildCategoryHeader").hide().html("National IA").fadeIn(500);}); $("#ListItem12").click(function(){$("#GuildCategoryHeader").hide().html("New York IA/Teamsters").fadeIn(500);}); $("#ListItem13").click(function(){$("#GuildCategoryHeader").hide().html("Non-Affiliate").fadeIn(500);}); $("#ListItem14").click(function(){$("#GuildCategoryHeader").hide().html("Non-Union").fadeIn(500);}); $("#ListItem15").click(function(){$("#GuildCategoryHeader").hide().html("SAG-AFTRA").fadeIn(500);}); $("#ListItem16").click(function(){$("#GuildCategoryHeader").hide().html("San Francisco").fadeIn(500);}); $("#ListItem17").click(function(){$("#GuildCategoryHeader").hide().html("Studio-Specific Contracts").fadeIn(500);}); $("#ListItem18").click(function(){$("#GuildCategoryHeader").hide().html("WGA").fadeIn(500);}); }); </script> <style type="text/css"> a li{text-decoration: none;color:#676767;} #guildlinesDiv{border: 2px solid #5A7EAD !important;} #FAQDiv{border: 2px solid #5A7EAD !important;} #headlinesDiv{border: 2px solid #5A7EAD !important;} #contractsDiv{border: 2px solid #5A7EAD !important;} #archivesDiv{border: 2px solid #5A7EAD !important;} #ListItem1{background-color:#3A7CD2;color:#FFFFFF;} #ListItem2{background-color:#F6F8FE;} #ListItem3{background-color:#F6F8FE;} #ListItem4{background-color:#F6F8FE;} #ListItem5{background-color:#F6F8FE;} #ListItem6{background-color:#F6F8FE;} #ListItem7{background-color:#F6F8FE;} #ListItem8{background-color:#F6F8FE;} </style> <div id="LeftHandAbsoluteMenuContainer" style="position: relative; top: 0px; left:15px; height:380px; width:290px "> <img src="https://epwork.ep.corp/bu/legal/private/LaborRelations/Images1/DropDownArrow.png" style="position: absolute; top: 7px; left:18px; height:28px;width:28px; z-index: 1;"/> <p style="position: absolute; top: 9px; left:76px; z-index: 1; font-size: 17px;">Select Category</p> <ul style="position: absolute; top: 41px; left:-18px; width: 245px; z-index: 1; font-size: 14px; list-style-type: none;"> <a style="text-decoration:none;" href="#"><li id="ListItem1">AFM</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem2">ASA</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem3">Chicago IA/Teamsters</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem4">Commercials</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem5">DGA</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem6">Dues</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem7">Hollywood Basic Crafts</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem8">Hollywood IA</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem9">Labor Contracts</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem10">Other Unions</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem11">National IA</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem12">New York IA/Teamsters</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem13">Non-Affiliate</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem14">Non-Union</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem15">SAG-AFTRA</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem16">San Francisco</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem17">Studio-Specific Contracts</li></a> <a style="text-decoration:none;" href="#"><li id="ListItem18">WGA</li></a> </ul> <img src="https://epwork.ep.corp/bu/legal/private/LaborRelations/Images1/CurvedCornerRectangle.png" style="position: relative; top: 0x; left:0px; height:41px;width:290px;"/> <img src="https://epwork.ep.corp/bu/legal/private/LaborRelations/Images1/CurvedCornerSquare.png" style="position: relative; top: 0px; left:0px; height:332px;width:290px;"/> </div> <p style="position: absolute; left:335px; top:118px; width:505px; font-size: 14px;">This site is designed to provide access to Labor Contracts and Payroll Guidelines. We are always looking for ways to provide better tools to facilitate our work. Please send any suggestions to <a href="mailto: RPucher@ep.com?Subject=Labor%20Relations%20site%20suggestions">Bob Pucher</a>.</p> <p id="GuildCategoryHeader" style="position: absolute; left:352px; top:182px; width:445px; font-size: 14px; font-weight:bold;text-align:center;color:#215582">AFM</p> <div id="RightContentsContainer" style="position: absolute; left:342px;top:216px; height: 310px;" > <div id="contractsDiv" style="float: left; height:116px; margin-left:10px; text-align: center;"> <div style="height:24px; font-size: 16px; margin-top: 2px;color:#215582;">Contracts</div> <img style="margin-top: -2px;" src="/bu/legal/private/LaborRelations/Images1/contract.jpg" alt=""/> </div> <div id="guildlinesDiv" style="float: left; height:116px; margin-left:20px; text-align: center;"> <div style="height:24px; font-size: 16px; margin-top: 2px; color:#215582;">Guidelines</div> <img style="margin-top: -2px;" src="/bu/legal/private/LaborRelations/Images1/guidelines.jpg" alt=""/> </div> <div id="archivesDiv" style="float: left; height:116px; margin-left:20px; text-align: center;"> <div style="height:24px; font-size: 16px; margin-top: 2px;color:#215582;">Archives</div> <img style="margin-top: -2px;" src="/bu/legal/private/LaborRelations/Images1/archive.jpg" alt=""/> </div>传递给your hashing algorithm。

Android从Uri获取真实的路径和文件名

1 个答案: