hbuilder打包集成文件预览

<div class="attachments">

<div class="name">附件</div>

<div class="itemFile" v-for="(item,index) in attachments">

<span @click="scanFile(item.url)">{{item.fileName}}</span>

</div>

</div>

scanFile(url){

var vm=this;

var prefixUrl=window.localStorage.prefixUrl;

// var fileURL='http://report.zkteco.com/file/globalservice/pdf/%E9%9B%86%E8%AE%AD%E8%90%A51_%E7%9C%8B%E5%9B%BE%E7%8E%8B_1526894807867.pdf';

var fileURL = prefixUrl+'/file/'+url;

console.log(fileURL);

if(fileURL !=''){

plus.nativeUI.actionSheet({

cancel: 'Cancel',

buttons: [{

title: 'Download the file'

}, {

title: 'OK'

}]

}, function(e) {

var i = e.index;

if(i == 1) {

}else if(i == 2) {

console.log(1002);

plus.nativeUI.showWaiting('');

var localURL = vm.getLocalImg(fileURL);

vm.openfiles(localURL);/*打开文件*/

}else{

}

});

return false;

}

console.log(1003);

},

/*检测文件是否存在并打开*/

openfiles (localURL) {

let vm=this;

console.log(1004);

plus.io.resolveLocalFileSystemURL(plus.io.convertAbsoluteFileSystem(localURL), function(entry) {

plus.nativeUI.closeWaiting();

//              localURL = plus.io.convertLocalFileSystemURL(localURL);

plus.runtime.openFile( plus.io.convertAbsoluteFileSystem(localURL), null, function () {

plus.nativeUI.alert( 'The file could not be opened', function(){}, official, 'OK');

});

}, function(e) {

setTimeout(function() {

console.log(1005);

vm.openfiles(localURL);/*等待图片下载完成*/

},300); 

});     

},

//获取缓存图片

getLocalImg(source){

let vm=this;

if(source == null || source == '' || source == 'undefined'){

return '';

}else if(source.indexOf('../public')==0){

return source;

}

 

source = source.indexOf('http')<0? (webRoot + source) : source;

 

var lastName = source.split('/').pop();

var localName = "_downloads/" + lastName;

plus.io.resolveLocalFileSystemURL(localName, function(entry) {

}, function(e) {

vm.downloadSource(source,localName);

});     

return plus.io.convertLocalFileSystemURL(localName);

},

/*下载图片到缓存*/

downloadSource (source,localName) {

var regChinese = /[\u4E00-\u9FA5]/g;

var tmpLoadUrl = source.replace(regChinese, 'chineseRemoveAfter');

if (tmpLoadUrl.indexOf('chineseRemoveAfter') != -1) {

source = encodeURI(source);

}

var dtask = plus.downloader.createDownload(source,{filename:localName}, function ( d, status ) {

if ( status == 200 ) {

console.log(d.filename);

}else{

console.log('error');

}

});

dtask.start();      

},