hbuilder打包集成文件预览
Posted cx709452428
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<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();
},
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