uni-app,安卓本地文件选择，返回路径

一时失言乱红尘 2022-12-08 01:55 1381阅读 0赞

## 最近在开发一个app，选取本地文件上传 ##

安卓选择本地文件时，需要返回文件路径，然后调用uni-app的上传接口去上传文件。首先是要选择文件，并返回文件路径

// chooseFile.js文件内容
    function chooseFile(callback, acceptType) {
    	//acceptType为你要查的文件类型"image/*"，"audio/*"，"video/*;image/*"  
    	// intent.setType("image/*");
    	//intent.setType("audio/*"); 
    	//选择音频
    	//intent.setType("video/*;image/*"); 
    	//选择视频 （mp4 3gp 是android支持的视频格式）
        var CODE_REQUEST = 1000;
        var main = plus.android.runtimeMainActivity();
        if(plus.os.name == 'Android') {
            var Intent = plus.android.importClass('android.content.Intent');
            var intent = new Intent(Intent.ACTION_GET_CONTENT);
            intent.addCategory(Intent.CATEGORY_OPENABLE);
            if(acceptType) {
                intent.setType(acceptType);
            } else {
                intent.setType("*/*");
            }
            main.onActivityResult = function(requestCode, resultCode, data) {
                if(requestCode == CODE_REQUEST) {
                    var uri = data.getData();
                    plus.android.importClass(uri);
                    var Build = plus.android.importClass('android.os.Build');
                    var isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
    
                    var DocumentsContract = plus.android.importClass('android.provider.DocumentsContract');
                    // DocumentProvider
                    if(isKitKat && DocumentsContract.isDocumentUri(main, uri)) {
                            console.log("版本大于 4.4 ");
                        // ExternalStorageProvider
                        if("com.android.externalstorage.documents" == uri.getAuthority()) {
                            var docId = DocumentsContract.getDocumentId(uri);
                            var split = docId.split(":");
                            var type = split[0];
    
                            if("primary" == type) {
                                var Environment = plus.android.importClass('android.os.Environment');
                                callback(Environment.getExternalStorageDirectory() + "/" + split[1]);
                            } else {
                                var System = plus.android.importClass('java.lang.System');
                                var sdPath = System.getenv("SECONDARY_STORAGE");
                                if(sdPath) {
                                    callback(sdPath + "/" + split[1]);
                                }
                            }
                        }
                        // DownloadsProvider
                        else if("com.android.providers.downloads.documents" == uri.getAuthority()) {
                            var id = DocumentsContract.getDocumentId(uri);
                            var ContentUris = plus.android.importClass('android.content.ContentUris');
                            var contentUri = ContentUris.withAppendedId(
                            //    Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
                            Uri.parse("content://downloads/public_downloads"), id);
                            callback(getDataColumn(main, contentUri, null, null));
                        }
                        // MediaProvider
                        else if("com.android.providers.media.documents" == uri.getAuthority()) {
                            var docId = DocumentsContract.getDocumentId(uri);
                            var split = docId.split(":");
                            var type = split[0];
    
                            var MediaStore = plus.android.importClass('android.provider.MediaStore');
                            if("image" == type) {
                            contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                            } else if("video" == type) {
                            contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                            } else if("audio" == type) {
                            contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
                            }
    
                            var selection = "_id=?";
                            var selectionArgs = new Array();
                            selectionArgs[0] = split[1];
    
                            callback(getDataColumn(main, contentUri, selection, selectionArgs));
                        }
                    }
                    // MediaStore (and general)
                    else if("content" == uri.getScheme()) {
                        callback(getDataColumn(main, uri, null, null));
                    }
                    // File
                    else if("file" == uri.getScheme()) {
                        callback(uri.getPath());
                    }
                }
            }
            main.startActivityForResult(intent, CODE_REQUEST);
        }
    }
    
    function getDataColumn(main, uri, selection, selectionArgs) {
            plus.android.importClass(main.getContentResolver());
            let cursor = main.getContentResolver().query(uri, ['_data'], selection, selectionArgs,
            null);
            plus.android.importClass(cursor);
            if(cursor != null && cursor.moveToFirst()) {
            var column_index = cursor.getColumnIndexOrThrow('_data');
            var result = cursor.getString(column_index)
            cursor.close();
            return result;
            }
            return null;
    }
    
    export default chooseFile
    
    vue页面内容
    <template>
    	<view class="s_page">
    		<view class="container mb40">
    			<view class="form-item flex_ac mb30">
    				<view class="title f24_999">播报名称</view>
    				<view class="flex_ac input-con">
    					<input class="f24_333 flex-1" type="text" placeholder="请输入播报名称">
    				</view>
    			</view>
    			<view class="form-item mb30 flex">
    				<view class="title f24_999">播报内容</view>
    				<view class="input-con area">
    					<textarea class="f24_333" maxlength="150" placeholder="请输入备注信息（150字以内）" />
    					</view>
    			</view>
    			<view class="form-item flex_ac mb30">
    				<view class="title f24_999">播报语音</view>
    				<view id="btn" @tap.stop="addFile" class="btn f24_49C"
    					style="opacity: 0;"
    				>选择文件</view>
    				<view class=" flex mr30">
    					<image class="audio" src="/static/image/audio.png" mode=""></image>
    					<view>
    						<view class="f24_666 mb10">关闭电梯.mp3</view>
    						<view class="f20_999">00:53</view>
    					</view>
    				</view>
    				<text class="f24_49C">重新选择</text>
    			</view>
    		</view>
    		<view class="confirm-btn">添加方案</view>
    	</view>
    </template>
    
    <script>
    	import axios from '@/api/axios.js';
    	import chooseFile from '@/utils/chooseFile.js';
    	export default {
    		data() {
    			return {
    				id:'',
    				report_name:'',
    				content:'',
    				voice_link_id:'',
    				CustomBar:this.CustomBar
    			};
    		},
    		onLoad({id}){
    			this.id = id;
    		},
    		mounted(){
    			
    		},
    		methods:{
    			addFile(){
    				chooseFile((res)=>{
    					axios.uploadImg('file://'+res).then(res=>{
    						console.log(res);
    					});
    				},"audio/*")
    			},
    		}
    	}
    </script>
    
    <style scoped lang="scss">
    .s_page{
    	padding: 20rpx 30rpx;
    	.container{
    		background-color: #FFFFFF;
    		border-radius:10rpx;
    		padding: 20rpx;
    		.form-item{
    			.title{
    				width: 120rpx;
    				flex: 0 0 120rpx;
    			}
    			.audio{
    				width: 44rpx;
    				height: 56rpx;
    				margin-right: 20rpx;
    			}
    			.btn{
    				@include flex_abc;
    				width:140rpx;
    				height:64rpx;
    				border-radius:32rpx;
    				border:2rpx solid rgba(73,205,223,1);
    			}
    			.input-con{
    				height:80rpx;
    				background:rgba(247,247,247,1);
    				border-radius:10rpx;
    				width: 100%;
    				padding:0 20rpx;
    				&.area{
    					height:200rpx;
    					background:rgba(247,247,247,1);
    					border-radius:10rpx;
    					padding: 16rpx 20rpx;
    					textarea{
    						width: 100%;
    						height: 100%;
    						display: block;
    					}
    				}
    			}
    		}
    	}
    }
    </style>
    
    //图片上传方法

![在这里插入图片描述][20200917120323478.png_pic_center]  
重点还是在这张图，返回的路径必须前面带上file://，不然上传失败

转载https://www.cnblogs.com/lizhao123/p/9951581.html

[20200917120323478.png_pic_center]: /images/20221123/21b5bfdd7baf432798ba8ee69e187cc0.png