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提交 57592568 编写于 作者: P panqiangbiao
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Signed-off-by: Npanqiangbiao <panqiangbiao@huawei.com>
上级 172b48f8
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Showing with 65 addition and 65 deletion
zh-cn/application-dev/reference/apis/js-apis-medialibrary.md
浏览文件 @ 57592568
......@@ -12,7 +12,7 @@ import mediaLibrary from '@ohos.multimedia.medialibrary';
## mediaLibrary.getMediaLibrary
getMediaLibrary(context: Context): MediaLibrary
function getMediaLibrary(context: Context): MediaLibrary
获取媒体库的实例，用于访问和修改用户的个人数据信息。
......@@ -466,8 +466,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -501,8 +501,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -538,8 +538,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -574,8 +574,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -682,8 +682,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -728,8 +728,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -769,8 +769,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -805,8 +805,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -846,8 +846,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -882,8 +882,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -923,8 +923,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -960,8 +960,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -999,8 +999,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -1039,8 +1039,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -1083,8 +1083,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -1120,8 +1120,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -1164,8 +1164,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
const fetchFileResult = await media.getFileAssets(getImageOp);
const asset = await fetchFileResult.getFirstObject();
......@@ -1202,8 +1202,8 @@ async function example() {
let getFileCountOneOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [fileType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,1",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
let fetchFileResult = await media.getFileAssets(getFileCountOneOp);
const fetchCount = fetchFileResult.getCount();
......@@ -1232,8 +1232,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
let fetchFileResult = await media.getFileAssets(getImageOp);
const fetchCount = fetchFileResult.getCount();
......@@ -1269,8 +1269,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
let fetchFileResult = await media.getFileAssets(getImageOp);
fetchFileResult.close();
......@@ -1299,8 +1299,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
let fetchFileResult = await media.getFileAssets(getImageOp);
fetchFileResult.getFirstObject((err, value) => {
......@@ -1335,8 +1335,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
let fetchFileResult = await media.getFileAssets(getImageOp);
fetchFileResult.getFirstObject().then(function(fileAsset){
......@@ -1371,8 +1371,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
let fetchFileResult = await media.getFileAssets(getImageOp);
fetchFileResult.getNextObject((err, value) => {
......@@ -1409,8 +1409,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
let fetchFileResult = await media.getFileAssets(getImageOp);
const fetchCount = fetchFileResult.getCount();
......@@ -1441,8 +1441,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
let fetchFileResult = await media.getFileAssets(getImageOp);
fetchFileResult.getLastObject((err, value) => {
......@@ -1477,8 +1477,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
let fetchFileResult = await media.getFileAssets(getImageOp);
let lastObject = await fetchFileResult.getLastObject();
......@@ -1508,8 +1508,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
let fetchFileResult = await media.getFileAssets(getImageOp);
fetchFileResult.getPositionObject(0, (err, value) => {
......@@ -1552,8 +1552,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
let fetchFileResult = await media.getFileAssets(getImageOp);
fetchFileResult.getPositionObject(1, (err, value) => {
......@@ -1590,8 +1590,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
let fetchFileResult = await media.getFileAssets(getImageOp);
fetchFileResult.getAllObject((err, value) => {
......@@ -1626,8 +1626,8 @@ async function example() {
let getImageOp = {
selections: fileKeyObj.MEDIA_TYPE + '= ?',
selectionArgs: [imageType.toString()],
order: fileKeyObj.DATE_ADDED,
extendArgs: "LIMIT 0,10",
order: fileKeyObj.DATE_ADDED + " DESC",
extendArgs: "",
};
let fetchFileResult = await media.getFileAssets(getImageOp);
var data = fetchFileResult.getAllObject();
......@@ -1883,12 +1883,12 @@ DeviceType
| 名称 | 类型 | 可读 | 可写 | 必填 |说明 |
| ------------- | ------------- | ---- | ---- | ---- |---------------- |
| selections | string | 是 | 是 |是 | 检索条件 |
| selectionArgs | Array&lt;string&gt; | 是 | 是 |是 | 检索条件的值 |
| order | string | 是 | 是 | 否 |检索结果排序方式 |
| selections | string | 是 | 是 |是 | 检索条件，使用[FileKey](#filekey)中的枚举值作为检索条件的列名。示例：<br />selections: mediaLibrary.FileKey.MEDIA_TYPE + '= ? OR' +mediaLibrary.FileKey.MEDIA_TYPE + '= ?‘, |
| selectionArgs | Array&lt;string&gt; | 是 | 是 |是 | 检索条件的值，对应selections中检索条件列的值。<br />示例：<br />selectionArgs: [mediaLibrary.MediaType.IMAGE.toString(), mediaLibrary.MediaType.VIDEO.toString()], |
| order | string | 是 | 是 | 否 |检索结果排序方式，使用[FileKey](#filekey)中的枚举值作为检索结果排序的列，可以用升序或降序排列。示例：<br />升序排列：order: mediaLibrary.FileKey.DATE_ADDED + " AESC"<br />降序排列：order: mediaLibrary.FileKey.DATE_ADDED + " DESC" |
| uri | string | 是 | 是 | 否 |文件URI |
| networkId | string | 是 | 是 | 否 |注册设备网络ID |
| extendArgs | string | 是 | 是 | 否 |扩展的检索参数 |
| extendArgs | string | 是 | 是 | 否 |扩展的检索参数，目前没有扩展检索参数 |
## Size<sup>8+</sup>
......
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