未验证 提交 f2b82561 编写于 作者: Z zengyawen 提交者: Gitee

update zh-cn/application-dev/media/audio-playback.md.

Signed-off-by: Nzengyawen <zengyawen1@huawei.com>
上级 357a85b0
......@@ -25,6 +25,9 @@
AudioPlayer支持的src媒体源输入类型可参考:[src属性说明](../reference/apis/js-apis-media.md#audioplayer_属性)
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
function SetCallBack(audioPlayer) {
audioPlayer.on('dataLoad', () => { //设置'dataLoad'事件回调,src属性设置成功后,触发此回调
console.info('audio set source success');
......@@ -80,7 +83,18 @@ function printfDescription(obj) {
let audioPlayer = media.createAudioPlayer();
SetCallBack(audioPlayer); //设置事件回调
//2、用户选择音频,设置uri
audioPlayer.src = 'file:///data/data/ohos.xxx.xxx/files/test.mp3'; //设置src属性,并触发'dataLoad'事件回调
let fdPath = 'fd://'
let path = 'data/accounts/account_0/appdata/ohos.xxx.xxx.xxx/01.mp3';
await fileIO.open(path).then(fdNumber) => {
fdPath = fdPath + '' + fdNumber;
console.info('open fd sucess fd is' + fdPath);
}, (err) => {
console.info('open fd failed err is' + err);
}),catch((err) => {
console.info('open fd failed err is' + err);
});
audioPlayer.src = fdPath; //设置src属性,并触发'dataLoad'事件回调
//3、播放音频
audioPlayer.play(); //需等待'dataLoad'事件回调完成后,才可调用play进行播放,触发'play'事件回调
//4、跳转播放位置
......@@ -111,6 +125,9 @@ audioPlayer = undefined;
### 正常播放场景
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
function SetCallBack(audioPlayer) {
audioPlayer.on('dataLoad', () => { //设置'dataLoad'事件回调,src属性设置成功后,触发此回调
console.info('audio set source success');
......@@ -128,13 +145,27 @@ function SetCallBack(audioPlayer) {
let audioPlayer = media.createAudioPlayer(); //创建一个音频播放实例
SetCallBack(audioPlayer); //设置事件回调
/* 用户选择音频,设置uri */
audioPlayer.src = 'file:///data/data/ohos.xxx.xxx/files/test.mp3'; //设置src属性,并触发'dataLoad'事件回调
/* 用户选择视频设置fd(本地播放) */
let fdPath = 'fd://'
let path = 'data/accounts/account_0/appdata/ohos.xxx.xxx.xxx/01.mp3';
await fileIO.open(path).then(fdNumber) => {
fdPath = fdPath + '' + fdNumber;
console.info('open fd sucess fd is' + fdPath);
}, (err) => {
console.info('open fd failed err is' + err);
}),catch((err) => {
console.info('open fd failed err is' + err);
});
audioPlayer.src = fdPath; //设置src属性,并触发'dataLoad'事件回调
```
### 切歌场景
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
function SetCallBack(audioPlayer) {
audioPlayer.on('dataLoad', () => { //设置'dataLoad'事件回调,src属性设置成功后,触发此回调
console.info('audio set source success');
......@@ -152,16 +183,42 @@ function SetCallBack(audioPlayer) {
let audioPlayer = media.createAudioPlayer(); //创建一个音频播放实例
SetCallBack(audioPlayer); //设置事件回调
/* 用户选择音频,设置uri */
audioPlayer.src = 'file:///data/data/ohos.xxx.xxx/files/test.mp3'; //设置src属性,并触发'dataLoad'事件回调
/* 用户选择视频设置fd(本地播放) */
let fdPath = 'fd://'
let path = 'data/accounts/account_0/appdata/ohos.xxx.xxx.xxx/01.mp3';
await fileIO.open(path).then(fdNumber) => {
fdPath = fdPath + '' + fdNumber;
console.info('open fd sucess fd is' + fdPath);
}, (err) => {
console.info('open fd failed err is' + err);
}),catch((err) => {
console.info('open fd failed err is' + err);
});
audioPlayer.src = fdPath; //设置src属性,并触发'dataLoad'事件回调
/* 播放一段时间后,下发切歌指令 */
audioPlayer.reset();
audioPlayer.src = 'file:///data/data/ohos.xxx.xxx/files/next.mp3';
/* 用户选择视频设置fd(本地播放) */
let fdNextPath = 'fd://'
let nextPath = 'data/accounts/account_0/appdata/ohos.xxx.xxx.xxx/01.mp3';
await fileIO.open(nextPath).then(fdNumber) => {
fdNextPath = fdNextPath + '' + fdNumber;
console.info('open fd sucess fd is' + fdNextPath);
}, (err) => {
console.info('open fd failed err is' + err);
}),catch((err) => {
console.info('open fd failed err is' + err);
});
audioPlayer.src = fdNextPath;
```
### 单曲循环场景
```js
import media from '@ohos.multimedia.media'
import fileIO from '@ohos.fileio'
function SetCallBack(audioPlayer) {
audioPlayer.on('dataLoad', () => { //设置'dataLoad'事件回调,src属性设置成功后,触发此回调
console.info('audio set source success');
......@@ -179,7 +236,19 @@ function SetCallBack(audioPlayer) {
let audioPlayer = media.createAudioPlayer(); //创建一个音频播放实例
SetCallBack(audioPlayer); //设置事件回调
/* 用户选择音频,设置uri */
audioPlayer.src = 'file:///data/data/ohos.xxx.xxx/files/test.mp3'; //设置src属性,并触发'dataLoad'事件回调
audioPlayer.loop = true; //设置循环播放属性
/* 用户选择视频设置fd(本地播放) */
let fdPath = 'fd://'
let path = 'data/accounts/account_0/appdata/ohos.xxx.xxx.xxx/01.mp3';
await fileIO.open(path).then(fdNumber) => {
fdPath = fdPath + '' + fdNumber;
console.info('open fd sucess fd is' + fdPath);
}, (err) => {
console.info('open fd failed err is' + err);
}),catch((err) => {
console.info('open fd failed err is' + err);
});
audioPlayer.src = fdPath; //设置src属性,并触发'dataLoad'事件回调
audioPlayer.loop = true; //设置循环播放属性
```
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