添加 AVPlayer

app/src/main/ets/pages/media/AVPlayerPage.ets

@@ -0,0 +1,73 @@
+
+import media from '@ohos.multimedia.media';
+import Prompt from '@system.prompt';
+@Entry
+@Component
+struct  AVPlayerPage{
+
+  setAVPlayerCallback(avPlayer: media.AVPlayer) {
+    // error回调监听函数,当avPlayer在操作过程中出现错误时调用reset接口触发重置流程
+    avPlayer.on('error', (err) => {
+      console.error(`Invoke avPlayer failed, code is ${err.code}, message is ${err.message}`);
+      avPlayer.reset(); // 调用reset重置资源，触发idle状态
+    })
+    // 状态机变化回调函数
+    avPlayer.on('stateChange', async (state, reason) => {
+      switch (state) {
+        case 'idle': // 成功调用reset接口后触发该状态机上报
+          console.info('AVPlayer state idle called.');
+          break;
+        case 'initialized': // avplayer 设置播放源后触发该状态上报
+          console.info('AVPlayerstate initialized called.');
+          avPlayer.prepare().then(() => {
+            Prompt.showToast({
+              message: '加载成功'
+            })
+            console.info('AVPlayer prepare succeeded.');
+          }, () => {
+            console.error(`Invoke prepare failed, code is , message is`);
+          });
+          break;
+        case 'prepared': // prepare调用成功后上报该状态机
+          console.info('AVPlayer state prepared called.');
+          avPlayer.play(); // 调用播放接口开始播放
+          break;
+        case 'playing': // play成功调用后触发该状态机上报
+          console.info('AVPlayer state playing called.');
+          break;
+        case 'paused': // pause成功调用后触发该状态机上报
+          console.info('AVPlayer state paused called.');
+          break;
+        case 'completed': // 播放结束后触发该状态机上报
+          console.info('AVPlayer state completed called.');
+          avPlayer.stop(); //调用播放结束接口
+          break;
+        case 'stopped': // stop接口成功调用后触发该状态机上报
+          console.info('AVPlayer state stopped called.');
+          avPlayer.reset(); // 调用reset接口初始化avplayer状态
+          break;
+        case 'released':
+          console.info('AVPlayer state released called.');
+          break;
+        default:
+          console.info('AVPlayer state unknown called.');
+          break;
+      }
+    })
+  }
+
+  build() {
+    Column(){
+      Button('播放').height(48).width(96)
+        .onClick(()=>{
+          this.playMusic();
+        })
+    }.justifyContent(FlexAlign.Center).align(Alignment.Center).width('100%').height('100%')
+  }
+
+  async playMusic() {
+    let avPlayer: media.AVPlayer = await media.createAVPlayer();
+    this.setAVPlayerCallback(avPlayer);
+    avPlayer.url = "https://www.yyq.cn/audio/audiomp3/f//0b/71f/f0b71f1f52d8cc9b4238e5a1f61a7a0a.mp3"
+  }
+}