我已经创建了一个保存音频数据的字典数组。用户必须录制这些音频，然后才能收听。问题是这些音频是用一个平面列表表示的，当我在它们之间传递时，它找不到uri。例如:
const [data, setData] = useState(
{uri: null, duration: 0},
{uri: null, duration: 0},
{uri: null, duration: 0}
)
const [index, setIndex] = useState()
const [step, setStep] = useState(0)
const [recording, setRecoding] = useState()
const [sound, setSound] = useState()
const [curDuration, setCurduration] = useState(0)
const [isBuffering, setIsBuferring] = useState(false)
const leftArrow = async () => {
if (index >= 1) {
flatlist.current.scrollToIndex({ animated: true, index: index - 1 })
if (newAudio[index - 1].grabacion != null) {
await sound.unloadAsync()
loadAudio(index - 1)
}
setIndex(index - 1)
};
}
const rightArrow = async () => {
if (index < newAudio.length - 1) {
flatlist.current.scrollToIndex({ animated: true, index: index + 1 })
if (newAudio[index + 1].grabacion != null) {
await sound.unloadAsync()
loadAudio(index + 1)
}
setIndex(index + 1)
}
}
const loadAudio = async (idx) => {
const playbackInstance = new Audio.Sound()
const source = { uri: newAudio[idx].grabacion }
const status = { shouldPlay: isPlaying }
playbackInstance.setOnPlaybackStatusUpdate((status) => { setIsBuffering(status.isBuffering) })
await playbackInstance.loadAsync(source, status, false)
setSound(playbackInstance)
}
const startRecording = async () => {
try {
setStep(1)
console.log('Requesting permissions..');
await Audio.requestPermissionsAsync();
await Audio.setAudioModeAsync({
allowsRecordingIOS: false,
playsInSilentModeIOS: true,
playThroughEarpieceAndroid: false,
staysActiveInBackground: true,
interruptionModeIOS: Audio.INTERRUPTION_MODE_IOS_DUCK_OTHERS,
shouldDuckAndroid: true,
interruptionModeAndroid: Audio.INTERRUPTION_MODE_ANDROID_DUCK_OTHERS,
});
console.log('Starting recording..');
const recording = new Audio.Recording();
await recording.prepareToRecordAsync(Audio.RECORDING_OPTIONS_PRESET_HIGH_QUALITY);
await recording.startAsync();
setRecording(recording);
console.log('Recording started');
} catch (err) {
console.error('Failed to start recording', err);
}
}
const stopRecording = async () => {
console.log('Stopping recording..');
setRecording(undefined);
await recording.stopAndUnloadAsync();
const uri = recording.getURI();
// set the sound
console.log('Loading Sound');
const { sound } = await Audio.Sound.createAsync({ uri: uri });
setSound(sound);
//check the status
let status = await sound.getStatusAsync()
//save uri and duration
updateValues( status.durationMillis, status.uri);
}
const updateValues = (dur, uri) => {
data[index] = {
duration: dur,
grabacion: uri
}
setNewAudio(newAudio)
}
return (
<View>
<Flatlist
data={data}
horizontal={true}
initialScrollIndex={index}
pagingEnabled={true}
scrollEnabled={false}
initialScrollIndex={index}
showsHorizontalScrollIndicator={false}
keyExtractor={(item, index) => index.toString()}
renderItem={(itemData) => {
<View>
<View style={{flexDirection: 'row', justifyContent: 'space-between', alignItems: 'center'}}>
<TouchableOpacity onPress={leftArrow}>
<AntDesign name='arrowleft' />
</TouchableOpacity>
<TouchableOpacity onPress={rightArrow}>
<AntDesign name='arrowright' />
</TouchableOpacity>
</View>
{step == 0 ?
<TouchableOpacity onPress={startRecording()}>
<Fontisto name='mic' />
</TouchableOpacity >
: step == 1 ?
<TouchableOpacity onPress={stopRecording()}>
<MaterialIcons name='stop' />
</TouchableOpacity >
: <TouchableOpacity onPress={HanddlePlayStop()} >
{isPlaying ?
<Fontisto name='pause' />
:
<Fontisto name='play' />
}
</TouchableOpacity >
}
<Slider
disabled={isPlaying ? true : false}
value={curDuration}
minimumValue={0}
maximumValue={itemData.item.duration}
onSlidingComplete={async (value) => {
await sound.setPositionAsync(value)
}}
/>
</View>
}
/>
</View>
)
我得到的问题是，当我按下arrowRight()或arrowLeft()时，如果我们要去的索引已经有记录，它不会识别uri。有人能帮我一下吗?
我能够通过将uri保存在UseState和updateValues函数中来解决这个问题，我将使用uri的UseState变量而不是status.uri更改值获取。出于某种原因，地位。Uri没有正确保存