轻松理解我的问题的方式,播放以下视频,看看有什么问题。 https://vimeo.com/315390850
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我将更新气泡消息,但我不知道如何通过ID更新特定消息。 示例:在html中,列表中的每个标记都有一个ID,如果必须更新,则可以通过id选择它,然后对其进行更新。 那么,如何为“ react-native-gifted-chat”气泡消息建立这样的概念?
我尝试将refs与setNativeProps函数一起使用,但没有用。
render(){
return (
<GiftedChat
extraData={this.state}
messages={this.state.messages}
onSend={messages => this.onSend(messages)}
user={{
_id: this.state.userId,
}}
renderBubble={this.renderBubble}
renderInputToolbar={this.renderInputToolbar.bind(this)}
/>
);
}
renderBubble = props => {
if (props.currentMessage.audio) {
return (
<View style={[{ width: 150, height: 70, backgroundColor: 'lightgray' }, props.position === 'left' ? { left: -41 } : {}]}>
<EIcon
name="google-play"
size={30}
color={this.state.playAudio ? "red" : "blue"}
style={{
left: 90,
position: "relative",
shadowColor: "#000",
shadowOffset: { width: 0, height: 0 },
shadowOpacity: 0.5,
backgroundColor: "transparent"
}}
onPress={() => {
this.setState({
playAudio: true
});
const sound = new Sound(props.currentMessage.audio, "", error => {
if (error) {
console.log("failed to load the sound", error);
}
const duration = sound.getDuration();
const progressPhase = 1 / duration;
if (duration !== 0) {
this._interval = setInterval(() => {
this.setState({
progress: this.state.progress += progressPhase
});
if (this.state.progress >= 1) {
clearInterval(this._interval);
this.setState({
progress: 0.0,
playAudio: false
});
}
}, 1000);
}
sound.play(success => {
console.log(success, "success play");
if (!success) {
Alert.alert("There was an error playing this audio");
}
});
});
}}
/>
<Progress.Circle progress={this.state.progress} showsText size={35} />
</View>
);
} else {
return (
<Bubble
{...props}
textStyle={{
right: {
color: '#fff',
},
left: {
color: '#fff',
},
}}
wrapperStyle={{
left: {
backgroundColor: "orange",
left: -41
},
right: {
backgroundColor: 'green'
}
}}
/>
);
}
}
在这里,当我发送多个音频消息(例如3 aduio消息)时,我有一个聊天框:音频消息.1,音频消息.2,音频消息.3 aduio消息.1是第一次出现。 aduio消息.3上次出现。
每条音频消息都有一个播放图标和一个进度栏。 当我点击播放图标时,我将更新进度条。 在这里,我使用间隔来单击播放图标,进度条会多次更新直到完成。
我的问题是:当我单击音频消息.1的播放图标时,只会更新最后一个音频消息.3。 我想要:如果我单击音频消息.1,则应更新音频消息.1的进度栏。音频消息.2和音频消息.3。相同。
答案 0 :(得分:0)
我通过条件渲染解决了我的问题。此外,我还更改了以下课程并添加了
此行: next.audio == current.audio ||
export default class Message extends React.Component {
shouldComponentUpdate(nextProps) {
const next = nextProps.currentMessage;
const current = this.props.currentMessage;
const { nextMessage } = this.props;
const nextPropsMessage = nextProps.nextMessage;
return (
next.send !== current.send ||
next.received !== current.received ||
next.pending !== current.pending ||
next.createdAt !== current.createdAt ||
next.text !== current.text ||
next.image !== current.image ||
next.video !== current.video ||
next.audio == current.audio || // this line added by me
nextMessage !== nextPropsMessage
);
}
//..............
}
我添加了此条件,请让我知道性能。这行代码,我添加到了代码中:
this.myPro = <Progress.Circle progress={this.state.progress} showsText size={35} />; this.setState({currentPlayedMessage: props.currentMessage._id }); { props.currentMessage._id === this.state.currentPlayedMessage ? this.myPro : null }
所有代码:
if (props.currentMessage.audio) {
this.myPro = <Progress.Circle progress={this.state.progress} showsText size={35} />; // this line added
return (
<View style={[{ width: 150, height: 70, backgroundColor: 'lightgray' }, props.position === 'left' ? { left: -41 } : {}]}>
<EIcon
name="google-play"
size={30}
color={this.state.playAudio ? "green" : "blue"}
style={{
left: 90,
position: "relative",
shadowColor: "#000",
shadowOffset: { width: 0, height: 0 },
shadowOpacity: 0.5,
backgroundColor: "transparent"
}}
onPress={() => {
this.setState({
playAudio: true,
currentPlayedMessage: props.currentMessage._id // this line added
});
const sound = new Sound(props.currentMessage.audio, "", error => {
if (error) {
return;
}
const duration = sound.getDuration();
const progressPhase = 1 / duration;
if (duration !== 0) {
this._interval = setInterval(() => {
this.setState({
progress: this.state.progress += progressPhase
});
if (this.state.progress >= 1) {
clearInterval(this._interval);
this.setState({
progress: 0.0,
playAudio: false
});
}
}, 1000);
}
sound.play(success => {
console.log(success, "success play");
if (!success) {
Alert.alert("There was an error playing this audio");
}
});
});
}}
/>
{ props.currentMessage._id === this.state.currentPlayedMessage ? this.myPro : null } // this line added
</View>
);
}
答案 1 :(得分:0)
请分享我所面临问题的完整示例