【报Bug】3.8.3 live-pusher切到后台在切回应用必定黑屏或花屏且在ios预览模式下 组件无法设置高度

示例代码：

<template> <view> <live-pusher @click="pusherClick" id='livePusher' ref="livePusher" :style="'height:'+winHeight+'px;'" style="width: 750rpx;" url="url" :mode="mode" :muted="muted" :enable-camera="enableCamera" :auto-focus="autofocus" beauty="beauty" :whiteness="whiteness" :aspect="aspect" :orientation="orientation" min-bitrate="minBitrate" :max-bitrate="maxBitrate" :audio-quality="audioQuality" waiting-image="waitingImage" :waiting-image-hash="waitingImageHash" :zoom="zoom" device-position="devicePosition" :background-mute="backgroundMute" :remote-mirror="remoteMirror" local-mirror="localMirror" :audio-reverb-type="audioReverbType" :enable-mic="enableMic" enable-agc="enableAgc" :enable-ans="enableAns" :audio-volume-type="audioVolumeType" @statechange="statechange" @netstatus="netstatus" @error="error">
</live-pusher>
<view class=""
style="position: fixed;right: 0;width: 750rpx;right: 0;align-items: center;justify-content: center;"

style="'top:'+barH+'px;'"> <view class=""
style="height: 250rpx;width: 720rpx;background-color: rgba(0, 0, 0, .389);border-radius: 50rpx;padding: 25rpx;flex-direction: row;align-items: center;justify-content: center;">
<view class="" style="position: relative;width: 150rpx;height: 150rpx;border-radius: 10rpx;">
<image
style="position: absolute;left: 0;right: 0;bottom: 0;right: 0;width: 150rpx;height: 150rpx;border-radius: 10rpx;"
src="../../static/logo.png" mode=""></image>
<view class=""
style="width: 150rpx;height: 40rpx;background-color: rgba(0, 0, 0, .389);bottom: 0;right: 0;left: 0;position: absolute;justify-content: center;align-items: center;">
<text style="font-size: 13px;color: #fff;text-align: center;">{{push_cover}}</text>
</view>
</view>
<view class="" style="flex: 1;margin-left: 25rpx;width: 515rpx;">
<view class="" style="flex-direction: row;" @click="popOpen">
<text style="color: #fff;font-size: 13px;">{{push_roomType}}：</text>
<text style="color: #9d65e1;font-size: 13px;">{{radiovalue7}}</text>
</view>
<view class="" style="flex-direction: row;align-items: center;margin-top: 20rpx;"
v-if="roomType == 2">
<text style="color: #fff;font-size: 13px;">{{push_roomPass}}：</text>
<view class="u-demo-block__content">
<u-code-input v-model="value3" :space="0" :maxlength="4" :size="25" color="#9d65e1" hairline borderColor="#9d65e1"></u-code-input>
</view>
</view>
<view class="" style="flex-direction: row;align-items: center;margin-top: 20rpx;"
v-if="roomType == 1">
<text style="color: #fff;font-size: 13px;">{{push_roomMoney}}：</text>
<u-number-box color="#fff" iconStyle="color: #fff" min="1" max="100" step="0.01" bgColor="#9d65e1" :buttonSize="25" v-model="value" @change="valChange"></u-number-box>
</view>
</view>
</view>
</view>
<view class="" style="width: 750rpx;position: fixed;flex-direction: row;" :style="'top:'+(barH+getPx(250))+'px;height:'+(winHeight - barH - getPx(250) - 100)+'px;'">
<view class="" style="width: 550rpx;">

    </view>  
    <view class="" style="width: 200rpx;">  
        <view class="" style="width: 200rpx;height: 75px;align-items: center;justify-content: center;">  
            <u-icon name="../../static/push/camera.png" :label="push_reversal" labelPos="bottom" labelColor="#fff" size="28"></u-icon>  
        </view>  
        <view class="" style="width: 200rpx;height: 75px;align-items: center;justify-content: center;">  
            <u-icon name="../../static/push/clarity.png" :label="push_quality" labelPos="bottom" labelColor="#fff" size="28"></u-icon>  
        </view>  
        <view class="" style="width: 200rpx;height: 75px;align-items: center;justify-content: center;">  
            <u-icon name="../../static/push/beauty.png" :label="push_beauty" labelPos="bottom" labelColor="#fff" size="28"></u-icon>  
        </view>  
        <view class="" style="width: 200rpx;height: 75px;align-items: center;justify-content: center;">  
            <u-icon name="../../static/push/whitening.png" :label="push_whitening" labelPos="bottom" labelColor="#fff" size="28"></u-icon>  
        </view>  
        <view class="" style="width: 200rpx;height: 75px;align-items: center;justify-content: center;">  
            <u-icon @click="backPage" name="close-circle-fill" color="#fff" label="退出直播" labelPos="bottom" labelColor="#fff" size="28"></u-icon>  
        </view>  
    </view>  
</view>  
<view class="" style="width: 750rpx;position: fixed;bottom: 0;height: 100px;align-items: center;justify-content: center;flex-direction: row;">  
    <view class="" style="width: 500rpx;">  
        <u-button @click="start" text="开始直播" color="linear-gradient(to right, rgb(66, 83, 216), rgb(213, 51, 186))" shape="circle" iconColor="#fff" icon="camera-fill"></u-button>  
    </view>  
</view>  
<u-popup :show="show" @close="close1" bgColor="transparent" round='15'>  
    <view :style="'height: '+(winHeight/2)+'px;'" :class="['bgPage'+theme]" style="border-radius: 15px;">  
        <view class="" style="margin-top: 35rpx;align-items: center;justify-content: center;">  
            <text :style="theme == '_light' ?'color:#000;':'color:#fff;'" style="font-size: 14px;">类型选择</text>  
        </view>  
        <view class="" style="margin: 20rpx;">  
            <view>  
                <view class="u-page__radio-item">  
                    <u-radio-group @change="roomTypeChange" v-model="radiovalue7" :borderBottom="true"  
                        placement="column" iconPlacement="right">  
                        <u-radio :labelColor="theme == '_light' ? '#000':'#fff'"  

customStyle="{marginBottom: '16px'}" v-for="(item, index) in radiolist7" key="index" :label="item.name" :name="item.name"> </u-radio>
</u-radio-group>
</view>
</view>
</view>
</view>
</u-popup>
</view>
</template>

<script>
import $t from '@/i18n/index.js';
import {
mapGetters
} from 'vuex';
export default {
data() {
return {
url: "rtmp://192.168.31.96/live/livestream?token=1234566&sign=123", //推流地址
mode: "", //推流视频模式，可取值：SD（标清）, HD（高清）, FHD（超清）。
aspect: "9:16", //宽高比
muted: false, //是否静音
enableCamera: true, //是否开启摄像头
autofocus: true, //自动聚焦
beauty: 0, //美颜，取值范围 0-9（iOS取值范围为1即0-0.9-1） ，0 表示关闭。
whiteness: 0, //美白，取值范围 0-9（iOS取值范围为1） ，0 表示关闭。同上
orientation: "vertical", //vertical竖屏horizontal横屏
minBitrate: 200, //最小码率
maxBitrate: 1000, //最大码率
audioQuality: "high", //高音质(48KHz)或低音质(16KHz)，值为high, low
waitingImage: "../../static/push/leave.png", //进入后台时推流的等待画面
waitingImageHash: "3c846863a47d2656cc5ad7326f6aee03", //等待画面资源的MD5值
zoom: false, //调整焦距
devicePosition: "front", //前置或后置，值为front, back
backgroundMute: false, //进入后台时是否静音
remoteMirror: false, //推流是否镜像
localMirror: "disable", //auto前置摄像头镜像，后置摄像头不镜像,enable前后置摄像头均镜像,disable前后置摄像头均不镜像
audioReverbType: 0, //0关闭1KTV2小房间3大会堂4低沉5洪亮6金属声7磁性
enableMic: false, //开启或关闭麦克风
enableAgc: false, //是否开启音频自动增益
enableAns: false, //是否开启音频噪声抑制
audioVolumeType: "media", //media 媒体音量 voicecall 通话音量
winHeight: 0, //系统高度
context: null, //推流上下文
barH: 0, //状态栏高度
show: false,
//横向两端排列形式数据
radiolist7: [],
// u-radio-group的v-model绑定的值如果设置为某个radio的name，就会被默认选中
radiovalue7: '',
roomType: 0, //房间类型
isBack:false
}
},
onReady() {
plus.navigator.setFullscreen(false);
plus.navigator.setStatusBarStyle("light");
this.winHeight = uni.$u.sys()['windowHeight']; //获取系统高度
this.barH = uni.$u.sys()['statusBarHeight']; //状态栏高度
// 注意：需要在onReady中 或 onLoad 延时
this.context = uni.createLivePusherContext("livePusher", this);
this.startPreview(); //开启摄像头预览
},
onBackPress(e) {
console.log(e);
if(!this.isBack){
return true;
}
},
onLoad() {

        this.radiovalue7 = this.push_commonRoom  
        //必须要调用这个才能禁止ios的左侧滑动返回  
        plus.webview.currentWebview().setStyle({  
          'popGesture': 'none'  
        });  
    },  
    onShow() {  
        if(!uni.$u.test.isEmpty(this.context)){  
            this.startPreview(); //开启摄像头预览  
            setTimeout(()=>{  
                this.resume()  
            },1000)  
        }  
        this.radiolist7 = [{  
                id: 0,  
                name: this.push_commonRoom,  
                disabled: false  
            },  
            {  
                id: 2,  
                name: this.push_passwordRoom,  
                disabled: false  
            },  
            {  
                id: 1,  
                name: this.push_timeRoom,  
                disabled: false  
            },  
        ]  
    },  
    methods: {  
        backPage(){  
            this.isBack = true  
            uni.navigateBack()  
        },  
        getPx(value) {  
            let val = parseInt(uni.upx2px(Number(value)))  
            return val % 2 === 0 ? val : val + 1  
        },  
        pusherClick(){  
            uni.hideKeyboard();  
        },  
        popOpen() {  
            uni.hideKeyboard();  
            this.show = true;  
        },  
        roomTypeChange(e) {  
            console.log(e);  
            this.radiolist7.forEach((v, i) => {  
                console.log(v);  
                if (e == v.name) {  
                    this.roomType = v.id  
                    console.log(this.roomType);  
                }  
            })  
            this.close1()  
        },  
        close1() {  
            this.show = false  
        },  
        statechange(e) {  
            console.log(e);  
        },  
        netstatus(e) {  
            console.log("netstatus:" + JSON.stringify(e));  
        },  
        error(e) {  
            console.log("error:" + JSON.stringify(e));  
        },  
        start: function() {  
            this.context.start({  
                success: (a) => {  
                    console.log("livePusher.start:" + JSON.stringify(a));  
                }  
            });  
        },  
        close() {  
            this.context.close({  
                success: (a) => {  
                    console.log("livePusher.close:" + JSON.stringify(a));  
                }  
            });  
        },  
        snapshot() {  
            this.context.snapshot({  
                success: (e) => {  
                    console.log(JSON.stringify(e));  
                }  
            });  
        },  
        resume() {  
            this.context.resume({  
                success: (a) => {  
                    console.log("livePusher.resume:" + JSON.stringify(a));  
                }  
            });  
        },  
        pause() {  
            this.context.pause({  
                success: (a) => {  
                    console.log("livePusher.pause:" + JSON.stringify(a));  
                }  
            });  
        },  
        stop() {  
            this.context.stop({  
                success: (a) => {  
                    console.log(JSON.stringify(a));  
                }  
            });  
        },  
        switchCamera() {  
            this.context.switchCamera({  
                success: (a) => {  
                    console.log("livePusher.switchCamera:" + JSON.stringify(a));  
                }  
            });  
        },  
        startPreview(){  
            this.context.startPreview({  
                success: (a) => {  
                    console.log("livePusher.startPreview:" + JSON.stringify(a));  
                },  
                fail: (e) => {  
                    uni.$u.toast('摄像头开启失败，请检查是否基于app摄像头权限')  
                }  
            });  
        },  
        stopPreview() {  
            this.context.stopPreview({  
                success: (a) => {  
                    console.log("livePusher.stopPreview:" + JSON.stringify(a));  
                }  
            });  
        }  
    },  
    computed: {  
        ...mapGetters(['theme', 'language', 'conf']),  
        push_commonRoom() {  
            return $t('push_commonRoom', this.language);  
        },  
        push_passwordRoom() {  
            return $t('push_passwordRoom', this.language);  
        },  
        push_timeRoom() {  
            return $t('push_timeRoom', this.language);  
        },  
        push_roomType() {  
            return $t('push_roomType', this.language);  
        },  
        push_roomPass() {  
            return $t('push_roomPass', this.language);  
        },  
        push_roomMoney() {  
            return $t('push_roomMoney', this.language);  
        },  
        push_reversal() {  
            return $t('push_reversal', this.language);  
        },  
        push_quality() {  
            return $t('push_quality', this.language);  
        },  
        push_beauty() {  
            return $t('push_beauty', this.language);  
        },  
        push_whitening() {  
            return $t('push_whitening', this.language);  
        },  
        push_cover() {  
            return $t('push_cover', this.language);  
        }  
    }  
}  

</script>

<style>

</style>

操作步骤：

开启推流-切换后台-等待三秒-切回应用-onShow开启摄像头预览-开始黑屏或花屏此时有音频输出，在安卓下高度可设置，在ios下高度只有一半

预期结果：

可正常推流，ios预览高度正常

实际结果：

无法正常推流，ios高度不正常