live-pusher小程序端推流， this.context.start方法进不去

<script>
export default {
data() {
return {
context:[]
};
},
onReady() {
// 注意：需要在onReady中 或 onLoad 延时
this.context = uni.createLivePusherContext('livePusher', this);
},
methods: {
statechange(e) {
console.log('statechange:' + JSON.stringify(e));
},
netstatus(e) {
console.log('netstatus:' + JSON.stringify(e));
},
error(e) {
console.log('error:' + JSON.stringify(e));
},
start(){
console.log('start',this.context);
this.context.start({
success: a => {
console.log('livePusher.start:' + JSON.stringify(a));
},
fail:err=>{
console.log(err)
}
});
},
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() {
console.log('startPreview');
this.context.startPreview({
success: a => {
console.log('livePusher.startPreview:' + JSON.stringify(a));
},
fail:err=>{
console.log(err)
}
});
},
stopPreview() {
this.context.stopPreview({
success: a => {
console.log('livePusher.stopPreview:' + JSON.stringify(a));
}
});
},
bofang(){
this.$u.route({
url: 'pages/index/index'
})
}
}
};
</script>

<style>
.content {
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
}

.logo {
height: 200rpx;
width: 200rpx;
margin-top: 200rpx;
margin-left: auto;
margin-right: auto;
margin-bottom: 50rpx;
}

.text-area {
display: flex;
justify-content: center;
}

.title {
font-size: 36rpx;
color: #8f8f94;
}
</style>