uniapp 固定到屏幕底部的按钮

重要代码：padding-bottom: constant(safe-area-inset-bottom);padding-bottom: env(safe-area-inset-bottom);

		<view class="tabbar_bottom">
			<view class="footer">
				<view class="btn">
					<text v-if="!subloading">提现</text>
					<u-loading mode="circle" v-if="subloading"></u-loading>
				</view>
			</view>
		</view>

	.tabbar_bottom {
		position: fixed;
		left: 0;
		bottom: 0;
		width: 694rpx;
		height: 108rpx;
		background: #FFFFFF;
		padding-left: 30rpx;
		padding-right: 30rpx;
		padding-bottom: 16rpx;
		padding-bottom: constant(safe-area-inset-bottom);
		padding-bottom: env(safe-area-inset-bottom);
		box-sizing: content-box;
		border-top: 1rpx solid #efefef;
		z-index: 101;

		.footer {
			padding: 16rpx 30rpx;

			.btn {
				width: 100%;
				height: 80rpx;
				border-radius: 40rpx;
				line-height: 80rpx;
				text-align: center;
				font-size: 30rpx;
				color: #fff;
				background: blue;
			}
		}
	}