DropdownButton Widget

<p>reset-3c756112--pageHeader-2d9fadfeoutline: none; box-sizing: inherit; margin: 0px 0px 32px; padding: 0px; border-bottom: 1px solid rgb(230, 236, 241);](reset-3c756112--pageHeaderInner-7c0f0284outline: none; box-sizing: inherit; flex: 1 1 auto; margin: 0px; display: flex; padding: 40px 0px; flex-flow: row wrap; align-items: baseline; -webkit-box-align: baseline; -webkit-box-orient: horizontal; -webkit-box-direction: normal;](reset-3c756112--pageHeaderWrapperContent-6897c946outline: none; box-sizing: inherit; flex: 1 1 0%; margin: 0px; padding: 0px; position: relative;](reset-3c756112--pageHeaderDescription-22970244outline: none; box-sizing: inherit; flex: 1 1 auto; margin: 0px; padding: 0px;](pageDescription-fa3710acoutline: none; box-sizing: inherit; width: 750px; color: rgb(59, 69, 78); margin: 24px 0px 0px; border: none; resize: none; min-height: 19px; overflow-x: hidden; background: none; border-radius: 3px; letter-spacing: 0em;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](In this tutorial, you will learn how to use the DropdownButton in the flutter.</p> <p>reset-3c756112--toaster-c029690eoutline: none; box-sizing: inherit; top: 16px; left: 951.5px; margin: 0px; padding: 0px; z-index: 160; position: fixed; transform: translateX(-50%);](reset-3c756112--pageBody-ceb8ae94outline: none; box-sizing: inherit; margin: 0px; display: flex; padding: 0px; flex-direction: column; -webkit-box-orient: vertical; -webkit-box-direction: normal;](blockParagraph-544a408cdata-key="a8ba0ed25d4046798f1316600574e159outline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="f6d809647a554aedb17c86d8d7432f49outline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="ced035b6ad6a49a99ad934b5274d0033outline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="a68d286b5eb84b12bb4e30592bbb2ae1outline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="eacdf8e4a1ad459e940413ca5120a768outline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="98be8d0093b44f51b2e1243d0d11c9a2outline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="56f08330ec46467d8d42e6a27ada43d1outline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](>blockParagraph-544a408cdata-key="5cf205b7208741b1a24f72f24490656foutline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="1557bce0ce414d3481498b0c9e2f74d7outline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="dfd484d131574e498f1ae0eaa892836aoutline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="4c580401da6c489da1373887340994b5outline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="e6f7eecd8ae0470581d122ca33069930outline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="2784e56a1e5c4f6785a3635397638b18outline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="cdc12865bcf4469e9e94eac80b7406ccoutline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="5cfc40e28c2e4b639ff7e7452d59c367outline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="9102c80fde7844f6bb7d8474a70bb6ccoutline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="f9e438cd47c743cca5721a856801d753outline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](blockParagraph-544a408cdata-key="ce860c3fd21e462c84e71a818350d852outline: none; box-sizing: inherit; color: rgb(59, 69, 78); margin-right: 0px; margin-bottom: 24px; margin-left: 0px; position: relative; font-family: Roboto, sans-serif;](text-4505230f--TextH400-3033861foutline: none; box-sizing: inherit; line-height: 1.625;](reset-3c756112--tableWrapper-4a5ed20coutline: none; box-sizing: inherit; margin: 24px 0px 32px; padding: 0px; overflow: visible; position: relative; color: rgb(59, 69, 78); font-family: Roboto, sans-serif;](</p>