我正在使用 Cordova 开发一个 Android 应用程序项目。其中我有一个简单的Sqlite数据库。
--------------------
ID | Name | Number |
--------------------
由于我是 Android 应用程序的新手，所以我刚刚准备好 UI。我有两个 text inputs , 一个 <div>标签显示表格数据和 3 buttons .当用户点击每一列时，会弹出一个用于删除或编辑行内容的弹出窗口。
这里是 HTML用户界面代码:
<body>
<h1>My first App</h1>
<p>Open Database</p>
<div id="qrpopup" > //The hidden div tag for implementing the popup
<hr/>
<input type="text" id="editNameBox"><br>
<input type="text" id="editNumberBox"><br>
<button onclick="goDelete()">Delete</button>
<button onclick="goEdit()">Edit</button>
<button onclick="document.getElementById('qrpopup').style.display='none';">Discard</button>
</div>
<div>
Name<input type="text" value="Name" id="txtName">
Number<input type="text" value="123" id="txtNumber"><hr/>
</div>
<div id="tblDiv"></div>
<div style="text-align: center">
<button onclick="goInsert()">Insert</button>
<button onclick="goSearch()">Search</button>
<button onclick="successCB()">Show All</button>
</div>
</body>
我还使用了一些 Css使我的应用看起来更好的样式。这是我的style.css文件:
input[type='text'] {
border: 1px solid black;
width: 200px;
margin-left: 10px;
}
table {
width:100%;
}
table, th, td {
border: 1px solid black;
border-collapse: collapse;
}
th, td {
padding: 5px;
text-align: left;
}
table#t01 tr:nth-child(even) {
background-color: #eee;
}
table#t01 tr:nth-child(odd) {
background-color:#fff;
}
table#t01 th {
background-color: black;
color: white;
}
button {
margin: 10px;
font: bold 13px "Helvetica Neue", Helvetica, Arial, clean, sans-serif !important;
text-shadow: 0 -1px 1px rgba(0,0,0,0.25), -2px 0 1px rgba(0,0,0,0.25);
border-radius: 5px;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
-moz-box-shadow: 0 1px 2px rgba(0,0,0,0.5);
-webkit-box-shadow: 0 1px 2px rgba(0,0,0,0.5);
display: inline-block;
color: white;
padding: 5px 10px 5px;
white-space: nowrap;
text-decoration: none;
cursor: pointer;
background-color: #BE3E76;
border-style: none;
text-align: center;
overflow: visible;
}
button:active {
background-position: 0 -100px;
-moz-box-shadow: inset 0 1px 2px rgba(0,0,0,0.7);
-webkit-box-shadow: none;
}
#qrpopup {
position:fixed;z-index:9999;background-color:rgba(0, 0, 0,0.9);width:100%; height:100%;display:none;
}
但我想知道如何使用 javascript 创建插入、编辑、删除和搜索功能在 Cordova ?
最佳答案
所以经过3天的尝试，我终于完成了，我说最好分享给有兴趣使用Sqlite的人。 Cordova 中的数据库和 PhoneGap .所以这里是答案:
这些 scripts继续<head>标签:
<!-- cordova script (this will be a 404 during development) -->
<script src="cordova.js"></script>
<script type="text/javascript" charset="utf-8">
// Wait for Cordova to load
//
document.addEventListener("deviceready", onDeviceReady, false);
var currentRow;
// Populate the database
//
function populateDB(tx) {
tx.executeSql('CREATE TABLE IF NOT EXISTS DEMO (id INTEGER PRIMARY KEY AUTOINCREMENT, name,number)');
}
// Query the database
//
function queryDB(tx) {
tx.executeSql('SELECT * FROM DEMO', [], querySuccess, errorCB);
}
function searchQueryDB(tx) {
tx.executeSql("SELECT * FROM DEMO where name like ('%"+ document.getElementById("txtName").value + "%')",
[], querySuccess, errorCB);
}
// Query the success callback
//
function querySuccess(tx, results) {
var tblText='<table id="t01"><tr><th>ID</th> <th>Name</th> <th>Number</th></tr>';
var len = results.rows.length;
for (var i = 0; i < len; i++) {
var tmpArgs=results.rows.item(i).id + ",'" + results.rows.item(i).name
+ "','" + results.rows.item(i).number+"'";
tblText +='<tr onclick="goPopup('+ tmpArgs + ');"><td>' + results.rows.item(i).id +'</td><td>'
+ results.rows.item(i).name +'</td><td>' + results.rows.item(i).number +'</td></tr>';
}
tblText +="</table>";
document.getElementById("tblDiv").innerHTML =tblText;
}
//Delete query
function deleteRow(tx) {
tx.executeSql('DELETE FROM DEMO WHERE id = ' + currentRow, [], queryDB, errorCB);
}
// Transaction error callback
//
function errorCB(err) {
alert("Error processing SQL: "+err.code);
}
// Transaction success callback
//
function successCB() {
var db = window.openDatabase("Database", "1.0", "Cordova Demo", 200000);
db.transaction(queryDB, errorCB);
}
// Cordova is ready
//
function onDeviceReady() {
var db = window.openDatabase("Database", "1.0", "Cordova Demo", 200000);
db.transaction(populateDB, errorCB, successCB);
}
//Insert query
//
function insertDB(tx) {
tx.executeSql('INSERT INTO DEMO (name,number) VALUES ("' +document.getElementById("txtName").value
+'","'+document.getElementById("txtNumber").value+'")');
}
function goInsert() {
var db = window.openDatabase("Database", "1.0", "Cordova Demo", 200000);
db.transaction(insertDB, errorCB, successCB);
}
function goSearch() {
var db = window.openDatabase("Database", "1.0", "Cordova Demo", 200000);
db.transaction(searchQueryDB, errorCB);
}
function goDelete() {
var db = window.openDatabase("Database", "1.0", "Cordova Demo", 200000);
db.transaction(deleteRow, errorCB);
document.getElementById('qrpopup').style.display='none';
}
//Show the popup after tapping a row in table
//
function goPopup(row,rowname,rownum) {
currentRow=row;
document.getElementById("qrpopup").style.display="block";
document.getElementById("editNameBox").value = rowname;
document.getElementById("editNumberBox").value = rownum;
}
function editRow(tx) {
tx.executeSql('UPDATE DEMO SET name ="'+document.getElementById("editNameBox").value+
'", number= "'+document.getElementById("editNumberBox").value+ '" WHERE id = '
+ currentRow, [], queryDB, errorCB);
}
function goEdit() {
var db = window.openDatabase("Database", "1.0", "Cordova Demo", 200000);
db.transaction(editRow, errorCB);
document.getElementById('qrpopup').style.display='none';
}
</script>
就是这样!现在您可以在 Sqlite 中添加、编辑、删除和搜索您的数据。数据库使用 Cordova .
希望对有兴趣的 friend 有所帮助。
关于javascript - 一个简单的 Cordova android 示例，包括 Sqlite 读/写和搜索，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26604952/