Question

我有一个textfield deviceid我试图将该值存储到sqlite数据库，然后尝试以其他形式检索它但我得到了下面的错误。这是正常工作，当我在桌面上运行它但我得到了我尝试在phonegap app中运行时出错。

错误处理SQL：语句回调引发异常或语句errorcallback未返回false New.html：

    <script type="text/javascript">                                                                                                                                                                                                                                                                                      document.addEventListener("deviceready", onDeviceReady, false);
            var db,did;
            function onDeviceReady() {
                db = window.openDatabase("Watersenz", "1.0", "Cordova Demo", 2*1024*1024);
                db.transaction(createDB, errorCB, successCB);
            }
            function createDB(tx) {
                alert("createDB");
                tx.executeSql('DROP TABLE IF EXISTS USERIDDETAILS');
                tx.executeSql('CREATE TABLE IF NOT EXISTS USERIDDETAILS (deviceid TEXT NOT NULL)');
            }
            function errorCB(err) {
                alert("Error processing SQL: "+err.code);
                console.log("Error processing SQL: "+err.message);
            }
            function successCB() {
                alert("success");
                console.log("success");
            }
            function insertDB(tx) {
                did = $("[name='deviceid']").val();
                var sql='INSERT INTO USERIDDETAILS(deviceid)VALUES(?)';
                tx.executeSql(sql,[did],sucessQueryDB,errorCB);
                console.log(did);
                alert(did);
            }   
            function sucessQueryDB(tx){
                alert("selected");
                tx.executeSql('SELECT * FROM USERIDDETAILS',[],renderList,errorCB); 
            }
            function renderList(tx,results){ 
            alert("rendering");
                var htmlstring='';
                var len=results.rows.length;
                alert("rendered called"+ len);
                for(var i=0;i<len;i++){
                    htmlstring += '<li>'+ results.rows.item(i).deviceid+'</li>';
                }   
                $('#resultList').html(htmlstring);
                $('#resultList').listview('refresh');
            }

            function onClick(){
                db.transaction(insertDB,errorCB);
                window.open("new1.html");
            return false;
        }</script>
</head>   
<body>
    <div id="header">
        <h3> Login </h3>
    </div>
    <div id="section">
        <form id="myForm">
             <br><input type="text" class="one" name="deviceid" id="deviceid" placeholder="DeviceId"><br>
             <input type="button" class="button" value="SUBMIT" onclick="return onClick()">
        </form>

    </div>

New1.html：

script type="text/javascript">
        var db;
        function loaddb()
        {
            db = window.openDatabase("Watersenz", "1.0", "Cordova Demo", 2*1024*1024);
            db.transaction(successCB,errorCB);
            console.log("loaded");
            alert("loaded");
        }
        function errorCB(err) {
            alert("Error processing SQL: "+err.code);
            alert("Error processing SQL: "+err.message);
            console.log("Error processing SQL: "+err.message);
        }
        function successCB() {
            console.log("success");
            alert("success");
        }

        function queryDB(tx){
            tx.executeSql('SELECT * FROM USERIDDETAILS',[],renderList1,errorCB);    
            console.log("selected");
            alert("selected");
        }
        function repopulateId(){
            db.transaction(queryDB,errorCB);
            console.log("populated");
            alert("populated");
        }
        function renderList1(tx,results){ 
            console.log("rendering");
            alert("rendering");
            var htmlstring='';  
            var len=results.rows.length;
            var did = results.rows.item(0).deviceid;
            $('#deviceid').val(did);
        }</head>

<body>
    <div id="header">
        <h3> User Profile </h3>
    </div>
    <div>
    <script type="text/javascript">
        $(document).ready(function() {
        loaddb();
        repopulateId();
        }); 
    </script>
    </div>
    <div id="section">
        <form method="post" id="myForm">
             Device Id:<br><input type="text" class="one" name="deviceid" id="deviceid">
             <ul data-role="listview" id="resultList">
            </ul>
        </form>
    </div>
</body>

任何人都可以帮我解决问题所在.Thankyou。

Answer 1

由于sqlite调用是异步的，执行不会等待查询返回数据。

 $(document).ready(function() {
        loaddb();
        //repopulateId();
        });

在 loaddb（）功能的成功回调中调用 repopulateId（）。

function successCB() {
            console.log("success");
            alert("success");
            repopulateId();
        }

希望这会有所帮助

Phonegap Sqlte：语句回调引发异常或语句errorcallback没有返回false

1 个答案: