(在初始化之前无法在 listView 上调用方法;尝试调用方法"刷新")？

Question

如何从cordova sqlite同步获取数据？我正在解决这个问题。我在脑海中提出了很多问题。为什么sqlite没有序列化模式。意思是：为什么不逐行执行。。？

我这样解决。。

var db = "";
//will create database Dummy_DB or open it
//function will be called when device ready
var caseNames=new Array();
function onDeviceReady() {

    db = window.openDatabase("Casepad", "1.0", "Casepad", 200000);
    if (window.localStorage.getItem("isAddSomeData") == "yes") {
        db.transaction(getallTableData, errorCB);
        /*db.transaction(function (tx) {
 tx.executeSql('SELECT * FROM a', [],
   // tx.executeSql('SELECT EXISTS(SELECT * FROM  b)', [],
              function(tx, results) {
               t=results.rows.length;
               alert(t)
});
    });*/
    }    
}
function insertData() {
    db.transaction(createTable, errorCB, afterSuccessTableCreation);
}
//create table and insert some record
function createTable(tx) {
    tx.executeSql('CREATE TABLE IF NOT EXISTS CaseTable (id INTEGER PRIMARY KEY AUTOINCREMENT, CaseName  VARCHAR(100) unique NOT NULL ,CaseDate INTEGER ,TextArea VARCHAR(200) NOT NULL)');
    tx.executeSql('INSERT OR IGNORE INTO CaseTable(CaseName,CaseDate,TextArea) VALUES ("' + $('.caseName_h').val() + '", "' + $('.caseDate_h').val() + '","' + $('.caseTextArea_h').val() + '")');

}
//function will be called when an error occurred
function errorCB(err) {
    navigator.notification.alert("Error processing SQL: " + err.code);
}
//function will be called when process succeed
function afterSuccessTableCreation() {
    console.log("success!");
    db.transaction(getallTableData, errorCB);
}

//select all from SoccerPlayer
function getallTableData(tx) {
    tx.executeSql('SELECT * FROM CaseTable', [], querySuccess, errorCB);
}

/*function querySuccess(){
for (var i = 0; i < len; i++) {
    alert(result.rows.item(0).CaseName)
        db.transaction(function (tx) {
 tx.executeSql('SELECT * FROM "'+result.rows.item(0).CaseName+'"', [],
   // tx.executeSql('SELECT EXISTS(SELECT * FROM  b)', [],
              function(tx, results) {
               t=results.rows.length;
               alert(t)
});
    });
}
}*/
function querySuccess(tx, result) {
    var len = result.rows.length;
    $('#folderData').empty();
    for (var i = 0; i < len; i++) {
    test=result.rows.item(i).CaseName;
    if(test=="a"){
    var t=Test(test);
     alert("yes" +t)
}

        $('#folderData').append(
                '<li class="caseRowClick" id="' + result.rows.item(i).id + '" data-rel="popup" data-position-to="window">' + '<a href="#">' + '<img src="img/Blue-Folder.png">' + '<h2>' + result.rows.item(i).CaseName + '</h2>' + '<p>' + result.rows.item(i).TextArea + '</p>' + '<p>' + result.rows.item(i).CaseDate + '</p>' + '</a>' + 
                 '<span class="ctrl togg"><fieldset data-role="controlgroup" data-type="horizontal" data-mini="true" ><button class="edit button_design">Edit</button><button class="del button_design">Delete</button></fieldset><span>'+'</li>'
                );
    }
    $('#folderData').listview('refresh');
}
function Test(test){
alert(test)
    db.transaction(function (tx) {
            $yoursql = 'SELECT * FROM  "'+test+'"';
            tx.executeSql($yoursql, [], function (tx, results) {
                return results.rows.length+"TableName"+test;
            });
});
}

运行后，我将首先得到是未定义，然后是表名。在控制台中，我得到这个错误

未捕获错误：无法在初始化之前调用listview上的方法；尝试调用方法"刷新"

Answer 1

更改此项：

$('#folderData').listview('refresh');

到此：

$('#folderData').listview().listview('refresh');

在某些情况下，列表视图必须用listview()初始化，然后才能用listview('refresh')刷新。

Answer 2

$('#ID').trigger('create');

然后

$('#ID').append(APPEND_CONTENT).listview('refresh');