这是我的Javascript代码
document.addEventListener("deviceready", onDeviceReady, false);
// Populate the database
//
function populateDB(tx) {
alert("populateDB");
tx.executeSql('DROP TABLE IF EXISTS DEMO');
tx.executeSql('CREATE TABLE IF NOT EXISTS DEMO (id unique, data)');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (1, "First row")');
tx.executeSql('INSERT INTO DEMO (id, data) VALUES (2, "Second row")');
}
// Query the database
//
function queryDB(tx) {
alert("queryDB");
tx.executeSql('SELECT * FROM DEMO', [], querySuccess, errorCB);
}
// Query the success callback
//
function querySuccess(tx, results) {
alert("querySuccess");
// this will be empty since no rows were inserted.
console.log("Insert ID = " + results.insertId);
// this will be 0 since it is a select statement
console.log("Rows Affected = " + results.rowAffected);
// the number of rows returned by the select statement
console.log("Insert ID = " + results.rows.length);
}
// Transaction error callback
//
function errorCB(err) {
alert("errorCB");
console.log("Error processing SQL: "+err.code);
}
// Transaction success callback
//
function successCB() {
alert("successCB");
var db = window.openDatabase("Database", "1.0", "PhoneGap Demo", 200000);
db.transaction(queryDB, errorCB);
}
// PhoneGap is ready
//
function onDeviceReady() {
alert("onDeviceReady");
var db = window.openDatabase("Database", "1.0", "PhoneGap Demo", 200000);
db.transaction(populateDB, errorCB, successCB);
}
但我收到此错误日志
D/DroidGap(1674): DroidGap.loadUrl(file:///android_asset/www/index.html)
D/DroidGap(1674): DroidGap: url=file:///android_asset/www/index.html baseUrl=file:///android_asset/www/
D/DroidGap(1674): DroidGap.init()
D/SoftKeyboardDetect(1674): Ignore this event
D/SoftKeyboardDetect(1674): Ignore this event
D/dalvikvm(1674): GC_FOR_MALLOC freed 1758 objects / 121720 bytes in 172ms
I/Database(1674): sqlite returned: error code = 14, msg = cannot open file at source line 25467
D/PhoneGapLog(1674): DroidGap: onExceededDatabaseQuota estimatedSize: 200000 currentQuota: 0 totalUsedQuota: 0
D/PhoneGapLog(1674): calling quotaUpdater.updateQuota newQuota: 200000
D/PhoneGapLog(1674): INVALID_ACCESS_ERR: DOM Exception 15: A parameter or an operation was not supported by the underlying object.
D/PhoneGapLog(1674): file:///android_asset/www/index.html: Line 232 : INVALID_ACCESS_ERR: DOM Exception 15: A parameter or an operation was not supported by the underlying object.
E/Web Console(1674): INVALID_ACCESS_ERR: DOM Exception 15: A parameter or an operation was not supported by the underlying object. at file:///android_asset/www/index.html:232
D/PhoneGapLog(1674): Error processing SQL: 0
D/PhoneGapLog(1674): file:///android_asset/www/index.html: Line 243 : Error processing SQL: 0
我正在使用Phonegap 1.4.0版。 问题是什么?
答案 0 :(得分:2)
不知道你是否已经解决了这个问题,但是我使用了相同的示例代码,同样的问题。这个例子不正确。 Phonegap现在有一个更新的例子。用
替换您的查询方法function querySuccess(tx, results) {
var len = results.rows.length;
console.log("DEMO table: " + len + " rows found.");
for (var i=0; i<len; i++){
console.log("Row = " + i + " ID = " + results.rows.item(i).id + " Data = " + results.rows.item(i).data);
}
}
答案 1 :(得分:1)
根据Web SQL spec:
insertId属性必须返回该行的行ID SQLResultSet对象的SQL语句插入到数据库中,如果是 声明插入一行。如果语句插入多行,则 最后一行的ID必须是返回的ID。 如果声明没有 插入一行,然后该属性必须提出一个 INVALID_ACCESS_ERR例外。
您的queryDB
方法执行SELECT。因此,根据定义,它不能插入任何行。因此,insertId
在此上下文中无效。
答案 2 :(得分:0)
try {
console.log("Insert ID = " + results.insertId);
} catch(exc) {
// console.log(exc)
console.log("Insert ID = " + null);
}