Question

嗨，我是手机上的新手..我现在尝试使用带数据库的phonegap，我能够在模拟器/获取记录中显示记录..但是当我尝试在build.phonegap.com中构建应用程序时。 apk当我安装应用程序并运行在我的Android没有记录显示..我的问题是我如何构建我的应用程序，包括数据库？我有.db已经在哪里放置它或我需要添加一些脚本？希望你明白我的意思，对不起我的英语..

这是代码：

<!DOCTYPE html>
<html>
  <head>
    <title>Storage Example</title>

    <script type="text/javascript" charset="utf-8" src="cordova-2.4.0.js"></script>
    <script type="text/javascript" src="cordova.js"></script>
    <script type="text/javascript" charset="utf-8">


    // Wait for Cordova to load
    //
    document.addEventListener("deviceready", onDeviceReady, false);

    // Cordova is ready
    //
    function onDeviceReady() {
        var db = window.openDatabase("Database", "1.0", "Cordova Demo", 200000);
    }


    function clickFunc(){
        var db = window.openDatabase("Database", "1.0", "Cordova Demo", 200000);
        db.transaction(selectData);
    }


    function selectData(tx){
        tx.executeSql("SELECT * FROM test",[],resultSuccess,resultError);
    }

    function resultError(error){
        alert("Error: "+error);
    }

    function resultSuccess(tx, response){
        var div = document.getElementById('display');
        var tmp = "<table><tr><th>ID</th><th>DATA</th></tr>";
        for(var i = 0;i<response.rows.length;i++){
            tmp += "<tr><td>" + response.rows.item(i).id + "</td><td>" + response.rows.item(i).data + "</td></tr>";
            div.innerHTML = tmp;
        }
    }


    </script>
  </head>
  <body>

<input type="button" value="FITCH" id="btnSelect" onclick="clickFunc();"/>
<div id="display">

</div>

Answer 1

您的仅创建数据库，但您不创建任何表，也无需插入任何表。这样你的apk就不会产生你的例外结果。

所以你会试试这段代码

<!DOCTYPE html>
<html>
  <head>
    <title>Storage Example</title>

    <script type="text/javascript" charset="utf-8" src="cordova-2.4.0.js"></script>
    <script type="text/javascript" src="cordova.js"></script>
    <script type="text/javascript" charset="utf-8">


    // Wait for Cordova to load
    //
    document.addEventListener("deviceready", onDeviceReady, false);

    // Cordova is ready
    //
    function onDeviceReady() {
        var db = window.openDatabase("Database", "1.0", "Cordova Demo", 200000);
    }

    function populateDB(tx) {
         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")');
    }


    function clickFunc(){
        var db = window.openDatabase("Database", "1.0", "Cordova Demo", 200000);
        db.transaction(selectData);
    }


    function selectData(tx){
        tx.executeSql("SELECT * FROM test",[],resultSuccess,resultError);
    }

    function resultError(error){
        alert("Error: "+error);
    }

    function resultSuccess(tx, response){
        var div = document.getElementById('display');
        var tmp = "<table><tr><th>ID</th><th>DATA</th></tr>";
        for(var i = 0;i<response.rows.length;i++){
            tmp += "<tr><td>" + response.rows.item(i).id + "</td><td>" + response.rows.item(i).data + "</td></tr>";
            div.innerHTML = tmp;
        }
    }


    </script>
  </head>
  <body>

<input type="button" value="FITCH" id="btnSelect" onclick="clickFunc();"/>
<div id="display">

</div>

如果您需要更多详细信息，请参阅以下链接：http://docs.phonegap.com/en/2.7.0/cordova_storage_storage.md.html#Storage

PHONEGAP如何构建我的应用程序，包括数据库

1 个答案: