PhoneGap 嵌套的executeSql 在iPad 模拟器中不起作用

发布于 2025-01-03 08:31:50 字数 605 浏览 0 评论 0原文

不知何故，我的应用程序在 Win-Safari 中完美运行，但在由 PhoneGap 包装时却无法正常运行。这是片段：

// working db connection
db.transaction(function(tx) {
  tx.executeSql('SELECT * FROM tbl', [], function(tx, rs){
    // do something with the result

    tx.executeSql('SELECT * FROM another_tbl', [], function(txTwo, rsTwo){
      // do something with the result

      // further nesting ...

    }, errorHandler, successHandler);

  }, errorHandler, successHandler);
}

第一个结果集是正确的，我可以 console.log() 数据。但之后，我无法访问第二个嵌套查询的数据。

我没有收到任何错误，也没有调用我的处理程序（例如 errorHandler）。有趣的是，它在 Safari (Win 7) 上不会造成任何问题

原文

Somehow my application works perfectly in Win-Safari, but somehow not when wrapped by PhoneGap. This is the snippet:

// working db connection
db.transaction(function(tx) {
  tx.executeSql('SELECT * FROM tbl', [], function(tx, rs){
    // do something with the result

    tx.executeSql('SELECT * FROM another_tbl', [], function(txTwo, rsTwo){
      // do something with the result

      // further nesting ...

    }, errorHandler, successHandler);

  }, errorHandler, successHandler);
}

The first resultSet is correct and I can console.log() the data. But after that, I am not able to access the data of the second nested query.

I don't get any errors and non of my handlers are called (e.g. errorHandler). The funny thing is, that it does not cause any problems on Safari (Win 7)

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不一样的天空 2025-01-10 08:31:50

我也遇到过同样的问题。我通过在第一次调用executeSql 的回调中嵌套另一个事务来使其工作（我认为这非常难看，但就这样吧）。

context.db.db.transaction(function(tx) {
    tx.executeSql("SELECT coalesce(sum(pointsawarded),0) as points from eventhistory ", [], function(tx, res) {
        alert('h1' + JSON.stringify(res));
        context.db.db.transaction(function(txsafe) {
            txsafe.executeSql("SELECT coalesce(sum(pointsawarded),0) as points2 from eventhistory ", [], function(tx2, res2) {
                alert('h2' + JSON.stringify(res2));
            });
         });
     });
});

I've had this same problem. I have gotten it working by nesting another transaction inside the callback for the first call to executeSql (which I think is terribly ugly, but so be it).

context.db.db.transaction(function(tx) {
    tx.executeSql("SELECT coalesce(sum(pointsawarded),0) as points from eventhistory ", [], function(tx, res) {
        alert('h1' + JSON.stringify(res));
        context.db.db.transaction(function(txsafe) {
            txsafe.executeSql("SELECT coalesce(sum(pointsawarded),0) as points2 from eventhistory ", [], function(tx2, res2) {
                alert('h2' + JSON.stringify(res2));
            });
         });
     });
});

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