DialogFragment不解散 [英] DialogFragment not dismissing

问题描述

我环顾四周，一个解决方案，但似乎这不是一个普遍的问题。

I've looked around for a solution but it seems this is not a common problem.

我想在我的应用程序连接到服务器，然后明确表示，对话的请求完成时产生不确定的对话和微调显示不同的对话框。我使用了片段兼容包。问题是，在显示第2对话之前喷丝没有被删除。

I want to have an indeterminate dialog spinner while my app connects to a server then clear that dialog and display a different dialog when the request completes. I'm using the Fragment compatibility package. The problem is that the spinner is not being removed before the 2nd dialog is displayed.

下面是我的code，显示对话框，并应删除任何当前的对话框：

Here is my code that shows the dialogs, and should remove any current dialogs:

void displayDialog(int type, String message) {
    Log.i(logTag, "displayDialog: " + type);
    FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
    Fragment prev = getSupportFragmentManager().findFragmentByTag("dialog");
    if (prev != null) {
        Log.i(logTag, "removing previous dialog");
        ft.remove(prev); //TODO maybe use ((DialogFragment)dialog).dismiss(); ?
    }
    ft.addToBackStack(null);

    // Create and show the dialog.
    DialogFragment newFragment = DialogHelperFragment.newInstance(type, message);
    newFragment.show(ft, "dialog");
}

下面是调用code，我使用来解决此错误：

Here is the calling code that I'm using to troubleshoot this bug:

displayDialog(DialogHelperFragment.DIALOG_PROGRESS, null);
displayDialog(DialogHelperFragment.DIALOG_PURCHASE_SUCCESS, null);

下面是我相应的LogCat中输出：

Here's my corresponding LogCat output :

06-25 13:53:35.497: I/tag(11008): displayDialog: 8
06-25 13:53:35.497: I/tag(11008): displayDialog: 7
06-25 13:53:35.897: I/tag Dialog Helper(11008): Creating Dialog: 8
06-25 13:53:35.907: I/tag Dialog Helper(11008): Creating Dialog: 7

问题在于

Fragment prev = getSupportFragmentManager().findFragmentByTag("dialog");

由于第一个对话框尚未建立或时间displayDialog（）附再次调用返回null。

returns null because the first dialog hasn't been created or attached by the time displayDialog() is called again.

任何提示将是超级有帮助的。

Any tips would be super helpful.

推荐答案

我一直在寻找的是

getSupportFragmentManager().executePendingTransactions()

如这里。看来交易无需急于去。此调用赶紧通过事务。我的交易的顺序是现在如下：

as shown here. It seems the transaction wasn't in a hurry to go through. This call hurries the transaction through. The ordering of my transactions is as follows now:

06-26 10:45:43.800: I/tag(3303): displayDialog: 8
06-26 10:45:43.800: I/tag(3303): Previous Dialog Fragment is:null
06-26 10:45:43.810: I/tag(3303): displayDialog: 7
06-26 10:45:43.810: I/tag(3303): Previous Dialog Fragment is:DialogHelperFragment{40b44a78 #0 dialogHelp}
06-26 10:45:43.810: I/tag(3303): removing previous dialog
06-26 10:45:44.220: I/tag Dialog Helper(3303): Creating Dialog: 7

所以实际创建之前对话框中，键入8被删除。

so Dialog type 8 is removed before it is actually created.

我希望这有助于为那些谁卡住同样的问题。

I hope this helps for those who get stuck on the same problem.

修改

看来我也不得不删除 addToBackStack（空）

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