如何更新具有从 Sqlite 填充的 Gridview 的片段 [英] How to update a Fragment that has a Gridview populated from Sqlite

问题描述

我有一个带有两个选项卡的 ViewPager，其中包含片段.在第一个片段中，我有一个使用 Sqlite Db 填充的 Gridview.

I have a ViewPager with two tabs which holds fragment. Inside the first fragment, I have a Gridview which is being populated with Sqlite Db.

我的 Activity 中有一个自定义警报对话框，它是 Fragment 的父级.

I have an custom alertdialog in my Activity, which is the parent of the Fragments.

当警报对话框关闭时，它会添加/删除/更新 Sqlite Db:

When the alertdialog closes, it either adds/removes/updates the Sqlite Db:

DataBaseHelper dbh = DataBaseHelper(this);
...
positiveButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        dbh.addVal(new TheData(editName.getText().toString(), editAge.getText().toString())); //adds a row to the Sqlite Db
        dialog.dismiss();
        //on dismiss, refresh the Fragment, which in turn will display the updated GridView.
    }
});
...

如何更新完成以下内容:

How can I update complete the following:

//on dismiss, refresh the Fragment, which in turn will display the updated GridView.

推荐答案

FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.detach(frag).attach(frag).commit(); //frag is my Fragment instance...

每次对话框关闭时，它都成功了……简单易行！

Each time the dialog closed and it did the trick... simple and easy!

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