Question

BlackBerry OS（v.4 - 6）是否有模式对话框，其中包含文本输入字段？

我有一个图形应用程序，我想避免在它的画布上绘画，只是在用户的脸上抛出一个模态并要求一小段文字。

Answer 1

请尝试以下代码：

Dialog dialog = new Dialog(Dialog.D_OK, "Title", 0, null, 0);
EditField ef = new EditField("Input: ", "");
((DialogFieldManager)dialog.getDelegate()).getCustomManager().add(ef);

// show modal dialog, wait for response
dialog.doModal();

// get the input text
Dialog.alert(ef.getText());

要进行更多自定义，需要扩展net.rim.device.api.ui.component.Dialog。以下代码将执行与上述相同的操作。

class InputDialog extends Dialog {
    private EditField inputField;

    public InputDialog() {
        super(Dialog.D_OK, "Input Dialog", 0, null, 0);
        Manager delegate = getDelegate();
        if (delegate instanceof DialogFieldManager) {
            DialogFieldManager dfm = (DialogFieldManager) delegate;
            Manager manager = dfm.getCustomManager();
            inputField = new EditField("Input: ", "", 50, EditField.EDITABLE);
            if (manager != null) {
                manager.insert(inputField, 0);
            }
        }
    }

    public String getInputText() {
        return (inputField == null) ? "" : inputField.getText();
    }
}

用法：

InputDialog seaerchDialog = new InputDialog();
// show modal dialog, wait for response
seaerchDialog.doModal();        
// get the input text
Dialog.alert(seaerchDialog.getInputText());

Answer 2

请尝试以下代码：

保持这些全球性：

Dialog dialog;    
BasicEditField bEditField = new BasicEditField();

然后像这样制作自定义对话框：

dialog = new Dialog(Dialog.OK, "Enter Value:", Dialog.OK, null, Dialog.DEFAULT_CLOSE);
dialog.add(bEditField);

从某个按钮或菜单操作中调用dialog.doModal()：

int i = dialog.doModal();
if(i == Dialog.OK) {
    Dialog.inform("The Input Text is : " + bEditField.getText());
}

黑莓模态文本输入

2 个答案: