Android:我可以一个显示多个Dialogs吗？是否有类似Dialog Z-Level的东西？

Question

是否可以一个接一个地显示多个对话框？是否有类似Dialog Z-Level的东西？我正在使用DialogFragment,用户选择元素,当他确认他的选择时,它被保存到数据库并在服务器上发送.如果保存操作失败,我想通知用户...另一个对话框是否可能？它不会清除我的第一个对话吗？提前致谢.

Answer 1

实际上，可以一个在另一个中显示多个对话框片段。z 顺序取决于它们的创建顺序。

在下面的代码中有一个 FragmentActivity 的示例，其中包含您需要的行为。

public class MyActivity extends FragmentActivity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        //...    
    }

    public void onSave(View view) {
        Intent intent = getIntent();

        this.setResult(RESULT_OK, intent);
        finish();
    }

    public void onCancel(View view) {
        finish();
    }

    public void SelectWeekDay(View view) {
        DialogFragment selectWeekDayFragment = new SelectWeekDayFragment();
        selectWeekDayFragment.show(getSupportFragmentManager(), "WeekDayDialog");
    }

    public class SelectWeekDayFragment extends DialogFragment {

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
            View view = inflater.inflate(R.layout.week_day_dialog, container, true);

            Button saveButton = (Button) view.findViewById(R.id.button_save);
            saveButton.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View view) {
                    CheckBox checkboxMonday = (CheckBox) getDialog().findViewById(R.id.checkBox_monday);
                    if (!checkboxMonday.isChecked()) {
                        DialogFragment saveErrorFragment = new SaveErrorFragment();
                        saveErrorFragment.show(getSupportFragmentManager(), "SaveErrorFragment");
                    }
                    else {
                        SaveToDb(); //Perform actions to store on db or what you wish
                        dismiss();  
                    }
                }
            });

            Button cancelButton = (Button) view.findViewById(R.id.button_cancel);
            cancelButton.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {
                    dismiss();
                }
            });

            return view;    
        }
    }

    public class SaveErrorFragment extends DialogFragment {

        @Override
        public Dialog onCreateDialog(Bundle savedInstanceState) {
            return new AlertDialog.Builder(getActivity())
            .setMessage("You must select Monday").setPositiveButton("Ok", null).create();
        }
    }
}