Question

我想编写一个函数，显示一个警告对话框，根据点击的按钮返回布尔值

private Boolean ShowWarningMessageBox(String Title, String message)
{
    boolean returnValue = false;

    AlertDialog.Builder builder = new AlertDialog.Builder(
            getApplicationContext());

    builder.setTitle(Title);
    builder.setPositiveButton("OK", new DialogInterface.OnClickListener()
    {
        public void onClick(DialogInterface dialog, int id)
        {
            returnValue = true;
        }
    });

    builder.setNegativeButton("Cancel",
            new DialogInterface.OnClickListener()
            {
                public void onClick(DialogInterface dialog, int id)
                {
                    dialog.cancel();
                    returnValue = false;
                }
            });

    builder.show();

    return returnValue;
}

我编写了上面的函数，但问题是，Inner类将无法访问returnValue变量，因为它不是final。但是让它成为最终的并不符合我的目的。

我是一名c＃开发人员，我正在尝试在android

中实现类似下面的内容

private DialogResult ShowWarningMessageBox(string errorMessage)
    {
        DialogResult result = MessageBox.Show(errorMessage,
                 Resources.WarningCaption.ToString(),
                 MessageBoxButtons.YesNo, MessageBoxIcon.Asterisk,
                 MessageBoxDefaultButton.Button1);

        return result;
    }

任何帮助将不胜感激

Answer 1

完整解决方案试试这个

1）创建界面

import android.content.DialogInterface;

public interface AlertMagnatic {

    public abstract void onButtonClicked(boolean value);

}

2）确认对话框的通用方法。

public static void getConfirmDialog(final Context mContext,
            final String title, final String msg,
            final String positiveBtnCaption, final String negativeBtnCaption,
            final boolean isCancelable, final AlertMagnatic target) {

        ((Activity) mContext).runOnUiThread(new Runnable() {

            @Override
            public void run() {
                AlertDialog.Builder builder = new AlertDialog.Builder(mContext);

                int imageResource = android.R.drawable.ic_dialog_alert;
                Drawable image = mContext.getResources().getDrawable(
                        imageResource);

                builder.setTitle(title)
                        .setMessage(msg)
                        .setIcon(image)
                        .setCancelable(false)
                        .setPositiveButton(positiveBtnCaption,
                                new DialogInterface.OnClickListener() {
                                    public void onClick(DialogInterface dialog,
                                            int id) {
                                        target.onButtonClicked(true);
                                    }
                                })
                        .setNegativeButton(negativeBtnCaption,
                                new DialogInterface.OnClickListener() {
                                    @Override
                                    public void onClick(DialogInterface dialog,
                                            int id) {
                                        target.onButtonClicked(false);
                                    }
                                });

                AlertDialog alert = builder.create();
                alert.setCancelable(isCancelable);
                alert.show();
                if (isCancelable) {
                    alert.setOnCancelListener(new OnCancelListener() {

                        @Override
                        public void onCancel(DialogInterface arg0) {
                            target.onButtonClicked(false);
                        }
                    });
                }
            }
        });

    }

3）如何使用

getConfirmDialog(getString(R.string.logout), getString(R.string.logout_message), getString(R.string.yes), getString(R.string.no), false,
                new AlertMagnatic() {


                    @Override
                    public void onButtonClicked(boolean value) {

                    }
                });

对话框泛型函数 - 根据用户按钮返回布尔值

1 个答案: