我可以将xml中已有的按钮设置为对话框中的正按钮或负按钮吗?

Question

我宁愿不使用警报对话框，但如果我可以将正按钮设置为我已经拥有的按钮，我会的。 如果我不能做到这一点，有没有办法在自定义对话框中设置正按钮和负按钮？

Answer 1

您可以使用以下自定义警报对话框。

public class CustomAlertDialog {
    public void showDialog(Context activity, String msg, String buttonText, final CustomDialogListener customDialogListener){ //one button with callback
        final Dialog dialog = new Dialog(activity);
        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        dialog.setCancelable(false);
        dialog.setContentView(R.layout.custom_alert);
        TextView text = (TextView) dialog.findViewById(R.id.text_alertdialog);
        text.setText(msg);
        Button dialogButton = (Button) dialog.findViewById(R.id.btn_alert_dialog);
        dialogButton.setText(buttonText);
        dialogButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.dismiss();
                customDialogListener.onPositiveButtonClick();
            }
        });
        dialog.show();
    }
    public void showDialog(Context activity, String msg, String positiveButtonText, String negativeButtonText, final CustomDialogListener customDialogListener){//two button with callback
        final Dialog dialog = new Dialog(activity);
        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        dialog.setCancelable(false);
        dialog.setContentView(R.layout.custom_alert_two_button);
        TextView text = (TextView) dialog.findViewById(R.id.text_alert_two_dialog);
        text.setText(msg);
        Button positiveDialogButton = (Button) dialog.findViewById(R.id.btn_alert_two_dialog_YES);
        Button negativeDialogButton = (Button) dialog.findViewById(R.id.btn_alert_two_dialog_NO);
        positiveDialogButton.setText(positiveButtonText);
        negativeDialogButton.setText(negativeButtonText);
        positiveDialogButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.dismiss();
                customDialogListener.onPositiveButtonClick();
            }
        });
        negativeDialogButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.dismiss();
                customDialogListener.onNegativeButtonClick();
            }
        });
        dialog.show();
    }

    public void showDialog(Context activity, String msg, String buttonText){ //simple alert without callback
        final Dialog dialog = new Dialog(activity);
        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        dialog.setCancelable(false);
        dialog.setContentView(R.layout.custom_alert);
        TextView text = (TextView) dialog.findViewById(R.id.text_alertdialog);
        text.setText(msg);
        Button dialogButton = (Button) dialog.findViewById(R.id.btn_alert_dialog);
        dialogButton.setText(buttonText);
        dialogButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.dismiss();
            }
        });
        dialog.show();
    }
}

custom_alert.xml包含一个按钮和一个用于显示消息的文本视图。

custom_alert_two_button.xml包含两个按钮和一个用于显示消息的文本视图。

最后一个仅包含一个用于显示消息的文本视图。