Question

我试图找出当我点击发送按钮时弹出确认对话框的方法。香港专业教育学院尝试了许多不同的方式，我似乎无法使它成为work.code到目前为止

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

builder.setTitle("Confirm");
builder.setMessage("Are you sure?");

builder.setPositiveButton("YES", new DialogInterface.OnClickListener() {

    public void onClick(DialogInterface dialog, int which) {
        // Do nothing but close the dialog

        dialog.dismiss();
    }
});

builder.setNegativeButton("NO", new DialogInterface.OnClickListener() {

    @Override
    public void onClick(DialogInterface dialog, int which) {

        // Do nothing
        dialog.dismiss();
    }
});

AlertDialog alert = builder.create();
alert.show();



public void send(View v) {



    new Send().execute();


}

Answer 1

您需要在onclick 内调用alert.show()方法。

将您的代码更改为

public void send(View v) { AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle("Confirm"); builder.setMessage("Are you sure?"); builder.setPositiveButton("YES", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { new Send().execute(); dialog.dismiss(); } }); builder.setNegativeButton("NO", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); } }); AlertDialog alert = builder.create(); alert.show(); }

在xml文件中，为发送按钮添加此行。

android:onClick="send"

Answer 2

Try this:



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

    builder.setTitle("Confirm");
    builder.setMessage("Are you sure?");

    builder.setPositiveButton("YES", new DialogInterface.OnClickListener() {

        public void onClick(DialogInterface dialog, int which) {
            // Do nothing but close the dialog
           new Send().execute();
           dialog.dismiss();
        }
    });

    builder.setNegativeButton("NO", new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {

            // Do nothing
            dialog.dismiss();
        }
    });

    AlertDialog alert = builder.create();
    alert.show();

最重要的是：你可以在任何地方创建对话框的实例，但你应该把alert.show（）;在方法send（），

中

我试图找出当我点击发送按钮时弹出确认对话框的方法

2 个答案: