Show Long Message in AlertDialog

问题

I am trying to display an lengthy message in Default AlertDialog with following code.

public static void showAlert(String message, Context con) {
    AlertDialog.Builder dialog = new AlertDialog.Builder(con);
    dialog.setTitle(message);
    dialog.setPositiveButton(" OK ", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int id) {
            dialog.dismiss();

        }
    });
    dialog.show();

}

But when I pass long message Alert Dialog does not display full message. Can I align text of Dialog by center. I dont want to use Custom Dialog.

回答1:

Change

dialog.setTitle(message);

to

dialog.setMessage(message);

and if you want to center align the text, you'll have to create a textview like in the following example:

    AlertDialog.Builder dialog = new AlertDialog.Builder(con);
    dialog.setTitle(message);
    dialog.setPositiveButton(" OK ", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int id) {
            dialog.dismiss();

        }
    });
    dialog.show();

// Must call show() prior to fetching text view
TextView messageView = (TextView)dialog.findViewById(android.R.id.message);
messageView.setGravity(Gravity.CENTER);

taken from: Center message in android dialog box

回答2:

try following code

public static void showAlert(String message, Context con) {
    AlertDialog.Builder dialog = new AlertDialog.Builder(con);
    dialog.setMessage(message);
    dialog.setPositiveButton(" OK ", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int id) {
            dialog.dismiss();

        }
    });
    dialog.show();

}

回答3:

AlertDialog.Builder builder1 = new AlertDialog.Builder(getParent());

builder1.setTitle("Login Alert");

TextView myMsg = new TextView(getParent());

myMsg.setText("You have not logged in to save the product.Do you want to login?");

myMsg.setTextSize(20);

myMsg.setGravity(Gravity.CENTER_HORIZONTAL);

builder1.setView(myMsg);

来源：https://stackoverflow.com/questions/10699644/show-long-message-in-alertdialog