java - 只需一次编辑而不是两次(AlertDialog)

Question

新的一天 - 新的问题:

我想要一个按钮，它启动一个AlertDialog，用户可以在其中更改随机数的范围

我的问题是:它只显示一项编辑，我不知道为什么

(顺便说一句:应用程序不会崩溃:我得到一个随机数，我只是不知道它来自哪里)

下面是我的代码:

String s;

public void btn_own(View view) {
    int a, b, c;        // a : untere Grenze , b : obere Grenze


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

        alert.setTitle("Enter range");

        final EditText inputa = new EditText(this);
        final EditText inputb = new EditText(this);
        alert.setView(inputa);
        alert.setView(inputb);

            alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int whichButton) {

                    int aa = 0;
                    int bb = 0;
                    int cc = 0;
                    int e = 0;
                    try {
                        aa = Integer.parseInt(inputa.getText().toString());
                    }   catch (NumberFormatException f) {
                        System.out.println("not a number: " + inputa.getText().toString());
                        f.printStackTrace();
                    }

                    try {
                        bb = Integer.parseInt(inputb.getText().toString());
                    }   catch (NumberFormatException g) {
                        System.out.println("not a number: " + inputb.getText().toString());
                        g.printStackTrace();
                    }
                    cc = bb - aa;
                    Random rand = new Random();
                    int d = rand.nextInt(cc);
                    e = d + bb;
                    Integer out = new Integer(e);
                    s = out.toString();

                    new AlertDialog.Builder(Decider.this)
                            .setMessage(s)
                            .show();

                }
            });
        alert.show();



}   

希望你能帮助我..我是开发新手，这是我的第一个真正的项目

Answer 1

第二个 View 会覆盖 AlertDialog 中的第一个 View ，您只放置了一个 View !所以使用线性布局技巧如下:

字符串；

public void btn_own(View view) {
    int a, b, c;        // a : untere Grenze , b : obere Grenze


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

    alert.setTitle("Enter range");
     LinearLayout linearLayout = new LinearLayout(context);
     linearLayout.setOrientation(1);
     linearLayout.setGravity(Gravity.CENTER);


    final EditText inputa = new EditText(this);
    final EditText inputb = new EditText(this);
     linearLayout.addView(inputa );
     linearLayout.addView(inputb );

    alert.setView(linearLayout );


        alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int whichButton) {

                int aa = 0;
                int bb = 0;
                int cc = 0;
                int e = 0;
                try {
                    aa = Integer.parseInt(inputa.getText().toString());
                }   catch (NumberFormatException f) {
                    System.out.println("not a number: " + inputa.getText().toString());
                    f.printStackTrace();
                }

                try {
                    bb = Integer.parseInt(inputb.getText().toString());
                }   catch (NumberFormatException g) {
                    System.out.println("not a number: " + inputb.getText().toString());
                    g.printStackTrace();
                }
                cc = bb - aa;
                Random rand = new Random();
                int d = rand.nextInt(cc);
                e = d + bb;
                Integer out = new Integer(e);
                s = out.toString();

                new AlertDialog.Builder(Decider.this)
                        .setMessage(s)
                        .show();

            }
        });
    alert.show();

}