Question

当我点击“保存”或“取消”按钮时，我想忽略此布局，但我不能。 dialog.dismiss或dialog.cancel将无法正常工作。单击“保存”按钮时，它将起作用，但之后使用.close或.dismiss行将不会关闭布局。这是我的代码。

    private Dialog getAddDialog() {
    LayoutInflater inflater = LayoutInflater.from(this);
    View layout = inflater.inflate(R.layout.addLesson,null);


    Button save= (Button) layout.findViewById(R.id.btnSave);
    Button cancel= (Button) layout.findViewById(R.id.btnCancel);
    final EditText answer = (EditText) layout.findViewById(R.id.et);
    final Spinner sp = (Spinner) layout.findViewById(R.id.sp);

    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.lessons, android.R.layout.simple_spinner_item);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    sp.setAdapter(adapter);


    final DatePicker datePicker = (DatePicker) layout.findViewById(R.id.dp);


    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle("Add information");
    builder.setView(layout);
    final AlertDialog dialog = builder.create();
    builder.show();



    save.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            try {
                int day= datePicker.getDayOfMonth();
                int month= datePicker.getMonth()+1;
                int year= datePicker.getYear();

                DateFormat df = new SimpleDateFormat("dd/MM/yyyy");
                Date date = null;
                try {
                    date = df.parse(day+"/"+month+"/"+year);
                } catch (ParseException e) {
                    e.printStackTrace();
                }
                long date= date.getTime();
                int position= sp.getSelectedItemPosition();
                String lesson= (String) sp.getItemAtPosition(position);

                int lessonNumber= Integer.valueOf(answer.getText().toString());

                Student student= new Student (lesson,lessonNumber,date);

                Database db = new Database (getApplicationContext());
                long id = db.AddInfo(student);

                if (id==-1){
                    Toast.makeText(MainActivity.this, "Error", Toast.LENGTH_SHORT).show();
                }else{
                    Toast.makeText(MainActivity.this, "Successful", Toast.LENGTH_SHORT).show();
                }
                getList();

            } catch (NumberFormatException e) {
                Toast.makeText(MainActivity.this, "Please enter the number", Toast.LENGTH_SHORT).show();
            }
            dialog.dismiss(); // <-- DOESN'T WORK
        }
    });


    cancel.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            try {
                dialog.dismiss(); // <-- DOESN'T WORK

            } catch (Exception e) {
                Toast.makeText(MainActivity.this, "" +e.getMessage().toString(), Toast.LENGTH_SHORT).show();
            }

        }

    });
    return dialog;
}

Answer 1

删除此行

builder.show();

对于我来说，包括这一行，是强制关闭应用程序。但删除后，它工作正常，甚至单击按钮后对话框被解除。 Dialog应为show()而不是Builder

我无法关闭/解除对话框

1 个答案: