android-如何在dialog中獲取edittext的值

如何在dialog中獲取edittext的值

代碼如下，這樣獲取edittext.gettext（）.tostring（）值總為空，該怎麼改呢？

               final View viewDialog=(View)getLayoutInflater().inflate(R.layout.ad_dialog,null);
                new AlertDialog.Builder(Ad_Delete.this).setTitle("請輸入刪除數量（不能大於現有本數）")
                        .setView(getLayoutInflater().inflate(R.layout.ad_dialog, null))
                        .setPositiveButton("確定", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialogInterface, int i) {

                                EditText ad_delete_edit = (EditText)viewDialog.findViewById(R.id.ad_delete_number);
                                int deleteNumber = Integer.parseInt(ad_delete_edit.getText().toString());

                                if (deleteNumber > nowNumber || deleteNumber < 0) {
                                    Toast.makeText(Ad_Delete.this, "輸入數量有誤，請輸入不大於現有數量的數目", Toast.LENGTH_LONG).show();
                                } else {
                                    sqLiteOpenHelper_ad.getReadableDatabase().execSQL("updata Administrator_inf set book_totalnumber = ?, " +
                                                    "book_nownumber = ? where _id = ?",
                                            new Integer[]{totalNumber - deleteNumber, nowNumber - deleteNumber, id});
                                    Toast.makeText(Ad_Delete.this, "刪除成功！", Toast.LENGTH_LONG).show();
                                }
                            }
                        }).show();
            }
        });

最佳回答：

 final View viewDialog=(View)getLayoutInflater().inflate(R.layout.ad_dialog,null);
                new AlertDialog.Builder(Ad_Delete.this).setTitle("請輸入刪除數量（不能大於現有本數）")
                        .setView(getLayoutInflater().inflate(R.layout.ad_dialog, null))
    改成
    final View viewDialog=(View)getLayoutInflater().inflate(R.layout.ad_dialog,null);
                new AlertDialog.Builder(Ad_Delete.this).setTitle("請輸入刪除數量（不能大於現有本數）")
                        .setView(viewDialog)

    不然你獲取edittext的viewDialog不是dialog顯示的viewDialog