Question

我正在尝试创建一个包含消息和复选框的对话框。我使用以下代码

private void displayWarning() {

    SharedPreferences prefs;
    final String PREFS_NAME = "UserData";
    final String PREF_SHOW_WARNING_KEY = "show_warning";

    prefs = this.getActivity().getSharedPreferences(PREFS_NAME, 0);

    final String[] items = {"do not show again"};
    final boolean[] itemsChecked = {false};

    boolean displayWarnings = prefs.getBoolean(PREF_SHOW_WARNING_KEY, true);

    if (displayWarnings) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getContext());
        builder.setMessage("this is a warning")
                .setCancelable(false)
                .setMultiChoiceItems(items, itemsChecked, new OnMultiChoiceClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                        if (isChecked) {
                            itemsChecked[which] = false;
                        } else {
                            itemsChecked[which] = true;
                        }

                    }
                })
                .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        // do things
                    }
                });
        AlertDialog alert = builder.create();
        alert.show();
    }
    if (itemsChecked[0]) {
        displayWarnings = false;
    }
    else {
        displayWarnings = true;
    }
    prefs.edit().putBoolean(PREF_SHOW_WARNING_KEY, displayWarnings).commit();
}

运行此代码时，复选框和文本＆＃34;不再显示＆＃34; doens没有显示出来。当我删除消息时（＆＃34;这是一个警告＆＃34;），我确实得到了复选框。此外，当我将消息更改为标题时，我会收到复选框，但原始消息太长而无法在标题中使用...

希望这样做。最重要的是，我想要一个包含消息和复选框的对话框供用户检查，这样对话框就不会再显示了。

Answer 1

警报对话框适合只显示一种类型的消息。

所以，据我所知，如果你想要查看短信而不是多重发票，你必须使用自定义布局。

StackOverflow上有很多关于同一个项目的类似问题，每个人都有相同的建议：使用“复杂”布局的自定义布局。

观看以下链接：

Create AlertDialog with both MultiChoiceItems and message

Android : Alert Dialog with Multi Choice

Answer 2

看看这个例子。我有一个带复选框的警告对话框。它工作正常：

public class StartActivity extends AppCompatActivity {

SharedPreferences sharedpreferences;
String email_pref;
String passw_pref;
Boolean remember;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_start);

    sharedpreferences = getSharedPreferences("MyPreferences", Context.MODE_PRIVATE);
    email_pref = sharedpreferences.getString("EMAIL_SAVED", "");
    passw_pref = sharedpreferences.getString("PASSW_SAVED", "");
    remember = sharedpreferences.getBoolean("REMEMBER", false);
}


public void SignIn(View v){
   // dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
    // custom dialog
    final Dialog dialog = new Dialog(StartActivity.this);
    dialog.setContentView(R.layout.sign_in_layout);    //il suo layout personalizzato
    dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
    // set the custom dialog components - text, image and button
    final EditText email = (EditText) dialog.findViewById(R.id.editEmailSignIn);
    final EditText password = (EditText) dialog.findViewById(R.id.editPasswordSignIn);
    final CheckBox rememberCheck = (CheckBox) dialog.findViewById(R.id.check_in);


    if(remember == true && !email_pref.equals("") && !passw_pref.equals("")){
        email.setText(email_pref);
        password.setText(passw_pref);
        rememberCheck.setChecked(true);
    }

    Button dialogButton = (Button) dialog.findViewById(R.id.btn_confirm_signin);
    dialogButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String mail = email.getText().toString();
            String psw = password.getText().toString();
            //QUERY AL DB PER VEDERE SE L'UTENTE ESISTE E ACCESSO EVENTUALE ALL'ACTIVITY SUCCESSIVA OPPURE ERRORE
            String query = "SELECT email, password FROM users WHERE email='" + mail + "' AND password = '" + psw + "'";
            final SQLiteDatabase db = openOrCreateDatabase("AuctionDB", MODE_PRIVATE, null);
            //db.execSQL(query);
            Cursor c = db.rawQuery(query, null);
            if(!c.moveToFirst()){
                Toast.makeText(getApplicationContext(),"No matches!", Toast.LENGTH_LONG).show();
            }else{
                //Toast.makeText(getApplicationContext(),"UTENTE TROVATO", Toast.LENGTH_LONG).show();
                dialog.dismiss();

                if(rememberCheck.isChecked()){
                    SharedPreferences.Editor editor = sharedpreferences.edit();
                    editor.putString("EMAIL_SAVED", email.getText().toString());
                    editor.putString("PASSW_SAVED", password.getText().toString());
                    editor.putBoolean("REMEMBER", true);
                    editor.commit();
                }else{
                    SharedPreferences.Editor editor = sharedpreferences.edit();
                    editor.putString("EMAIL_SAVED", "");
                    editor.putString("PASSW_SAVED", "");
                    editor.putBoolean("REMEMBER", false);
                    editor.commit();
                }

                //pass to the ViewActivity
                Intent intent = new Intent(StartActivity.this, ViewActivity.class);
                Bundle b = new Bundle();
                b.putString("email", mail);
                intent.putExtras(b);
                startActivity(intent);
                finish();
            }

        }
    });
    dialog.show();
}

整个例子是：

https://github.com/alessandroargentieri/AuctionExample

AlertDialog仅在不使用消息时显示多个选项

2 个答案: