尝试获取警报对话框以根据所选选项更改文本视图

Question

我希望对话框根据所选选项显示正确的文本（即，如果按下两次，我想要显示文本“您按下两次”），

在第一次按下时，它似乎没有执行任何操作，文本将转到初始化 在第二次按下时，您会发现文本已切换为默认值，

我是 Android 新手，我认为我不明白该活动在这里做什么。 有人可以帮我找到一种有效的方法吗？

public class AndMainT extends Activity {
private GameLogicT myGame = new GameLogicT();

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    Button b_com = (Button)findViewById(R.id.button);
    b_com.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            CharSequence[] pick_one = {"ONE", "TWO", "THREE"};
            call_menu(pick_one);
            updateAwesomeText();
        }
    });
}

public void updateAwesomeText(){
    TextView newText = (TextView)findViewById(R.id.text);
    newText.setText(myGame.getCurrent_opt().getDescription() + "\n");
}

public void call_menu(CharSequence[] items){
    final CharSequence[] f_items = items;

    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle("Orders Captain?");
    builder.setItems(f_items, new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int item) {
            myGame.startOpt(item);
        }
    });
    builder.show();
}
}


public class GameLogicT {
class GOpt{
    private CharSequence description = "this is the intialized text sadface";

    public CharSequence getDescription() {
        return description;
    }
    public void setDescription(CharSequence description) {
        this.description = description;
    }
}

private GOpt current_opt = new GOpt();

public void startOpt(int item){
    switch(item){
    case 1:
        current_opt.setDescription("you pressed ONE");
    case 2:
        current_opt.setDescription("you pressed TWO");
    case 3:
        current_opt.setDescription("you pressed THREE");
    default:
        current_opt.setDescription("I am a fart and think you have pressed nothing sadface");
    }
}

public GOpt getCurrent_opt() {
    return current_opt;
}
public void setCurrent_opt(GOpt current_opt) {
    this.current_opt = current_opt;
}
}

我也尝试过，

   public void onClick(View v) {
        CharSequence[] pick_one = {"ONE", "TWO", "THREE"};
        call_menu(pick_one);
        try {
                wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        updateAwesomeText();
    }

    public void onClick(DialogInterface dialog, int item) {
        myGame.startOpt(item);
        notify();
    }

这会在按下按钮时强制关闭，这不是我的问题，只是说我尝试过！

Answer 1

抱歉，由于工作量很大，我无法测试您的代码。
然而，查看后我注意到以下内容：

1）我认为项目的位置从索引 0 开始。
2) 也许你在 switch-case 语句中丢失了一些 break

所以，尝试将其替换为：

public void startOpt(int item){
  switch(item){

    case 0:
       current_opt.setDescription("you pressed ONE");
    break;

    case 1:
      current_opt.setDescription("you pressed TWO");
    break;

    case 2:
      current_opt.setDescription("you pressed THREE");
    break;

    default:
      current_opt.setDescription("I am a fart and think you have pressed nothing sadface"); 
  } 
}

希望它对你有帮助！