Android Studio在開始遊戲後顯示對話框

Question

我目前正在編程一款遊戲，並且在按鈕「開始遊戲」之前表示會出現一個單獨的對話框，其中會解釋遊戲的位置。我仍然可以自己得到它！但是我想每個玩家只會出現一次這個對話框，之後再也不會出現！有人知道一種方法嗎？

Answer 1

與@Isaac佩恩所提供的代碼的幫助下，我修改爲Dialog的代碼。

public class MyApp extends Application { 

    SharedPreferences mPrefs; 

    @Override 
    public void onCreate() { 
     super.onCreate(); 

     Context mContext = this.getApplicationContext(); 
       //0 = mode private. only this app can read these preferences 
     mPrefs = mContext.getSharedPreferences("myAppPrefs", 0); 


     // the rest of your app initialization code goes here 
     if(getFirstRun()) { 

     final Dialog dialog = new Dialog(your_activity_context.this); 
     dialog.requestWindowFeature(Window.FEATURE_NO_TITLE); //if not title window required. 
     dialog.setContentView(your_layout_to_show_as_window); 

     // initialize your views from the layout    
     setRan(); 
     dialog.show(); 
     } 
    } 

    public boolean getFirstRun() { 
     return mPrefs.getBoolean("firstRun", true); 
    } 

    public void setRan() { 
     SharedPreferences.Editor edit = mPrefs.edit(); 
     edit.putBoolean("firstRun", false); 
     edit.commit(); 
    } 
} 

Answer 2

看一看SharedPreferences

E.g：

public class MyApp extends Application { 

    SharedPreferences mPrefs; 

    @Override 
    public void onCreate() { 
     super.onCreate(); 

     Context mContext = this.getApplicationContext(); 
       //0 = mode private. only this app can read these preferences 
     mPrefs = mContext.getSharedPreferences("myAppPrefs", 0); 


     // the rest of your app initialization code goes here 
     if(getFirstRun()) { 
      //Show dialog 
     } 
    } 

    public boolean getFirstRun() { 
     return mPrefs.getBoolean("firstRun", true); 
    } 

    public void setRan() { 
     SharedPreferences.Editor edit = mPrefs.edit(); 
     edit.putBoolean("firstRun", false); 
     edit.commit(); 
    } 
}