將boolean和int保存到sharedPrefs時遇到問題

我試圖爲我的Hangman遊戲創建一個endgame活動，並且我有一些提交的值比字符串更麻煩。將boolean和int保存到sharedPrefs時遇到問題

這是我的主要活動：

package com.assignment.hangman; 
import android.app.Activity; 


public class HangmanActivity extends Activity { 
    public static final String GAME_PREFERENCES = "Game Preferences"; 
    public static final String GAME_LOGIC = "Game Logic"; 
    public static final String GAME_LOGIC_GUESS = "Guessed letter"; 
    public static final String GAME_LOGIC_SCORE_STRING = "Unknow score"; 
    public static final boolean GAME_LOGIC_WIN_LOOSE = false; 
}

我得到sharedprefs這樣的：

mGameSettings = getSharedPreferences("GAME_PREFERENCES", Context.MODE_PRIVATE);

而這正是提交更改到編輯器時出現錯誤：

public void finishGame() { 
     //Commit different game variables so they can be used in the end game activity 
     Editor editor = mGameSettings.edit(); 
     editor.putString(GAME_LOGIC_SCORE_STRING, (tries + " of " + numberOfLives + " used")); 
     if (tries != numberOfLives){ 
      editor.putBoolean("GAME_LOGIC_WIN_LOOSE", true); 
     } 
     editor.commit(); 
     // Launch end game Activity 
     startActivity(new Intent(HangmanGameActivity.this, HangmanEndActivity.class)); 
    }

而改變活動後我重新獲取這樣的值：

 if (mGameSettings.contains("GAME_LOGIC_WIN_LOOSE")) { 
     Log.i(GAME_DEBUG, "Succes"); 
     boolean winLoose = mGameSettings.getBoolean("GAME_LOGIC_WIN_LOOSE", false); 
     if (winLoose) { 
      winLooseView.setText(R.string.you_win); 
     } else { 
      winLooseView.setText(R.string.you_loose); 
    } 
    }

但不知何故只有字符串被正確提交。我猜布爾值會恢復爲默認值false。

有人能幫我解釋一下嗎？

來源

2010-12-11 SQDK

如果您只想將數據從一個活動移動到另一個活動，我會將其附加到意圖。寫入共享內存意味着訪問電話存儲，這真的很慢。

你可以做它用這種方式：

Intent intent = new Intent(HangmanGameActivity.this, HangmanEndActivity.class); 
intent.putExtra(GAME_LOGIC_SCORE_STRING, tries + " of " + numberOfLives + " used"): 
intent.putExtra("GAME_LOGIC_WIN_LOOSE", true); 
startActivity(intent);

你會做EndActivity：

Intent intent = getIntent(); 
String gameString = intent.getStringExtra(GAME_LOGIC_SCORE_STRING, "default value"); 
boolean win = intent.getBooleanExtra(GAME_LOGIC_WIN_LOOSE, false);

來源

2010-12-11 11:05:43 Janusz

哇，這很容易。非常感謝快速回復。 – SQDK 2010-12-11 11:12:28

將boolean和int保存到sharedPrefs時遇到問題

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