SharedReferences不工作（android.app）。SharedPreferencesImpl@4103cd78&引用；

我试图在MathActivity和ScoreActivity之间传递一个分数整数。在要显示分数的ScoreActivity中，它显示score:android.app。SharedPrefencesImpl@4103cd78.我猜我的SharedReference没有正确设置

MathActivity

public class MathActivity extends Activity {

public static final String SAVED_DATA = "savedData";

private int SCORE = 0;


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

    SharedPreferences preferences = getSharedPreferences(SAVED_DATA,MODE_PRIVATE); 
    SharedPreferences.Editor editor = preferences.edit();
    editor.putInt("SCORE", SCORE);
    editor.commit();

public class ScoreActivity extends Activity {

public static final String SAVED_DATA = "savedData";

private int SCORE = 0; 

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

    SharedPreferences preferences = getSharedPreferences(SAVED_DATA,MODE_PRIVATE);
    SCORE = preferences.getInt("SCORE", SCORE);


    TextView tvScore = (TextView)findViewById(R.id.tvscore);
    tvScore.setText("Score: " + preferences);

评分活动

public class MathActivity extends Activity {

public static final String SAVED_DATA = "savedData";

private int SCORE = 0;


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

    SharedPreferences preferences = getSharedPreferences(SAVED_DATA,MODE_PRIVATE); 
    SharedPreferences.Editor editor = preferences.edit();
    editor.putInt("SCORE", SCORE);
    editor.commit();

public class ScoreActivity extends Activity {

public static final String SAVED_DATA = "savedData";

private int SCORE = 0; 

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

    SharedPreferences preferences = getSharedPreferences(SAVED_DATA,MODE_PRIVATE);
    SCORE = preferences.getInt("SCORE", SCORE);


    TextView tvScore = (TextView)findViewById(R.id.tvscore);
    tvScore.setText("Score: " + preferences);

---

您的分数将从

perferences

中检索并存储在

score

中

请参阅：

SCORE=preferences.getInt（“SCORE”，SCORE）

更改：

vScore.setText("Score: " + preferences);

到

（也不要对变量名使用所有的大写字母，它们通常用于contant）

您应该更改

tvScore.setText("Score: " + preferences);

到

---

但是您在哪里为您的share pre设置了一个值？@SimplePlan我是新手，所以我不确定我的SharedReferences是否正确设置？如果您指的是分数整数值，则在回答正确后，它将在MathActivity中设置。

SCORE++；tvScore.setText（“Poäng:+SCORE”）

我认为使用

SharedReferences preferences=this.getSharedReferences（已保存的数据，模式为私有）是一种很好的做法；

。这与你问的问题无关，只是想分享一下信息。@Aniruddha谢谢！我是新手，所以我很感谢得到的任何提示！如果我做了更改，我会收到一条错误消息，说不能对基本类型int调用toString（）？