Question

我对按钮有疑问。在基于达到玩级别1的分数后成功解锁级别2.我继续测试级别2并确保它可以基于分数要求解锁级别3，但是，在成功解锁级别3之后。级别2再次变为锁定。我真的不确定出了什么问题。我可能有我的逻辑错误或其他东西。在将Level 2按钮设置为启用true后，它应该已经保持启用（true）。我将展示我的代码相关。知道答案的人请指导我。

这是在LevelPage活动中，它包含所有级别按钮，供用户选择要播放的级别，因为此活动中的代码太长，我将只显示相关内容。

    DBHelper db = new DBHelper(LevelPage.this);
    HashMap<String,String> data = db.getData();
    final String level1Score = data.get("LEVEL1");
    final String level2Score = data.get("LEVEL2");
    final String level3Score = data.get("LEVEL3");
    final String level4Score = data.get("LEVEL4");

    btnLevel1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            clickSound.start();
            Intent intent = new Intent(LevelPage.this, Level1.class);
            startActivity(intent);
        }
    });

    if (level1Score != null && level1Score.equals("30")) {
        btnLevel2.setEnabled(true);
    btnLevel2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
                clickSound.start();
                Intent intent = new Intent(LevelPage.this, Level2.class);
                startActivity(intent);

            }
        });

    } else {
        btnLevel2.setEnabled(false);
    }

    if (level2Score != null && level2Score.equals("35")) {
        btnLevel3.setEnabled(true);
        btnLevel3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                clickSound.start();
                Intent intent = new Intent(LevelPage.this, Level3.class);
                startActivity(intent);

            }
        });
    } else {
        btnLevel3.setEnabled(false);
    }

这是Level2页面，用户在该页面上玩游戏并确保获得35分解锁：

else if (score == 35) {
                DBHelper db = new DBHelper(Level2.this);
                db.saveData(2,"35");
                AlertDialog.Builder builder = new 
AlertDialog.Builder(Level2.this);
                builder.setTitle("Level 2 Complete!");
                builder.setMessage("You have won! You have unlock level 3! 
You can proceed to Level 3 or go back.");
                builder.setPositiveButton("Unlock", new 
DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Intent intent = new Intent(Level2.this, 
LevelPage.class);
                        startActivity(intent);
                        finish();
                    }
                });

这是要保存并获取分数数据的SQLite数据库：

 private static final int DATABASE_VERSION = 1;
 private static final String DATABASE_NAME = "Level";
 private static final String USERTABLE = "USER_INFO";
 private static final String KEY_ID = "id";
 private static final String LEVEL1 = "LEVEL1";
 private static final String LEVEL2 = "LEVEL2";
 private static final String LEVEL3 = "LEVEL3";
 private static final String LEVEL4 = "LEVEL4";

private static final String CREATE_TABLE_USER = "CREATE TABLE IF NOT EXISTS "
        + USERTABLE + "(" + KEY_ID + " INTEGER PRIMARY KEY,"
        + LEVEL1 + " TEXT,"
        + LEVEL2 + " TEXT,"
        + LEVEL3 + " TEXT,"
        + LEVEL4 + " TEXT " + ");";

/*private static final String CREATE_TABLE_USER = "CREATE TABLE IF NOT EXISTS "
        + USERTABLE + "(" + KEY_ID + " INTEGER PRIMARY KEY," + LEVEL1 + " TEXT,"
        + LEVEL2 + " TEXT"+");"; */

private static final String SQL_DELETE_ENTRIES =
        "DROP TABLE IF EXISTS " + USERTABLE;

public DBHelper(Context context) {
    super(context, DATABASE_NAME, null, DATABASE_VERSION);
}

@Override
public void onCreate(SQLiteDatabase db) {
    db.execSQL(CREATE_TABLE_USER);
}

//to save score in db according to the level
public void saveData(int level,String score){
    SQLiteDatabase db = this.getWritableDatabase();
    ContentValues data = new ContentValues();
    switch(level){
        case 1:
            data.put(LEVEL1, score);
            break;
        case 2:
            data.put(LEVEL2,score);
            break;
        case 3:
            data.put(LEVEL3,score);
            break;
        case 4:
            data.put(LEVEL4,score);
            break;
    }
    db.insert(USERTABLE,null,data);
    db.close();
}


//to get score from db
//you can modify this function if you want to get score for a specific level
public HashMap<String,String> getData(){
    HashMap<String,String> scoreMap = new HashMap<>();
    String selectQuery = "SELECT  * FROM " + USERTABLE ;
    SQLiteDatabase db = this.getWritableDatabase();
    Cursor cursor = db.rawQuery(selectQuery, null);
    if (cursor.moveToFirst()) {
        do {

            scoreMap.put(LEVEL1,cursor.getString(cursor.getColumnIndex(LEVEL1)));
            scoreMap.put(LEVEL2,cursor.getString(cursor.getColumnIndex(LEVEL2)));
            scoreMap.put(LEVEL3,cursor.getString(cursor.getColumnIndex(LEVEL3)));
            scoreMap.put(LEVEL4,cursor.getString(cursor.getColumnIndex(LEVEL4)));
        } while (cursor.moveToNext());
    }
    cursor.close();
    return scoreMap;

}

注意：同样适用于3级和4级。即使在4级解锁后，3级也会再次锁定2级。结果会继续重复，它会在下一级解锁，但会锁定前一级突然

放置SharedPrefences：

 else if (score == 30) {
                /*DBHelper db = new DBHelper(Level1.this);
                db.saveData(1,"30"); */
                AlertDialog.Builder builder = new 
 AlertDialog.Builder(Level1.this);
                builder.setTitle("Level 1 Complete!");
                builder.setMessage("You have won! You have unlock level 2! You can proceed to Level 2 or go back.");
                builder.setPositiveButton("Unlock", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Intent intent = new Intent(Level1.this, LevelPage.class);
                        startActivity(intent);
                        finish();
                    }
                });

                builder.setCancelable(false);
                builder.show();
                runTimer.cancel();
            }

Answer 1

以下是可在我们的案例中使用的SharedPreference的概述将级别分数写入SharedPreference：
你的saveData（）方法将如下所示。

col-lg-offset-5

从SharedPreference读取：

public void saveData(String level, int score) {
SharedPreferences sharedPref = context.getSharedPreferences("score.xml",
    Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPref.edit();
editor.putInt(getString(level, score); editor.commit();
}

您可以获得有关SharedPreference here的更多信息 修改：

public int getLevelScore(String level) {
SharedPreferences sharedPref = context.getSharedPreferences("score.xml", Context.MODE_PRIVATE);
int levelScore = sharedPref.getInt(level, defaultScoreForLevel);
return levelScore;
}

每当用户得分时调用saveData（）方法。

解锁另一个按钮后，按钮再次锁定

1 个答案: