用SharedPreferences寫的存儲工具類

    public class PersistenceUtil {

        private Context context;


    public Context getContext() {  
        return context;  
    }  

    public void setContext(Context context) {  
        this.context = context;  
    }  

    public PersistenceUtil(Context context) {  
        this.context = context;  
    }  

    public void savePersistence(String name, String key, Integer value) {  
        SharedPreferences sharedPreferences = context.getSharedPreferences(  
                name, Context.MODE_PRIVATE);  
        Editor editor = sharedPreferences.edit();  
        editor.putInt(key, value);  
        editor.commit();  
    }  

    public void savePersistence(String name, String key, String value) {  
        SharedPreferences sharedPreferences = context.getSharedPreferences(  
                name, Context.MODE_PRIVATE);  
        Editor editor = sharedPreferences.edit();  
        editor.putString(key, value);  
        editor.commit();  
    }  

    public void savePersistence(String name, String key, Boolean value) {  
        SharedPreferences sharedPreferences = context.getSharedPreferences(  
                name, Context.MODE_PRIVATE);  
        Editor editor = sharedPreferences.edit();  
        editor.putBoolean(key, value);  
        editor.commit();  
    }  

    public String getPersistenceString(String name, String key) {  
        SharedPreferences sharedPreferences = context.getSharedPreferences(  
                name, Context.MODE_PRIVATE);  
        String value = sharedPreferences.getString(key, "null");  
        return value;  
    }  

    public Boolean getPersistenceBoolean(String name, String key) {  
        SharedPreferences sharedPreferences = context.getSharedPreferences(  
                name, Context.MODE_PRIVATE);  
        Boolean value = sharedPreferences.getBoolean(key, false);  
        return value;  
    }  

    public Integer getPersistenceInteger(String name, String key) {  
        SharedPreferences sharedPreferences = context.getSharedPreferences(  
                name, Context.MODE_PRIVATE);  
        Integer value = sharedPreferences.getInt(key, -1);  
        return value;  
    }  
}  </pre>