我正在编写自己的类来管理Android / iOS应用程序的翻译,并且我已经生成了这段代码。我将在下面解释代码,但它非常简单和短小。
上面的代码用法如下:
unit Localization;
interface
uses
System.Classes, System.SysUtils, Generics.Collections, Vcl.Dialogs;
//this class represents a single language (Italian, French, German...)
type
TLanguage = class
private
FTranslationList: TDictionary<string, string>;
function localize(const aWordId: string): string;
public
constructor Create;
destructor Destroy; override;
//methods
procedure addWord(const aIndex, aWord: string);
procedure removeWord(const aIndex: string);
end;
//this is a "container", it gathers all the languages in one place
type
TLocalization = class
private
FLanguagesList: TObjectList<TLanguage>;
FLocaleList: TStringList;
function getLang(Index: string): TLanguage;
public
constructor Create;
destructor Destroy; override;
//methods
function localize(const aLocaleId: string; const aIndex: string): string;
procedure addLanguage(const localeId: string);
//property to manage the languages
property Locale[Index: string]: TLanguage read getLang;
property langCount: integer read getCount;
end;
implementation
{ TLocalization }
{ add a new language to the class. }
{the localeId is a symbol like 'it' that represents the Italian language}
procedure TLocalization.addLanguage(const localeId: string);
begin
//add the language to the languages container
FLanguagesList.Add(TLanguage.Create);
//add the representation of the language.
FLocaleList.Add(localeId);
end;
constructor TLocalization.Create;
begin
FLanguagesList := TObjectList<TLanguage>.Create;
FLocaleList := TStringList.Create;
end;
destructor TLocalization.Destroy;
begin
FLanguagesList.Free;
FLocaleList.Free;
inherited;
end;
//ERROR HERE
function TLocalization.getLang(Index: string): TLanguage;
var i: integer;
begin
{ I search the locale id (for example 'it') if it's in the list. }
{ if it's in the list, I return the respective TLanguage object}
if not( FLocaleList.Find(Index, i) ) then
Result := FLanguagesList.Items[i]
else
raise Exception.Create('Locale not found');
end;
function TLocalization.localize(const aLocaleId, aIndex: string): string;
var k: integer;
begin
k := 0;
if not( FLocaleList.Find(aLocaleId, k) ) then
raise Exception.Create('Locale not found.');
//ho trovato il locale, adesso basta cercare la parola
Result := FLanguagesList.Items[k].localize(aIndex);
end;
{ TLanguage }
procedure TLanguage.addWord(const aIndex, aWord: string);
begin
FTranslationList.Add(aIndex, aWord);
end;
constructor TLanguage.Create;
begin
FTranslationList := TDictionary<string, string>.Create;
end;
destructor TLanguage.Destroy;
begin
FTranslationList.Free;
inherited;
end;
function TLanguage.localize(const aWordId: string): string;
begin
try
Result := FTranslationList.Items[aWordId];
except
Result := 'Not found.';
end;
end;
procedure TLanguage.removeWord(const aIndex: string);
begin
FTranslationList.Remove(aIndex);
end;
end.
上面的代码用法如下:
var a: TLocalization;
begin
a := TLocalization.Create;
a.addLanguage('it');
a.addLanguage('cse');
a.Locale['it'].addWord('test', 'Ciao mondo!');
a.Locale['cse'].addWord('test', 'fadfa ea!');
ButtonSomething.Text := a.localize('it', test);
end;
< p > TLocalization
类负责所有工作。如您所见,我创建变量 a
,然后将语言添加到该类中(这是使用字典/字符串列表在内部管理的)。
可以使用 Locale[Index: string]
属性访问已添加的语言,该属性返回一个 TLanguage
,我使用它来表示单个语言。最后通过 localize 方法获得我的翻译。
奇怪的是,我总是收到错误信息'Locale not found'
。有任何想法吗?使用调试器,我发现了这个:
FLocaleList
有项目,但我已经测试过了,我猜我在第71行(我使用Find函数的地方)做错了什么。也许我传递的索引是错误的吗?
en
、it
等,而locale是语言的一个特定子类(用于世界上的特定地区),例如对于英语,它可以是英式英语(en-gb
)、美式英语(en-us
)等。因此,在翻译文本时,首先检查是否存在特定方言(locale),如果没有,则使用该语言的通用方言。 - Victoria