Question

here我可以看到，使用目标C可以处理Singleton中的多语言。我希望它也可以用Java完成。

我想要类似的东西，当用户从微调器中选择语言时，应该将所选语言设置为当前语言。并且使用get方法在所有活动中检索当前语言。有可能吗？如果是，怎么样？

这是我到目前为止所做的事情;

My Singleton Class;

public class SharedMemory {

private String currentLanguage;

private static SharedMemory instance;

private SharedMemory() {

}

public static SharedMemory getInstance() {
    if (instance == null)
        instance = new SharedMemory();
    return instance;

}

public String getCurrentLanguage() {
    return currentLanguage;
}

public void setCurrentLanguage(String currentLanguage) {
    this.currentLanguage = currentLanguage;
}

我的基础活动课程;

public class Base_Activity extends Activity {

private String currentLanguage;

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.main, menu);

    final Spinner spinner = (Spinner) menu.getItem(0).getActionView()
            .findViewById(R.id.spinner);

    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
            this, R.array.languages, R.layout.spinner_row);
    spinner.setAdapter(adapter);

    spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1,
                int arg2, long arg3) {

            currentLanguage = spinner.getSelectedItem().toString();

            Log.i("Seted Language", currentLanguage);
            switch (arg2) {
            case 0:
                // do nothing
                break;

            case 1:
                setLocale("en_US");
                break;

            case 2:
                setLocale("fi");
                break;
            }

        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
            // Locale.setDefault(Locale.ENGLISH);

        }

    });
    return super.onCreateOptionsMenu(menu);
}

public void setLocale(String currentLanguage) {
    Locale myLocale = new Locale(currentLanguage);
    Resources res = getResources();
    DisplayMetrics dm = res.getDisplayMetrics();
    Configuration conf = res.getConfiguration();
    conf.locale = myLocale;
    res.updateConfiguration(conf, dm);
    recreate();
    SharedMemory.getInstance().setCurrentLanguage(currentLanguage);

}
 }

但是在这里，语言已从我不想要的Locale更改。

Answer 1

我使用SharedPreferences执行此操作：

        String firstLocale = getResources().getConfiguration().locale.toString().substring(0, 2);
        String currentLocale  = PreferenceManager.getDefaultSharedPreferences(this).getString("locale", firstLocale);
        Locale locale = new Locale((String) currentLocale);

        Configuration config = new Configuration();


      config.locale = locale;
      Locale.setDefault(locale);

它在我的应用程序中运行良好。

处理Singleton类的多语言

1 个答案: