多语言切换demo

package captain_miao.github.com.multilanguagesswitch; import android.app.FragmentTransaction; import android.content.Context; import android.content.SharedPreferences; import android.os.Bundle; import android.preference.ListPreference; import android.preference.PreferenceFragment; import android.support.v7.app.ActionBar; import android.support.v7.app.AppCompatActivity; import android.text.TextUtils; import android.view.MenuItem; import captain_miao.github.com.multilanguagesswitch.utils.AppLanguageUtils; public class LanguagesActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.act_languages); ActionBar actionBar = getSupportActionBar(); if(actionBar != null) { actionBar.setTitle(R.string.pref_setting_customize); actionBar.setDisplayHomeAsUpEnabled(true); actionBar.setDisplayShowHomeEnabled(true); } if(savedInstanceState == null) { FragmentTransaction fragmentTransaction = getFragmentManager().beginTransaction(); fragmentTransaction.replace(R.id.fragment_container, new LanguagesPreferenceFragment()).commitAllowingStateLoss(); } } @Override protected void attachBaseContext(Context newBase) { super.attachBaseContext(AppLanguageUtils.attachBaseContext(newBase, newBase.getString(R.string.app_language_pref_key))); } @Override public boolean onOptionsItemSelected(MenuItem item) { if (item.getItemId() == android.R.id.home) { finish(); return true; } return super.onOptionsItemSelected(item); } public static class LanguagesPreferenceFragment extends PreferenceFragment { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); addPreferencesFromResource(R.xml.languages_preference); ListPreference preference = (ListPreference) findPreference(getString(R.string.app_language_pref_key)); preference.setSummary(preference.getEntry()); SharedPreferences prefs = getPreferenceManager().getSharedPreferences(); prefs.registerOnSharedPreferenceChangeListener(mPreferenceChangeListener); } @Override public void onDestroy() { super.onDestroy(); getPreferenceManager().getSharedPreferences() .unregisterOnSharedPreferenceChangeListener(mPreferenceChangeListener); } private final SharedPreferences.OnSharedPreferenceChangeListener mPreferenceChangeListener = new SharedPreferences.OnSharedPreferenceChangeListener() { @Override public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) { if (getString(R.string.app_language_pref_key).equals(key)) { ListPreference preference = (ListPreference) findPreference(key); preference.setSummary(preference.getEntry()); CharSequence language = preference.getValue(); if (!TextUtils.isEmpty(language)) { onChangeAppLanguage(language.toString()); } } } }; private void onChangeAppLanguage(String newLanguage) { AppLanguageUtils.changeAppLanguage(getActivity(), newLanguage); AppLanguageUtils.changeAppLanguage(App.getContext(), newLanguage); getActivity().recreate(); } } }