Android之应用内部实现国际化

来源：互联网发布：java 上传大文件编辑：程序博客网时间：2024/05/18 02:49

1和2的方法是一样的，然而还是会调整了手机的语言设置
3对于大型应用来说显得有点儿笨重

针对于这两种程况，我也提供一种方法，即能在不改变手机设置的前提下，又能在大型项目上显得不会太笨重。直接上代码：

工具类：

import android.content.Context;import android.content.SharedPreferences;import android.content.res.Configuration;import android.content.res.Resources;import android.preference.PreferenceManager;import android.util.DisplayMetrics;import java.util.Locale;public class LanguageSettingUtil {    //单例模式-    private static LanguageSettingUtil instance;    private Context context;    //存储当前系统的language设置-    private String defaultLanguage;    //存储当前系统Locale-    private Locale defaultLocale;    public final static String ENGLISH = "en";    public final static String CHINESE = "zh";    private LanguageSettingUtil(Context paramContext) {        //得到系统语言-        Locale localLocale = Locale.getDefault();        this.defaultLocale = localLocale;        //保存系统语言到defaultLanguage        String str = this.defaultLocale.getLanguage();        this.defaultLanguage = str;        this.context = paramContext;    }    //检验自身是否被创建-    public static LanguageSettingUtil get() {        if (instance == null)            throw new IllegalStateException(                    "language setting not initialized yet");        return instance;    }    //初始化-    public static void init(Context paramContext) {        if (instance == null) {            instance = new LanguageSettingUtil(paramContext);        }    }    // 创建Configuration-    private Configuration getUpdatedLocaleConfig(String paramString) {        Configuration localConfiguration = context.getResources()                .getConfiguration();        Locale localLocale = getLocale(paramString);        localConfiguration.locale = localLocale;        return localConfiguration;    }    //得到APP配置文件目前的语言设置-    public String getLanguage() {        SharedPreferences localSharedPreferences = PreferenceManager                .getDefaultSharedPreferences(this.context);        //如果当前程序没有设置language属性就返回系统语言，如果有，就返回以前的-        return localSharedPreferences.getString("language",                this.defaultLanguage);    }    //如果配置文件中没有语言设置-    public Locale getLocale() {        String str = getLanguage();        return getLocale(str);    }    //创建新Locale并覆盖原Locale-    public Locale getLocale(String paramString) {        Locale localLocale = new Locale(paramString);        Locale.setDefault(localLocale);        return localLocale;    }    //刷新显示配置-    public void refreshLanguage() {        String str = getLanguage();        Resources localResources = this.context.getResources();        if (!localResources.getConfiguration().locale.getLanguage().equals(str)) {            Configuration localConfiguration = getUpdatedLocaleConfig(str);            // A structure describing general information about a display, such            // as its size, density, and font scaling.            DisplayMetrics localDisplayMetrics = localResources                    .getDisplayMetrics();            localResources.updateConfiguration(localConfiguration,                    localDisplayMetrics);        }    }    //设置系统语言-    public void saveLanguage(String paramString) {        PreferenceManager.getDefaultSharedPreferences(this.context).edit()                .putString("language", paramString).commit();    }    //保存系统的语言设置到SharedPreferences-    public void saveSystemLanguage() {        PreferenceManager.getDefaultSharedPreferences(this.context).edit()                .putString("PreSysLanguage", this.defaultLanguage).commit();    }    public void checkSysChanged(String cuerSysLanguage) {        //如果系统语言设置发生变化-        if (!cuerSysLanguage.equals(PreferenceManager                .getDefaultSharedPreferences(this.context).getString(                        "PreSysLanguage", "zh"))) {            //如果系统保存了this对象，就在这里修改defaultLanguage的值为当前系统语言cuerSysLanguage            this.defaultLanguage = cuerSysLanguage;            saveLanguage(cuerSysLanguage);            saveSystemLanguage();        }    }}

调用类：

import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.TextView;import com.example.internationaltest.util.LanguageSettingUtil;public class MainActivity extends Activity {    private LanguageSettingUtil languageSetting;    private TextView h,w;    private Button b;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                h = (TextView) findViewById(R.id.h);        w = (TextView) findViewById(R.id.w);        b = (Button) findViewById(R.id.b);                LanguageSettingUtil.init(this);　　// 初始化        languageSetting = LanguageSettingUtil.get();　　// 检查是否已经初始化    }    public void change(View view){        languageSetting.saveLanguage("en");　　// 设置为"en"语言        LanguageSettingUtil.get().refreshLanguage();　　// 刷新        h.setText(R.string.hello);        w.setText(R.string.world);        b.setText(R.string.change);    }}

0 0