如何以编程方式更改语言？

Question

我想以编程方式更改语言.

所以我构建了两个xml文件.

values-it
-->string.xml

values-en
-->string.xml

这是MainActivity中用于更改整个应用程序语言的代码:

//意大利

Resources res = getApplicationContext().getResources();
DisplayMetrics dm = res.getDisplayMetrics();
android.content.res.Configuration conf = res.getConfiguration();
conf.locale = new Locale("it");
res.updateConfiguration(conf, dm);

//英语

Resources res2 = getApplicationContext().getResources();
DisplayMetrics dm2 = res2.getDisplayMetrics();
android.content.res.Configuration conf2 = res2.getConfiguration();
conf2.locale = new Locale("en");
res2.updateConfiguration(conf2, dm2);

现在,如果我设置英语(例如),代码执行时没有错误,但标签不会更改其文本.
如果我更改设备的方向,标签会正确更改其文本.

现在我如何修改我的代码以自动刷新标签？

Answer 1

 AlertDialog.Builder builder = new AlertDialog.Builder(DashboardActivity.this);
            builder.setTitle(R.string.languages);
            // Add the buttons
            builder.setPositiveButton(R.string.english, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                    String languageToLoad = "en"; // your language
                    Locale locale = new Locale(languageToLoad);
                    Locale.setDefault(locale);
                    Configuration config = new Configuration();
                    config.locale = locale;
                    getBaseContext().getResources().updateConfiguration(config,
                            getBaseContext().getResources().getDisplayMetrics());
                    dialog.dismiss();
                    rEditor.putString("language", languageToLoad);
                    rEditor.commit();



                    Intent refresh = new Intent(DashboardActivity.this, DashboardActivity.class);
                    startActivity(refresh);
                    finish();

                }
            });
            builder.setNegativeButton(R.string.gujarati, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                    // User cancelled the dialog

                    String languageToLoad = "gu"; // your language
                    Locale locale = new Locale(languageToLoad);
                    Locale.setDefault(locale);
                    Configuration config = new Configuration();
                    config.locale = locale;
                    getBaseContext().getResources().updateConfiguration(config,
                            getBaseContext().getResources().getDisplayMetrics());
                    dialog.dismiss();
                    rEditor.putString("language", languageToLoad);
                    rEditor.commit();


                    Intent refresh = new Intent(DashboardActivity.this, DashboardActivity.class);
                    startActivity(refresh);
                    finish();

                }
            });

            builder.create().show();

您必须重新加载活动以显示新语言文本意味着重新启动.

Answer 2

您需要刷新您的活动以加载资源，以防更改方向。尝试这个

private void restartActivity() { 
 Intent intent = getIntent(); 
 finish(); 
 startActivity(intent);
}