android多語言支援（Locale與Configuration）

建立一個繼承Activity類的MultiLanguageActivity，并設定布局檔案為：multilanguage.xml。

首先添加一個TextView和一個Spinner，TextView用于顯示一個字元串--“你好”，Spinner用于在程式中動态選擇語言。

<TextView         android:id="@+id/multilanguage_tv01"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_gravity="center_horizontal"         android:text="@string/hello"         android:textSize="24sp" />     <Spinner         android:id="@+id/multilanguage_spinner01"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:entries="@array/multilanguage_item"         android:prompt="@string/multilanguage_spinner_prompt"         android:spinnerMode="dialog" />

頁面效果：

此外還需要定義3個支援國際語言的strings.xml(預設的，values-en,values-ja)

values-en/strings.xml

<?xml version="1.0" encoding="utf-8"?> <resources>     <string name="hello">こんにちは</string>       <string name="multilanguage_spinner_prompt">言葉を選択し</string>    <string-array name="multilanguage_item">         <item>中文</item>         <item>English</item>         <item>日文</item>     </string-array> </resources>

values-ja/strings.xml

<?xml version="1.0" encoding="utf-8"?> <resources>     <string name="hello">Hello</string>     <string name="multilanguage_spinner_prompt">Select the language</string>     <string-array name="multilanguage_item">         <item>中文</item>         <item>English</item>         <item>日文</item>     </string-array> </resources>

運作效果：

最後在Activity程式中先得到預設的Spinner執行個體，然後設定Spinner的setOnItemSelectedListener()，而後覆寫裡面的2個方法。

package lyx.feng.simpletextdemo; ...... public class MultiLanguageActivity extends Activity {     private Spinner spinner = null;     private String item[];     @Override     protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        super.setContentView(R.layout.multilanguage);        this.spinner = (Spinner) super               .findViewById(R.id.multilanguage_spinner01);        this.item = getResources().getStringArray(R.array.multilanguage_item);        this.spinner.setOnItemSelectedListener(new OnItemSelectedListener() {            @Override            public void onItemSelected(AdapterView<?> parent, View view,                   int position, long id) {               Toast.makeText(MultiLanguageActivity.this, item[position],                      Toast.LENGTH_SHORT).show();            }            @Override            public void onNothingSelected(AdapterView<?> parent) {            }        });     } }

效果

最後動态設定預設的語言環境。

@Override            public void onItemSelected(AdapterView<?> parent, View view,                   int position, long id) {               Toast.makeText(MultiLanguageActivity.this, item[position],                      Toast.LENGTH_SHORT).show();               Resources res = getResources();               Configuration conf = res.getConfiguration();               switch (position) {               case 0:                   conf.locale = Locale.CHINA;                   break;               case 1:                   conf.locale = Locale.ENGLISH;                   break;               case 2:                   conf.locale = Locale.JAPAN;                   break;               }               DisplayMetrics metrics = res.getDisplayMetrics();               res.updateConfiguration(conf, metrics);                tv.setText(getString(R.string.hello));            }            @Override            public void onNothingSelected(AdapterView<?> parent) {            }

運作效果：