Question

我正在尝试在我的应用程序中实施多语言支持。

我的应用包含两个活动，即 MainActivity.class 和 NextActivity.class 。

当用户从 MainActivity.class 中选择任何语言选项时，我会将所选语言保存在sharedpreference中并在下一页中获取sharedpreference语言以更改语言类型。但无法更改语言类型。

任何人都可以帮我解决这个问题吗？谢谢你宝贵的时间！..

strings.xml（values-fr）

<resources>
<string name="app_name">myAPP</string>
<string name="action_settings">Settings</string>
<string name="hello">Bonjour !..</string>
</resources>

strings.xml（values-hi）

<resources>
<string name="app_name">myAPP</string>
<string name="action_settings">Settings</string>
<string name="hello">नमस्ते !..</string>
</resources>

MainActivity.java

public class MainActivity extends AppCompatActivity {

CheckBox chk_english, chk_french, chk_hindi;
Button btn_next;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.setContentView(R.layout.activity_main);

    chk_french = (CheckBox) findViewById(R.id.chk_french);
    chk_hindi = (CheckBox) findViewById(R.id.chk_hindi);
    btn_next = (Button) findViewById(R.id.btn_next);

    chk_french.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton compoundButton, boolean b) {

            if (compoundButton.isChecked()) {
                chk_hindi.setChecked(false);
            }

            saveLanguage("fr");

        }
    });


    chk_hindi.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
        @Override
        public void onCheckedChanged(CompoundButton compoundButton, boolean b) {

            if (compoundButton.isChecked()) {
                chk_french.setChecked(false);
            }
            saveLanguage("hi");
        }
    });


    btn_next.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            startActivity(new Intent(MainActivity.this, NextActivity.class));
        }
    });


}


public void saveLanguage(String type) {

    SharedPreferences.Editor editor = getSharedPreferences("MY_LANGUAGE", MODE_PRIVATE).edit();
    editor.putString("myLanguage", type);
    editor.apply();
    editor.commit();

}}

NextActivity.java

public class NextActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.next_layout);
}

@Override
protected void onResume() {
    super.onResume();

    loadLanguage();

}

public void loadLanguage() {

    SharedPreferences prefs = getSharedPreferences("MY_LANGUAGE", MODE_PRIVATE);
    String myLang = prefs.getString("myLanguage", "");

    if (myLang.equals("fr")) {
        setLanguage("fr");
    } else if (myLang.equals("hi")) {
        setLanguage("hi");
    } else if (myLang.equals("en")) {
        setLanguage("en");
    }

}

void setLanguage(String lang) {

    Locale locale = new Locale(lang);
    Locale.setDefault(locale);
    Configuration config = new Configuration();
    config.locale = locale;
    getBaseContext().getResources().updateConfiguration(config, getBaseContext().getResources().getDisplayMetrics());
    this.setContentView(R.layout.next_layout);

}}

activity_main.xml中

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout            
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="test.org.myapp.MainActivity">


<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:gravity="center"
    android:layout_marginLeft="30dp"
    android:layout_marginRight="30dp">



    <CheckBox
        android:id="@+id/chk_french"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="French"
        android:paddingLeft="10dp"
        android:layout_marginBottom="30dp"/>


    <CheckBox
        android:id="@+id/chk_hindi"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Hindi"
        android:paddingLeft="10dp"
        android:layout_marginBottom="30dp"
        />

    <Button
        android:id="@+id/btn_next"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:text="Next"
        android:background="@color/colorPrimary"
        android:textColor="@android:color/white"
        />


</LinearLayout>

</android.support.design.widget.CoordinatorLayout>

next_layout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
tools:context="test.org.myapp.NextActivity">

<TextView
    android:id="@+id/textView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/hello"
    android:textStyle="bold"
    android:textSize="20dp"/>

</LinearLayout>

Answer 1

首先检查您是否通过输入日志来获取sharedprefrence值，如果是，则将您的代码更改为我的以下代码。

Log.e("LanguageType", prefs.getString("myLanguage", ""));

将您的代码更改为我的以下代码，确保它适合您

public void loadLanguage() {

    SharedPreferences prefs = getSharedPreferences("MY_LANGUAGE", MODE_PRIVATE);
  //  String myLang = prefs.getString("myLanguage", "");

    if (prefs.getString("myLanguage", "").equals("fr")) {
        setLanguage("fr");
    } else if (prefs.getString("myLanguage", "").equals("hi")) {
        setLanguage("hi");
    } else if (prefs.getString("myLanguage", "").equals("en")) {
        setLanguage("en");
    }

}

在android中使用sharedpreference无法使用多语言支持

1 个答案: