更改应用程序的区域设置时，TextView不会更改 [英] TextView not changing when changing Locale of app

问题描述

从onOptionsItemSelected中选择选项时，我试图更改应用程序的locale.

I am trying to change the locale of application when selecting options from the onOptionsItemSelected.

当我尝试这样做时，语言会在同一菜单中成功更改.

When I try to do so, the language gets successfully changed in the same menu.

但是，布局中出现的TextView中的text不变.

However, the text in the TextView present in the layout doesn't change.

感谢您的帮助.

我的MainActivity是:

My MainActivity is:

public class MainActivity extends AppCompatActivity {

    TextView textView;
    Locale myLocale;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        textView = (TextView) findViewById(R.id.textView1);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_english) {
            Toast.makeText(getApplicationContext(),
                    "You have selected English", Toast.LENGTH_SHORT)
                    .show();
            setLocale("en");
            return true;
        } else if (id == R.id.action_nepal) {
            Toast.makeText(getApplicationContext(),
                    "You have selected Nepali", Toast.LENGTH_SHORT)
                    .show();
            setLocale("ne");
            return true;
        }


        return super.onOptionsItemSelected(item);
    }


    public void setLocale(String lang) {

        myLocale = new Locale(lang);
        Resources res = getResources();
        DisplayMetrics dm = res.getDisplayMetrics();
        Configuration conf = res.getConfiguration();
        conf.locale = myLocale;
        res.updateConfiguration(conf, dm);
        getBaseContext().getResources().updateConfiguration(conf,
                getBaseContext().getResources().getDisplayMetrics());
        invalidateOptionsMenu();
        Intent refresh = new Intent(this, MainActivity.class);
        startActivity(refresh);

    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        // refresh your views here
        super.onConfigurationChanged(newConfig);
    }


}

我的清单文件:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.admin.languagesupport">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:configChanges="locale"
        android:theme="@style/AppTheme">
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name"
            android:theme="@style/AppTheme.NoActionBar">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

还有我的两个字符串文件:

And both my strings file :

对于英语:

<resources>
    <string name="app_name">languageChange</string>
    <string name="sample_text">Hello World</string>
    <string name="action_settings">Settings</string>
    <string name="english">English</string>
    <string name="nepal">Nepal</string>
</resources>

对于尼泊尔人:

<resources>
    <string name="app_name">भीमदत्त नगरपालिका</string>
    <string name="action_settings">गृहपृष्ठ</string>
    <string name="sample_text">" विकास क्षेत्रमा पर्ने महाकाली अञ्चल), कञ्चनपुर जिल्लाको स"</string>
    <string name="english">अंग्रेजी</string>
    <string name="nepal">नेपाल</string>
</resources>

推荐答案

有两种不同的方法:

1.没有重新启动活动:

• 在清单中的<activity>中设置android:configChanges="locale"

按如下所示更改您的setLocale:

Change your setLocale as follows:

    private void setLocale(String lang) {
        Locale myLocale = new Locale(lang);
        Resources res = getResources();
        DisplayMetrics dm = res.getDisplayMetrics();
        Configuration conf = res.getConfiguration();
        conf.locale = myLocale;
        res.updateConfiguration(conf, dm);
        getBaseContext().getResources().updateConfiguration(conf, getBaseContext().getResources().getDisplayMetrics());
        invalidateOptionsMenu();
        onConfigurationChanged(conf);//Add this line
    }

覆盖onConfigurationChanged():

    @Override
    public void onConfigurationChanged(final Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        textView.setText(<your-text>);
        //Any other UI text to change
    }

这将确保您的区域设置正确更改.

This will ensure your locale is changed correctly.

2.重新创建活动:

代替

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

致电

recreate();

这将导致使用新实例重新创建此活动.

This will cause this Activity to be recreated with a new instance.

这篇关于更改应用程序的区域设置时，TextView不会更改的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！