我创建了广播组，用户可以在其中选择他们想要的语言，并将应用程序语言更改为所选语言，但我无法使用这些功能（不知道如何！）
我做了什么？
- 我做了
settingsActivity
- 我添加了广播组
- 我写过
setAppLocale功能
- 我已经设置了
onRadioButtonClicked更改语言
Code
settingsActivity.java
package com.xxxxxx.xxxxx;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.os.Build;
import android.os.Bundle;
import androidx.appcompat.app.ActionBar;
import androidx.appcompat.app.AppCompatActivity;
import androidx.preference.PreferenceFragmentCompat;
import android.util.DisplayMetrics;
import android.view.View;
import android.widget.RadioButton;
import java.util.Locale;
public class SettingsActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.settings_activity);
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.settings, new SettingsFragment())
.commit();
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.setDisplayHomeAsUpEnabled(true);
}
}
public static class SettingsFragment extends PreferenceFragmentCompat {
@Override
public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
setPreferencesFromResource(R.xml.root_preferences, rootKey);
}
}
//locale settings
public void setAppLocale(String localeCode) {
Resources res = getResources();
DisplayMetrics dm = res.getDisplayMetrics();
Configuration conf = res.getConfiguration();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
conf.setLocale(new Locale(localeCode.toLowerCase()));
} else {
conf.locale = new Locale(localeCode.toLowerCase());
}
res.updateConfiguration(conf, dm);
}
// application language switch
public void onRadioButtonClicked(View view) {
// Is the button now checked?
boolean checked = ((RadioButton) view).isChecked();
// Check which radio button was clicked
switch(view.getId()) {
case R.id.radio_indo:
if (checked)
setAppLocale("id");
break;
case R.id.radio_english:
if (checked)
setAppLocale("en");
break;
}
}
}
settings_activity.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/settings">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginEnd="4sp"
android:layout_marginRight="4sp"
android:weightSum="3"
android:gravity="center"
android:orientation="horizontal">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RadioGroup
android:id="@+id/appLang"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_marginTop="35dp"
android:layout_marginEnd="35dp"
android:layout_marginRight="35dp"
android:layout_marginStart="35dp"
android:layout_marginLeft="35dp"
android:orientation="horizontal">
<TextView
android:id="@+id/applangtext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/applangtextstring" />
<RadioButton
android:id="@+id/radio_indo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="onRadioButtonClicked"
android:text="@string/indoLang" />
<RadioButton
android:id="@+id/radio_english"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="onRadioButtonClicked"
android:text="@string/englishLang" />
</RadioGroup>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
Question
我需要在我的 java 文件中发生两件事：
- 将当前语言广播输入标记为已选择
- 当用户选择另一个单选按钮时进行更改
问题是我如何连接onRadioButtonClicked to
setAppLocale？以及返回当前语言onCreate为了
显示当前选择的语言？
Update
基于下面的答案，这是我的最新更新和我添加的额外文件。但我的语言切换不起作用
settingsActivity.java
import android.content.res.Configuration;
import android.content.res.Resources;
import android.os.Build;
import android.os.Bundle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.preference.PreferenceFragmentCompat;
import android.util.DisplayMetrics;
import android.view.View;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import java.util.Locale;
public class SettingsActivity extends AppCompatActivity {
PrefManager prefManager; //added
RadioButton radio_indo, radio_english; //added
RadioGroup appLang; //added
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.settings_activity);
//added
prefManager = new PrefManager(this);
radio_indo = findViewById(R.id.radio_indo);
radio_english = findViewById(R.id.radio_english);
appLang = findViewById(R.id.appLang);
if (prefManager.getLanguage().equals("en")) {
radio_english.setChecked(true);
} else {
radio_english.setChecked(true);
}
// application language switch (added)
appLang.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int checkId) {
switch (checkId) {
case R.id.radio_indo:
prefManager.setLanguage("id");
// you need to restart or recreate your activity after locale change
break;
case R.id.radio_english:
prefManager.setLanguage("en");
// you need to restart or recreate your activity after locale change
break;
}
}
});
}
public static class SettingsFragment extends PreferenceFragmentCompat {
@Override
public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
setPreferencesFromResource(R.xml.root_preferences, rootKey);
}
}
//locale settings
public void setAppLocale(String localeCode) {
Resources res = getResources();
DisplayMetrics dm = res.getDisplayMetrics();
Configuration conf = res.getConfiguration();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
conf.setLocale(new Locale(localeCode.toLowerCase()));
} else {
conf.locale = new Locale(localeCode.toLowerCase());
}
res.updateConfiguration(conf, dm);
}
// removed my old function as new function added to onCreate
}
PrefManager.java添加了类
import android.content.Context;
import android.content.SharedPreferences;
public class PrefManager {
private SharedPreferences.Editor editor;
private Context mContext;
private SharedPreferences prefs;
private final String LANGUAGE = "language";
private final String PREF = "user_data";
public PrefManager(Context mContext) {
this.mContext = mContext;
}
public String getLanguage() {
this.prefs = this.mContext.getSharedPreferences(PREF, 0);
return this.prefs.getString(LANGUAGE, "en");
}
public void setLanguage(String language) {
this.editor = this.mContext.getSharedPreferences(PREF, 0).edit();
this.editor.putString(LANGUAGE, language);
this.editor.apply();
}
}
BaseActivity.java添加了类
import android.content.Context;
import androidx.appcompat.app.AppCompatActivity;
import java.util.Locale;
/**
* Created by nilesh on 20/3/18.
*/
public class BaseActivity extends AppCompatActivity {
@Override
protected void attachBaseContext(Context newBase) {
Locale newLocale;
String lang = new PrefManager(newBase).getLanguage();
if (lang.equals("en")) {
newLocale = new Locale("en");
} else {
newLocale = new Locale(lang);
}
Context context = ContextWrapper.wrap(newBase, newLocale);
super.attachBaseContext(context);
}
}
settings_activity.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/settings">
<RadioGroup
android:id="@+id/appLang"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="35dp"
android:layout_marginLeft="35dp"
android:layout_marginTop="90dp"
android:layout_marginEnd="35dp"
android:layout_marginRight="35dp"
android:gravity="center"
android:orientation="horizontal">
<TextView
android:id="@+id/applangtext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="@string/applangtextstring" />
<RadioButton
android:id="@+id/radio_indo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/indoLang" />
<RadioButton
android:id="@+id/radio_english"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/englishLang" />
</RadioGroup>
</RelativeLayout>
这就是我关于语言切换的全部内容。
PS-1：根据答案评论中提供的解决方案，我应该添加BaseActivity正如我所有的活动一样，但正如我所有的活动一样
是kotlin not java（除了settingsActivity）我无法
添加它。
PS-2：即使没有得到翻译是因为我无法添加
至少扩展我应该能够在我的
设置活动是java right?
知道为什么这个开关不起作用吗？
