由于受欢迎的请求，我正在尝试为我的应用添加语言转换器。我添加了一个列表对话框，然后通过它更改了语言环境，如下面的代码示例所示。但每当用户关闭并重新打开应用程序或更改方向时，它都会恢复为系统语言。我已阅读有关共享首选项的信息，但我无法理解如何使用它们进行设置？我该怎么办呢？以下是我的相关代码
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);
Intent refresh = new Intent(this, MainActivity.class);
startActivity(refresh);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public boolean onOptionsItemSelected(MenuItem item) {
if (android.R.id.home == item.getItemId()) {
finish();
return super.onOptionsItemSelected(item);
}
switch (item.getItemId()) {
case R.id.action_upgrade:
Intent launchNewIntent = new Intent(
"android.intent.action.VIEW",
Uri.parse("https://play.google.com/store/apps/details?id=com.nath.thecompletembguidepro"));
startActivity(launchNewIntent);
return true;
case R.id.action_language:
final CharSequence[] items = { "English", "German", "Spanish",
"Potuguese" };
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Change MB Guide Language");
builder.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int pos) {
if (pos == 0) {
setLocale("en");
} else if (pos == 1) {
setLocale("de");
} else if (pos == 2) {
setLocale("es");
} else if (pos == 3) {
setLocale("pt");
}
}
});
AlertDialog alert = builder.create();
alert.show();
return true;
这是完整的活动代码
public class MainActivity extends ActionBarActivity {
protected boolean small;
Locale myLocale;
@Override
protected void onStart() {
super.onStart();
RateThisApp.onStart(this);
RateThisApp.showRateDialogIfNeeded(this);
YoYo.with(Techniques.SlideInDown).duration(700)
.playOn(findViewById(android.R.id.list));
YoYo.with(Techniques.SlideInDown).duration(1200)
.playOn(findViewById(R.id.fabbutton));
}
private FeedbackDialog feedBack;
@SuppressLint("NewApi")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
StartAppSDK.init(this, "105864370", "207677226", new SDKAdPreferences()
.setAge(10).setGender(Gender.MALE), false);
LayoutInflater i = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);
final View v = i.inflate(R.layout.mainactivityfavlayout, null);
final LinearLayout root = new LinearLayout(this);
root.addView(v);
setContentView(root);
getSupportActionBar().setIcon(R.drawable.newbook);
small = false;
final Fab mFab = (Fab) v.findViewById(R.id.fabbutton);
mFab.setFabDrawable(getResources().getDrawable(
R.drawable.ic_action_thumbs_up_down));
mFab.setFabColor(Color.parseColor("#795548"));
mFab.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
if (!small) {
small = true;
feedBack.show();
} else {
small = false;
feedBack.show();
}
}
});
boolean installed = appInstalledOrNot("com.br4mmie.minebuilder");
if (installed) {
System.out.println("App already installed on your phone");
} else {
System.out.println("App is not installed on your phone");
AlertDialog.Builder builder = new AlertDialog.Builder(
MainActivity.this);
builder.setTitle(getString(R.string.info));
builder.setMessage(getString(R.string.mbnotfounderror));
builder.setPositiveButton(R.string.download,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent launchNewIntent5 = new Intent(
"android.intent.action.VIEW",
Uri.parse("https://play.google.com/store/apps/details?id=com.br4mmie.minebuilder"));
startActivity(launchNewIntent5);
}
});
builder.setNegativeButton(getString(R.string.ignore),
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
AlertDialog alertdialog = builder.create();
alertdialog.show();
}
final CardListView list = (CardListView) findViewById(android.R.id.list);
CardAdapter<Card> adapter = new CardAdapter<Card>(this,
android.R.color.black);
list.setAdapter(adapter);
adapter.add(new CardHeader(getString(R.string.hello)));
adapter.add(new Card((getString(R.string.recipes)),
((getString(R.string.recipesbio)))).setThumbnail(getResources()
.getDrawable(R.drawable.bookicon)));
adapter.add(new Card((getString(R.string.id)),
((getString(R.string.idbio)))).setThumbnail(getResources()
.getDrawable(R.drawable.idicon)));
adapter.add(new Card((getString(R.string.mobs)),
((getString(R.string.mobsbio)))).setThumbnail(getResources()
.getDrawable(R.drawable.mobsicon)));
adapter.add(new Card((getString(R.string.biomesactitle)),
((getString(R.string.biomesbio)))).setThumbnail(getResources()
.getDrawable(R.drawable.biomesicon)));
adapter.add(new Card((getString(R.string.title_activity_ad)),
((getString(R.string.adbio)))).setThumbnail(getResources()
.getDrawable(R.drawable.miscicon)));
list.setOnCardClickListener(new CardClickListener() {
@Override
public void onCardClick(int index,
@SuppressWarnings("rawtypes") CardBase card, View view) {
Log.i("MBGuide", "Clicked a Button on homepage");
if (index == 1)
startActivity(new Intent(MainActivity.this,
RecipeChooserActivity.class));
if (index == 2)
startActivity(new Intent(MainActivity.this,
IDActivity.class));
if (index == 3)
startActivity(new Intent(MainActivity.this,
NewMobsActivity.class));
if (index == 4)
startActivity(new Intent(MainActivity.this,
DimensionChooserActivity.class));
if (index == 5)
startActivity(new Intent(MainActivity.this,
AdActivity.class));
}
});
getSupportActionBar().setIcon(R.drawable.newbook);
android.support.v7.app.ActionBar actionBar = getSupportActionBar();
actionBar.setBackgroundDrawable(new ColorDrawable(Color
.parseColor("#795548")));
SystemBarTintManager tintManager = new SystemBarTintManager(this);
tintManager.setStatusBarTintEnabled(true);
tintManager.setTintColor(Color.parseColor("#5D4037"));
FeedbackSettings feedbackSettings = new FeedbackSettings();
feedbackSettings.setText(getString(R.string.feedbackinfo));
feedbackSettings.setTitle(getString(R.string.feedbacktitle));
feedbackSettings.setReplyTitle(getString(R.string.feedbacknewmessage));
feedbackSettings
.setReplyCloseButtonText(getString(R.string.feedbackclose));
feedbackSettings
.setReplyRateButtonText(getString(R.string.feedbackrate));
feedbackSettings.setBugLabel(getString(R.string.feedbackbug));
feedbackSettings.setIdeaLabel(getString(R.string.feedbackidea));
feedbackSettings.setQuestionLabel(getString(R.string.feedbackquestion));
feedBack = new FeedbackDialog(this, "AF-E0C9EDA7599B-26",
feedbackSettings);
}
@Override
protected void onPause() {
super.onPause();
feedBack.dismiss();
}
@Override
protected void onResume() {
super.onResume();
YoYo.with(Techniques.SlideInDown).duration(700)
.playOn(findViewById(android.R.id.list));
}
private boolean appInstalledOrNot(String uri) {
PackageManager pm = getPackageManager();
boolean app_installed = false;
try {
pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
app_installed = true;
} catch (PackageManager.NameNotFoundException e) {
app_installed = false;
}
return app_installed;
}
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);
Intent refresh = new Intent(this, MainActivity.class);
startActivity(refresh);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
public boolean onOptionsItemSelected(MenuItem item) {
if (android.R.id.home == item.getItemId()) {
finish();
return super.onOptionsItemSelected(item);
}
switch (item.getItemId()) {
case R.id.action_upgrade:
Intent launchNewIntent = new Intent(
"android.intent.action.VIEW",
Uri.parse("https://play.google.com/store/apps/details?id=com.nath.thecompletembguidepro"));
startActivity(launchNewIntent);
return true;
case R.id.action_language:
final CharSequence[] items = { "English", "German", "Spanish",
"Potuguese" };
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Change MB Guide Language");
builder.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int pos) {
if (pos == 0) {
setLocale("en");
} else if (pos == 1) {
setLocale("de");
} else if (pos == 2) {
setLocale("es");
} else if (pos == 3) {
setLocale("pt");
}
}
});
AlertDialog alert = builder.create();
alert.show();
return true;
case R.id.action_dlmb:
Intent launchNewIntent13 = new Intent(
"android.intent.action.VIEW",
Uri.parse("https://play.google.com/store/apps/details?id=com.br4mmie.minebuilder"));
startActivity(launchNewIntent13);
return true;
case R.id.action_about:
Intent launchNewIntent3 = new Intent(MainActivity.this,
AboutActivity.class);
startActivity(launchNewIntent3);
return true;
case R.id.action_credits:
Intent launchNewIntent1 = new Intent(MainActivity.this,
SixthActivity.class);
startActivityForResult(launchNewIntent1, 0);
return true;
case R.id.action_feedback:
Intent launchNewIntent11 = new Intent(
"android.intent.action.VIEW",
Uri.parse("https://www.youtube.com/watch?v=mTrNFlR8Mh4&feature=youtu.be"));
startActivity(launchNewIntent11);
return true;
case R.id.action_videohub:
AlertDialog.Builder builder1 = new AlertDialog.Builder(
MainActivity.this);
builder1.setTitle(getString(R.string.mbvhtitle));
builder1.setMessage(getString(R.string.mbvhdescription));
builder1.setPositiveButton(getString(R.string.download),
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
Intent launchNewIntent5 = new Intent(
"android.intent.action.VIEW",
Uri.parse("https://play.google.com/store/apps/details?id=com.nath.mbvideohub"));
startActivity(launchNewIntent5);
Toast.makeText(MainActivity.this,
"Requires Network Connection",
Toast.LENGTH_SHORT).show();
}
});
builder1.setNegativeButton(getString(R.string.cancel),
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
AlertDialog alertdialog = builder1.create();
alertdialog.show();
}
return false;
}
{
;
}
}
答案 0 :(得分：0)
我会使用偏好屏幕制作设置菜单。然后用户可以随心所欲地改变他的语言。
Settings menu with Preferencescreen
实施例
SharedPreferences settings = getActivity().getSharedPreferences(
PREFS_NAME, MODE_PRIVATE);
// EditorObject to store values!
SharedPreferences.Editor editor = settings.edit();
editor.putString("Name", mEtxtName.getText().toString());
editor.putString("Email", mEtxtEmail.getText().toString());
editor.commit();
// GET VALUES IN FRAGMENT FROM PREFERENCES.
SharedPreferences settings = getActivity().getSharedPreferences(
PREFS_NAME, Context.MODE_PRIVATE);
mTxtShowEmail.setText(settings.getString("Email", "Default@email.com"));
mTxtShowName.setText(settings.getString("Name", "Defaultname"));