我的应用程序在“设置活动”中有一个部分，用户可以使用共享首选项设置字体。我的MainActivity中有4个viewPage。但是只有3个运作良好。
当用户更改字体时，所有页面都能正常工作。但是，当我重新启动应用程序时，“笔记”标签的文本类型不会改变。但是，如果我单击一个便笺并再次打开列表，则文本类型正在更改用户想要的内容或从“设置活动”中选择的内容。
这是我的SettingActivity：
public class SettingActivity extends AppCompatActivity {
MaterialSpinner selectFontSize, selectFontType;
FButton saveChanges;
TextView fontType, fontSize, text_warning;
SharedPreferences sharedPreferences;
Context context = this;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_setting);
init();
sharedPreferences = getApplicationContext().getSharedPreferences(getString(R.string.pref_font_type), MODE_PRIVATE);
sharedPreferences = getApplicationContext().getSharedPreferences(getString(R.string.pref_font_size), MODE_PRIVATE);
settingMenu();
setDefaultTextType();
setDefaultTextSize();
changeFontType();
changeFontSize();
}
private String[] sizeList() {
return new String[]{getString(R.string.yaziFontAyari),
"12", "15", "18", "21", "24", "27", "30", "33", "36", "39"};
}
private void changeFontSize() {
selectFontSize.setOnItemSelectedListener(new MaterialSpinner.OnItemSelectedListener() {
@Override
public void onItemSelected(MaterialSpinner view, int position, long id, Object item) {
float textSize = 12;
String message = "Karakter boyutu: ";
if (item.equals("12")) {
textSize = 12;
fontType.setTextSize(textSize);
fontSize.setTextSize(textSize);
text_warning.setTextSize(textSize);
Toast.makeText(context, message + String.valueOf(textSize), Toast.LENGTH_SHORT).show();
} else if (item.equals("15")) {
textSize = 15;
fontType.setTextSize(textSize);
fontSize.setTextSize(textSize);
text_warning.setTextSize(textSize);
Toast.makeText(context, message + String.valueOf(textSize), Toast.LENGTH_SHORT).show();
} else if (item.equals("18")) {
textSize = 18;
fontType.setTextSize(textSize);
fontSize.setTextSize(textSize);
text_warning.setTextSize(textSize);
Toast.makeText(context, message + String.valueOf(textSize), Toast.LENGTH_SHORT).show();
} else if (item.equals("21")) {
textSize = 21;
fontType.setTextSize(textSize);
fontSize.setTextSize(textSize);
text_warning.setTextSize(textSize);
Toast.makeText(context, message + String.valueOf(textSize), Toast.LENGTH_SHORT).show();
} else if (item.equals("24")) {
textSize = 24;
fontType.setTextSize(textSize);
fontSize.setTextSize(textSize);
text_warning.setTextSize(textSize);
Toast.makeText(context, message + String.valueOf(textSize), Toast.LENGTH_SHORT).show();
} else if (item.equals("27")) {
textSize = 27;
fontType.setTextSize(textSize);
fontSize.setTextSize(textSize);
text_warning.setTextSize(textSize);
Toast.makeText(context, message + String.valueOf(textSize), Toast.LENGTH_SHORT).show();
} else if (item.equals("30")) {
textSize = 30;
fontType.setTextSize(textSize);
fontSize.setTextSize(textSize);
text_warning.setTextSize(textSize);
Toast.makeText(context, message + String.valueOf(textSize), Toast.LENGTH_SHORT).show();
} else if (item.equals("33")) {
textSize = 33;
fontType.setTextSize(textSize);
fontSize.setTextSize(textSize);
text_warning.setTextSize(textSize);
Toast.makeText(context, message + String.valueOf(textSize), Toast.LENGTH_SHORT).show();
} else if (item.equals("36")) {
textSize = 36;
fontType.setTextSize(textSize);
fontSize.setTextSize(textSize);
text_warning.setTextSize(textSize);
Toast.makeText(context, message + String.valueOf(textSize), Toast.LENGTH_SHORT).show();
} else if (item.equals("39")) {
textSize = 39;
fontType.setTextSize(textSize);
fontSize.setTextSize(textSize);
text_warning.setTextSize(textSize);
Toast.makeText(context, message + String.valueOf(textSize), Toast.LENGTH_SHORT).show();
}
if (id >= 0) {
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putFloat(getString(R.string.description_fontSize), textSize);
editor.commit();
}
}
});
}
private void changeFontType() {
selectFontType.setOnItemSelectedListener(new MaterialSpinner.OnItemSelectedListener() {
@Override
public void onItemSelected(MaterialSpinner view, int position, long id, Object item) {
String message = "Seçilen Yazı Tipi: ";
String selected_fontType = "fonts/montserrat.ttf";
if (item.equals(getString(R.string.ABeeZee))) {
Toast.makeText(context, message + getString(R.string.ABeeZee), Toast.LENGTH_SHORT).show();
Calligrapher calligrapher = new Calligrapher(context);
selected_fontType = "fonts/abeezee.ttf";
calligrapher.setFont(SettingActivity.this, selected_fontType, true);
} else if (item.equals(getString(R.string.Armata))) {
Toast.makeText(context, message + getString(R.string.Armata), Toast.LENGTH_SHORT).show();
Calligrapher calligrapher = new Calligrapher(context);
selected_fontType = "fonts/armata.ttf";
calligrapher.setFont(SettingActivity.this, selected_fontType, true);
} else if (item.equals(getString(R.string.Duru_Sans))) {
Toast.makeText(context, message + getString(R.string.Duru_Sans), Toast.LENGTH_SHORT).show();
Calligrapher calligrapher = new Calligrapher(context);
selected_fontType = "fonts/duruSans.ttf";
calligrapher.setFont(SettingActivity.this, selected_fontType, true);
} else if (item.equals(getString(R.string.Habibi))) {
Toast.makeText(context, message + getString(R.string.Habibi), Toast.LENGTH_SHORT).show();
Calligrapher calligrapher = new Calligrapher(context);
selected_fontType = "fonts/habibi.ttf";
calligrapher.setFont(SettingActivity.this, selected_fontType, true);
} else if (item.equals(getString(R.string.Happy_Monkey))) {
Toast.makeText(context, message + getString(R.string.Happy_Monkey), Toast.LENGTH_SHORT).show();
Calligrapher calligrapher = new Calligrapher(context);
selected_fontType = "fonts/happyMonkey.ttf";
calligrapher.setFont(SettingActivity.this, selected_fontType, true);
} else if (item.equals(getString(R.string.Kite_One))) {
Toast.makeText(context, message + getString(R.string.Kite_One), Toast.LENGTH_SHORT).show();
Calligrapher calligrapher = new Calligrapher(context);
selected_fontType = "fonts/kitOne.ttf";
calligrapher.setFont(SettingActivity.this, selected_fontType, true);
} else if (item.equals(getString(R.string.Maven_Pro))) {
Toast.makeText(context, message + getString(R.string.Maven_Pro), Toast.LENGTH_SHORT).show();
Calligrapher calligrapher = new Calligrapher(context);
selected_fontType = "fonts/mavenPro.ttf";
calligrapher.setFont(SettingActivity.this, selected_fontType, true);
} else if (item.equals(getString(R.string.Montserrat_Alternates))) {
Toast.makeText(context, message + getString(R.string.Montserrat_Alternates), Toast.LENGTH_SHORT).show();
Calligrapher calligrapher = new Calligrapher(context);
selected_fontType = "fonts/montserrat.ttf";
calligrapher.setFont(SettingActivity.this, selected_fontType, true);
} else if (item.equals(getString(R.string.Offside))) {
Toast.makeText(context, message + getString(R.string.Offside), Toast.LENGTH_SHORT).show();
Calligrapher calligrapher = new Calligrapher(context);
selected_fontType = "fonts/offside.otf";
calligrapher.setFont(SettingActivity.this, selected_fontType, true);
}
if (id >= 0) {
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString(getString(R.string.description_fontType), selected_fontType);
editor.commit();
}
}
});
}
private void settingMenu() {
selectFontType.setItems(typeList());
selectFontSize.setItems(sizeList());
}
private String[] typeList() {
return new String[]{getString(R.string.yaziTipiSeciniz),
getString(R.string.ABeeZee),
getString(R.string.Armata),
getString(R.string.Duru_Sans),
getString(R.string.Habibi),
getString(R.string.Happy_Monkey),
getString(R.string.Kite_One),
getString(R.string.Maven_Pro),
getString(R.string.Offside),
getString(R.string.Montserrat_Alternates)};
}
private void setDefaultTextType() {
String default_fontType = "fonts/montserrat.ttf";
String savedFontType = sharedPreferences.getString(getResources().getString(R.string.pref_font_type), default_fontType);
new Calligrapher(this).setFont(this, savedFontType, true);
}
private void setDefaultTextSize() {
float savedFontSize = sharedPreferences.getFloat(getString(R.string.pref_font_size), 15);
fontSize.setTextSize(savedFontSize);
}
private void init() {
selectFontSize = findViewById(R.id.select_font_size);
selectFontType = findViewById(R.id.select_font_type);
fontSize = findViewById(R.id.font_size);
fontType = findViewById(R.id.font_type);
saveChanges = findViewById(R.id.saveChanges);
text_warning = findViewById(R.id.text_warning);
}
@Override
public void onBackPressed() {
Toast.makeText(context, "Ayarları kaydetmeniz gerekmektedir!", Toast.LENGTH_SHORT).show();
}
public void saveChanges(View view) {
Intent goDetailPage = new Intent(this, MainActivity.class);
startActivity(goDetailPage);
finish();
}
}
这是我的适配器：
public class NotlarimAdapter extends RecyclerView.Adapter<NotlarimViewHolder> {
private static final int TYPE_HEADER = 0;
private static final int TYPE_CELL = 1;
private ItemClickListener itemClickListener;
private Context context;
private ArrayList<Notes> myNotes;
private LayoutInflater mInflater;
private Database db;
SharedPreferences sharedPreferences;
public NotlarimAdapter(Context context) {
this.context = context;
mInflater = LayoutInflater.from(context);
sharedPreferences = context.getApplicationContext().getSharedPreferences(context.getString(R.string.pref_font_type), MODE_PRIVATE);
sharedPreferences = context.getApplicationContext().getSharedPreferences(context.getString(R.string.pref_font_size), MODE_PRIVATE);
refresh();
}
public void refresh() {
myNotes = new ArrayList<>();
db = new Database(this.context);
db.open();
myNotes = db.getAllNotes();
db.close();
}
@Override
public int getItemViewType(int position) {
switch (position) {
case 0:
return TYPE_HEADER;
default:
return TYPE_CELL;
}
}
@Override
public int getItemCount() {
return myNotes.size();
}
@Override
public NotlarimViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = null;
switch (viewType) {
case TYPE_HEADER: {
view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.row_notlarim_big, parent, false);
return new NotlarimViewHolder(view, itemClickListener) {
};
}
case TYPE_CELL: {
view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.row_notlarim_small, parent, false);
return new NotlarimViewHolder(view, itemClickListener) {
};
}
}
return null;
}
@Override
public void onBindViewHolder(final NotlarimViewHolder holder, final int position) {
final Notes mNotes = myNotes.get(position);
switch (getItemViewType(position)) {
case TYPE_HEADER:
holder.big_row_title_notlarim.setText(mNotes.getTitle());
holder.big_row_description_notlarim.setText(mNotes.getDescription());
String currentDateAndTime = DateFormat.getDateTimeInstance().format(new Date());
holder.big_row_date_notlarim.setText(currentDateAndTime);
rowTypeFace(holder.big_row_title_notlarim, holder.big_row_description_notlarim, holder.big_row_date_notlarim);
holder.setItemClickListener(new ItemClickListener() {
@Override
public void onClick(View v, int position, boolean isLongClick) {
Toast.makeText(context, mNotes.getTitle(), Toast.LENGTH_SHORT).show();
Intent noteDetail = new Intent(context, NoteDetailPage.class);
noteDetail.putExtra(Common.NOTE_ID, mNotes.getId());
noteDetail.putExtra(Common.NOTE_TITLE, mNotes.getTitle());
noteDetail.putExtra(Common.NOTE_DESCRIPTION, mNotes.getDescription());
context.startActivity(noteDetail);
}
});
holder.deleteNote_big.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showDeleteDialog(position);
}
});
holder.shareNote_big.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
shareNote(position);
}
});
holder.editNote_big.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
db = new Database(context);
db.open();
final Dialog dialog = new Dialog(context);
dialog.show();
dialog.setContentView(R.layout.update_dialog);
FButton updateNewNote = dialog.findViewById(R.id.possitiveButton);
FButton cancel = dialog.findViewById(R.id.negativeButton);
final MaterialEditText newNote = dialog.findViewById(R.id.update_note_edit_text);
newNote.setText(holder.big_row_description_notlarim.getText());
updateNewNote.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
holder.big_row_description_notlarim.setText(newNote.getText());
mNotes.setDescription(newNote.getText().toString());
db.updateNote(mNotes.getId(),
mNotes.getTitle(),
newNote.getText().toString());
db.close();
}
});
cancel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
}
});
break;
case TYPE_CELL:
holder.small_row_title_notlarim.setText(mNotes.getTitle());
holder.small_row_description_notlarim.setText(mNotes.getDescription());
String currentDateAndTimeSmall = DateFormat.getDateTimeInstance().format(new Date());
holder.small_row_date_notlarim.setText(currentDateAndTimeSmall);
rowTypeFace(holder.small_row_title_notlarim, holder.small_row_description_notlarim, holder.small_row_date_notlarim);
holder.setItemClickListener(new ItemClickListener() {
@Override
public void onClick(View v, int position, boolean isLongClick) {
Toast.makeText(context, mNotes.getTitle(), Toast.LENGTH_SHORT).show();
Intent noteDetail = new Intent(context, NoteDetailPage.class);
noteDetail.putExtra(Common.NOTE_ID, mNotes.getId());
noteDetail.putExtra(Common.NOTE_TITLE, mNotes.getTitle());
noteDetail.putExtra(Common.NOTE_DESCRIPTION, mNotes.getDescription());
context.startActivity(noteDetail);
}
});
holder.deleteNote_small.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showDeleteDialog(position);
}
});
holder.shareNote_small.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
shareNote(position);
}
});
holder.editNote_small.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
db = new Database(context);
db.open();
final Dialog dialog = new Dialog(context);
dialog.show();
dialog.setContentView(R.layout.update_dialog);
FButton updateNewNote = dialog.findViewById(R.id.possitiveButton);
FButton cancel = dialog.findViewById(R.id.negativeButton);
final MaterialEditText newNote = dialog.findViewById(R.id.update_note_edit_text);
newNote.setText(holder.small_row_description_notlarim.getText());
updateNewNote.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
holder.small_row_description_notlarim.setText(newNote.getText());
mNotes.setDescription(newNote.getText().toString());
db.updateNote(mNotes.getId(),
mNotes.getTitle(),
mNotes.getDescription());
db.close();
}
});
cancel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
}
});
break;
}
}
private void rowTypeFace(TextView title, TextView description, TextView date) {
String textType = "fonts/montserrat.ttf";
String savedTextType = sharedPreferences.getString(context.getResources().getString(R.string.description_fontType), textType);
Typeface face = Typeface.createFromAsset(context.getAssets(), savedTextType);
title.setTypeface(face);
description.setTypeface(face);
date.setTypeface(face);
}
private void shareNote(int position) {
Intent shareNoteToFriends = new Intent(Intent.ACTION_SEND);
shareNoteToFriends.setType("text/plain");
String shareBody = myNotes.get(position).getTitle();
String shareMessage = myNotes.get(position).getDescription();
shareNoteToFriends.putExtra(Intent.EXTRA_SUBJECT, shareBody);
shareNoteToFriends.putExtra(Intent.EXTRA_TEXT, shareMessage);
context.startActivity(Intent.createChooser(shareNoteToFriends, "Paylaş"));
}
private void showDeleteDialog(final int position) {
new AwesomeInfoDialog(context)
.setTitle("Emin misiniz?")
.setMessage(myNotes.get(position).getTitle() + " adlı notunuz silinecek!")
.setColoredCircle(R.color.red)
.setDialogIconAndColor(R.drawable.ic_dialog_error, R.color.white)
.setCancelable(true)
.setColoredCircle(R.color.red)
.setPositiveButtonbackgroundColor(R.color.red)
.setPositiveButtonText("Sil")
.setPositiveButtonTextColor(R.color.white)
.setNegativeButtonbackgroundColor(R.color.green)
.setNegativeButtonText("İptal")
.setNegativeButtonTextColor(R.color.white)
.setPositiveButtonClick(new Closure() {
@Override
public void exec() {
db.open();
db.deleteNote(myNotes.get(position).getId());
db.close();
NotlarimAdapter.this.myNotes.remove(position);
NotlarimAdapter.this.notifyItemRemoved(position);
NotlarimAdapter.this.notifyItemRangeChanged(position, getItemCount() - position);
}
})
.setNegativeButtonClick(new Closure() {
@Override
public void exec() {
}
})
.show();
}
@Override
public long getItemId(int position) {
return position;
}
}
答案 0 :(得分：0)
首先，您的函数changeFontSize编写不正确。好重
您可以这样做：
private void changeFontSize() {
selectFontSize.setOnItemSelectedListener(new MaterialSpinner.OnItemSelectedListener() {
@Override
public void onItemSelected(MaterialSpinner view, int position, long id, Object item) {
String message = "Karakter boyutu: ";
try{
textSize = Integer.parseInt(item);
}catch(ParseException e){
textSize = 12;
}
fontType.setTextSize(textSize);
fontSize.setTextSize(textSize);
text_warning.setTextSize(textSize);
Toast.makeText(context, message + String.valueOf(textSize), Toast.LENGTH_SHORT).show();
if (id >= 0) {
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putFloat(getString(R.string.description_fontSize), textSize);
editor.commit();
}
}
});
}
您可以对功能changeFontType
在这里，您正在覆盖sharedPreferences变量：
sharedPreferences = getApplicationContext().getSharedPreferences(getString(R.string.pref_font_type), MODE_PRIVATE);
sharedPreferences = getApplicationContext().getSharedPreferences(getString(R.string.pref_font_size), MODE_PRIVATE);
我认为您应该阅读sharedPreferences上的documentation才能正确实施。
您应该使用以下命令检索sharedPreferences：
SharedPreferences sharedPref = getActivity().getPreferences(Context.MODE_PRIVATE);
然后使用：
读取值String fontType = sharedPref.getString(R.string.pref_font_type);
String fontSize = sharedPref.getString(R.string.pref_font_size);