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トップXMLに関する質問設定画面のスピナーで決定した通貨のシンボルを他のアクティビティに反映させたい

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回答編集履歴

5

setCompoundDrawablesRelativeWithIntrinsicBounds をリソース ID 版へ

2022/06/11 12:40

投稿

jimbe
jimbe

スコア12646

test CHANGED
@@ -10,7 +10,6 @@
10
10
  import androidx.fragment.app.Fragment;
11
11
 
12
12
  import android.content.*;
13
- import android.graphics.drawable.Drawable;
14
13
  import android.os.Bundle;
15
14
  import android.view.*;
16
15
  import android.widget.*;
@@ -128,8 +127,7 @@
128
127
  Currency currency = Currency.values()[pref.getInt(PREF_CURRENCY_VALUE, 0)];
129
128
 
130
129
  EditText price = view.findViewById(R.id.enter_price);
131
- Drawable currencyIcon = getResources().getDrawable(currency.drawableResId, null);
132
- price.setCompoundDrawablesRelativeWithIntrinsicBounds(currencyIcon, null, null, null);
130
+ price.setCompoundDrawablesRelativeWithIntrinsicBounds(currency.drawableResId, 0, 0, 0);
133
131
  }
134
132
  }
135
133
  }

4

アイコンのリソース名等を変更

2022/06/11 06:10

投稿

jimbe
jimbe

スコア12646

test CHANGED
@@ -3,7 +3,7 @@
3
3
  ---
4
4
 
5
5
  フラグメントでセッティング画面とメイン画面を作ってやってみました。
6
- drawable に ic_japanese_yen, ic_us_dollers, ic_euro という各アイコンがある前提です。
6
+ drawable に ic_money, ic_yen, ic_euro という各アイコンがある前提です。
7
7
  ```java
8
8
  import androidx.annotation.*;
9
9
  import androidx.appcompat.app.AppCompatActivity;
@@ -40,9 +40,9 @@
40
40
  }
41
41
 
42
42
  enum Currency {
43
- UsDoller("Us Dollers", R.drawable.ic_us_doller),
43
+ USD("US Dollers", R.drawable.ic_money),
44
- JapaneseYen("Japanese Yen", R.drawable.ic_japanese_yen),
44
+ JPY("Japanese Yen", R.drawable.ic_yen),
45
- Euro("Euro", R.drawable.ic_euro);
45
+ EURO("Euro", R.drawable.ic_euro);
46
46
 
47
47
  final String text;
48
48
  final int drawableResId;

3

enum Currency の valueOf(int) メソッド廃止

2022/06/10 13:15

投稿

jimbe
jimbe

スコア12646

test CHANGED
@@ -44,10 +44,6 @@
44
44
  JapaneseYen("Japanese Yen", R.drawable.ic_japanese_yen),
45
45
  Euro("Euro", R.drawable.ic_euro);
46
46
 
47
- static Currency valueOf(int ordinal) {
48
- return values()[ordinal];
49
- }
50
-
51
47
  final String text;
52
48
  final int drawableResId;
53
49
  Currency(String text, int drawableResId) {
@@ -65,7 +61,7 @@
65
61
  super.onViewCreated(view, savedInstanceState);
66
62
 
67
63
  SharedPreferences pref = requireActivity().getSharedPreferences(PREF_CURRENCY_FILENAME, Context.MODE_PRIVATE);
68
- Currency currency = Currency.valueOf(pref.getInt(PREF_CURRENCY_VALUE, 0));
64
+ Currency currency = Currency.values()[pref.getInt(PREF_CURRENCY_VALUE, 0)];
69
65
 
70
66
  Spinner spinner = view.findViewById(R.id.currency_spinner);
71
67
  spinner.setAdapter(new CurrencySpinnerAdapter());
@@ -129,7 +125,7 @@
129
125
  super.onViewCreated(view, savedInstanceState);
130
126
 
131
127
  SharedPreferences pref = requireActivity().getSharedPreferences(PREF_CURRENCY_FILENAME, Context.MODE_PRIVATE);
132
- Currency currency = Currency.valueOf(pref.getInt(PREF_CURRENCY_VALUE, 0));
128
+ Currency currency = Currency.values()[pref.getInt(PREF_CURRENCY_VALUE, 0)];
133
129
 
134
130
  EditText price = view.findViewById(R.id.enter_price);
135
131
  Drawable currencyIcon = getResources().getDrawable(currency.drawableResId, null);

2

セッティングの選択をラジオボタンからスピナーへ

2022/06/10 12:42

投稿

jimbe
jimbe

スコア12646

test CHANGED
@@ -7,17 +7,16 @@
7
7
  ```java
8
8
  import androidx.annotation.*;
9
9
  import androidx.appcompat.app.AppCompatActivity;
10
- import androidx.core.content.res.ResourcesCompat;
11
10
  import androidx.fragment.app.Fragment;
12
11
 
13
12
  import android.content.*;
14
13
  import android.graphics.drawable.Drawable;
15
14
  import android.os.Bundle;
16
- import android.view.View;
15
+ import android.view.*;
17
16
  import android.widget.*;
18
17
 
19
18
  public class MainActivity extends AppCompatActivity {
20
- private static final String PREF_CURRENCY_FILENAME = "currency";
19
+ private static final String PREF_CURRENCY_FILENAME = "CURRENCY_SHARED";
21
20
  private static final String PREF_CURRENCY_VALUE = "currencyValue";
22
21
 
23
22
  @Override
@@ -41,23 +40,19 @@
41
40
  }
42
41
 
43
42
  enum Currency {
44
- JapaneseYen(R.id.yen, R.drawable.ic_japanese_yen),
45
- UsDoller(R.id.doller, R.drawable.ic_us_doller),
43
+ UsDoller("Us Dollers", R.drawable.ic_us_doller),
44
+ JapaneseYen("Japanese Yen", R.drawable.ic_japanese_yen),
46
- Euro(R.id.euro, R.drawable.ic_euro);
45
+ Euro("Euro", R.drawable.ic_euro);
47
46
 
48
47
  static Currency valueOf(int ordinal) {
49
48
  return values()[ordinal];
50
49
  }
51
- static Currency fromLayoutId(int id) {
50
+
52
- for(Currency c : values()) if(c.layoutId == id) return c;
53
- throw new IllegalArgumentException("id=" + id);
54
- }
55
-
56
- private final int layoutId;
51
+ final String text;
57
52
  final int drawableResId;
58
- Currency(int layoutId, int drawableResId) {
53
+ Currency(String text, int drawableResId) {
59
- this.layoutId = layoutId;
54
+ this.text = text;
60
- this. drawableResId = drawableResId;
55
+ this.drawableResId = drawableResId;
61
56
  }
62
57
  }
63
58
 
@@ -72,13 +67,56 @@
72
67
  SharedPreferences pref = requireActivity().getSharedPreferences(PREF_CURRENCY_FILENAME, Context.MODE_PRIVATE);
73
68
  Currency currency = Currency.valueOf(pref.getInt(PREF_CURRENCY_VALUE, 0));
74
69
 
75
- RadioGroup currencyGroup = view.findViewById(R.id.currency);
70
+ Spinner spinner = view.findViewById(R.id.currency_spinner);
76
- currencyGroup.check(currency.layoutId);
71
+ spinner.setAdapter(new CurrencySpinnerAdapter());
77
- currencyGroup.setOnCheckedChangeListener((radioGroup, checkedId) -> {
72
+ spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
73
+ @Override
74
+ public void onItemSelected(AdapterView<?> adapterView, View view, int position, long id) {
78
- SharedPreferences.Editor editor = pref.edit();
75
+ SharedPreferences.Editor editor = pref.edit();
79
- editor.putInt(PREF_CURRENCY_VALUE, Currency.fromLayoutId(checkedId).ordinal());
76
+ editor.putInt(PREF_CURRENCY_VALUE, position);
80
- editor.commit();
77
+ editor.commit();
78
+ }
79
+ @Override
80
+ public void onNothingSelected(AdapterView<?> adapterView) {
81
+ }
81
82
  });
83
+ spinner.setSelection(currency.ordinal());
84
+ }
85
+
86
+ class CurrencySpinnerAdapter extends BaseAdapter {
87
+ @Override
88
+ public int getCount() {
89
+ return Currency.values().length;
90
+ }
91
+
92
+ @Override
93
+ public Object getItem(int i) {
94
+ return Currency.values()[i];
95
+ }
96
+
97
+ @Override
98
+ public long getItemId(int i) {
99
+ return 0;
100
+ }
101
+
102
+ @NonNull
103
+ @Override
104
+ public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
105
+ if(convertView == null) {
106
+ convertView = LayoutInflater.from(parent.getContext()).inflate(R.layout.currency_spinner, parent, false);
107
+ }
108
+ TextView nameView = convertView.findViewById(R.id.currency_name_textview);
109
+ ImageView symbolView = convertView.findViewById(R.id.currency_symbol);
110
+ Currency currency = Currency.values()[position];
111
+ nameView.setText(currency.text);
112
+ symbolView.setImageResource(currency.drawableResId);
113
+ return convertView;
114
+ }
115
+
116
+ @Override
117
+ public View getDropDownView(int position, View convertView, ViewGroup parent) {
118
+ return getView(position, convertView, parent);
119
+ }
82
120
  }
83
121
  }
84
122
 
@@ -177,28 +215,37 @@
177
215
  android:layout_height="match_parent"
178
216
  tools:context=".MainActivity">
179
217
 
180
- <RadioGroup
218
+ <Spinner
181
- android:id="@+id/currency"
219
+ android:id="@+id/currency_spinner"
182
- android:layout_width="wrap_content"
220
+ android:layout_width="0dp"
183
- android:layout_height="wrap_content"
221
+ android:layout_height="wrap_content"
184
- app:layout_constraintEnd_toEndOf="parent"
222
+ app:layout_constraintEnd_toEndOf="parent"
185
- app:layout_constraintStart_toStartOf="parent"
223
+ app:layout_constraintStart_toStartOf="parent"
186
- app:layout_constraintTop_toTopOf="parent" >
224
+ app:layout_constraintTop_toTopOf="parent" />
187
- <RadioButton
188
- android:id="@+id/yen"
189
- android:text="円"
190
- android:layout_width="wrap_content"
191
- android:layout_height="wrap_content" />
192
- <RadioButton
193
- android:id="@+id/doller"
194
- android:text="ドル"
195
- android:layout_width="wrap_content"
196
- android:layout_height="wrap_content" />
197
- <RadioButton
198
- android:id="@+id/euro"
199
- android:text="ユーロ"
200
- android:layout_width="wrap_content"
201
- android:layout_height="wrap_content" />
202
- </RadioGroup>
203
- </androidx.constraintlayout.widget.ConstraintLayout>
225
+ </androidx.constraintlayout.widget.ConstraintLayout>
204
- ```
226
+ ```
227
+ res/layout/currency_spinner.xml
228
+ ```xml
229
+ <?xml version="1.0" encoding="utf-8"?>
230
+ <androidx.constraintlayout.widget.ConstraintLayout
231
+ xmlns:android="http://schemas.android.com/apk/res/android"
232
+ xmlns:app="http://schemas.android.com/apk/res-auto"
233
+ android:layout_width="match_parent"
234
+ android:layout_height="wrap_content">
235
+ <ImageView
236
+ android:id="@+id/currency_symbol"
237
+ android:layout_width="32dp"
238
+ android:layout_height="32dp"
239
+ app:layout_constraintStart_toStartOf="parent"
240
+ app:layout_constraintTop_toTopOf="parent" />
241
+ <TextView
242
+ android:id="@+id/currency_name_textview"
243
+ android:layout_width="0dp"
244
+ android:layout_height="wrap_content"
245
+ android:text="currency_name"
246
+ app:layout_constraintBottom_toBottomOf="@id/currency_symbol"
247
+ app:layout_constraintEnd_toEndOf="parent"
248
+ app:layout_constraintStart_toEndOf="@id/currency_symbol"
249
+ app:layout_constraintTop_toTopOf="@id/currency_symbol" />
250
+ </androidx.constraintlayout.widget.ConstraintLayout>
251
+ ```

1

コード追加

2022/06/07 12:25

投稿

jimbe
jimbe

スコア12646

test CHANGED
@@ -1 +1,204 @@
1
1
  SharedPreferences を用いるのは如何でしょうか。
2
+
3
+ ---
4
+
5
+ フラグメントでセッティング画面とメイン画面を作ってやってみました。
6
+ drawable に ic_japanese_yen, ic_us_dollers, ic_euro という各アイコンがある前提です。
7
+ ```java
8
+ import androidx.annotation.*;
9
+ import androidx.appcompat.app.AppCompatActivity;
10
+ import androidx.core.content.res.ResourcesCompat;
11
+ import androidx.fragment.app.Fragment;
12
+
13
+ import android.content.*;
14
+ import android.graphics.drawable.Drawable;
15
+ import android.os.Bundle;
16
+ import android.view.View;
17
+ import android.widget.*;
18
+
19
+ public class MainActivity extends AppCompatActivity {
20
+ private static final String PREF_CURRENCY_FILENAME = "currency";
21
+ private static final String PREF_CURRENCY_VALUE = "currencyValue";
22
+
23
+ @Override
24
+ protected void onCreate(Bundle savedInstanceState) {
25
+ super.onCreate(savedInstanceState);
26
+ setContentView(R.layout.activity_main);
27
+
28
+ Button settingButton = findViewById(R.id.settingButton);
29
+ settingButton.setOnClickListener(v -> {
30
+ getSupportFragmentManager().beginTransaction()
31
+ .replace(R.id.fragment_container, new SettingFragment())
32
+ .commit();
33
+ });
34
+
35
+ Button mainButton = findViewById(R.id.mainButton);
36
+ mainButton.setOnClickListener(v -> {
37
+ getSupportFragmentManager().beginTransaction()
38
+ .replace(R.id.fragment_container, new MainFragment())
39
+ .commit();
40
+ });
41
+ }
42
+
43
+ enum Currency {
44
+ JapaneseYen(R.id.yen, R.drawable.ic_japanese_yen),
45
+ UsDoller(R.id.doller, R.drawable.ic_us_doller),
46
+ Euro(R.id.euro, R.drawable.ic_euro);
47
+
48
+ static Currency valueOf(int ordinal) {
49
+ return values()[ordinal];
50
+ }
51
+ static Currency fromLayoutId(int id) {
52
+ for(Currency c : values()) if(c.layoutId == id) return c;
53
+ throw new IllegalArgumentException("id=" + id);
54
+ }
55
+
56
+ private final int layoutId;
57
+ final int drawableResId;
58
+ Currency(int layoutId, int drawableResId) {
59
+ this.layoutId = layoutId;
60
+ this. drawableResId = drawableResId;
61
+ }
62
+ }
63
+
64
+ public static class SettingFragment extends Fragment {
65
+ SettingFragment() {
66
+ super(R.layout.fragment_setting);
67
+ }
68
+ @Override
69
+ public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
70
+ super.onViewCreated(view, savedInstanceState);
71
+
72
+ SharedPreferences pref = requireActivity().getSharedPreferences(PREF_CURRENCY_FILENAME, Context.MODE_PRIVATE);
73
+ Currency currency = Currency.valueOf(pref.getInt(PREF_CURRENCY_VALUE, 0));
74
+
75
+ RadioGroup currencyGroup = view.findViewById(R.id.currency);
76
+ currencyGroup.check(currency.layoutId);
77
+ currencyGroup.setOnCheckedChangeListener((radioGroup, checkedId) -> {
78
+ SharedPreferences.Editor editor = pref.edit();
79
+ editor.putInt(PREF_CURRENCY_VALUE, Currency.fromLayoutId(checkedId).ordinal());
80
+ editor.commit();
81
+ });
82
+ }
83
+ }
84
+
85
+ public static class MainFragment extends Fragment {
86
+ MainFragment() {
87
+ super(R.layout.fragment_main);
88
+ }
89
+ @Override
90
+ public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
91
+ super.onViewCreated(view, savedInstanceState);
92
+
93
+ SharedPreferences pref = requireActivity().getSharedPreferences(PREF_CURRENCY_FILENAME, Context.MODE_PRIVATE);
94
+ Currency currency = Currency.valueOf(pref.getInt(PREF_CURRENCY_VALUE, 0));
95
+
96
+ EditText price = view.findViewById(R.id.enter_price);
97
+ Drawable currencyIcon = getResources().getDrawable(currency.drawableResId, null);
98
+ price.setCompoundDrawablesRelativeWithIntrinsicBounds(currencyIcon, null, null, null);
99
+ }
100
+ }
101
+ }
102
+ ```
103
+ res/layout/activity_main.xml
104
+ ```xml
105
+ <?xml version="1.0" encoding="utf-8"?>
106
+ <androidx.constraintlayout.widget.ConstraintLayout
107
+ xmlns:android="http://schemas.android.com/apk/res/android"
108
+ xmlns:app="http://schemas.android.com/apk/res-auto"
109
+ xmlns:tools="http://schemas.android.com/tools"
110
+ android:layout_width="match_parent"
111
+ android:layout_height="match_parent"
112
+ tools:context=".MainActivity">
113
+ <Button
114
+ android:id="@+id/settingButton"
115
+ android:text="SETTING"
116
+ android:layout_width="0dp"
117
+ android:layout_height="wrap_content"
118
+ app:layout_constraintEnd_toStartOf="@id/mainButton"
119
+ app:layout_constraintStart_toStartOf="parent"
120
+ app:layout_constraintTop_toTopOf="parent" />
121
+ <Button
122
+ android:id="@+id/mainButton"
123
+ android:text="MAIN"
124
+ android:layout_width="0dp"
125
+ android:layout_height="wrap_content"
126
+ app:layout_constraintEnd_toEndOf="parent"
127
+ app:layout_constraintStart_toEndOf="@id/settingButton"
128
+ app:layout_constraintTop_toTopOf="parent" />
129
+ <FrameLayout
130
+ android:id="@+id/fragment_container"
131
+ android:layout_width="0dp"
132
+ android:layout_height="0dp"
133
+ app:layout_constraintBottom_toBottomOf="parent"
134
+ app:layout_constraintEnd_toEndOf="parent"
135
+ app:layout_constraintStart_toStartOf="parent"
136
+ app:layout_constraintTop_toBottomOf="@id/settingButton" />
137
+ </androidx.constraintlayout.widget.ConstraintLayout>
138
+ ```
139
+ res/layout/fragment_main.xml
140
+ ```xml
141
+ <?xml version="1.0" encoding="utf-8"?>
142
+ <androidx.constraintlayout.widget.ConstraintLayout
143
+ xmlns:android="http://schemas.android.com/apk/res/android"
144
+ xmlns:app="http://schemas.android.com/apk/res-auto"
145
+ xmlns:tools="http://schemas.android.com/tools"
146
+ android:layout_width="match_parent"
147
+ android:layout_height="match_parent"
148
+ tools:context=".MainActivity">
149
+
150
+ <EditText
151
+ android:id="@+id/enter_price"
152
+ android:layout_width="wrap_content"
153
+ android:layout_height="wrap_content"
154
+ android:layout_marginTop="10dp"
155
+ android:ems="10"
156
+ android:hint="new_budget_tracker_price_hint"
157
+ android:inputType="number"
158
+ app:layout_constraintEnd_toEndOf="parent"
159
+ app:layout_constraintStart_toStartOf="parent"
160
+ app:layout_constraintTop_toTopOf="parent"
161
+ app:layout_constraintBottom_toBottomOf="parent"
162
+ android:drawableStart="@drawable/ic_japanese_yen"
163
+ android:paddingEnd="5dp"
164
+ android:drawablePadding="12dp"
165
+ tools:ignore="SpeakableTextPresentCheck" />
166
+
167
+ </androidx.constraintlayout.widget.ConstraintLayout>
168
+ ```
169
+ res/layout/fragment_setting.xml
170
+ ```xml
171
+ <?xml version="1.0" encoding="utf-8"?>
172
+ <androidx.constraintlayout.widget.ConstraintLayout
173
+ xmlns:android="http://schemas.android.com/apk/res/android"
174
+ xmlns:app="http://schemas.android.com/apk/res-auto"
175
+ xmlns:tools="http://schemas.android.com/tools"
176
+ android:layout_width="match_parent"
177
+ android:layout_height="match_parent"
178
+ tools:context=".MainActivity">
179
+
180
+ <RadioGroup
181
+ android:id="@+id/currency"
182
+ android:layout_width="wrap_content"
183
+ android:layout_height="wrap_content"
184
+ app:layout_constraintEnd_toEndOf="parent"
185
+ app:layout_constraintStart_toStartOf="parent"
186
+ app:layout_constraintTop_toTopOf="parent" >
187
+ <RadioButton
188
+ android:id="@+id/yen"
189
+ android:text="円"
190
+ android:layout_width="wrap_content"
191
+ android:layout_height="wrap_content" />
192
+ <RadioButton
193
+ android:id="@+id/doller"
194
+ android:text="ドル"
195
+ android:layout_width="wrap_content"
196
+ android:layout_height="wrap_content" />
197
+ <RadioButton
198
+ android:id="@+id/euro"
199
+ android:text="ユーロ"
200
+ android:layout_width="wrap_content"
201
+ android:layout_height="wrap_content" />
202
+ </RadioGroup>
203
+ </androidx.constraintlayout.widget.ConstraintLayout>
204
+ ```