質問編集履歴
4
言語名を追記しました
test
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test
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@@ -31,7 +31,7 @@
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```
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### 該当のソースコード
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-
```MenuListFragment
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34
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+
```MenuListFragment.java
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package com.websarva.wings.android.fragmentsample;
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import android.app.Activity;
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@@ -117,7 +117,7 @@
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}
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```
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-
```MenuThanksFragment
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```MenuThanksFragment.java
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package com.websarva.wings.android.fragmentsample;
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3
記入できなかったMenuListFragment,fragment_menu_li追加しました
test
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test
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@@ -31,7 +31,90 @@
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```
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### 該当のソースコード
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```
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+
```MenuListFragment
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package com.websarva.wings.android.fragmentsample;
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import android.app.Activity;
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import android.os.Bundle;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.fragment.app.Fragment;
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import androidx.fragment.app.FragmentManager;
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import androidx.fragment.app.FragmentTransaction;
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import android.view.View;
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import android.widget.AdapterView;
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import android.widget.ListView;
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import android.widget.SimpleAdapter;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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public class MenuListFragment extends Fragment {
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public MenuListFragment() {
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super(R.layout.fragment_menu_list);
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}
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@Override
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public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
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super.onViewCreated(view, savedInstanceState);
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ListView lvMenu = view.findViewById(R.id.lvMenu);
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List<Map<String, String>> menuList = new ArrayList<>();
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Map<String, String> menu = new HashMap<>();
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menu.put("name", "唐揚げ定食");
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menu.put("price", "800円");
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menuList.add(menu);
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menu = new HashMap<>();
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menu.put("name", "ハンバーグ定食");
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menu.put("price", "850円");
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menuList.add(menu);
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menu = new HashMap<>();
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menu.put("name", "刺身定食");
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menu.put("price", "1200円");
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menuList.add(menu);
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menu = new HashMap<>();
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menu.put("name", "お好み焼き");
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menu.put("price", "700円");
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menuList.add(menu);
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87
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Activity parentActivity = getActivity();
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89
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String[] from = {"name", "price"};
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90
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int[] to = {android.R.id.text1, android.R.id.text2};
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91
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SimpleAdapter adapter = new SimpleAdapter(parentActivity, menuList,
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android.R.layout.simple_list_item_2, from, to);
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lvMenu.setAdapter(adapter);
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lvMenu.setOnItemClickListener(new ListItemClickListener());
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}
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private class ListItemClickListener implements AdapterView.OnItemClickListener {
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@Override
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public void onItemClick(AdapterView<?> parent, View view, int position, long id){
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Map<String,String> item = (Map<String, String>) parent.getItemAtPosition(position);
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String menuName = item.get("name");
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String menuPrice = item.get("price");
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105
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Bundle bundle = new Bundle();
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bundle.putString("menuName",menuName);
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bundle.putString("menuPrice",menuPrice);
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108
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+
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109
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+
FragmentManager manager = getParentFragmentManager();
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+
FragmentTransaction transaction = manager.beginTransaction();
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+
transaction.setReorderingAllowed(true);
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+
transaction.addToBackStack("Only List");
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113
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+
transaction.replace(R.id.fragmentMainContainer, MenuThanksFragment.class, bundle);
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+
transaction.commit();
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115
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+
}
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+
}
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+
}
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35
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```
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36
119
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37
120
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```MenuThanksFragment
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|
@@ -153,7 +236,19 @@
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153
236
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</androidx.constraintlayout.widget.ConstraintLayout>
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|
154
237
|
```
|
|
155
238
|
|
|
156
|
-
```
|
|
239
|
+
```fragment_menu_list.xml
|
|
240
|
+
<?xml version="1.0" encoding="utf-8"?>
|
|
241
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+
<ListView
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+
xmlns:android="http://schemas.android.com/apk/res/android"
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+
xmlns:tools="http://schemas.android.com/tools"
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244
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+
android:id="@+id/lvMenu"
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245
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+
android:layout_width="match_parent"
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|
246
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+
android:layout_height="match_parent"
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|
247
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+
tools:context=".MenuListFragment">
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248
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+
|
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249
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+
<!-- TODO: Update blank fragment layout -->
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250
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+
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|
251
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+
</ListView>
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157
252
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```
|
|
158
253
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159
254
|
### 試したこと・調べたこと
|
2
タグを変更しました
test
CHANGED
|
File without changes
|
test
CHANGED
|
File without changes
|
1
エラーメッセージの修正をしました
test
CHANGED
|
File without changes
|
test
CHANGED
|
@@ -8,32 +8,30 @@
|
|
|
8
8
|
|
|
9
9
|
|
|
10
10
|
### エラーメッセージ
|
|
11
|
-
```
|
|
12
|
-
|
|
13
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-
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14
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-
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15
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-
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27
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28
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29
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-
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11
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+
```logcat
|
|
12
|
+
Process: com.websarva.wings.android.fragmentsample, PID: 16880
|
|
13
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+
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setText(java.lang.CharSequence)' on a null object reference
|
|
14
|
+
at com.websarva.wings.android.fragmentsample.MenuThanksFragment.onViewCreated(MenuThanksFragment.java:32)
|
|
15
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+
at androidx.fragment.app.Fragment.performViewCreated(Fragment.java:2987)
|
|
16
|
+
at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:546)
|
|
17
|
+
at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:282)
|
|
18
|
+
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189)
|
|
19
|
+
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2106)
|
|
20
|
+
at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002)
|
|
21
|
+
at androidx.fragment.app.FragmentManager$5.run(FragmentManager.java:524)
|
|
22
|
+
at android.os.Handler.handleCallback(Handler.java:942)
|
|
23
|
+
at android.os.Handler.dispatchMessage(Handler.java:99)
|
|
24
|
+
at android.os.Looper.loopOnce(Looper.java:201)
|
|
25
|
+
at android.os.Looper.loop(Looper.java:288)
|
|
26
|
+
at android.app.ActivityThread.main(ActivityThread.java:7872)
|
|
27
|
+
at java.lang.reflect.Method.invoke(Native Method)
|
|
28
|
+
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
|
|
29
|
+
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:936)
|
|
30
30
|
|
|
31
31
|
```
|
|
32
32
|
|
|
33
33
|
### 該当のソースコード
|
|
34
|
-
|
|
35
34
|
```
|
|
36
|
-
特になし
|
|
37
35
|
```
|
|
38
36
|
|
|
39
37
|
```MenuThanksFragment
|
|
@@ -156,7 +154,6 @@
|
|
|
156
154
|
```
|
|
157
155
|
|
|
158
156
|
```
|
|
159
|
-
特になし
|
|
160
157
|
```
|
|
161
158
|
|
|
162
159
|
### 試したこと・調べたこと
|