回答編集履歴
5
setReorderingAllowed(true)
test
CHANGED
|
@@ -69,6 +69,7 @@
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69
69
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getParentFragmentManager().beginTransaction()
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70
70
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.replace(R.id.fragment_container_view, new BFragment())
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71
71
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.addToBackStack("AtoB")
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72
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+
.setReorderingAllowed(true)
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72
73
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.commit();
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73
74
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});
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74
75
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}
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@@ -127,6 +128,7 @@
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127
128
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getParentFragmentManager().beginTransaction()
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128
129
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.replace(R.id.fragment_container_view, new CFragment())
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129
130
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.addToBackStack(null)
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131
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+
.setReorderingAllowed(true)
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130
132
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.commit();
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131
133
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});
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132
134
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}
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4
package 消し忘れ
test
CHANGED
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@@ -109,8 +109,6 @@
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109
109
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```
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110
110
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BFragment.java
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111
111
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```java
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112
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-
package com.teratail.q_5ffr2ytk1qxm39;
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113
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-
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114
112
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import android.os.Bundle;
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115
113
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import android.view.View;
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116
114
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import android.widget.Button;
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3
追記取り消し
test
CHANGED
|
@@ -7,7 +7,6 @@
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|
|
7
7
|
|
|
8
8
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---
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9
9
|
質問本文の回答とは少し違うことになりますが、 A→B→C→(back)→A→(back)→終了、です。
|
|
10
|
-
(コメントに書いた qiita の記事の解決方法とは少し違います。)
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11
10
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12
11
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MainActivity.java
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|
13
12
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```java
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2
追記
test
CHANGED
|
@@ -7,6 +7,7 @@
|
|
|
7
7
|
|
|
8
8
|
---
|
|
9
9
|
質問本文の回答とは少し違うことになりますが、 A→B→C→(back)→A→(back)→終了、です。
|
|
10
|
+
(コメントに書いた qiita の記事の解決方法とは少し違います。)
|
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10
11
|
|
|
11
12
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MainActivity.java
|
|
12
13
|
```java
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1
コード追加
test
CHANGED
|
@@ -4,3 +4,213 @@
|
|
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4
4
|
が不要です。
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5
5
|
|
|
6
6
|
フラグメントは基本的には終わらせる必要はありません。
|
|
7
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+
|
|
8
|
+
---
|
|
9
|
+
質問本文の回答とは少し違うことになりますが、 A→B→C→(back)→A→(back)→終了、です。
|
|
10
|
+
|
|
11
|
+
MainActivity.java
|
|
12
|
+
```java
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|
13
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+
import androidx.appcompat.app.AppCompatActivity;
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|
14
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+
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15
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+
import android.os.Bundle;
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16
|
+
|
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17
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+
public class MainActivity extends AppCompatActivity {
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18
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+
@Override
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|
19
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+
protected void onCreate(Bundle savedInstanceState) {
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20
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+
super.onCreate(savedInstanceState);
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21
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+
setContentView(R.layout.activity_main);
|
|
22
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+
|
|
23
|
+
if(savedInstanceState == null) {
|
|
24
|
+
getSupportFragmentManager().beginTransaction()
|
|
25
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+
.replace(R.id.fragment_container_view, new AFragment())
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|
26
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+
.commit();
|
|
27
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+
}
|
|
28
|
+
}
|
|
29
|
+
}
|
|
30
|
+
```
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|
31
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+
res/layout/activity_main.xml
|
|
32
|
+
```xml
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|
33
|
+
<?xml version="1.0" encoding="utf-8"?>
|
|
34
|
+
<androidx.constraintlayout.widget.ConstraintLayout
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|
35
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+
xmlns:android="http://schemas.android.com/apk/res/android"
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|
36
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+
xmlns:app="http://schemas.android.com/apk/res-auto"
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37
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+
xmlns:tools="http://schemas.android.com/tools"
|
|
38
|
+
android:layout_width="match_parent"
|
|
39
|
+
android:layout_height="match_parent"
|
|
40
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+
tools:context=".MainActivity">
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41
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+
|
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42
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+
<androidx.fragment.app.FragmentContainerView
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|
43
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+
android:id="@+id/fragment_container_view"
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44
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+
android:layout_width="wrap_content"
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|
45
|
+
android:layout_height="wrap_content"
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46
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+
app:layout_constraintBottom_toBottomOf="parent"
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47
|
+
app:layout_constraintEnd_toEndOf="parent"
|
|
48
|
+
app:layout_constraintStart_toStartOf="parent"
|
|
49
|
+
app:layout_constraintTop_toTopOf="parent" />
|
|
50
|
+
</androidx.constraintlayout.widget.ConstraintLayout>
|
|
51
|
+
```
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|
52
|
+
AFragment.java
|
|
53
|
+
```java
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|
54
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+
import android.os.Bundle;
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|
55
|
+
import android.view.View;
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|
56
|
+
import android.widget.Button;
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57
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+
|
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58
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+
import androidx.annotation.*;
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59
|
+
import androidx.fragment.app.Fragment;
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60
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+
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61
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+
public class AFragment extends Fragment {
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62
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+
public AFragment() {
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|
63
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+
super(R.layout.fragment_a);
|
|
64
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+
}
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|
65
|
+
@Override
|
|
66
|
+
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
|
|
67
|
+
Button button = view.findViewById(R.id.button);
|
|
68
|
+
button.setOnClickListener(v -> {
|
|
69
|
+
getParentFragmentManager().beginTransaction()
|
|
70
|
+
.replace(R.id.fragment_container_view, new BFragment())
|
|
71
|
+
.addToBackStack("AtoB")
|
|
72
|
+
.commit();
|
|
73
|
+
});
|
|
74
|
+
}
|
|
75
|
+
}
|
|
76
|
+
```
|
|
77
|
+
res/layout/fragment_a.xml
|
|
78
|
+
```xml
|
|
79
|
+
<?xml version="1.0" encoding="utf-8"?>
|
|
80
|
+
<androidx.constraintlayout.widget.ConstraintLayout
|
|
81
|
+
xmlns:android="http://schemas.android.com/apk/res/android"
|
|
82
|
+
xmlns:app="http://schemas.android.com/apk/res-auto"
|
|
83
|
+
xmlns:tools="http://schemas.android.com/tools"
|
|
84
|
+
android:layout_width="match_parent"
|
|
85
|
+
android:layout_height="match_parent"
|
|
86
|
+
tools:context=".AFragment">
|
|
87
|
+
|
|
88
|
+
<TextView
|
|
89
|
+
android:id="@+id/textView"
|
|
90
|
+
android:layout_width="wrap_content"
|
|
91
|
+
android:layout_height="wrap_content"
|
|
92
|
+
android:text="AFragment"
|
|
93
|
+
android:textSize="30dp"
|
|
94
|
+
app:layout_constraintBottom_toTopOf="@id/button"
|
|
95
|
+
app:layout_constraintEnd_toEndOf="parent"
|
|
96
|
+
app:layout_constraintStart_toStartOf="parent"
|
|
97
|
+
app:layout_constraintTop_toTopOf="parent" />
|
|
98
|
+
<Button
|
|
99
|
+
android:id="@+id/button"
|
|
100
|
+
android:layout_width="wrap_content"
|
|
101
|
+
android:layout_height="wrap_content"
|
|
102
|
+
android:text="TO B"
|
|
103
|
+
android:textSize="30dp"
|
|
104
|
+
app:layout_constraintBottom_toBottomOf="parent"
|
|
105
|
+
app:layout_constraintEnd_toEndOf="parent"
|
|
106
|
+
app:layout_constraintStart_toStartOf="parent"
|
|
107
|
+
app:layout_constraintTop_toBottomOf="@id/textView" />
|
|
108
|
+
</androidx.constraintlayout.widget.ConstraintLayout>
|
|
109
|
+
```
|
|
110
|
+
BFragment.java
|
|
111
|
+
```java
|
|
112
|
+
package com.teratail.q_5ffr2ytk1qxm39;
|
|
113
|
+
|
|
114
|
+
import android.os.Bundle;
|
|
115
|
+
import android.view.View;
|
|
116
|
+
import android.widget.Button;
|
|
117
|
+
|
|
118
|
+
import androidx.annotation.*;
|
|
119
|
+
import androidx.fragment.app.*;
|
|
120
|
+
|
|
121
|
+
public class BFragment extends Fragment {
|
|
122
|
+
public BFragment() {
|
|
123
|
+
super(R.layout.fragment_b);
|
|
124
|
+
}
|
|
125
|
+
@Override
|
|
126
|
+
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
|
|
127
|
+
Button button = view.findViewById(R.id.button);
|
|
128
|
+
button.setOnClickListener(v -> {
|
|
129
|
+
getParentFragmentManager().beginTransaction()
|
|
130
|
+
.replace(R.id.fragment_container_view, new CFragment())
|
|
131
|
+
.addToBackStack(null)
|
|
132
|
+
.commit();
|
|
133
|
+
});
|
|
134
|
+
}
|
|
135
|
+
}
|
|
136
|
+
```
|
|
137
|
+
res/layout/fragment_b.xml
|
|
138
|
+
```xml
|
|
139
|
+
<?xml version="1.0" encoding="utf-8"?>
|
|
140
|
+
<androidx.constraintlayout.widget.ConstraintLayout
|
|
141
|
+
xmlns:android="http://schemas.android.com/apk/res/android"
|
|
142
|
+
xmlns:app="http://schemas.android.com/apk/res-auto"
|
|
143
|
+
xmlns:tools="http://schemas.android.com/tools"
|
|
144
|
+
android:layout_width="match_parent"
|
|
145
|
+
android:layout_height="match_parent"
|
|
146
|
+
tools:context=".BFragment">
|
|
147
|
+
|
|
148
|
+
<TextView
|
|
149
|
+
android:id="@+id/textView"
|
|
150
|
+
android:layout_width="wrap_content"
|
|
151
|
+
android:layout_height="wrap_content"
|
|
152
|
+
android:text="BFragment"
|
|
153
|
+
android:textSize="30dp"
|
|
154
|
+
app:layout_constraintBottom_toTopOf="@id/button"
|
|
155
|
+
app:layout_constraintEnd_toEndOf="parent"
|
|
156
|
+
app:layout_constraintStart_toStartOf="parent"
|
|
157
|
+
app:layout_constraintTop_toTopOf="parent" />
|
|
158
|
+
<Button
|
|
159
|
+
android:id="@+id/button"
|
|
160
|
+
android:layout_width="wrap_content"
|
|
161
|
+
android:layout_height="wrap_content"
|
|
162
|
+
android:text="TO C"
|
|
163
|
+
android:textSize="30dp"
|
|
164
|
+
app:layout_constraintBottom_toBottomOf="parent"
|
|
165
|
+
app:layout_constraintEnd_toEndOf="parent"
|
|
166
|
+
app:layout_constraintStart_toStartOf="parent"
|
|
167
|
+
app:layout_constraintTop_toBottomOf="@id/textView" />
|
|
168
|
+
</androidx.constraintlayout.widget.ConstraintLayout>
|
|
169
|
+
```
|
|
170
|
+
CFragment.java
|
|
171
|
+
```java
|
|
172
|
+
import android.os.Bundle;
|
|
173
|
+
import android.view.View;
|
|
174
|
+
|
|
175
|
+
import androidx.activity.OnBackPressedCallback;
|
|
176
|
+
import androidx.annotation.*;
|
|
177
|
+
import androidx.fragment.app.*;
|
|
178
|
+
|
|
179
|
+
public class CFragment extends Fragment {
|
|
180
|
+
public CFragment() {
|
|
181
|
+
super(R.layout.fragment_c);
|
|
182
|
+
}
|
|
183
|
+
@Override
|
|
184
|
+
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
|
|
185
|
+
requireActivity().getOnBackPressedDispatcher().addCallback(getViewLifecycleOwner(), new OnBackPressedCallback(true) {
|
|
186
|
+
@Override
|
|
187
|
+
public void handleOnBackPressed() {
|
|
188
|
+
getParentFragmentManager().popBackStack("AtoB", FragmentManager.POP_BACK_STACK_INCLUSIVE);
|
|
189
|
+
}
|
|
190
|
+
});
|
|
191
|
+
}
|
|
192
|
+
}
|
|
193
|
+
```
|
|
194
|
+
res/layout/fragment_c.xml
|
|
195
|
+
```xml
|
|
196
|
+
<?xml version="1.0" encoding="utf-8"?>
|
|
197
|
+
<androidx.constraintlayout.widget.ConstraintLayout
|
|
198
|
+
xmlns:android="http://schemas.android.com/apk/res/android"
|
|
199
|
+
xmlns:app="http://schemas.android.com/apk/res-auto"
|
|
200
|
+
xmlns:tools="http://schemas.android.com/tools"
|
|
201
|
+
android:layout_width="match_parent"
|
|
202
|
+
android:layout_height="match_parent"
|
|
203
|
+
tools:context=".CFragment">
|
|
204
|
+
|
|
205
|
+
<TextView
|
|
206
|
+
android:id="@+id/textView"
|
|
207
|
+
android:layout_width="wrap_content"
|
|
208
|
+
android:layout_height="wrap_content"
|
|
209
|
+
android:text="CFragment"
|
|
210
|
+
android:textSize="30dp"
|
|
211
|
+
app:layout_constraintBottom_toBottomOf="parent"
|
|
212
|
+
app:layout_constraintEnd_toEndOf="parent"
|
|
213
|
+
app:layout_constraintStart_toStartOf="parent"
|
|
214
|
+
app:layout_constraintTop_toTopOf="parent" />
|
|
215
|
+
</androidx.constraintlayout.widget.ConstraintLayout>
|
|
216
|
+
```
|