回答編集履歴
2
コード修正
test
CHANGED
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@@ -13,7 +13,7 @@
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13
13
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protected void onCreate(Bundle savedInstanceState) {
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14
14
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//略
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15
15
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adapter = new RecyclerViewAdapter(noteManager.getNoteItems());
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16
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-
adapter.set
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16
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+
adapter.setDeleteListener((view, position) -> {
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17
17
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DialogFragmentCheckingDelete dialogFragment = new DialogFragmentCheckingDelete();
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18
18
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dialogFragment.show(getSupportFragmentManager(), "DialogFragmentCheckingDelete");
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19
19
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});
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@@ -25,8 +25,12 @@
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25
25
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```java
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26
26
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public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.RecyclerListViewHolder> {
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27
27
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//略
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28
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+
interface DeleteListener {
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29
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+
void onDelete(View view, int position);
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30
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+
}
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31
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+
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28
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-
private
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32
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+
private DeleteListener deleteListener;
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29
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-
void set
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33
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+
void setDeleteListener(DeleteListener deleteListener) {
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30
34
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this.deleteListener = deleteListener;
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31
35
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}
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32
36
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@@ -34,7 +38,23 @@
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34
38
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public void onBindViewHolder(@NonNull RecyclerListViewHolder holder, int position) {
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35
39
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holder._tvTitle.setText(titles.get(position));
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36
40
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holder._tvText.setText(texts.get(position));
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41
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+
holder._iBtnDeleteL.setTag(position);
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42
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+
}
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43
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+
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44
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+
public class RecyclerListViewHolder extends RecyclerView.ViewHolder {
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45
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+
final TextView _tvTitle;
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46
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+
final TextView _tvText;
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47
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+
final Button _iBtnDeleteL;
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48
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+
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49
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+
public NoteViewHolder(View itemView) {
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50
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+
super(itemView);
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51
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_tvTitle= itemView.findViewById(R.id.tvNoteTitle);
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52
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+
_tvText= itemView.findViewById(R.id.tvNoteText);
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53
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+
_iBtnDeleteL= itemView.findViewById(R.id.dtnDelete);
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37
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-
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54
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+
_iBtnDeleteL.setOnClickListener(view -> {
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55
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+
if(deleteListener != null) deleteListener.onDelete(view, (int)_iBtnDeleteL.getTag());
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56
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+
});
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57
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+
}
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38
58
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}
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39
59
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//略
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40
60
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```
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1
コード追加
test
CHANGED
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@@ -6,3 +6,35 @@
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6
6
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ついでに、フラグメントマネージャはアクティビティ毎(ついでにフラグメント毎にも)にありますので、どのアクティビティ(もしくはフラグメント)でも良いという訳にもいきません。
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7
7
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8
8
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ご質問のコードの場合は、Adapter 内でクリック時の処理を行うよりも、アクティビティにクリックされたことを伝えて後の処理を任せるほうが Adapter の役割としては適当に思います。
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9
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+
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10
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+
```java
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11
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+
public class MainActivity extends AppCompatActivity {
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12
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+
@Override
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13
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+
protected void onCreate(Bundle savedInstanceState) {
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14
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+
//略
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15
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+
adapter = new RecyclerViewAdapter(noteManager.getNoteItems());
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16
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+
adapter.setOnDeleteListener(view -> {
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17
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+
DialogFragmentCheckingDelete dialogFragment = new DialogFragmentCheckingDelete();
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18
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+
dialogFragment.show(getSupportFragmentManager(), "DialogFragmentCheckingDelete");
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19
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+
});
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20
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+
rvNote.setAdapter(adapter);
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21
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+
//略
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22
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+
}
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23
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}
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24
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```
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25
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+
```java
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26
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+
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.RecyclerListViewHolder> {
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27
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+
//略
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28
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+
private View.OnClickListener deleteListener;
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29
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+
void setOnDeleteListener(View.OnClickListener deleteListener) {
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30
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this.deleteListener = deleteListener;
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31
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+
}
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32
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+
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33
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+
@Override
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34
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+
public void onBindViewHolder(@NonNull RecyclerListViewHolder holder, int position) {
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35
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+
holder._tvTitle.setText(titles.get(position));
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36
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+
holder._tvText.setText(texts.get(position));
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37
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+
holder._iBtnDeleteL.setOnClickListener(deleteListener);
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38
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+
}
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39
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+
//略
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|
40
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+
```
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