RecyclerviewAdapter 에서 Interface로 Activity 로 값을 넘기는 방법에 대한 코드와 Checkbox 에서 전체 선택/해제를 위해 별도의 RelativeLayout 으로 전체선택, 취소, 전송 등의 버튼을 처리하도록 한다.
구현은 전체를 다 구현한 것이 아니라 핵심사항만 구현했지만, 이 정도로도 좋은 코드라고 본다.
MainActivity.java
public class MainActivity extends AppCompatActivity implements RecyclerViewAdapter.OnItemClickListener {
private final String TAG = this.getClass().getSimpleName();
Context context;
public ArrayList<Address_Item> addressItemList = new ArrayList<>(); // 서버 원본 데이터 리스트
private RecyclerView mRecyclerView;
private RecyclerViewAdapter mAdapter;
private SearchView editsearch;
RemoteService remoteService;
public static RelativeLayout relative2;
public static boolean isCheckFlag = false;
public CheckBox checkAll;
private BackPressHandler backPressHandler;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
context = MainActivity.this;
backPressHandler = new BackPressHandler(this);
initView();
}
private void initView() {
createAddressList(); // 서버 데이터 가져오기
buildRecyclerView();
setButtons();
}
private void setButtons(){
isCheckFlag = false;
// Relative layout 정의
relative2 = findViewById(R.id.list_view_relative2);
if (isCheckFlag == false) {
relative2.setVisibility(View.GONE);
} else if (isCheckFlag == true) {
relative2.setVisibility(View.VISIBLE);
}
// all checkbox
checkAll = findViewById(R.id.lv_checkbox_all);
checkAll.setOnCheckedChangeListener((buttonView, isChecked) -> {
if (checkAll.isChecked() == true) {
mAdapter.selectAll();
mAdapter.notifyDataSetChanged();
} else {
mAdapter.unselectall();
mAdapter.notifyDataSetChanged();
}
});
Button cancel = findViewById(R.id.btn_cancel);
cancel.setOnClickListener(v -> {
isCheckFlag = false;
relative2.setVisibility(View.GONE);
mAdapter.unselectall();
checkAll.setChecked(false); // 전체 선택 체크박스 해제
mAdapter.notifyDataSetChanged();
});
Button send = findViewById(R.id.btn_send);
final String[] listview_items = {"그룹문자 보내기", "연락처 저장"};
final AlertDialog.Builder items_builder = new AlertDialog.Builder(MainActivity.this);
items_builder.setTitle("해당 작업을 선택하세요");
items_builder.setItems(listview_items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case 0:
Toast.makeText(getApplicationContext(), "그룹문자 보내기 구현하세요.", Toast.LENGTH_SHORT).show();
break;
case 1:
Toast.makeText(getApplicationContext(), "연락처 저장을 구현하세요.", Toast.LENGTH_SHORT).show();
break;
}
}
});
items_builder.create();
send.setOnClickListener(v ->
items_builder.show());
}
private void buildRecyclerView(){
mRecyclerView = findViewById(R.id.address_listview);
mRecyclerView.setHasFixedSize(true);
LinearLayoutManager manager = new LinearLayoutManager(context);
mAdapter = new RecyclerViewAdapter(context,addressItemList);
DividerItemDecoration decoration = new DividerItemDecoration(context,manager.getOrientation());
mRecyclerView.addItemDecoration(decoration);
mRecyclerView.setLayoutManager(manager);
mRecyclerView.setAdapter(mAdapter);
mAdapter.setOnItemSelectClickListener(this);
}
private void createAddressList() {
// 서버 데이터 가져오기 구현 메서드는 https://link2me.tistory.com/1850 참조
}
@Override
public void onBackPressed() {
backPressHandler.onBackPressed();
}
@Override
public void onItemClicked(View view, Address_Item item, int position) {
Toast.makeText(context, "position : "+position + " clieck item name : "+item.getUserNM(), Toast.LENGTH_SHORT).show();
}
}
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RecyclerViewAdapter.java
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {
private final String TAG = this.getClass().getSimpleName();
Context context;
private List<Address_Item> rvItemList;
// 인터페이스 선언 -------------------------------------------------------------
private OnItemClickListener mListener;
public interface OnItemClickListener {
void onItemClicked(View view, Address_Item item, int position);
}
public void setOnItemSelectClickListener(OnItemClickListener listener){
mListener = listener;
}
// 인터페이스 ----------------------------------------------------------------
public class ViewHolder extends RecyclerView.ViewHolder{
LinearLayout child_layout;
ImageView photo_Image;
TextView tv_name;
TextView tv_mobileNO;
TextView tv_officeNO;
ImageView call_btn;
CheckBox cbSelect;
public ViewHolder(@NonNull View itemView) {
super(itemView);
child_layout = itemView.findViewById(R.id.child_layout);
photo_Image = itemView.findViewById(R.id.profile_Image);
tv_name = itemView.findViewById(R.id.child_name);
tv_mobileNO = itemView.findViewById(R.id.child_mobileNO);
tv_officeNO = itemView.findViewById(R.id.child_officeNO);
call_btn = itemView.findViewById(R.id.call_btn);
cbSelect = itemView.findViewById(R.id.listcell_checkbox);
}
}
public RecyclerViewAdapter(Context context, List<Address_Item> itemList) {
this.context = context;
rvItemList = itemList;
}
public void selectAll(){ // checkbox 전체 선택
for(int i=0;i < rvItemList.size();i++){
rvItemList.get(i).setCheckBoxState(true);
}
notifyDataSetChanged();
}
public void unselectall(){ // checkbox 전체 해제
for(int i=0;i < rvItemList.size();i++){
rvItemList.get(i).setCheckBoxState(false);
}
notifyDataSetChanged();
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.address_item,parent,false);
ViewHolder holder = new ViewHolder(view);
return holder;
}
@Override
public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
Log.d(TAG,"onBindViewHolder: called."); // 실제로 데이터를 표시하는 부분
Address_Item currentItem = rvItemList.get(position);
String photoURL = Value.IPADDRESS + "photos/" + currentItem.getPhoto();
if(photoURL.contains("null")){
Glide.with(context).asBitmap().load(R.drawable.photo_base).into(holder.photo_Image);
} else {
Glide.with(context).asBitmap().load(photoURL).into(holder.photo_Image);
}
holder.tv_name.setText(currentItem.getUserNM());
holder.tv_mobileNO.setText(PhoneNumberUtils.formatNumber(currentItem.getMobileNO()));
holder.tv_officeNO.setText(PhoneNumberUtils.formatNumber(currentItem.getTelNO()));
holder.photo_Image.setOnClickListener(view1 -> {
if(mListener != null){
mListener.onItemClicked(view1,currentItem,position);
}
});
holder.call_btn.setOnClickListener(view -> {
Toast.makeText(context, "전화걸기 또는 문자 보내기를 할 수 있어요.", Toast.LENGTH_SHORT).show();
});
if (isCheckFlag == false) {
holder.call_btn.setVisibility(View.VISIBLE);
holder.call_btn.setOnClickListener(view -> builder.show());
holder.cbSelect.setVisibility(View.GONE);
holder.child_layout.setOnClickListener(view ->
Toast.makeText(context, "상세보기를 눌렀습니다 ===" + currentItem.getUid(), Toast.LENGTH_SHORT).show());
holder.child_layout.setOnLongClickListener(v -> {
isCheckFlag = true;
relative2.setVisibility(View.VISIBLE);
notifyDataSetChanged();
return true;
});
} else {
holder.call_btn.setVisibility(View.GONE);
holder.cbSelect.setVisibility(View.VISIBLE);
holder.cbSelect.setTag(position); // This line is important.
// 체크 박스 클릭하면 CheckBoxState 에 반영한다. setOnCheckedChangeListener 대신 사용
holder.cbSelect.setOnClickListener(v -> {
if(rvItemList.get(position).getCheckBoxState() == true){
rvItemList.get(position).setCheckBoxState(false);
} else {
rvItemList.get(position).setCheckBoxState(true);
}
});
holder.child_layout.setOnClickListener(v -> {
if(holder.cbSelect.isChecked() == false){
holder.cbSelect.setChecked(true);
rvItemList.get(position).setCheckBoxState(true);
} else {
holder.cbSelect.setChecked(false);
rvItemList.get(position).setCheckBoxState(false);
}
});
}
// 재사용 문제 해결
if(rvItemList.get(position).getCheckBoxState() == true){
holder.cbSelect.setChecked(true);
} else {
holder.cbSelect.setChecked(false);
}
}
@Override
public int getItemCount() {
return rvItemList.size();
}
}
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Address_Item.kt
import android.os.Parcelable
import kotlinx.android.parcel.Parcelize
@Parcelize
data class Address_Item (
// 결과를 받을 모델 (ArrayList 에 저장하므로 val 로 선언하면 안된다)
var uid: String="",
var userNM: String="",
var mobileNO: String?=null,
var telNO: String?=null,
var photo: String?=null,
var checkBoxState: Boolean
): Parcelable
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address_item.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="1dp"
app:cardCornerRadius="1dp">
<LinearLayout
android:id="@+id/child_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="10dp"
android:paddingLeft="10dp"
android:paddingRight="10dp">
<ImageView
android:id="@+id/profile_Image"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_gravity="center"
android:layout_weight="1"
android:src="@mipmap/ic_launcher" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_weight="4"
android:orientation="vertical">
<TextView
android:id="@+id/child_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingBottom="2dip"
android:text="이름"
android:textSize="20sp"
android:textStyle="bold" />
<TextView
android:id="@+id/child_mobileNO"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="left"
android:text="휴대폰번호"
android:textStyle="bold" />
<TextView
android:id="@+id/child_officeNO"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="left"
android:text="사무실번호"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginLeft="5dp"
android:layout_weight="1"
android:orientation="vertical">
<ImageView
android:id="@+id/call_btn"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_gravity="center"
android:gravity="center_horizontal|center_vertical"
android:src="@drawable/btn_phone" />
</LinearLayout>
<CheckBox
android:id="@+id/listcell_checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:focusable="false" />
</LinearLayout>
</androidx.cardview.widget.CardView>
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