Android 채팅창 구현을 해보려고 시도하면서 SoftKeyboard 가 활성화되면 Recyclerview 입력한 내용이 자동으로 스크롤 되는 기능이 제공되어야 할 거 같아서 EditText 터치이벤트 등으로 시도를 해보왔으나 실패!!!
http://givenjazz.tistory.com/54 에 나온 코드가 내가 원하는 코드였다.
이 코드 덕분에 코드가 좀 더 정교해지고 있는거 같다.
import android.app.Activity;
import android.content.Context;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.view.View;
public class SoftKeyboardDectectorView extends View {
// 출처 : http://givenjazz.tistory.com/54
private boolean mShownKeyboard;
private OnShownKeyboardListener mOnShownSoftKeyboard;
private OnHiddenKeyboardListener onHiddenSoftKeyboard;
public SoftKeyboardDectectorView(Context context) {
this(context, null);
}
public SoftKeyboardDectectorView(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
Activity activity = (Activity)getContext();
Rect rect = new Rect();
activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);
int statusBarHeight = rect.top;
int screenHeight = activity.getWindowManager().getDefaultDisplay().getHeight();
int diffHeight = (screenHeight - statusBarHeight) - h;
if (diffHeight > 100 && !mShownKeyboard) { // 모든 키보드는 100px보다 크다고 가정
mShownKeyboard = true;
onShownSoftKeyboard();
} else if (diffHeight < 100 && mShownKeyboard) {
mShownKeyboard = false;
onHiddenSoftKeyboard();
}
super.onSizeChanged(w, h, oldw, oldh);
}
public void onHiddenSoftKeyboard() {
if (onHiddenSoftKeyboard != null)
onHiddenSoftKeyboard.onHiddenSoftKeyboard();
}
public void onShownSoftKeyboard() {
if (mOnShownSoftKeyboard != null)
mOnShownSoftKeyboard.onShowSoftKeyboard();
}
public void setOnShownKeyboard(OnShownKeyboardListener listener) {
mOnShownSoftKeyboard = listener;
}
public void setOnHiddenKeyboard(OnHiddenKeyboardListener listener) {
onHiddenSoftKeyboard = listener;
}
public interface OnShownKeyboardListener {
public void onShowSoftKeyboard();
}
public interface OnHiddenKeyboardListener {
public void onHiddenSoftKeyboard();
}
} |
사용법
public class ChatBoxActivity extends AppCompatActivity {
Context context;
public RecyclerView listView;
public ArrayList<Chat_Item> chatItemList = new ArrayList<>(); ;
RecyclerView.Adapter listViewAdapter;
RecyclerView.LayoutManager layoutManager;
public EditText editText;
public Button send ;
//declare socket object
private Socket socket;
public String Nickname;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chat_box);
context = this.getBaseContext();
editText = (EditText) findViewById(R.id.message) ;
send = (Button)findViewById(R.id.send);
// get the nickame of the user
SharedPreferences pref = getSharedPreferences("pref", Activity.MODE_PRIVATE);
String userNM = pref.getString("userNM", "");
String userID = pref.getString("userID", "");
Nickname = userNM +"("+userID+")";
final SoftKeyboardDectectorView softKeyboardDecector = new SoftKeyboardDectectorView(this);
addContentView(softKeyboardDecector, new FrameLayout.LayoutParams(-1, -1));
softKeyboardDecector.setOnShownKeyboard(new SoftKeyboardDectectorView.OnShownKeyboardListener() {
@Override
public void onShowSoftKeyboard() {
//키보드 등장할 때 채팅창 마지막 입력 내용을 바로 보이도록 처리
listView.scrollToPosition(chatItemList.size()-1);
}
});
try {
socket = IO.socket(Value.ChatLive); // 채팅서버 주소
socket.connect();
socket.emit("join", Nickname);
} catch (URISyntaxException e) {
e.printStackTrace();
}
// Adapter에 추가 데이터를 저장하기 위한 ArrayList
listView = (RecyclerView) findViewById(R.id.messagelist);
RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getApplicationContext());
listView.setLayoutManager(layoutManager);
listView.setItemAnimator(new DefaultItemAnimator());
listViewAdapter = new ListViewAdapter(chatItemList, this); // Adapter 생성
listView.setAdapter(listViewAdapter); // 어댑터를 리스트뷰에 세팅
}
} |
채팅 내용을 마지막으로 입력한 내용이 소트프키보드 입력창 위에 바로 보이도록 하는 코드다.
