학원 29일차 복습(4/23)

2018. 4. 23. 20:27

이론

스프링 서버 3/28 소스 활용

drawable v24는 24버전부터 적용됨

핸들러 객체에 메시지를 보내기

1.주기적으로 반복작업을 할 필요가 있을때 핸들러를 사용한다.

2.스레드간의 메세지 전달이 필요할 때도 핸들러 사용

3.내부적으로는 핸들러도 하나의 스레드이다.

View.INVISIBLE : 단순하게 사라지는 것

, GONE, : 완전히 없어지는 것

VISIBLE : 보여지는 것

실습

ex1_thread.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Thread Test"
        />
    <TextView
        android:id="@+id/ex3_for"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Thread Test"
        />
    <TextView
        android:id="@+id/ex3_back"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Thread Test"
        android:textSize="20dp"
        android:gravity="center"
        />
    <Button
        android:id="@+id/ex3_btn1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Click!"
        />

</LinearLayout>

ex2_chat.xml

</LinearLayout>

ex2_post.xml

ex2_progressbar.xml

activity_chatitem.xml

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="kr.or.kosta.myand0423.MainActivity"
    >

</LinearLayout>
        </FrameLayout>
    </LinearLayout>
</android.support.constraint.ConstraintLayout>

Ex1_Thread.java

package kr.or.kosta.myand0423;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class Ex1_Thread extends AppCompatActivity {
    private TextView txt1,txt2;
    private Button btn1;
    private int fnum,bnum;

@Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.ex1_thread);
        txt1 = findViewById(R.id.ex3_for);
        txt2 = findViewById(R.id.ex3_back);
        btn1 = findViewById(R.id.ex3_btn1);
        btn1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                txt1.setText("For:"+fnum++);
               // txt2.setText("Back:"+bnum);
            }
        });
       /*
        MyThread myT = new MyThread();
        myT.setDaemon(true);
        myT.start();
        */
        /*
        핸들러 객체에 메시지를 보내기
        1.주기적으로 반복작업을 할 필요가 있을때 핸들러를 사용한다.
        2.스레드간의 메세지 전달이 필요할 때도 핸들러 사용
        3.내부적으로는 핸들러도 하나의 스레드이다.
         */
        handler.sendEmptyMessageDelayed(0,1000);
    }
    //------------------- 1.Thread 예제
    public class MyThread extends Thread{
        @Override
        public void run() {
            while (true){
                try {
                    bnum++;
                    txt2.setText("BackNum:"+bnum);
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }

}
    }

//--------------------2.Handler를 멤버 내부클래스로 예제에서 추가한다.
    //setTime() : 자바스크립트와 유사한 기능
    Handler handler = new Handler(){
        @Override
        public void handleMessage(Message msg) {
            if(msg.what == 0){
                bnum++;
                txt2.setText("Back:"+bnum);
                //자기 자신의 객체를 재귀 호출 해서 무한 반복이 되도록 설정
                //호출 시 인자, 메시지 번호, 지연시간 인자 1/1000초
                handler.sendEmptyMessageDelayed(0,1000);
            }
        }
    };
}

Ex2_PostProgress.java

package kr.or.kosta.myand0423;

import android.app.ProgressDialog;
import android.os.Bundle;
import android.os.Handler;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;

public class Ex2_PostProgress extends AppCompatActivity {
    private Button btnDoWork;
    private ProgressDialog progressBar;
    private int progressBarStatus =0;
    private Handler progressBarHandler = new Handler();

@Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.ex2_post);
        btnDoWork = findViewById(R.id.button1);
        btnDoWork.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) { //Start Event onClick
                progressBar = new ProgressDialog(v.getContext()); //Progress생성
                progressBar.setCancelable(true);
                progressBar.setMessage("Working........");
                progressBar.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
                progressBar.setProgress(0);
                progressBar.setMax(100);
                progressBar.show();
                progressBarStatus =0;
                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        while (progressBarStatus <100){
                            progressBarStatus = doSomeTask();
                            try {
                                Thread.sleep(1000);
                            } catch (InterruptedException e) {
                                e.printStackTrace();
                            }
                            progressBarHandler.post(new Runnable(){
                                @Override
                                public void run() {
                                    progressBar.setProgress(progressBarStatus);
                                }
                            });
                        }
                    }
                }).start();

}
        });
    }
    // doSomeTask & Set Status Progress Bar
    public int doSomeTask(){
        progressBarStatus++;
        if(progressBarStatus<100){
            return progressBarStatus;
        }
        //When Finish
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        progressBar.dismiss();
        return 100;
    }

}

Ex2_Progress.java

package kr.or.kosta.myand0423;

import android.os.Bundle;
import android.os.Handler;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.TextView;

public class Ex2_Progress extends AppCompatActivity {
    private ProgressBar progressBar;
    private int progressBarStatus = 0;
    private Handler progressBarHandler = new Handler();
    private TextView textView;

@Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.ex2_progressbar);
        progressBar = findViewById(R.id.progressBar);
        textView = findViewById(R.id.textView);

}
    public int doSomeTask(){
        progressBarStatus++;
        if(progressBarStatus<100){
            return progressBarStatus;
        }
        //When Finish
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return 100;
    }
    public void startProgress(View v){
        new Thread(new Runnable() {
            @Override
            public void run() {
                while (progressBarStatus <100){
                    progressBarStatus = doSomeTask();
                    try {
                        Thread.sleep(300);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    progressBarHandler.post(new Runnable(){
                        @Override
                        public void run() {
                            //안드로이드 UI에 스레드의 값을 적용!
                            progressBar.setProgress(progressBarStatus);
                            textView.setText(progressBarStatus+"/"+progressBar.getMax());
                        }
                    });
                }
            }
        }).start();
    }
}

Ex3_Chat.java

package kr.or.kosta.myand0423;

import android.graphics.Color;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.StrictMode;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;

import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;

public class Ex3_Chat extends AppCompatActivity {
    //리니어,버튼,에디트 ... UI
    private EditText chatEdit;
    private LinearLayout chatContly;
    //Client
    private Socket s;
    private BufferedReader in;
    private PrintWriter out;
    private Handler networkHandler;

@Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.ex2_chat);
        //handler를 생성
        networkHandler = new Handler();
        //소켓생성---------------------
        if(Build.VERSION.SDK_INT>9){
            //StrictMode
            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
            StrictMode.setThreadPolicy(policy);
        }
        try {
            s = new Socket("192.168.0.118",9999);
        } catch (IOException e) {
            e.printStackTrace();
        }
        //스레드 시작
        play();
        chatEdit = findViewById(R.id.chatEdit);
        chatContly = findViewById(R.id.chatCntLy);
    }
    //스레드를 정의-
    private void play(){
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    in = new BufferedReader(new InputStreamReader(s.getInputStream(),"euc-kr"));
                    while (true){
                        final String msg = in.readLine(); //서버로부터 메세지를 받을 스트림!
                        networkHandler.post(new Runnable() {
                            @Override
                            public void run() {
                                TextView tv =new TextView(Ex3_Chat.this);
                                tv.setTextSize(30.0f);
                                tv.setTextColor(Color.GREEN);
                                tv.setText(msg);
                                chatContly.addView(tv);
                            }
                        });
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }
    public void ex2_click(View v){
        String sendMsg = chatEdit.getText().toString().trim();
        try {
            StringBuffer sMsg = new StringBuffer();
            //talk/nickname/msg/null/null
            sMsg.append("talk/*").append("xman/*").append(sendMsg).append("/null/null");
            //sMsg.append(sendMsg);
            out = new PrintWriter(new BufferedOutputStream(s.getOutputStream()), true);
            out.println(sMsg.toString());
        }catch (IOException e){
            e.printStackTrace();
        }
    }

}

CustomAdapter.java

package kr.or.kosta.myand0423;

import android.content.Context;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;

import java.util.ArrayList;

public class CustomAdapter extends BaseAdapter {
    //ListContents가 하나씩 저장되어야 할 ArrayList선언
    //->리스트뷰의 구성
    private ArrayList<ListContents> m_list;
    public CustomAdapter(){
        m_list = new ArrayList<>();
    }
    //방향을 설정할 내부클래스 정의
    public class ListContents{
        String msg;
        int type;
        public ListContents(String msg, int type){
            this.msg=msg;
            this.type=type;
        }
    }
    //외부에서 아이템 추가 요청시 호출되는 메서드
    public void add(String _msg,int _type){
        m_list.add(new ListContents(_msg,_type));
    }
    //삭제 요청시 호출되는 메서드
    public void remove(int _position){
        m_list.remove(_position);
    }

//달빅에 의해서 호출!
    @Override
    public int getCount() {
        return m_list.size();
    }
        //항목값을 position으로 받아서 list에서 가져오도록 설정
    @Override
    public Object getItem(int position) {
        return m_list.get(position);
    }
    @Override
    public long getItemId(int position) {
        return position;
    }

@Override
    public View getView(int position, View convertView, ViewGroup parent) {
        final int pos = position;
        final Context context = parent.getContext();
        TextView m_TextView = null;
        LinearLayout layout = null;
        View viewRight = null;
        View viewLeft =null;
        CustomHolder holder = null;
        if(convertView == null){
            //view가 null일 경우 커스텀 레이아웃을 얻어
            LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(R.layout.activity_chatitem,parent,false);
            layout =  convertView.findViewById(R.id.layout);
            m_TextView =  convertView.findViewById(R.id.text1);
            viewRight =convertView.findViewById(R.id.imageViewright);
            viewLeft = convertView.findViewById(R.id.imageViewleft);
            //CustomHolder에 읽어온 자원을 등록
            holder = new CustomHolder();
            holder.m_TextView=m_TextView;
            holder.layout=layout;
            holder.viewLeft=viewLeft;
            holder.viewRight=viewRight;
            convertView.setTag(holder);
        }else {
            holder = (CustomHolder) convertView.getTag();
            m_TextView = holder.m_TextView;
            layout = holder.layout;
            viewLeft = holder.viewLeft;
            viewRight = holder.viewRight;
        }
        //사용
        m_TextView.setText(m_list.get(position).msg);
        //방향에 따른 View의 배치......!
        if(m_list.get(position).type ==0){
            m_TextView.setBackgroundResource(R.drawable.inbox2);
            layout.setGravity(Gravity.LEFT);
            //View.INVISIBLE : 단순하게 사라지는 것
            // , GONE, : 완전히 없어지는 것
            // VISIBLE : 보여지는 것
            viewRight.setVisibility(View.GONE);
            viewLeft.setVisibility(View.GONE);
        }else if(m_list.get(position).type ==1){
            m_TextView.setBackgroundResource(R.drawable.outbox2);
            layout.setGravity(Gravity.RIGHT);
            viewRight.setVisibility(View.GONE);
            viewLeft.setVisibility(View.GONE);
        }else if(m_list.get(position).type ==2){
            m_TextView.setBackgroundResource(R.drawable.datebg);
            layout.setGravity(Gravity.CENTER);
            viewRight.setVisibility(View.VISIBLE);
            viewLeft.setVisibility(View.VISIBLE);
        }
        return convertView;
    }

private class CustomHolder{
        TextView m_TextView;
        LinearLayout layout;
        View viewRight;
        View viewLeft;
    }

}

Ex2_ListView.java

package kr.or.kosta.myand0423;

import android.graphics.Color;
import android.os.Bundle;
import android.os.Handler;
import android.os.StrictMode;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;

import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;

public class Ex2_ListView extends AppCompatActivity {
    //리스트뷰를 선언
    private ListView m_ListView;
    private CustomAdapter m_Adapter;
    // 입력받을 메세지 객체를 선언
    private EditText editText;
    //Client
    private Socket s;
    private BufferedReader in;
    private PrintWriter out;
    private Handler networkHandler;

@Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        editText =findViewById(R.id.editText1);
        //CustomAdapter , ListView 생성
        m_Adapter = new CustomAdapter();
        m_ListView = findViewById(R.id.listView1);
        //리스트뷰에다가 데이터를 가진 CustomAdapter 배치!
        m_ListView.setAdapter(m_Adapter);

networkHandler = new Handler();

//가상데이터 만들어서 테스트
       // m_Adapter.add("hihi0!",0);
        //m_Adapter.add("hihi1!",1);
        //m_Adapter.add("hihi2!",2);
        m_ListView.setTranscriptMode(ListView.TRANSCRIPT_MODE_ALWAYS_SCROLL);

StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);
        try {
            s = new Socket("192.168.0.118",9999);
        } catch (IOException e) {
            e.printStackTrace();
        }
       /*
       findViewById(R.id.button1).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String inputVal = editText.getText().toString();
                editText.setText("");
                refresh(inputVal,0);
            }
        });
        */
        play();
        findViewById(R.id.button2).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String inputVal = editText.getText().toString();
                editText.setText("");
                refresh(inputVal,1);
                try{
                    out = new PrintWriter(new BufferedOutputStream(s.getOutputStream()), true);
                    out.println(inputVal);
                    editText.setText("");
                }catch (IOException e){
                    e.printStackTrace();
                }
            }
        });
    }

public void refresh(String inputValue, int _str){
        m_Adapter.add(inputValue,_str);
        m_Adapter.notifyDataSetChanged();
    }
    private void play(){
        new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    in = new BufferedReader(new InputStreamReader(s.getInputStream(),"euc-kr"));
                    while (true){
                        final String msg = in.readLine(); //서버로부터 메세지를 받을 스트림!
                        networkHandler.post(new Runnable() {
                            @Override
                            public void run() {
                                Log.d("TAG",msg);
                                refresh(msg,0);
                            }
                        });
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }).start();
    }

}

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