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[동영상 강좌 ] 블스 - 제 13강 이벤트 & 리스너(Listener) -이벤트 -익명 리스너 , addTextChangedListener

2017-09-03 18:46:12 By 머나먼나라 0 964 댓글수 4 포스트 하기

4월 2024
일	월	화	수	목	금	토
	1	2	3	4	5	6
7	8	9	10	11	12	13
14	15	16	17	18	19	20
21	22	23	24	25	26	27
28	29	30

class MainActivity

package com.example.choi.mystudy13;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void onClick(View v){
        Intent intent=null;
        switch (v.getId()){

            case R.id.button1:
                intent=new Intent(MainActivity.this, SampleOneActivity.class);
                break;
            case R.id.button2:
                intent=new Intent(MainActivity.this, SampleTwoActivity.class);
                break;
            case R.id.button3:
                intent=new Intent(MainActivity.this, SampleThreeActivity.class);
                break;
        }
        startActivity(intent);
    }




}

R.layout.activity_main

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.choi.mystudy13.MainActivity">

    <Button
        android:text="터치 이벤트"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:id="@+id/button1"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:onClick="onClick"
        android:background="@android:color/holo_blue_dark"
        android:textColor="@android:color/background_light" />

    <Button
        android:text="리스너를 이용한 이벤트 처리"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/button1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="23dp"
        android:id="@+id/button2"
        android:background="@android:color/holo_green_dark"
        android:textColor="@android:color/background_light"
        android:onClick="onClick"
        />

    <Button
        android:text="다양한 뷰를 이용한 이벤트 처리"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/button2"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="30dp"
        android:id="@+id/button3"
        android:background="@android:color/holo_orange_dark"
        android:textColor="@android:color/background_light"
        android:onClick="onClick"
        />


</RelativeLayout>

class SampleOneActivity

package com.example.choi.mystudy13;

import android.content.Context;
import android.graphics.Canvas;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Toast;

public class SampleOneActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        CustomView customView =new CustomView(this);
        setContentView(customView);
    }



    public class CustomView extends View{

        private  Context mContext;

        public CustomView(Context context) {
            super(context);
            this.mContext=context;
        }

        @Override
        protected void onDraw(Canvas canvas) {
            super.onDraw(canvas);
        }

        @Override
        public boolean onTouchEvent(MotionEvent event) {
            if(event.getAction()==MotionEvent.ACTION_DOWN){
                Toast.makeText(this.mContext, "JUNHO - ACTION_DOWN",
                        Toast.LENGTH_SHORT
                        ).show();
                return true;
            }
            return false;
        }
    }




}

class SampleTwoActivity

package com.example.choi.mystudy13;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.RelativeLayout;
import android.widget.Toast;

public class SampleTwoActivity extends AppCompatActivity {

    RelativeLayout rl;

    Toast toast;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.sample_two);


        rl=(RelativeLayout)findViewById(R.id.sample_two);

        //짧은 클릭 익명리스너
        rl.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                tostShow("OnClick - 짧은 클릭");
            }
        });


        //길게 클릭
        rl.setOnLongClickListener(longClickListener);
    }


    View.OnLongClickListener longClickListener =new View.OnLongClickListener() {
        @Override
        public boolean onLongClick(View v) {

            tostShow("onLongClick - 긴 클릭");
            return false;
        }
    };



    private void tostShow(String message){

        if(toast==null){
            toast=Toast.makeText(SampleTwoActivity.this, message, Toast.LENGTH_SHORT) ;
        }else{
            toast.setText(message);
        }
        toast.show();
    }




}


R.layout.sample_two

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/sample_two"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.choi.mystudy13.SampleTwoActivity"
    >




</RelativeLayout>

class SampleThreeActivity

package com.example.choi.mystudy13;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.TextView;
import android.widget.Toast;

public class SampleThreeActivity extends AppCompatActivity {

    Toast toast;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.sample_three);


        TextView tv=(TextView)findViewById(R.id.tv);
        Button bt =(Button)findViewById(R.id.bt);
        ImageView iv =(ImageView)findViewById(R.id.iv);
        EditText et=(EditText)findViewById(R.id.et);
        SeekBar sb =(SeekBar)findViewById(R.id.sb);


        tv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                tostShow("텍스트 클릭 : setOnClickListener");
            }
        });


        bt.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                tostShow("버튼 길게 클릭  : setOnLongClickListener");
                return true;
            }
        });


        iv.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {

                tostShow("이미지 터치  : setOnTouchListener");
                return true;
            }
        });


        et.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
                tostShow("텍스트 체인지 : addTextChangedListener :beforeTextChanged " +s.toString());
            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                tostShow("텍스트 체인지 : addTextChangedListener :onTextChanged " +s.toString());
            }

            @Override
            public void afterTextChanged(Editable s) {
                tostShow("텍스트 체인지 : addTextChangedListener :afterTextChanged " +s.toString());
            }
        });


        sb.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {

            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {
                tostShow("시크바 : setOnSeekBarChangeListener :onStartTrackingTouch " +seekBar.getProgress());
            }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {

            }
        });

    }




    public void tostShow(String message){

        if(toast==null){
            toast=Toast.makeText(SampleThreeActivity.this, message, Toast.LENGTH_SHORT);
        }else{
            toast.setText(message);
        }
        toast.show();
    }




}

R.layout.sample_three

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:id="@+id/sample_three"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.choi.mystudy13.SampleThreeActivity">

    <TextView
        android:text="TextView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:id="@+id/tv"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:textSize="30sp"
        android:textStyle="normal|bold" />

    <Button
        android:text="Button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/tv"
        android:id="@+id/bt"
        android:textSize="14sp"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:srcCompat="@drawable/a1"
        android:id="@+id/iv"
        android:layout_below="@+id/bt"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true" />

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="textPersonName"
        android:ems="10"
        android:id="@+id/et"
        android:layout_below="@+id/iv"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:hint="input text"
        android:background="@android:color/holo_green_light"
        android:textSize="30sp" />

    <SeekBar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/et"
        android:layout_marginTop="13dp"
        android:id="@+id/sb"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true" />
</RelativeLayout>