[Android Studio] Chapter 6 직접 풀어보기

[직접 풀어보기]

 

6-1

XML

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">
        <Chronometer
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/chronometer1"
            android:format="예약에 걸린 시간 %s"
            android:gravity="center"
            android:textSize="20dp"
            android:background="#808080"/>

    </LinearLayout>
    <RadioGroup
        android:layout_height="wrap_content"
        android:layout_width="match_parent">
        <RadioButton
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/rdoCal"
            android:text="날짜 설정 (캘린더뷰)"/>
        <RadioButton
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/rdoTime"
            android:text="시간 설정"/>
    </RadioGroup>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:layout_weight="1">
        <FrameLayout
            android:layout_height="wrap_content"
            android:layout_width="match_parent">
            <DatePicker
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/datePicker1"
                android:showWeekNumber="false"/>
            <TimePicker
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/timePicker1"/>
        </FrameLayout>
    </LinearLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:background="#808080">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/tvYear"
            android:text="0000"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="년"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/tvMonth"
            android:text="00"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="월"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/tvDay"
            android:text="00"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="일"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/tvHour"
            android:text="00"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="시"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/tvMinute"
            android:text="00"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="분 예약됨"/>
    </LinearLayout>

</LinearLayout>

 

JAVA

package com.cookandroid.a6_1;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Color;
import android.os.Bundle;
import android.os.SystemClock;
import android.view.View;
import android.widget.Button;
import android.widget.CalendarView;
import android.widget.Chronometer;
import android.widget.DatePicker;
import android.widget.RadioButton;
import android.widget.TextView;
import android.widget.TimePicker;

public class MainActivity extends AppCompatActivity {
    Chronometer chrono;
    RadioButton rdoCal, rdoTime;
    DatePicker datePicker;
    TimePicker tPicker;
    TextView tvYear, tvMonth, tvDay, tvHour, tvMinute;
    int selectYear, selectMonth, selectDay;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        setTitle("시간 예약");

        chrono = (Chronometer) findViewById(R.id.chronometer1);

        rdoCal = (RadioButton) findViewById(R.id.rdoCal);
        rdoTime = (RadioButton) findViewById(R.id.rdoTime);

        tPicker = (TimePicker) findViewById(R.id.timePicker1);
        datePicker = (DatePicker) findViewById(R.id.datePicker1);

        tvYear = (TextView) findViewById(R.id.tvYear);
        tvMonth = (TextView) findViewById(R.id.tvMonth);
        tvDay = (TextView) findViewById(R.id.tvDay);
        tvHour = (TextView) findViewById(R.id.tvHour);
        tvMinute = (TextView) findViewById(R.id.tvMinute);

        tPicker.setVisibility(View.INVISIBLE);
        datePicker.setVisibility(View.INVISIBLE);

        rdoCal.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                tPicker.setVisibility(View.INVISIBLE);
                datePicker.setVisibility(View.VISIBLE);
            }
        });

        rdoTime.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                tPicker.setVisibility(View.VISIBLE);
                datePicker.setVisibility(View.INVISIBLE);
            }
        });

        chrono.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                chrono.setBase(SystemClock.elapsedRealtime());
                chrono.start();
                chrono.setTextColor(Color.RED);

                rdoCal.setVisibility(View.VISIBLE);
                rdoTime.setVisibility(View.VISIBLE);

            }
        });

        tvYear.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View v) {
                chrono.stop();
                chrono.setTextColor(Color.BLUE);

                tvYear.setText(Integer.toString(datePicker.getYear()));
                tvMonth.setText(Integer.toString(datePicker.getMonth()+1));
                tvDay.setText(Integer.toString(datePicker.getDayOfMonth()));

                tvHour.setText(Integer.toString(tPicker.getCurrentHour()));
                tvMinute.setText(Integer.toString(tPicker.getCurrentMinute()));

                rdoCal.setVisibility(View.INVISIBLE);
                rdoTime.setVisibility(View.INVISIBLE);
                tPicker.setVisibility(View.INVISIBLE);
                datePicker.setVisibility(View.INVISIBLE);
                return false;
            }
        });


    }
}

 

6-2

고양이들이 다 너무 귀여워서 특별히 gif로!

XML

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/btnStart"
            android:text="  사진보기 시작  "/>
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/btnStop"
            android:text="  사진보기 정지  "/>
    </LinearLayout>
    <ViewFlipper
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/viewFlipper">
        <ImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:src="@drawable/img1"/>
        <ImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:src="@drawable/img2"/>
        <ImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:src="@drawable/img3"/>
        <ImageView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:src="@drawable/img4"/>

    </ViewFlipper>

</LinearLayout>

 

JAVA

package com.cookandroid.a6_2;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ViewFlipper;

public class MainActivity extends AppCompatActivity {

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

        Button btnStart, btnStop;
        final ViewFlipper viewFlipper;

        btnStart = (Button) findViewById(R.id.btnStart);
        btnStop = (Button) findViewById(R.id.btnStop);
        viewFlipper= (ViewFlipper) findViewById(R.id.viewFlipper);

        btnStart.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                viewFlipper.setFlipInterval(1000);
                viewFlipper.startFlipping();
            }
        });

        btnStop.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                viewFlipper.stopFlipping();
            }
        });
    }
}

 

6-3

3번 때문에 거의 1시간동안 삽질했는데 원인이 이미지였다는 사실... 결국 이미지 바꾸고 프로젝트 새로 만들어서 붙여넣었더니 되더랍니다... 내 1시간...

XML

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@android:id/tabhost">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <FrameLayout
            android:layout_weight="1"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@android:id/tabcontent"
            >
            <ImageView
                android:id="@+id/dog"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:src="@drawable/dog"/>
            <ImageView
                android:id="@+id/cat"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:src="@drawable/cat"/>
            <ImageView
                android:id="@+id/rabbit"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:src="@drawable/rabbit"/>
            <ImageView
                android:id="@+id/horse"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:src="@drawable/horse"/>

        </FrameLayout>
        <TabWidget
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@android:id/tabs"
            android:background="#A4A4A4"/>
    </LinearLayout>

</TabHost>

 

JAVA

package com.cookandroid.test6;

import androidx.appcompat.app.AppCompatActivity;

import android.app.TabActivity;
import android.os.Bundle;
import android.widget.TabHost;
@SuppressWarnings("deprecation")
public class MainActivity extends TabActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        TabHost tabHost=getTabHost();

        TabHost.TabSpec tabSpecDog=tabHost.newTabSpec("dog").setIndicator("강아지");
        tabSpecDog.setContent(R.id.dog);
        tabHost.addTab(tabSpecDog);

        TabHost.TabSpec tabSpecCat=tabHost.newTabSpec("cat").setIndicator("고양이");
        tabSpecCat.setContent(R.id.cat);
        tabHost.addTab(tabSpecCat);

        TabHost.TabSpec tabSpecRabbit=tabHost.newTabSpec("rabbit").setIndicator("토끼");
        tabSpecRabbit.setContent(R.id.rabbit);
        tabHost.addTab(tabSpecRabbit);

        TabHost.TabSpec tabSpecHorse=tabHost.newTabSpec("horse").setIndicator("말");
        tabSpecHorse.setContent(R.id.horse);
        tabHost.addTab(tabSpecHorse);

        tabHost.setCurrentTab(0);
    }
}