안드로이드 숙제

메인

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package com.example.administrator.homework;

 

import android.annotation.SuppressLint;

import android.content.Intent;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.text.Layout;

import android.util.Log;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.EditText;

import android.widget.LinearLayout;

import android.widget.RelativeLayout;

import android.widget.TextView;

 

public class MainActivity extends AppCompatActivity implements OnClickListener {

    TextView txt1;

    TextView txt2;

    TextView txt3;

    RelativeLayout layout1, layout2, layout3;

    EditText edit1;

    EditText edit2;

    EditText edit3;

 

    @SuppressLint("WrongViewCast")

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        txt1 = (TextView) findViewById(R.id.txt1);

        txt2 = (TextView) findViewById(R.id.txt2);

        txt3 = (TextView) findViewById(R.id.txt3);

 

        edit1 = (EditText) findViewById(R.id.edit1);

        edit2 = (EditText) findViewById(R.id.edit2);

        edit3 = (EditText) findViewById(R.id.edit3);

 

        Button button1 = (Button) findViewById(R.id.button1);

        button1.setOnClickListener(this);

        Button button2 = (Button) findViewById(R.id.button2);

        button2.setOnClickListener(this);

        Button button3 = (Button) findViewById(R.id.button3);

        button3.setOnClickListener(this);

        Button resultbt = (Button) findViewById(R.id.resultbt);

        button3.setOnClickListener(this);

 

        layout1 = (RelativeLayout) findViewById(R.id.layout1);

        layout2 = (RelativeLayout) findViewById(R.id.layout2);

        layout3 = (RelativeLayout) findViewById(R.id.layout3);

    }

 

    @Override

    public void onClick(View v) {

//        red.setVisibility(View.INVISIBLE);

//        green.setVisibility(View.VISIBLE);

        String a = edit1.getText().toString();

        String b = edit2.getText().toString();

        int result;

 

        txt1.setText("뭐가 나올까?");

 

        if (v.getId() == R.id.button1) {

            layout1.setVisibility(View.VISIBLE);

            layout2.setVisibility(View.INVISIBLE);

            layout3.setVisibility(View.INVISIBLE);

 

            txt1.setText("구구단");

            if (v.getId() == R.id.resultbt||edit2.equals("+")) {

                a = edit1.getText().toString();

                b = edit3.getText().toString();

                result = Integer.parseInt(a) * Integer.parseInt(b);

                txt1.setText(result);

                }

 

            } else if (v.getId() == R.id.button2) {

                layout1.setVisibility(View.INVISIBLE);

                layout2.setVisibility(View.VISIBLE);

                layout3.setVisibility(View.INVISIBLE);

 

                txt2.setText("6월달력");

 

 

            } else if (v.getId() == R.id.button3) {

                layout1.setVisibility(View.INVISIBLE);

                layout2.setVisibility(View.INVISIBLE);

                layout3.setVisibility(View.VISIBLE);

 

                txt3.setText("로또");

 

            }

 

        }

    }

 

 

 

Colored by Color Scripter

cs

 

    

<?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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="10dp"
    tools:context=".MainActivity">
 
    <Button
        android:id="@+id/button1"
        android:layout_width="70dp"
        android:layout_height="50dp"
        android:background="#0000ff"
        android:text="Button"
        android:textColor="#FFFF00"
        />
 
    <Button

        android:id="@+id/button2"
        android:layout_width="90dp"
        android:layout_height="50dp"
        android:layout_marginHorizontal="20dp"
        android:layout_toRightOf="@id/button1"
        android:background="#00FA9A"
        android:text="Button"
        android:textColor="#FFFF00" />
 
    <Button
        android:id="@+id/button3"
        android:layout_width="110dp"
        android:layout_height="50dp"
        android:layout_toRightOf="@id/button2"
        android:background="#800080"
        android:text="Button"
        android:textColor="#FFFF00" />
 
    <RelativeLayout
        android:id="@+id/layout1"
        android:visibility="visible"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/button1"
        android:background="#FFDEAD">
 
        <EditText
            android:id="@+id/edit1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:hint="숫자"
            android:textSize="50dp"
            android:layout_toLeftOf="@+id/edit2"
            />
 
        <EditText
            android:id="@+id/edit2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:hint="기호"
            android:textSize="50dp"
            android:layout_centerHorizontal="true"/>
 
        <EditText
            android:id="@+id/edit3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_toRightOf="@+id/edit2"
            android:textSize="50dp"
            android:hint="숫자"/>
 
 
        <TextView
            android:id="@+id/txt1"
            android:layout_width="330dp"
            android:layout_height="50dp"
            android:textColor="#ffffff"
            android:layout_alignParentBottom="true"
            android:text="계산할 숫자를 입력하세요."
            android:textSize="30dp"
            />
 
    </RelativeLayout>
 
    <RelativeLayout
        android:id="@+id/layout2"
        android:visibility="invisible"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/button1"
        android:background="#00FA9A">
 
        <TextView
            android:id="@+id/txt2"
            android:layout_width="150dp"
            android:layout_height="50dp"
            android:layout_alignParentBottom="true"
            android:text="TextView"
            android:textSize="30dp" />
 
    </RelativeLayout>
 
    <RelativeLayout
        android:id="@+id/layout3"
        android:visibility="invisible"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/button1"
        android:background="#800080">
 
        <TextView
            android:id="@+id/txt3"
            android:layout_width="150dp"
            android:layout_height="50dp"
            android:layout_alignParentBottom="true"
            android:text="TextView"
            android:textSize="30dp" />
 
    </RelativeLayout>
</RelativeLayout>
 

마진은 나와 부모의 사이를 나타내는것

패딩은 나와 자식사이를 나타내는것이다.

숙제는 상단에 세개의 버튼을 놓고 하나 클릭시 다른 화면을 출력하세요.

첫번째는 달력 구구단 등을 출력해 주세요.