안드로이드 10진수를 2진수, 8진수, 16진수로 변환

10진수를 2진수, 8진수, 16진수로 변환

java)

package com.ghj.blog_028;
 
import android.net.ParseException;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
 
public class MainActivity extends AppCompatActivity {
 
    //UI
    EditText editNumber;
    TextView txt2Num;
    TextView txt8Num;
    TextView txt16Num;
 
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        //UI
        editNumber = (EditText)findViewById(R.id.editNumber);
        txt2Num = (TextView)findViewById(R.id.txt2Num);
        txt8Num = (TextView)findViewById(R.id.txt8Num);
        txt16Num = (TextView)findViewById(R.id.txt16Num);
    }
 
 
    //진법변환
    public void mOnTransfer(View v){
        String strnum = editNumber.getText().toString();
        int num = -1;
        try{
            num = Integer.parseInt(strnum);
 
            //10진수 -> 2진수
            String str2num = Integer.toBinaryString(num);
            txt2Num.setText(str2num);
 
            //10진수 -> 8진수
            String str8num = Integer.toOctalString(num);
            txt8Num.setText(str8num);
 
            //10진수 -> 16진수
            String str16num = Integer.toHexString(num);
            txt16Num.setText(str16num);
        }catch(ParseException e){
 
        }
    }
}
 

xml)

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
 
    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <EditText
            android:id="@+id/editNumber"
            android:inputType="numberDecimal"
            android:layout_weight="4"
            android:layout_width="0dp"
            android:layout_height="wrap_content" />
        <Button
            android:text="변환"
            android:layout_weight="1"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:onClick="mOnTransfer"/>
    </LinearLayout>
 
 
    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:text="2진수 : "
            android:textSize="24dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <TextView
            android:id="@+id/txt2Num"
            android:textSize="24dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>
 
    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:text="8진수 : "
            android:textSize="24dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <TextView
            android:id="@+id/txt8Num"
            android:textSize="24dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>
 
    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:text="16진수 : "
            android:textSize="24dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <TextView
            android:id="@+id/txt16Num"
            android:textSize="24dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>
 
</LinearLayout>
 

결과