Tap Titan2 계산기 모작

깃허브 주소

https://github.com/tehon/Coffeedroid/tree/master/Tab_cal

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화면 및 기능 

버튼 리스너랑 그리드 레이아웃 연습으로 

탭 타이탄2에 부가기능으로 있는 계산기를 따라 만들어보았다.

탭 타이탄2 정말 재미있는 게임이다. 

1때부터 열심히 하고 있는 게임..

비슷하게 만든 계산기

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코드

MainActivity.java

public class MainActivity extends AppCompatActivity {
  FormulaFactory f;

  // 계산중인걸 저장하는 공간을 만들어둔다.
  String saveTextInjava = "";
  String littlesaveTextInjava = "";
  String resultTextInjava;

  Double resultDouble = 0.0;
  // 리턴 받을 공간 만들어두기
  TextView saveTextView;
  TextView resultTextView;

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

    // 객체 리턴 받는다.
    saveTextView = (TextView) findViewById(R.id.save_text);
    resultTextView = (TextView) findViewById(R.id.result_text);


  }

  public void btnClick(View view) {
    // v.getId() 버튼 id
    // v.getText() 버튼 text

    int clickId = view.getId();
    String clickText = ((Button) view).getText().toString();

    //Toast.makeText(MainActivity.this,clickText+"",Toast.LENGTH_SHORT).show();

    if (clickText.equals("=") || clickText == "=") {

      Formula f = new Formula(saveTextInjava);
      Variant variant = null;

      try {
        variant = f.evaluate();
      } catch (EvaluateException e) {
        e.printStackTrace();
      }
      saveTextView.setText(saveTextInjava);
      resultTextView.setText("=" + variant.toString());
      // 개체 값 초기화
      saveTextInjava = "";
      resultTextInjava = "";
      littlesaveTextInjava = "";
    } else if (clickText.equals("C") || clickText == "C") {
      saveTextInjava = "0";
      resultTextInjava = "0";
      saveTextView.setText(saveTextInjava);
      resultTextView.setText(resultTextInjava);
    } else if (clickText.equals("ㅁ") || clickText == "ㅁ") {
      MainActivity.this.finish();
    } else if ((clickText.equals("+") || clickText == "+") || (clickText.equals("-") || clickText == "-") || (clickText.equals("*") || clickText == "*") || (clickText.equals("/") || clickText == "/")) {
      saveTextInjava += clickText;
      saveTextView.setText(saveTextInjava);
      resultTextView.setText("0");
      littlesaveTextInjava = "";
    } else {
      saveTextInjava += clickText;
      littlesaveTextInjava += clickText;
      resultTextView.setText(littlesaveTextInjava);
    }
  }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:background="#000000"
  android:orientation="vertical"
  android:padding="5sp"
  tools:context="com.coffee.tab_cal.MainActivity">


  <TextView
    android:id="@+id/save_text"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_weight="1"
    android:text="0"
    android:textAlignment="textEnd"
    android:textColor="#ffffff"
    android:textSize="30sp" />

  <TextView
    android:id="@+id/result_text"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_weight="1"
    android:text="0"
    android:textAlignment="textEnd"
    android:textColor="#ffffff"
    android:textSize="50sp" />

  <GridLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_weight="0.3"
    android:columnCount="4"
    android:rowCount="5">
    <!--0-->
    <Button
      android:id="@+id/button0_0"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="0"
      android:layout_columnWeight="1"
      android:layout_row="0"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="C" />

    <Button
      android:id="@+id/button0_1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="1"
      android:layout_columnWeight="1"
      android:layout_row="0"
      android:layout_rowWeight="1"
      android:text="+/-" />

    <Button
      android:id="@+id/button0_2"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="2"
      android:layout_columnWeight="1"
      android:layout_row="0"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="ㅁ" />

    <Button
      android:id="@+id/button0_3"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="3"
      android:layout_columnWeight="1"
      android:layout_row="0"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="/" />

    <!--1-->
    <Button
      android:id="@+id/button1_0"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="0"
      android:layout_columnWeight="1"
      android:layout_row="1"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="7" />

    <Button
      android:id="@+id/button1_1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="1"
      android:layout_columnWeight="1"
      android:layout_row="1"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="8" />

    <Button
      android:id="@+id/button1_2"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="2"
      android:layout_columnWeight="1"
      android:layout_row="1"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="9" />

    <Button
      android:id="@+id/button1_3"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="3"
      android:layout_columnWeight="1"
      android:layout_row="1"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="*" />

    <!--2-->
    <Button
      android:id="@+id/button2_0"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="0"
      android:layout_columnWeight="1"
      android:layout_row="2"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="4" />

    <Button
      android:id="@+id/button2_1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="1"
      android:layout_columnWeight="1"
      android:layout_row="2"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="5" />

    <Button
      android:id="@+id/button2_2"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="2"
      android:layout_columnWeight="1"
      android:layout_row="2"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="6" />

    <Button
      android:id="@+id/button2_3"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="3"
      android:layout_columnWeight="1"
      android:layout_row="2"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="-" />

    <!--3-->
    <Button
      android:id="@+id/button3_0"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="0"
      android:layout_columnWeight="1"
      android:layout_row="3"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="1" />

    <Button
      android:id="@+id/button3_1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="1"
      android:layout_columnWeight="1"
      android:layout_row="3"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="2" />

    <Button
      android:id="@+id/button3_2"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="2"
      android:layout_columnWeight="1"
      android:layout_row="3"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="3" />

    <Button
      android:id="@+id/button3_3"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="3"
      android:layout_columnWeight="1"
      android:layout_row="3"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="+" />

    <!--4-->
    <Button
      android:id="@+id/button4_0"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="0"
      android:layout_columnSpan="2"
      android:layout_columnWeight="1"
      android:layout_row="4"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:layout_gravity="fill_horizontal"
      android:text="0" />

    <Button
      android:id="@+id/button4_2"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="2"
      android:layout_columnWeight="1"
      android:layout_row="4"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="." />

    <Button
      android:id="@+id/button4_3"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_column="3"
      android:layout_columnWeight="1"
      android:layout_row="4"
      android:layout_rowWeight="1"
      android:onClick="btnClick"
      android:text="=" />

  </GridLayout>

</LinearLayout>

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계산기 만들때 쓴 라이브러리인

Formula.jar doc ???

사용법 찾으려고 돌아다니다가 찾은 사이트다

http://www.japisoft.com/formula/javadoc/com/japisoft/formula/Formula.html