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トップに関する質問電卓の計算方法について

編集履歴

質問編集履歴

1

コードの修正

2019/01/26 12:08

投稿

piko15671
piko15671

スコア12

test CHANGED
File without changes
test CHANGED
@@ -6,7 +6,45 @@
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  ```java
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+ package com.example.dentaku;
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+
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+
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+
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+ import android.os.Bundle;
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+
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+ import android.support.v7.app.AppCompatActivity;
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+
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+ import android.view.View;
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+
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+ import android.widget.TextView;
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+
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+
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+
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+ public class MainActivity extends AppCompatActivity {
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+
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+ String number = "";
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+
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+ TextView textview;
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+
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+
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+
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+ @Override
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+
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+ protected void onCreate(Bundle savedInstanceState) {
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+
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+ super.onCreate(savedInstanceState);
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+
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+ setContentView(R.layout.activity_main);
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+
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+ textview = (TextView)findViewById(R.id.tv);
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+
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+ textview.setText("0");
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+
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+ }
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+
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+
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+
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- public void onClickButton0(View view){
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+ public void onClickButton0(View view){
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  if (number.equals("")) return;
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@@ -26,13 +64,93 @@
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  }
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+
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+ public void onClickButton2(View view){
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+
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+ number += "2";
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+
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- //2から9までかいていく
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+ textview.setText(number);
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+ }
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- public void onClickPlus(View view){
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+ public void onClickButton3(View view){
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+ number += "3";
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+
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- int numberInt = Integer.parseInt(number);
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+ textview.setText(number);
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+
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+ }
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+
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+
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+
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+ public void onClickButton4(View view){
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+
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+ number += "4";
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+
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+ textview.setText(number);
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+
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+ }
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+
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+
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+
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+ public void onClickButton5(View view){
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+
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+ number += "5";
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+
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+ textview.setText(number);
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+
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+ }
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+
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+
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+
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+ public void onClickButton6(View view){
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+
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+ number += "6";
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+
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+ textview.setText(number);
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+
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+ }
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+
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+
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+
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+ public void onClickButton7(View view){
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+
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+ number += "7";
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+
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+ textview.setText(number);
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+
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+ }
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+
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+
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+
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+ public void onClickButton8(View view){
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+
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+ number += "8";
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+
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+ textview.setText(number);
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+
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+ }
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+
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+
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+
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+ public void onClickButton9(View view){
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+
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+ number += "9";
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+
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+ textview.setText(number);
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+
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+ }
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+
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+
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+
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+ public void onClickDot(View view){
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+
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+ number += ".";
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+
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+ textview.setText(number);
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  }
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