四則運算APP最后階段

【開發環境】：eclipse

【開發項目】：小學生四則運算APP

【開發人員】：鄭勝斌?http://www.cnblogs.com/zsb1/ ? ? ? ? ? ?

? ? ? ? ? ? ? ? ? ?孔德穎?http://www.cnblogs.com/kong21/

? ? ? ? ? ? ? ? ? ?李豌湄?http://www.cnblogs.com/leewanmei/ ? ?

? ? ? ? ? ? ? ? ? ?江丹儀?http://www.cnblogs.com/JDY64/

【Github】：https://github.com/zhengshengbin/sizeyunsuan

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在最后階段中，我們對APP出題部分進行修改，例如把*號改為×，/號改為÷，這樣會跟加直觀。另外在初級的出題上也進行了修改，不會出現很難解答的題目。然后在提交答案后，我們對提交答案部分進行了判斷，若提交的答案是錯的，就會顯示紅色。修改的代碼和截圖如下：

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package com.de.sizhe;import java.math.RoundingMode; import java.text.DecimalFormat; import android.os.Bundle; import android.os.Handler; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.TableLayout; import android.widget.TableRow; import android.widget.TextView; import android.app.Activity; import android.content.Intent;public class ChujiActivity extends Activity {private TableLayout tableLayout;private TextView tv1;private Button b1;private int count=0;private int t=0;static DecimalFormat decimal = new DecimalFormat("#.##");private Handler handler=new Handler();private Runnable runnable=new Runnable() {@Overridepublic void run() {// TODO Auto-generated method stub++t;tv1.setText("時間："+String.valueOf(t));handler.postDelayed(runnable, 1000);}};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_tgaoji);handler.postDelayed(runnable, 1000);final Intent intent1=new Intent(ChujiActivity.this,TDeFenActivity.class);tableLayout=(TableLayout) findViewById(R.id.GTab);b1=(Button) findViewById(R.id.b1);tv1=(TextView) findViewById(R.id.shijian);Intent intent=getIntent();Bundle bundle=intent.getExtras();count=bundle.getInt("tishu");//獲取題目數量 String str1 = new String(); //題目final String s[] = new String[count]; //題目數組final String[] str=new String[count]; //用戶輸入的答案數組final String[] bjanswer = new String[count];// 標準答案int[] num1 = new int[4]; //計算的各個數值final EditText[] answer=new EditText[count];TextView[] show=new TextView[count];for(int i=0;i<count;i++){int n=2;//4個操作數char[] op = { '+', '-', '×', '÷' };int[] no = new int[4];int cs;// 正負參數 TableRow tableRow=new TableRow(this);show[i]=new TextView(this);answer[i]=new EditText(this);tableRow.addView(show[i]);tableRow.addView(answer[i]);for (int j = 0; j < n; j++) {cs = (int) (Math.random() * 2);if (cs == 0)// 負數num1[j] = -(int) (Math.random() * 10);// 控制隨機數數值else// 正數num1[j] = (int) (Math.random() * 10);// 控制隨機數數值 }for (int k = 0; k < n - 1; k++) {no[k] = (int) (Math.random() * 4);// 隨機產生操作符if (no[k] == 3 && num1[k + 1] == 0) {do {num1[k + 1] = (int) (Math.random() * 100);// 如果除號后為0，則重新取數。} while (num1[k + 1] == 0);}}for (int h = 0; h < n; h++) {if (h != n - 1){if (num1[h] < 0)str1 = str1 +" (" + String.valueOf(num1[h])+")" + String.valueOf(op[no[h]]);elsestr1 = str1 +" "+ String.valueOf(num1[h])+ String.valueOf(op[no[h]]);} else{if (num1[h] < 0)str1 = str1 +" (" + String.valueOf(num1[h]) +")=";elsestr1 = str1+" " + String.valueOf(num1[h]) + "=";}}s[i] = str1;str1 = new String();// 計算標準答案int sign; // 累加運算時的符號float left, right;// 保存蹭結果 decimal.setRoundingMode(RoundingMode.HALF_UP);left = 0;right = num1[0];sign = 1;for (int g = 0; g < n - 1; g++){switch (op[no[g]]){case '+':left = left + sign * right;sign = 1;right = num1[g + 1];break;case '-':left = left + sign * right;sign = -1;right = num1[g + 1];break;case '×':right = right * num1[g + 1];break;case '÷':right = right / num1[g + 1];break;}}bjanswer[i] = String.valueOf(decimal.format(left + sign * right));show[i].setText(s[i]);show[i].setTextSize(18);answer[i].setEms(5);answer[i].setId(i);tableLayout.addView(tableRow);}b1.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubfor(int i=0;i<count;i++){str[i]=answer[i].getText().toString(); //用戶輸入的答案數組 }Bundle bundle=new Bundle();bundle.putStringArray("timu", s);bundle.putStringArray("useranswer", str);bundle.putStringArray("bjanswer", bjanswer);bundle.putInt("Ttishu", count);bundle.putString("shijian", String.valueOf(t));intent1.putExtras(bundle);startActivity(intent1); handler.removeCallbacks(runnable);finish();}});}} chujiActivity package com.de.sizhe;import android.app.Activity; import android.content.Intent; import android.graphics.Color; import android.os.Bundle; import android.view.Gravity; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TableLayout; import android.widget.TableRow; import android.widget.TextView;public class TDeFenActivity extends Activity {private Button cxbtn,tcbtn;private TableLayout dtab1;private TextView textView;private int count=0;private String sj=null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_tde_fen); dtab1=(TableLayout) findViewById(R.id.DTab1);cxbtn=(Button) findViewById(R.id.chongxin);tcbtn=(Button) findViewById(R.id.tuichu);textView=(TextView) findViewById(R.id.showtime);Intent intent=getIntent();Bundle bundle=intent.getExtras();count=bundle.getInt("Ttishu");String[] sty=new String[count];String[] stb=new String[count];String[] stimu=new String[count];sty=bundle.getStringArray("useranswer");stb=bundle.getStringArray("bjanswer");sj=bundle.getString("shijian");stimu=bundle.getStringArray("timu");textView.setText("完成時間為："+sj+"s");int tn=(count+1)*3;TextView[] Tshow=new TextView[tn];TableRow tableRow=new TableRow(this);Tshow[0]=new TextView(this);Tshow[1]=new TextView(this);Tshow[2]=new TextView(this);Tshow[0].setText(" 題目");Tshow[1].setText(" 你的答案");Tshow[2].setText(" 正確答案");tableRow.addView(Tshow[0]);tableRow.addView(Tshow[1]);tableRow.addView(Tshow[2]);dtab1.addView(tableRow);for(int i=0;i<count;i++){TableRow tableRow1=new TableRow(this);Tshow[(i+1)*3]=new TextView(this);Tshow[(i+1)*3+1]=new TextView(this);Tshow[(i+1)*3+2]=new TextView(this);tableRow1.addView(Tshow[(i+1)*3]);tableRow1.addView(Tshow[(i+1)*3+1]);tableRow1.addView(Tshow[(i+1)*3+2]);if(sty[i].equals(stb[i])){Tshow[(i+1)*3].setText(stimu[i]);Tshow[(i+1)*3+1].setText(sty[i]);Tshow[(i+1)*3+1].setGravity(Gravity.RIGHT);Tshow[(i+1)*3+2].setText(stb[i]);Tshow[(i+1)*3+2].setGravity(Gravity.RIGHT);}else{Tshow[(i+1)*3].setText(stimu[i]);Tshow[(i+1)*3+1].setText(sty[i]);Tshow[(i+1)*3+1].setGravity(Gravity.RIGHT);Tshow[(i+1)*3+1].setTextColor(Color.RED);Tshow[(i+1)*3+2].setText(stb[i]);Tshow[(i+1)*3+2].setGravity(Gravity.RIGHT);}dtab1.addView(tableRow1);}cxbtn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubIntent intent=new Intent(TDeFenActivity.this,TixingActivity.class);startActivity(intent);finish();}});tcbtn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stub finish();}});}} TDeFenActivity

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轉載于:https://www.cnblogs.com/zsb1/p/5055276.html

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