小学四则运算APP 第一个冲刺阶段 第三天

团队成员：陈淑筠、杨家安、陈曦

团队选题：小学四则运算APP

第一次冲刺阶段时间：11.17~11.27

本次发布是在与团队成员解决了昨天问题的基础上，再增加了几个界面，增加了一些功能，修改与增加的代码如下：

修改的代码：

package com.example.calculator;

import java.util.*;

import android.os.Bundle;
import android.app.ActionBar;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import android.content.Intent;

public class CalculatorActivity extends Activity {
	private final Random num1=new Random();
	private final Random num2=new Random();
	private final Random r = new Random();
	private int x1;
	private int x2;
	private int x3;

	private TextView text1,text2,text3;
	private EditText answer;
	private Button surebutton;//确定按钮

	private char[] ch={'+','-','*','/'}; //字符数组
	private int index = r.nextInt(ch.length); //随机数，小于数组的长度数, 0~3
	private char d=ch[index];

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		ActionBar actionBar=getActionBar();
		actionBar.setDisplayShowHomeEnabled(true);
		actionBar.setDisplayHomeAsUpEnabled(true);
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_calculator);
		text1=(TextView)findViewById(R.id.textView1);//随机数字
		text3=(TextView)findViewById(R.id.textView3);//随机数字
		text2=(TextView)findViewById(R.id.textView2);//随机运算符号
		answer=(EditText)findViewById(R.id.editText1);

		final String a=String.valueOf(num1.nextInt(100));
		x1=Integer.valueOf(a);
		final String b=String.valueOf(num2.nextInt(100));
		x2=Integer.valueOf(b);
		final String e=String.valueOf(d);

		text1.setText(a);
		text3.setText(b);
		text2.setText(e);
		surebutton=(Button)findViewById(R.id.button);//确定按钮
		surebutton.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				final String c=answer.getText().toString();
				x3=Integer.valueOf(c);
				if(index==0){
					if(x3==x1+x2){
						Toast.makeText(CalculatorActivity.this, "正确"+c, Toast.LENGTH_SHORT).show();
					}
					if(!(x3==x1+x2)){
						Toast.makeText(CalculatorActivity.this, "错误"+c, Toast.LENGTH_SHORT).show();
					}
				}
				if(index==1){
					if(x3==x1-x2){
						Toast.makeText(CalculatorActivity.this, "正确"+c, Toast.LENGTH_SHORT).show();
					}
					if(!(x3==x1-x2)){
						Toast.makeText(CalculatorActivity.this, "错误"+c, Toast.LENGTH_SHORT).show();
					}
				}
				if(index==2){
					if(x3==x1*x2){
						Toast.makeText(CalculatorActivity.this, "正确"+c, Toast.LENGTH_SHORT).show();
					}
					if(!(x3==x1*x2)){
						Toast.makeText(CalculatorActivity.this, "错误"+c, Toast.LENGTH_SHORT).show();
					}
				}
				if(index==3){
					if(x3==x1/x2){
						Toast.makeText(CalculatorActivity.this, "正确"+c, Toast.LENGTH_SHORT).show();
					}
					if(!(x3==x1/x2)){
						Toast.makeText(CalculatorActivity.this, "错误"+c, Toast.LENGTH_SHORT).show();
					}
				}

			}
		});

	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.calculator, menu);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		// TODO Auto-generated method stub
		switch (item.getItemId()) {
		case android.R.id.home:
			//创建启动MainActivity的Intent
			Intent intent=new Intent(this,TypesActivity.class);
			//添加额外的Flag，将Activity栈中处于MainActivity之上的Activity弹出
			intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
			startActivity(intent);
			break;

		default:
			break;
		}
		return super.onOptionsItemSelected(item);
	}

}

增加的代码：

package com.example.calculator;

import android.os.Bundle;
import android.app.ActionBar;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class TypesActivity extends Activity {
	private Button btn1;
	private Button btn2;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		ActionBar actionBar=getActionBar();
		actionBar.setDisplayShowHomeEnabled(true);
		actionBar.setDisplayHomeAsUpEnabled(true);
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_types);
		btn1=(Button)findViewById(R.id.button1);
		btn2=(Button)findViewById(R.id.button2);

		btn1.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				Intent intent=new Intent();
				intent.setClass(TypesActivity.this, CalculatorActivity.class);
				startActivity(intent);
				TypesActivity.this.finish();
			}
		});
		btn2.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				Intent intent=new Intent();
				intent.setClass(TypesActivity.this, CalculatorsActivity.class);
				startActivity(intent);
				TypesActivity.this.finish();
			}
		});
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.types, menu);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		// TODO Auto-generated method stub
		switch (item.getItemId()) {
		case android.R.id.home:
			//创建启动MainActivity的Intent
			Intent intent=new Intent(this,MainActivity.class);
			//添加额外的Flag，将Activity栈中处于MainActivity之上的Activity弹出
			intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
			startActivity(intent);
			break;

		default:
			break;
		}
		return super.onOptionsItemSelected(item);
	}

}

　　增加了两个选择按钮“单题练习”与“多选择练习”；

“多选择练习”的布局界面：

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:background="@drawable/animal"
    tools:context=".CalculatorsActivity" >

    <TableLayout android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
    <TableRow
        android:id="@+id/tableRow1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="输入位数" />

        <EditText
            android:id="@+id/editText1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ems="5"
            android:inputType="number" >

            <requestFocus />
        </EditText>
    </TableRow>

    <TableRow
        android:id="@+id/tableRow2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

        <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="输入题数" />

        <EditText
            android:id="@+id/editText2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ems="5"
            android:inputType="number"  />
    </TableRow>

    <TableRow
        android:id="@+id/tableRow3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

        <TextView
            android:id="@+id/textView3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="输入时间" />

        <EditText
            android:id="@+id/editText3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ems="3"
            android:inputType="number"  />

        <TextView
            android:id="@+id/textView4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="分" />

        <EditText
            android:id="@+id/editText4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ems="3"
            android:inputType="number"/>

        <TextView
            android:id="@+id/textView5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="秒" />
    </TableRow>

    <TableRow
        android:id="@+id/tableRow4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        >
       <RadioGroup
        android:id="@+id/group"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
       >

        <RadioButton
            android:id="@+id/radio0"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:checked="true"
            android:text="@string/add" />

        <RadioButton
            android:id="@+id/radio2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignLeft="@+id/radio0"
            android:layout_below="@+id/radio0"
            android:text="@string/jian" />

        <RadioButton
            android:id="@+id/radio1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/cheng" />

        <RadioButton
            android:id="@+id/radio3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/chu" />
    </RadioGroup>
    </TableRow>

    <TableRow
        android:id="@+id/tableRow5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >

    </TableRow>

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="开始" />

</TableLayout>

</RelativeLayout>

　　演示APP运行界面：

1）主界面：

2）选择界面：

3）单题练习：（解决成功）

   

4）多选择练习：

接下来的任务是继续完善“多选择练习”界面！加油！