之前申请的github账户，不知道怎么回事一直无法储存代码，所以我们决定在这里展现一些代码。
MainActivity代码：（关于activity_main.xml界面）
package com.example.brdemo;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
public class MainActivity extends Activity {
private Button btn1;
private Button btn2;
private Button btn3;
private EditText et1;
private EditText et2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btn1=(Button)findViewById(R.id.b1);
btn2=(Button)findViewById(R.id.button2);
btn3=(Button)findViewById(R.id.b2);
et2=(EditText)findViewById(R.id.editText2);
et1=(EditText)findViewById(R.id.editText1);
btn1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent();
Bundle bundle=new Bundle();
//设置Intent的class属性，跳转到SecondActivity
intent.setClass(MainActivity.this, H.class);
//为intent添加额外的信息
bundle.putString("userName", et1.getText().toString());
bundle.putString("phoneNum", et2.getText().toString());
intent.putExtras(bundle);
//启动Activity
startActivity(intent);
}
});
btn3.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent();
Bundle bundle=new Bundle();
//设置Intent的class属性，跳转到SecondActivity
intent.setClass(MainActivity.this, H.class);
//为intent添加额外的信息
bundle.putString("userName", et1.getText().toString());
bundle.putString("phoneNum", et2.getText().toString());
intent.putExtras(bundle);
//启动Activity
startActivity(intent);
}
});
btn2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Uri uri=Uri.parse("http://open.taobao.com");
Intent it=new Intent(Intent.ACTION_VIEW,uri);
startActivity(it);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
CheckActivity.java（关于四则运算）
package com.example.brdemo;
import java.util.Random;
import android.app.ActionBar;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class CheckActivity extends Activity {
public Button btn,btn1;
private EditText et1;
private EditText et2;
long startTime;
long endTime;
private TextView t11;
private TextView t4;
private TextView t2;
private TextView t3;
private TextView t1;
private TextView t5;
private TextView t6;
int ranswer=0;
int uanswer=0;
String str="";
String z="";
private boolean stop = false;
public int num=5,T=0,F=0,count=1,b=0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.szys);
btn=(Button)findViewById(R.id.bb1);
btn1=(Button)findViewById(R.id.bb2);
et2=(EditText)findViewById(R.id.editText2);
et1=(EditText)findViewById(R.id.editText1);
t11=(TextView)findViewById(R.id.t11);
t4=(TextView)findViewById(R.id.textView4);
t6=(TextView)findViewById(R.id.textView6);
t2=(TextView)findViewById(R.id.textView12);
t5=(TextView)findViewById(R.id.textView10);
t3=(TextView)findViewById(R.id.textView7);
t1=(TextView)findViewById(R.id.textView14);
ActionBar actionBar = getActionBar();//获取ActionBar对象
actionBar.setDisplayShowHomeEnabled(true);//显示应用程序图标
actionBar.setDisplayHomeAsUpEnabled(true);//将应用程序图标转变为可点击图标，并添加一个返回箭头。
btn1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
CheckActivity.this.finish();
}
});
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
T=0;F=0;
str="";
z="";
stop=false;
try{
String bb = et1.getText().toString();
num=Integer.parseInt(bb);
if(num>15)
{
t11.setText("输入题数错误，请重新输入！（1-15）");
et1.setText("");
}
else
{
startTime=System.currentTimeMillis();
t4.setText(""+T);
t2.setText(""+F);
t1.setText(""+b);
//btn.setVisible(false);
//et1.setEditable(false);
showtext();
}
}
catch(NumberFormatException e1)
{
t11.setText("输入题数错误，请重新输入！（1~15）");
et1.setText("");
}
}
});
et2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
try{
if(!stop)
{
String tt = et2.getText().toString();
uanswer=Integer.parseInt(tt);;
if(num==count)
{
if(uanswer==ranswer)
{
t4.setText(""+ranswer);
t3.setText("答对！");
T++;
t6.setText(""+T);
b=(100/num)*T;
t1.setText(""+b);
if(b>90){
Intent intent=new Intent();
intent.setClass(CheckActivity.this,Test1.class);
startActivity(intent);
CheckActivity.this.finish();
}
count++;
}
else
{
t4.setText(""+ranswer);
t3.setText("答错！");
F++;
t2.setText(""+F);
count++;
}
stop=true;
t3.setText(" 答題結束！");
endTime=System.currentTimeMillis();
//et2.setEditable(true);
// btn.setVisible(true);
t5.setText((endTime-startTime)/1000+"s");
}
else if(uanswer==ranswer)
{
t4.setText(""+ranswer);
t3.setText("答对！");
T++;
t6.setText(""+T);
b=(100/num)*T;
t1.setText(""+b);
showtext();
if(b>90){
Intent intent=new Intent();
intent.setClass(CheckActivity.this,Test1.class);
startActivity(intent);
CheckActivity.this.finish();
}
count++;
}
else
{
t4.setText(""+ranswer);
t3.setText("答错！");
F++;
t2.setText(""+F);
showtext();
count++;
}
}
}
catch(NumberFormatException e2)
{
t11.setText(str+"答案格式错误，请重新输入答案！");
et2.setText("");
}
}
});
}
void showtext()
{
char op=‘+‘;
int a=0,b=0,c=0,e=0,f=0,opnum=0,chioce=0;
int temp=0;
Random ra =new Random();
e=ra.nextInt(10)+1;
f=ra.nextInt(10)+1;
chioce=ra.nextInt(2)+1;
if(e%2==0)
{
a=ra.nextInt(10)+2;
}
else
{
a=-ra.nextInt(10)+2;
}
if(f%2==0)
{
b=ra.nextInt(10)+2;
}
else
{
b=-ra.nextInt(10)+2;
}
c=ra.nextInt(5);
opnum=Math.abs(ra.nextInt())%4+1;
et2.setText("");
switch(chioce)
{
case 1:
{
switch(opnum)
{
case 1:
op=‘+‘;
break;
case 2:
op=‘-‘;
break;
case 3:
op=‘*‘;
break;
case 4:
op=‘/‘;
break;
}
if((op==‘-‘) && (a<b))
{
temp=a;
a=b;
b=temp;
}
if(op==‘/‘)
{
if(b==0)
{
b=1;
}
a=a*b;
}
if(a>0&&b>0)
{
z=String.valueOf(a)+String.valueOf(op)+String.valueOf(b)+"="+"\n";
}
else if(a<0&&b>0)
{
z="("+String.valueOf(a)+")"+String.valueOf(op)+String.valueOf(b)+"="+"\n";
}
else if(a>0&&b<0)
{
z=String.valueOf(a)+String.valueOf(op)+"("+String.valueOf(b)+")"+"="+"\n";
}
else
{
z="("+String.valueOf(a)+")"+String.valueOf(op)+"("+String.valueOf(b)+")"+"="+"\n";
}
str=str+z;
t11.setText(str);
switch(op)
{
case ‘+‘: ranswer=a+b; break;
case ‘-‘: ranswer=a-b; break;
case ‘*‘: ranswer=a*b; break;
case ‘/‘: ranswer=a/b; break;
}
break;
}
case 2:
{
int jc=1;
str=str+String.valueOf(c)+"!="+"\n";
t11.setText(str);
for(int i=c;i>0;i--)
{
jc=jc*i;
}
ranswer=jc;
break;
}
}
}
}
Help.java（关于四则运算的认识）
package com.example.brdemo;
import android.app.ActionBar;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
public class Help extends Activity {
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.help);
ActionBar actionBar = getActionBar();//获取ActionBar对象
actionBar.setDisplayShowHomeEnabled(true);//显示应用程序图标
actionBar.setDisplayHomeAsUpEnabled(true);//将应用程序图标转变为可点击图标，并添加一个返回箭头。
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case R.id.font_10:
Intent intent1=new Intent(this,CheckActivity.class);
startActivity(intent1);
break;
case R.id.font_12:
Intent intent2=new Intent(this,About.class);
startActivity(intent2);
break;
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);
}
}
时间： 2024-10-24 14:21:52