1. 前言：
基因在个人身高的决定中占重要地位，除此之外睡眠、运动、营养、发育时间都会影响身高。根据下面公式实现简单的预测身高程序：
男性身高= (父亲身高+母亲身高)*0.54
女性身高= (父亲身高*0.923+母亲身高)/2
睡眠、运动、爱喝牛奶、营养成立在上面公式上各加2
2. 实现效果
3. 页面布局
这个页面布局在我上一篇文章已经写了，这里不再诸多赘述，具体前端布局看这里：Android身高预测小程序页面布局
4. 功能逻辑处理
package com.example.myapp2;
import androidx.appcompat.app.AppCompatActivity;
import android.app.DatePickerDialog;
import android.graphics.Color;
import android.os.Bundle;
import android.text.method.LinkMovementMethod;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
import android.widget.Toast;
import java.util.Calendar;
public class LYXForecastHieghtActivity extends AppCompatActivity implements View.OnClickListener, CompoundButton.OnCheckedChangeListener {
Button btn_date,btn_forecast,btn_reset;
TextView tv_about,tv_message,tv_msgContent1,tv_msgContent2,tv_msgContent3;
RadioGroup rg_gender;
RadioButton rb_man,rb_wom;
LinearLayout pagebg;
CheckBox checkBox,checkBox2,checkBox3,checkBox4;
EditText edt_birthday,edt_fatherheight,edt_motherheight;
int choiceSex;
int childheight;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_lyxforecast_hieght);
//获取布局中对应的控件的id
btn_date=findViewById(R.id.btn_date);
btn_date.setOnClickListener(this);
pagebg=findViewById(R.id.pagebg);
tv_message=findViewById(R.id.tv_message);
tv_msgContent1=findViewById(R.id.tv_msgContent1);
tv_msgContent2=findViewById(R.id.tv_msgContent2);
tv_msgContent3=findViewById(R.id.tv_msgContent3);
edt_fatherheight=findViewById(R.id.edt_fatherHeight);
edt_motherheight=findViewById(R.id.edt_motherheight);
edt_birthday=findViewById(R.id.edt_birthday);
btn_forecast=findViewById(R.id.btn_foreget);
btn_forecast.setOnClickListener(this);
btn_reset=findViewById(R.id.btn_reset);
btn_reset.setOnClickListener(this);
rg_gender=findViewById(R.id.rg_gender);
rb_man=findViewById(R.id.rb_man);
rb_man.setOnCheckedChangeListener(this);
rb_wom=findViewById(R.id.rb_wom);
rb_wom.setOnCheckedChangeListener(this);
checkBox=findViewById(R.id.checkBox);
checkBox2=findViewById(R.id.checkBox2);
checkBox3=findViewById(R.id.checkBox3);
checkBox4=findViewById(R.id.checkBox4);
//设置性别单选按钮 监听事件
rg_gender.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if(checkedId==rb_man.getId()){
choiceSex=1; //选择男
}
else{
choiceSex=0; //选择女
}
}
});
tv_about=findViewById(R.id.tv_about);
//设置id:tv_about为可点击状态
tv_about.setMovementMethod(LinkMovementMethod.getInstance());
}
//性别选择 点击弹框
public void onCheckedChanged(CompoundButton compoundButton,boolean isCheck){
switch(compoundButton.getId()){
case R.id.rb_man:
if (isCheck){
Toast.makeText(this, "男", Toast.LENGTH_SHORT).show();
pagebg.setBackgroundColor(Color.argb(100,228,237,193));
}
break;
case R.id.rb_wom:
if (isCheck){
Toast.makeText(this, "女", Toast.LENGTH_SHORT).show();
pagebg.setBackgroundColor(Color.argb(100,193,226,143));
}
break;
}
}
// 按钮事件处理
public void onClick(View view){
switch(view.getId()){
case R.id.btn_date:
DatePickerDialog.OnDateSetListener birthdayListener=new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
month=month+1;
edt_birthday.setText(year+"-"+month+"-"+dayOfMonth);
}
};
Calendar calendar=Calendar.getInstance();
int byear,bmonth,bday;
byear=calendar.get(Calendar.YEAR)-20;
bmonth=calendar.get(Calendar.MONTH);
bday=calendar.get(Calendar.DAY_OF_MONTH);
DatePickerDialog datePickerDialog=new DatePickerDialog(this,birthdayListener,byear,bmonth,bday);
datePickerDialog.show();
break;
case R.id.btn_reset:
edt_fatherheight.setText(" ");
edt_birthday.setText(" ");
edt_motherheight.setText(" ");
// rb_man.setChecked(true);
// for (int i=0;i<pagebg.getChildCount();i++){
// CheckBox cb_child=(CheckBox) pagebg.getChildAt(i);
// cb_child.setChecked(false);
// }
// rb_man.setChecked(true);
// rb_wom.setChecked(false);
break;
case R.id.btn_foreget:
String fh=edt_fatherheight.getText().toString();
String mh=edt_motherheight.getText().toString();
if(edt_fatherheight.getText().toString().length()<1 || edt_motherheight.getText().toString().length()<1|| edt_birthday.getText().toString().length()<1){
Toast.makeText(this,"请输入你父母的身高信息和你的出生日期",Toast.LENGTH_LONG);
}else{
if(choiceSex==1){
if (!fh.equals("")) {
int fh1=Integer.parseInt(fh);
int mh1=Integer.parseInt(mh);
childheight = (int)((fh1+mh1)*0.54);
if(checkBox.isChecked()){
childheight = childheight+2;
}
if (checkBox2.isChecked()){
childheight = childheight+2;
}
if (checkBox3.isChecked()){
childheight = childheight+2;
}
tv_msgContent1.setText("你父亲的身高为:"+fh1+"cm");
tv_msgContent2.setText("你母亲的身高为:"+mh1+"cm");
tv_msgContent3.setText("你的身高为:"+childheight+"cm");
}
}
else{
if (!mh.equals("")) {
int fh1=Integer.parseInt(fh);
int mh1=Integer.parseInt(mh);
childheight = (int)((fh1*0.923+mh1)/2);
if(checkBox.isChecked()){
childheight = childheight+2;
}
if (checkBox2.isChecked()){
childheight = childheight+2;
}
if (checkBox3.isChecked()){
childheight = childheight+2;
}
tv_msgContent1.setText("你父亲的身高为:"+fh1+"cm");
tv_msgContent2.setText("你母亲的身高为:"+mh1+"cm");
tv_msgContent3.setText("你的身高为:"+childheight+"cm");
}
}
break;
}
}
}
}
简单的实现效果，没有做优化…