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xml version="1.0" encoding="utf-8"?>

<resources>

<string name="app_name">BMI身高体重指数计算器string>

resources>

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xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

>

<TextView

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="请输入您的身高：单位（米）"

android:textColor="#00000F"

android:textSize="20dp"

/>

<EditText

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:id="@+id/height"

/>

<TextView

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="请输入您的体重：单位（千克）"

android:textColor="#00000F"

android:textSize="20dp"

/>

<EditText

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:id="@+id/weight"

android:inputType="number"

/>

<Button

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="BMI计算"

android:textColor="#FF000F"

android:id="@+id/BMIbutton"

/>

<TextView

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:id="@+id/show"

android:textColor="#0000F0"

android:textSize="30dp"

/>

LinearLayout>

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Package ……

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

public class BMIActivity extends Activity {

private EditText height = null;

private EditText weight = null;

private Button button = null;

private TextView show = null;

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

Button button=(Button)findViewById(R.id.BMIbutton);

height=(EditText) findViewById(R.id.height);

weight=(EditText) findViewById(R.id.weight);

show=(TextView) findViewById(R.id.show);

button.setOnClickListener(new View.OnClickListener() {

double bmi=0;

public void onClick(View v) {

double h=new Double(height.getText().toString());

double w=new Double(weight.getText().toString());

bmi=w/(h*h);

double final_resault = exchangeResault(bmi);

if(bmi<18.5){

show.setText("您的身高体重指数是："+final_resault+" "+"(⊙o⊙)哦！体重过轻，注意增加饮食！");

}

else if(bmi>=18.5||bmi<24){

show.setText("您的身高体重指数是："+final_resault+" "+"O(∩_∩)O~体重正常，继续保持！");

}

else if(bmi>=24||bmi<27){

show.setText("您的身高体重指数是："+final_resault+" "+"(～ o ～)~zZ！体重稍重，注意锻炼！");

}

else if(bmi>=27||bmi<30){

show.setText("您的身高体重指数是："+final_resault+" "+"~~o(>_<)o ~~轻度肥胖，多锻炼，注意饮食健康！");

}

else if(bmi>=30||bmi<35){

show.setText("您的身高体重指数是："+final_resault+" "+"~(@^_^@)~中度肥胖，注意饮食要节制，适当减肥！");

}

else if(bmi>35){

show.setText("您的身高体重指数是："+final_resault+" "+"（*@ο@*） 哇～重度肥胖，必须减肥，不然易患多种肥胖引起的疾病！");

}

}

});

}

public double exchangeResault(double resault){

double first =resault*100;

double second = (int) first;

double second_first = first-second;

if(second_first>0.5){

second++;

}

double jirguo = (double)second/100;

return jirguo;

}

}

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