BMI身高体重指数计算器forAndroid.doc

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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="
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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