BMI体脂计算器 app源码

该实例较为简单，可供参考。

【实例截图】

【核心代码】

package com.example.administrator.bmii;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;

import static com.example.administrator.bmii.R.id.result;

public class ResultActivity extends AppCompatActivity {
    private TextView resultView;
    private TextView resultView2;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_result);
        resultView = (TextView) findViewById(result);





        //得到Intent对象当中的值
        Intent intent = getIntent();
        String factorOneStr = intent.getStringExtra("one");
        String factorTwoStr = intent.getStringExtra("two");

            double factorOneDouble = Double.valueOf(factorOneStr);
            double factorTwoDouble = Double.valueOf(factorTwoStr);
        //计算两个值的积

        double result = factorTwoDouble / ((factorOneDouble/100) * (factorOneDouble/100));

        resultView.setText("您的BMI数值为："   result);



        resultView2 = (TextView)findViewById(R.id.result2);
         if(result>=1&&result<=20){
            resultView2.setText("您的有点营养不良，要多吃多休息保持健康！");
        }
         else if(result>=20&&result<=25){
            resultView2.setText("您的身材很好，要继续保持哦！");
        }
         else if(result>=25&&result<=30){
            resultView2.setText("您的体重有点偏高，注意多多锻炼哦！");
        }
         else if(result>=30&&result<=35){
            resultView2.setText("您的体重高了，要注意饮食多多锻炼哦！");
        }
         else if(result>=35&&result<=60){
            resultView2.setText("您的体重太高了，这样下去有点危险哦！");
        }
         else{
            resultView2.setText("您输入的身高体重有误，请重新输入");
        }






    }
}