BMI計算機app源码

【实例截图】

【核心代码】

package com.example.payne.bmi_calculator;

import android.content.Intent;
import android.content.res.ColorStateList;
import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.TextView;

public class Main2Activity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        setTitle("BMI計算結果");
        final ProgressBar progressBar=(ProgressBar)findViewById(R.id.progressBar);
        final TextView gender=(TextView)findViewById(R.id.gender);
        final TextView bmi=(TextView)findViewById(R.id.bmi);
        final TextView result=(TextView)findViewById(R.id.result);
        final Button again=(Button)findViewById(R.id.again);
        Bundle bundle2=getIntent().getExtras();
        double BMI=bundle2.getDouble("bmi");
        progressBar.setProgress((int)((BMI-14)/18*100));
        bmi.setText(String.format("%.1f",BMI));
        switch (bundle2.getInt("gender")){
            case 0:
                gender.setText("男性");
                break;
            case 1:
                gender.setText("女性");
                break;
        }
        if(BMI<18.5){
            progressBar.setProgressTintList(ColorStateList.valueOf(Color.BLUE));
            result.setText("過輕");
        }
        else if(BMI<23){
            progressBar.setProgressTintList(ColorStateList.valueOf(Color.GREEN));
            result.setText("正常");
        }
        else if(BMI<27.5){
            progressBar.setProgressTintList(ColorStateList.valueOf(Color.YELLOW));
            result.setText("過重");
        }
        else {
            progressBar.setProgressTintList(ColorStateList.valueOf(Color.RED));
            result.setText("肥胖");
        }
        again.setOnClickListener(new Button.OnClickListener(){
            @Override
            public void onClick(View v) {
                finish();
            }
        });
    }
}