package tw.com.flag.ch02_mybmi;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends Activity {

	//變數宣告區
	double height,weight,mybmi;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
	}

	
	
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}
	


	
	public void checkbmi(View v){
		
	//初始化變數
	TextView fieldheight = (EditText)findViewById(R.id.height);
	TextView fieldweight = (EditText)findViewById(R.id.weight);
	TextView result = (TextView)findViewById(R.id.result);
	TextView suggest = (TextView)findViewById(R.id.suggest);

	height = Double.parseDouble(fieldheight.getText().toString())/100;
	weight = Double.parseDouble(fieldweight.getText().toString());
	mybmi = weight/ (height*height);
	result.setText("結果：你的BMI是 " + mybmi);
	
	//針對結果作一些建議
	if(mybmi>25) {
		suggest.setText("建議：過重囉，該節食了！");
	}else if (mybmi<20) {
		suggest.setText("建議：太恐怖了，這麼瘦，你是鬼喔！");
	}else {
		 suggest.setText("建議：太厲害了，很標準喔!");
	}
	
		
		
	}

}