package irdc.ex03_10;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
public class EX03_10 extends Activity
{
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
/* 載入main.xml Layout */
setContentView(R.layout.main);
/* 以findViewById()取得Button物件，並加入onClickListener */
Button b1 = (Button) findViewById(R.id.button1);
b1.setOnClickListener(new Button.OnClickListener()
{
public void onClick(View v)
{
/*取得輸入的身高*/
EditText et = (EditText) findViewById(R.id.height);
double height=Double.parseDouble(et.getText().toString());
/*取得選擇的性別*/
String sex="";
RadioButton rb1 = (RadioButton) findViewById(R.id.sex1);
if(rb1.isChecked())
{
sex="M";
}else{
sex="F";
}
/*new一個Intent物件，並指定class*/
Intent intent = new Intent();
intent.setClass(EX03_10.this,EX03_10_1.class);
/*new一個Bundle物件，並將要傳遞的資料傳入*/
Bundle bundle = new Bundle();
bundle.putDouble("height",height);
bundle.putString("sex",sex);
/*將Bundle物件assign給Intent*/
intent.putExtras(bundle);
/*呼叫Activity EX03_10_1*/
startActivity(intent);
}
});
}
}
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package irdc.ex03_10;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class EX03_10_1 extends Activity
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/* 載入main.xml Layout */
setContentView(R.layout.myalyout);
/* 取得Intent中的Bundle物件 */
Bundle bunde = this.getIntent().getExtras();
/* 取得Bundle物件中的資料 */
String sex = bunde.getString("sex");
double height = bunde.getDouble("height");
/* 判斷性別 */
String sexText="";
if(sex.equals("M")){
sexText="男性";
}else{
sexText="女性";
}
/* 取得標準體重 */
String weight=this.getWeight(sex, height);
/* 設定輸出文字 */
TextView tv1=(TextView) findViewById(R.id.text1);
if(sex.equals("M")){
tv1.setText("你是一位"+sexText+"\n你的身高是"+height+"公分\n你的標準體重是"+weight+"公斤");
}else{
tv1.setText("妳是一位"+sexText+"\n妳的身高是"+height+"公分\n妳的標準體重是"+weight+"公斤");
}
}
/* 四捨五入的method */
private String format(double num)
{
NumberFormat formatter = new DecimalFormat("0.00");
String s=formatter.format(num);
return s;
}
/* 以findViewById()取得Button物件，並加入onClickListener */
private String getWeight(String sex,double height)
{
String weight="";
if(sex.equals("M"))
{
weight=format((height-80)*0.7);
}else
{
weight=format((height-70)*0.6);
}
return weight;
}
}
