自我LV1

這是TQC的104題，

程式碼為自行撰寫，

僅供參考。

 

最主要練習二個activity呼叫、傳遞值。

 

package COM.TQC.GDD01;


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 GDD01 extends Activity 
{
  private EditText etheight,etweight;
  private RadioButton rb1,rb2;
  private Button b1;
  private String _sex;
    
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) 
  {
    super.onCreate(savedInstanceState);
    
    setContentView(R.layout.main);
    
    findview();
    setlisten();
   
  }
  
  public void findview()
  {
	  b1 = (Button) findViewById(R.id.button1);
	  rb1=(RadioButton)findViewById(R.id.radioButton1);
	  rb2=(RadioButton)findViewById(R.id.radioButton2);
	  etheight=(EditText)findViewById(R.id.editText1);
	  etweight=(EditText)findViewById(R.id.editText2);
  }
  
  public void setlisten()
  {
	  rb1.setOnClickListener(new RadioButton.OnClickListener()
	  {
		@Override
		public void onClick(View v) {
			// TODO Auto-generated method stub
			_sex="M";
			rb2.setChecked(false);
		}
	  });
	  
	  rb2.setOnClickListener(new RadioButton.OnClickListener()
	  {
		@Override
		public void onClick(View v) {
			// TODO Auto-generated method stub
			_sex="G";
			rb1.setChecked(false);
		}		  
	  });
	  
	  b1.setOnClickListener(new Button.OnClickListener()
	    {
	      public void onClick(View v)
	      {
	        //從輸入介面中取出了的身高、體重值，要將身高、體重值傳送給 child_Activity 後作計算	
	        //這些附加在 Intent 上的訊息都儲存在 Bundle 物件中
	    	//透過「intent.putExtras(bundle)」敘述，將「bundle」 物件附加在 Intent 上，隨著 Intent 送出而送出
	    	  Bundle bundle=new Bundle();
	    	  bundle.putString("Sex", _sex.toString());
	    	  bundle.putString("height", etheight.getText().toString());
	    	  bundle.putString("weight", etweight.getText().toString());
	    	  
	    	  Intent intent=new Intent();
	    	  intent.setClass(GDD01.this, GDD01_child.class);
	    	  intent.putExtras(bundle);
	    	  startActivity(intent);

	      }
	    });
  }
  
  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data)
  {
    switch (resultCode)
    { 
      case RESULT_OK:
    
        Bundle bundle = data.getExtras();
        String Sex = bundle.getString("Sex");
        double height = bundle.getDouble("height");
        double weight = bundle.getDouble("weight");
        
        etheight.setText("" + height);
        etweight.setText("" + weight);
        if(Sex.equals("M"))
        {
          rb1.setChecked(true);
        }else
        {
          rb2.setChecked(true);
        }
        break;       
      default: 
        break; 
     } 
   } 
}

 

package COM.TQC.GDD01 ;

import java.text.DecimalFormat;

import android.R.string;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class GDD01_child extends Activity 
{
  Bundle bundle;
  Intent intent;
  double _d1;
  String _s1,_s2;
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) 
  {
    super.onCreate(savedInstanceState);    
    setContentView(R.layout.mylayout);
    
    TextView tvBMI=(TextView) findViewById(R.id.tvBMI);
    TextView tvAdvice=(TextView) findViewById(R.id.tvAdvice);
    
    intent=this.getIntent();
    bundle = intent.getExtras();    
   
    String Sex = bundle.getString("Sex");   
    String _s1=bundle.getString("height");
    String _s2=bundle.getString("weight");
    tvBMI.setText(_s1.toString());
    double height = Double.parseDouble(_s1);
    height=height/100;
    double weight = Double.parseDouble(_s2);
    
    //double height = 170;
    //double weight = 75;
      
    
    String BMI_result = this.getBMI(height,weight);
    String BMI_advice = this.getAdvice(Sex,height,weight);
    
   
    tvBMI.setText(BMI_result);
    
    tvAdvice.setText(BMI_advice);
    
  
    Button b1 = (Button) findViewById(R.id.button1);
    b1.setOnClickListener(new Button.OnClickListener()
    {
      public void onClick(View v)
      {          
    	 
    	  GDD01_child.this.setResult(RESULT_OK, intent);
    	  
    	 
    	  GDD01_child.this.finish();
      }
    });
  }
  
 //BMI值格式化
  private String format(double num)
  {
      
	  
	return "";  
  }
  //取得BMI值
  private String getBMI (double height, double weight)
  {
	  _d1=weight / (height * height);
	  
	  return String.valueOf(_d1);   
  }
  //依BMI值取得建議
  private String getAdvice (String Sex, double height, double weight)
  {
	  	if(_d1>25)
	{
	  		_s1="您該少吃些，並多多運動";
	}
	  	else if(_d1<20)
	{
	  		_s1="您該多吃點";
	}
	  	else
	{
	  		_s1="體型很棒喔";
	}
	 
	  return _s1.toString();    
  }

}

 

 

自我LV~