張健勳

1. package com.tqc.gdd01;
   
2. 
   
3. import android.app.Activity;
   
4. import android.os.Bundle;
   
5. import android.view.View;
   
6. import android.widget.Button;
   
7. import android.widget.EditText;
   
8. import android.widget.TextView;
   
9. 
   
10. public class GDD01 extends Activity {
    
11.   TextView tv5;
    
12.   EditText et1, et2, et3;
    
13.   Button btn;
    
14. 
    
15.   @Override
    
16.   protected void onCreate(Bundle savedInstanceState) {
    
17.     super.onCreate(savedInstanceState);
    
18.     setContentView(R.layout.main);
    
19.     tv5= (TextView) findViewById(R.id.textView5);
    
20.     et1= (EditText) findViewById(R.id.editText1);
    
21.     et2= (EditText) findViewById(R.id.editText2);
    
22.     et3= (EditText) findViewById(R.id.editText3);
    
23.     btn= (Button) findViewById(R.id.button);
    
24.     btn.setOnClickListener(myListener);
    
25.   }
    
26.   View.OnClickListener myListener=new View.OnClickListener() {
    
27.     @Override
    
28.     public void onClick(View v) {
    
29.       double money=Double.parseDouble(et1.getText().toString());
    
30.       double rate=Double.parseDouble(et2.getText().toString())/100/12;
    
31.       double number=Double.parseDouble(et3.getText().toString());
    
32.       int sum= (int)(money*Math.pow(rate+1,number));
    
33.       tv5.setText("本利合為："+sum);
    
34.     }
    
35.   };
    
36. }

複製代碼