班级派团队项目小计（四）

 1 package com.team101.classlove;
 2 
 3 import android.os.Bundle;
 4 import android.app.Activity;
 5 import android.content.Intent;
 6 import android.view.LayoutInflater;
 7 import android.view.Menu;
 8 import android.view.View;
 9 import android.view.ViewGroup;
10 import android.view.View.OnClickListener;
11 import android.widget.Button;
12 import android.widget.EditText;
13 import android.widget.ListView;
14 import android.widget.TextView;
15 
16 public class MainActivity extends Activity implements OnClickListener{
17     
18     public Button up;
19     public EditText et;
20     @Override
21     protected void onCreate(Bundle savedInstanceState) {
22         super.onCreate(savedInstanceState);
23         setContentView(R.layout.activity_main);
24         Button up=(Button) findViewById(R.id.btn_up);
25         up.setOnClickListener(new View.OnClickListener() {
26             
27             @Override
28             public void onClick(View v) {
29                 // TODO Auto-generated method stub
30                 EditText et=(EditText) findViewById(R.id.et);
31                 TextView tv=(TextView) findViewById(R.id.tv);
32                 String str = et.getText().toString();//str获取editText里的文本值
33                 tv.setText(str);
34             }
35         });
36     }
37     @Override
38     public void onClick(View arg0) {
39         // TODO Auto-generated method stub
40         
41     }
42     
43     }