28、activity之间传递数据&批量传递数据

 1 import android.app.Activity;
 2 import android.content.Intent;
 3 import android.os.Bundle;
 4 import android.view.View;
 5 import android.widget.EditText;
 6 
 7 /**
 8  * activity之间传递数据&批量传递数据
 9  * @author dr
10  */
11 public class Demo1Activity extends Activity {
12     /** Called when the activity is first created. */
13     @Override
14     public void onCreate(Bundle savedInstanceState) {
15         super.onCreate(savedInstanceState);
16         setContentView(R.layout.main);
17     }
18     
19     
20     public void click(View view){
21         EditText et = (EditText) this.findViewById(R.id.et_activity01);
22         String content = et.getText().toString().trim();
23         
24         Intent intent = new Intent(this,Demo2Activity.class);
25         // intent.putExtra("cn.itcast.passdata.name", content);
26         //基本数据类型 和基本数据类型的数组 我们都可以通过intent传递 
27         
28         // 批量传递数据
29         Bundle bundle = new Bundle();
30         bundle.putString("cn.itcast.passdata.name", content);
31         
32         intent.putExtras(bundle);
33         
34         startActivity(intent);
35     }
36 }

 1 import android.app.Activity;
 2 import android.content.Intent;
 3 import android.os.Bundle;
 4 import android.widget.TextView;
 5 
 6 public class Demo2Activity extends Activity {
 7     @Override
 8     public void onCreate(Bundle savedInstanceState) {
 9         super.onCreate(savedInstanceState);
10         setContentView(R.layout.main2);
11         
12         //获取到激活他的意图
13         Intent intent = getIntent();
14        // String name = intent.getStringExtra("cn.itcast.passdata.name");
15          Bundle bundle =  intent.getExtras();
16          String name =  bundle.getString("cn.itcast.passdata.name");
17         
18          TextView tv  =(TextView) this.findViewById(R.id.tv_activity02);
19          tv.setText("你好 :"+name);
20     }
21 }