public class SendActivity extends Activity { 
 
  @Override 
  public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
     
    setContentView(R.layout.activity_send); 
     
    //獲取按鈕對象 
    Button btnSendButton = (Button)findViewById(R.id.btnSend); 
    btnSendButton.setOnClickListener(new OnClickListener() {       
      public void onClick(View v) { 
         
        Intent intent = new Intent(); 
        //第一參數(shù)取的是這個應用程序的Context，生命周期是整個應用 
        //第二個參數(shù)是要跳轉(zhuǎn)的頁面的全路徑 
        intent.setClassName( getApplicationContext(), "com.example.testofdialog.ReceiveActivity" ); 
        //Bundle類用作攜帶數(shù)據(jù)，它類似于Map，用于存放key-value名值對形式的值 
        Bundle b = new Bundle();  
        b.putString("我是key", "這里就是你要傳遞的內(nèi)容了"); 
        //此處使用putExtras，接受方就響應的使用getExtra 
        intent.putExtras( b );  
        startActivity(intent); 
        // 關閉當前頁面 
        System.exit(0); 
        //無論是exit還是finish都是可以的 
        //SendActivity.this.finish(); 
         
      } 
    }); 
 
  } 
} 

public class ReceiveActivity extends Activity { 
 
  @Override 
  public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
     
    setContentView(R.layout.activity_receive); 
     
    Button btnReceiveButton = (Button)findViewById(R.id.btnReceive); 
    btnReceiveButton.setOnClickListener(new OnClickListener() {      
      public void onClick(View v) {         
        //最后的參數(shù)一定要和發(fā)送方的相同，否則得到空值 
        String rString = getIntent().getExtras().getString("我是key"); 
         
        Toast.makeText(ReceiveActivity.this, rString, Toast.LENGTH_SHORT).show(); 
      } 
    }); 
  } 
}