((Button) findViewById(R.id.Notepadv1)).setOnClickListener( new OnClickListener() { 
  public void onClick(View v) { 
    startActivity(new Intent (MyAndroidAppActivity.this, Notepadv1.class) ); 
  } 
}); 

static final int SEND_SMS_REQUEST = 0; 
static final int CALL_REQUEST = 1; 
 
((Button) findViewById(R.id.sms)).setOnClickListener( new OnClickListener() { 
  public void onClick(View v) { 
    Intent intent = new Intent(MyAndroidAppActivity.this, SendSMSActivity.class); 
    startActivityForResult(intent, SEND_SMS_REQUEST); 
  } 
}); 
 
@Override 
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
  if (requestCode == SEND_SMS_REQUEST) { 
    if (resultCode == RESULT_OK) { 
      Toast.makeText(this, "Send SMS RESULT_OK", Toast.LENGTH_SHORT).show(); 
    }else if (resultCode == RESULT_CANCELED) { 
      Bundle bundle = data.getExtras(); 
      String phoneno = bundle.getString("phoneNO"); 
      Toast.makeText(this, "Send SMS RESULT_CANCELED "+phoneno, Toast.LENGTH_SHORT).show(); 
    } 
  }else if (requestCode == CALL_REQUEST) { 
    if (resultCode == RESULT_CANCELED) { 
      Toast.makeText(this, "Call RESULT_CANCELED", Toast.LENGTH_SHORT).show(); 
    } 
  } 
} 

((Button) findViewById(R.id.send)).setOnClickListener( new Button.OnClickListener() { 
  public void onClick(View v) { 
    SendSMSActivity.this.setResult(RESULT_OK); 
    SendSMSActivity.this.finish(); 
  } 
}): 

((Button) findViewById(R.id.cancel)).setOnClickListener( new Button.OnClickListener() { 
  public void onClick(View v) { 
    // 实例化 Bundle，设置需要传递的参数 
    Bundle bundle = new Bundle(); 
    bundle.putString("phoneNO", "020-123"); 
 
    SendSMSActivity.this.setResult(RESULT_CANCELED, SendSMSActivity.this.getIntent().putExtras(bundle)); 
    SendSMSActivity.this.finish(); 
  } 
}); 
 
@Override 
public boolean onKeyDown(int keyCode, KeyEvent event) { 
  // 是否触发按键为back键  
  if (keyCode == KeyEvent.KEYCODE_BACK) { 
     
    // 实例化 Bundle，设置需要传递的参数 
    Bundle bundle = new Bundle(); 
    bundle.putString("phoneNO", "020-123"); 
     
    setResult(RESULT_CANCELED, this.getIntent().putExtras(bundle)); 
    this.finish(); 
    return true; 
  }else { 
    return super.onKeyDown(keyCode, event); 
  } 
} 

// 在某个按钮响应事件里 
Intent intent = new Intent(this, TextInputActivity.class); 
intent.putExtra("Text", mText); 
intent.putExtra("TextColor", mTextColor); 
intent.putExtra("TextSize", mTextSize); 
intent.putExtra("TextBold", mTextBold); 
 
startActivityForResult(intent, REQUEST_TEXT); 

// in onCreate(Bundle savedInstanceState) 
Bundle extras = getIntent().getExtras(); 
mText = extras.getString("Text"); 
mTextColor = extras.getInt("TextColor"); 
mTextSize = extras.getFloat("TextSize"); 
mTextBold = extras.getBoolean("TextBold");