startActivityForResult相關參數說明

      原型：void startActivityForResult(Intent intent,int requestCode);

      重寫方法：void onActivityResult(int requestCode,int resultCode,Intent data);

      打開的Activity中調用方法：final void setResult(int resultCode,Intent data);

 

    參數：

    --intent ：用於數據交換；

    --requestCode：

button1.setOnClickListener(
  new View.OnClickListener(){
    public void onClick(View v) {
      startActivityForResult (
        new Intent(ReceiveResult.this, SendResult.class),1);
    }
  }
);
button2.setOnClickListener(
  new View.OnClickListener(){
    public void onClick(View v) {
      startActivityForResult(
        new Intent(ReceiveResult.this, SendResult.class), 2); 
    }
  }
); 
@Override 
protected void 
onActivityResult(int requestCode, int resultCode, Intent data) {
  switch(requestCode){
    case 1://來自按鈕1的請求，做相應業務處理
     case 2://來自按鈕2的請求，做相應業務處理
  }
}

    --resultCode：

public class SendResult1 extends Activity {
    .....
    setResult(1, intent);
    return false;
    ......
}
public class SendResult2 extends Activity {
    ......
    setResult(2, intent);
    return false;
    ......
}
public class ReceiveResult extends Activity { 
  @Override 
  protected void 
  onActivityResult(int requestCode, int resultCode, Intent data) {
      switch(resultCode){
           case 1:// SendResult1的返回數據
             case 2:// SendResult2的返回數據
      }
  }
}

代碼數據引自：www.innovation-office.net 

點擊查看: startActivityForResult調用問題總結