Question

我想知道是否有可能处理来自例如活动1中的活动2和活动3有一个onActivityResult()，或者每个返回数据的活动是否需要一个方法？

活动1是应用程序的主要活动。

活动1：

// Handle return value from activity
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == Activity.RESULT_OK) {
        String imageId = data.getExtras().getString("imageId");

        // Do something if data return from activity 2 ??

        // Do something if data return from activity 3 ??
    }
}

活动2

Intent intent = new Intent();
intent.putExtra("imageId", imagePath);
setResult(RESULT_OK, intent); 
finish();

活动3

Intent intent = new Intent();
intent.putExtra("contactId", data);
setResult(RESULT_OK, intent);
finish();

Answer 1

在活动1的startActivityForResult中设置requestCode：

致电活动2

Intent intent = new Intent(this, Activity2.class);
startActivityForResult(intent,10);

致电活动3

Intent intent = new Intent(this, Activity3.class);
startActivityForResult(intent,11);

现在，当您来onActivityResult检查requestCode

时

像：

 public void onActivityResult(int requestCode, int resultCode, Intent data)
 {

      super.onActivityResult(requestCode, resultCode, data);

       switch (requestCode) {

          case (10): 
          {
            // do this if request code is 10.
          }
          break;

          case (11):
          {
            // do this if request code is 11.
          }
          break;
  }

Answer 2

No confusion check result code and request code ..

示例：

private static final int TWO = 2;
private static final int THREE = 3;

startActivityForResult(new Intent(this,Activity2.class),TWO); // one for Activity 2
startActivityForResult(new Intent(this,Activity3.class),THREE);

和

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == Activity.RESULT_OK ) {
        if(requestCode == TWO) {
            // Activity two stuff
        } else if(requestCode == THREE) {
            // Activity three stuff
        }
    }
}

在一个onActivityResult（）中处理来自多个活动的数据？

2 个答案: