Android使用捆绑从另一个活动中检索onActivityResult上的结果 [英] Android retrieving result on onActivityResult from another activity using bundle

问题描述

大家好，如果您能帮助我的话.我被困在如何从另一个活动中检索捆绑数据的问题.基本上，我有两个活动，即当我在第一个活动上按下按钮时，它将继续在第二个活动上，然后设置字符串值，该字符串值稍后将传递给第一个活动.我所做的是我使用捆绑软件放置了字符串值.我的问题是，如何从第二个活动中获取(字符串的)捆绑值并将其返回到第一个活动中?这是我的代码:

Hello everyone if you would kindly help me. I'm stuck on how to retrieve the bundle data from another activity. Basically I have two activities which is that when I pressed a button on the first activity, it will go on the second activity and then sets the string values which is later on to be passed on the first activity. What I did was I used the bundle to put the string values. My question is that how can I get the bundle values (of strings) from the second activity and return it on to the first activity? Here is my code:

第一个活动(正在进行第二个活动):

button1.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivityForResult(new Intent(this,
                        SecondActivity.class), REQUEST_CODE_SAMPLE);
            }
        });

SecondActivity :(返回捆绑商品的价值)

button2.setOnClickListener(new OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Bundle b = new Bundle();
                        bundle.putString("A", "Aloha");
                        bundle.putString("B", "Bubbles");

            setResult(
                    Activity.RESULT_OK,
                    getIntent().putExtras(b));
                    }
                });
}

FirstActivity(用于检索捆绑商品值):

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    switch (requestCode) {
    case REQUEST_CODE_SAMPLE:
        if (resultCode == RESULT_OK) {
                bundle = getIntent().getExtras();
                //WHAT TO DO TO GET THE BUNDLE VALUES//
                String a = //STORE FIRST VALUE OF BUNDLE
                String b = //STORE SECOND VALUE OF BUNDLE
        }

        break;

    default:
        break;
    }
}

推荐答案

您需要执行以下操作:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
  case REQUEST_CODE_SAMPLE:
    if (resultCode == RESULT_OK) {
            Bundle bundle = data.getExtras();
            //WHAT TO DO TO GET THE BUNDLE VALUES//
            String a = bundle.getString("A");
            String b = bundle.getString("B");
      }
    break;
  }
}

但请注意，您必须使用传递给onActivityResult而不是getIntent

but take care, you must use the intent passed to the onActivityResult not getIntent

还需要在 SecondActivity 中使用新的意图:

Also in SecondActivity, you need to use a new intent:

button2.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    Bundle bundle= new Bundle();
                    bundle.putString("A", "Aloha");
                    bundle.putString("B", "Bubbles");

                    Intent returnIntent = new Intent();
                    returnIntent.putExtras(bundle);

                    setResult(Activity.RESULT_OK, returnIntent);
                }
            });
}

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