android - onActivityResult - resultCode 始终为 0

Question

我对 onActivityResult 有疑问，无论我在做什么，我都无法获得正确的 resultCode。

我知道有类似的问题，但最后他们没有帮助我，我无法解决

MainActivity: 将打开新 Activity Popup.class

的方法

public void openShopView(){
    Intent intent = new Intent(this, Popup.class);
    Bundle b = new Bundle();

    b.putString("which", "ShopMain");
    intent.putExtras(b);
    startActivityForResult(intent, 1);
}

第二个 Activity: 将打开另一个 Activity Popup.class 的方法，只是布局不同

shop_c1.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(getIntent());
            Bundle b = new Bundle();

            b.putString("which", "ShopBuildings");
            intent.putExtras(b);
            startActivity(intent);
            finish();
        }
    });

第三个 Activity: 还有一个方法应该设置结果并关闭 Activity

building2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Log.i("LOG_NEW: ", "" + getCurrentBuildingTable(1) + ", " + checkSlotTable(1));
            if(getCurrentBuildingTable(1) && checkSlotTable(1) == -1) {
                Intent returnIntent = getIntent();
                returnIntent.putExtra("result", 1);
                setResult(RESULT_OK, returnIntent);
                finish();
            }else if (checkSlotTable(1) == -1){
                Log.i("LOG_NEW: ", "Building already exist");
            }
            else{
                Log.i("LOG_NEW: ", "Not enough resources");
            }
        }
    });

最后是来自 MainActivity 的 onActivityResult()

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

    Log.i("LOG_RES: ", "Checking.. " + requestCode + ", " + resultCode);
    if (requestCode == 1) {
        if(resultCode == RESULT_OK){
            String result = data.getStringExtra("result");
            Log.i("LOG_RES: ", result);

        }
    }
}

无论我在做什么，我都无法启动 if(resultCode == RESULT_OK) 循环并且 resultCode 始终为 0..

感谢帮助

Answer 1

setResult 必须在 Second Activity 中调用，因为第二个 Activity 的 Intent 已在 startActivityForResult 中传递。

但是，您可以将第三个 Activity 的结果代码委托(delegate)给第二个 Activity ，然后再委托(delegate)给第三个。

将您的第二个 Activity 更改为如下内容:

shop_c1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(getIntent());
                Bundle b = new Bundle();

                b.putString("which", "ShopBuildings");
                intent.putExtras(b);
                startActivityForResult(intent,1);
                //Remove finish from here
            }
        });

然后在 Second Activity 中也添加这个

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if(requestCode==1){
    setResult(resultCode,data);
    }

    finish();
}