java - 关闭对话框后如何从对话框中获取数据？

Question

我尝试将对话框中的数据获取到 TextView 中，但出现应用程序无法看到 TextView 的错误，因为 TextView 位于对话框后面...我点击按钮后就会出现

backpackDialog = new Dialog(MainActivity.this);
backpackDialog.setTitle("Backpack"); 
backpackDialog.setContentView(R.layout.backpack_layout); 
window = backpackDialog.getWindow(); 
lp.copyFrom(window.getAttributes()); 
lp.width = WindowManager.LayoutParams.MATCH_PARENT; 
lp.height = WindowManager.LayoutParams.WRAP_CONTENT; 
window.setAttributes(lp); 
backpackDialog.show(); 

// and after i click to dissmis the dialog...
useItemButton.setOnClickListener(new View.OnClickListener() 
{ @Override public void onClick(View view) 
  {  
     // here is the problem...
     intPlayerHealth = intPlayerHealth + 20;
     ->playerHealthText.setText(intPlayerHealth);<-
     backpackDialog.dismiss();
  } 
});

在我关闭对话框以重新启动 Activity 或类似的操作以刷新我的主要 Activity 布局后，我该如何进行操作，这样我就可以获得我的textView的新值，并且也不会出现无法执行的错误参见textView，谢谢

Answer 1

写起来很简单 official documentation

@Override
public void onDismiss(@NonNull DialogInterface dialog) {
    // here is the problem...
    // You can write you action here
    super.onDismiss(dialog);
}