从其他应用程序导航时如何通知 recyclerview 适配器更改

Question

已在我的 activity

上初始化 RecyclerView

private RecyclerView listView;

private ListCardAdapter listCardAdapter;

private Subscription subscription;

@Override
protected void onCreate(Bundle savedInstanceState) {

    listView = findViewById(R.id.subscription_list);

    LinearLayoutManager layoutManager = new LinearLayoutManager(this);

    layoutManager.setOrientation(RecyclerView.VERTICAL);

    listView.setLayoutManager(layoutManager);

    listCardAdapter= new ListCardAdapter(getApplicationContext());

    listCardAdapter.setOnItemClickListener(this);

    listCardAdapter.setAdapter(subscriptionListCardAdapter);

    getPurchases(); //runs a service and sets subscription value and calls back onSkuDetails

}

@Override
public void onSkuDetails(List<SkuDetails> skuDetails) {

    removeProgressDialog();

    listCardAdapter.setData(subscription, skuDetails);

}

//ListCardAdapter 
public void setData(Subscription subscription, List<SkuDetails> skuDetailsList) {

    this.subscription = subscription;

    this.skuDetailsList = skuDetailsList;

    notifyDataSetChanged();
}

当用户在我的 activity 上选择一个按钮时，它会调用一个方法并回调 onSkuDetails，然后它会更新适配器的数据，然后您将在项目列表中看到更改.

其中一个按钮将启动 google play store app 并导航到用户的订阅页面，用户取消订阅，当用户单击返回按钮直到他返回应用程序时，它将调用 onSkuDetails，之后，recyclerview 适配器不会触发导致项目不更新的 onBindViewHolder，这仅在从其他应用程序（Play 商店）导航时发生，但当我尝试从屏幕上下拉（刷新）时，它将调用 onBindViewHolder 然后更新项目列表。

Answer 1

运行 notifyDataSetChanged() onUIthread.

private void notifyAdapterDataSetChanged() {

        this.runOnUiThread(new Runnable() {
            @Override
            public void run() {

                subscriptionListCardAdapter.notifyDataSetChanged();
            }
        });
    }

从其他应用程序导航时如何通知 recyclerview 适配器更改

How to notify recyclerview adapter changes when navigating from other app

java

android

android-recyclerview

androidx