Question

我想将一个项目从自定义ListView发送到另一个ListView。我已经标记了我的意图并使StoreListAdapter类可序列化以尝试修复问题。在清单中放置android：launchmode =“singleTop”也没有用。

这肯定是我的代码。我对Android没有经验。

当我尝试从我的应用程序的主页面打开我的收藏页面时，它会崩溃，当我添加一个收藏夹时，它会添加一个，但不是正确的。然后我突然可以访问最喜欢的页面！我不知道发生了什么。

currentItem是StoreItemInfo的一个实例，我尝试将其发送到另一个ListView。谁能告诉我我做错了什么以及为什么？

我的SearchActivity类（浏览商店，这个类有效）：

private void populateStoreListView() {
    ArrayAdapter<StoreItemInfo> adapter= new StoreListAdapter();
    ListView storeMenuList = (ListView) findViewById(R.id.listViewStores);
    storeMenuList.setAdapter(adapter);
}
    private class StoreListAdapter extends ArrayAdapter<StoreItemInfo> implements Serializable {
        public StoreListAdapter() {
            super(SearchActivity.this, R.layout.list_item_layout, storeList);
        }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {

        View storeItemView = convertView; // the view which has to be shown
            if (storeItemView == null) { // if the view somehow isn't there, create it
              storeItemView = getLayoutInflater().inflate(R.layout.list_item_layout, parent, false);
            }

        currentItem = storeList.get(position); // gets item from ArrayList with stores

        TextView nameTxt = (TextView) storeItemView.findViewById(R.id.txtName);
        nameTxt.setText(currentItem.getStoreName());

        TextView addressTxt = (TextView) storeItemView.findViewById(R.id.txtAddress);
        addressTxt.setText(currentItem.getStoreAddress());

        TextView cityTxt = (TextView) storeItemView.findViewById(R.id.txtCity);
        cityTxt.setText(currentItem.getStoreCity());

        ImageView storePhoto = (ImageView) storeItemView.findViewById(R.id.imgStore);
        storePhoto.setImageResource(currentItem.getStorePhoto());

        final ImageButton favBtn = (ImageButton) storeItemView.findViewById(R.id.btnFavorite);
        favBtn.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) { // here probably something went wrong
                String message = "Your pos is: " + position;
                Toast.makeText(SearchActivity.this, message, Toast.LENGTH_SHORT).show();
                Intent addFavorite = new Intent(SearchActivity.this, FavoritesActivity.class);
                addFavorite.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
                addFavorite.putExtra("storeItem", currentItem);
                startActivity(addFavorite);
            }
        });

        return storeItemView;
    }
}

收藏夹类：

public class FavoritesActivity extends BaseActivity {




@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_favorites);
    processIntent();
}

private void processIntent() {
    Intent intent = getIntent();
    StoreItemInfo receivedItem = (StoreItemInfo) intent.getSerializableExtra("storeItem");
    favoriteList.add(receivedItem);
    populateStoreListView();
}

@Override
protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);
    intent = getIntent();

}

private void populateStoreListView() {
    ArrayAdapter<StoreItemInfo> adapter= new StoreListAdapter();
    ListView storeMenuList = (ListView) findViewById(R.id.favoriteListView);
    storeMenuList.setAdapter(adapter);
}

现在我最喜欢的课程应该怎么做？我有相同的适配器和布局。它必须能够将多个商店添加到收藏列表中。

Android开发：将自定义ListView项发送和检索到另一个活动？

0 个答案: