在Adapter类中调用自定义对话框 [英] Call custom dialog in Adapter class

问题描述

我已经创建了一个简单的自定义对话框类，我想在 RecycleView 中单击一行后显示它。
我的对话框类看起来是：

I have created a simple Custom dialog class and I want to display it after clicking on a row in RecycleView. My dialog class looks:

public class AddToQueueDialog extends Dialog implements View.OnClickListener {

 Activity mActivity;
private TextView textView1;
private TextView textView2;
private Button save;

public AddToQueueDialog(Activity activity){
    super(activity);
    mActivity = activity;
}

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.add_to_queue);
        textView1 = (TextView) findViewById(R.id.textView5);
        textView2 = (TextView) findViewById(R.id.textView6);
        save = (Button) findViewById(R.id.button4);
        save.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        if(v.getId() == save.getId()){
            Log.d("save", "save");
        }
    }
}

我想知道如何正确调用 RecycleView 的 adapter ，其外观为：
（件）

And I'm wondering how to properly call in adapter of RecycleView which looks: (piece)

   public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {       
        public ViewHolder(Context context, View itemView, List<WashLocation> washLocations) {
            super(itemView);
            this.context = context;
            info = (TextView) itemView.findViewById(R.id.textView);
            favorite = (Button) itemView.findViewById(R.id.addToFav);
            favorite.setOnClickListener(this);
            info.setOnClickListener(this);
            this.washLocations = washLocations;
            dataBaseHelper = new DataBaseHelper(context);
        }

        @Override
        public void onClick(View v) {
            if(v.getId() == info.getId()){
                AddToQueueDialog addToQueueDialog = new AddToQueueDialog(MapsActivity.this);
                addToQueueDialog.show();
            }

在我的自定义对话框中类我需要在arg中使用 Activity 作为构造函数，但我不知道我应该在其中传递哪个 Activity 适配器类

In my Custom dialog class I need an Activity in arg as a constructor but I don't know which Activity should I pass there in Adapter class

推荐答案

只需传递上下文当前 Activity 中的到 Adapter 类中，并在创建实例时使用 AddToQueueDialog 。

Just pass the context of your current Activity to your Adapter class and use it when you are creating an instance of AddToQueueDialog.

例如：

MainActivity.java

MainActivity.java

public class MainActivity extends AppCompatActivity {

    Context mContext;

    // Views
    RecyclerView mRecyclerView;

    // Values
    List<Recipe> mRecipeList;

    // Adapter
    RecipeAdapter mAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        mContext = this;

        // Views
        mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);

        .................
        ..........................

        // Values
        mRecipeList = new ArrayList<Recipe>();

        // Adapter
        mAdapter = new RecipeAdapter(mContext, mRecipeList);

        // Set adapter to RecyclerView
        mRecyclerView.setAdapter(mAdapter);

        .................
        ..........................
   }
}  

RecipeAdapter.java

RecipeAdapter.java

public class RecipeAdapter extends RecyclerView.Adapter<RecipeAdapter.ViewHolder> {

    Context mContext;
    LayoutInflater mInflater;

    // List
    List<Recipe> mRecipeList;

    public GroupListAdapter(Context context, List<Recipe> listRecipe) {

        this.mContext = context;
        this.mRecipeList = listRecipe;

        mInflater = LayoutInflater.from(mContext);
    }

    .....................
    ...............................

    public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {       

        public ViewHolder(View itemView) {
            super(itemView);
            info = (TextView) itemView.findViewById(R.id.textView);
            favorite = (Button) itemView.findViewById(R.id.addToFav);

            favorite.setOnClickListener(this);
            info.setOnClickListener(this);
        }

        @Override
        public void onClick(View v) {
            if(v.getId() == info.getId()){
                AddToQueueDialog addToQueueDialog = new AddToQueueDialog(mContext);
                addToQueueDialog.show();
            }
       }
    }

    ............
    ......................
}

希望这会有所帮助〜

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