android studio recyclerview import not there

Why Can't I Find RecyclerView Import in Android Studio?

If you are using Android Studio and trying to add a RecyclerView with checkboxes, you may encounter a frustrating issue: the import for RecyclerView is not available. This problem is often caused by some recently installed plug-ins or dependencies.

I've experienced this issue myself, and after reviewing my previous projects, I realized that the import was not added initially in one of them. Fortunately, it compiled successfully without any issues. In this tutorial, we will explore how to implement RecyclerView with checkboxes in Android Studio.

Step 1: Add Dependencies

To start using RecyclerView with checkboxes, you need to add the necessary dependencies to your build.gradle file. You can do this by adding the following lines:

```

implementation 'com.android.support:recyclerview-v7:27.1.1'

testImplementation 'androidx.test.runner.AndroidJUnitRunner'

testImplementation 'androidx.test.espresso:espresso-core:3.0.2'

implementation 'com.android.support.constraint:constraint-layout:1.1.2'

implementation fileTree(dir: 'libs', include: '')

proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'

```

Step 2: Create a ViewHolder

To display your data in RecyclerView, you need to create a ViewHolder class that will hold the views for each item. This class should extend Android's RecyclerView.ViewHolder.

Here is an example of how you can define your ViewHolder:

```java

public class MyViewHolder extends RecyclerView.ViewHolder {

public TextView textView;

public CheckBox checkBox;

public MyViewHolder(View itemView) {

super(itemView);

textView = (TextView) itemView.findViewById(R.id.text_view);

checkBox = (CheckBox) itemView.findViewById(R.id.check_box);

}

```

Step 3: Create an Adapter

To bind your data to the RecyclerView, you need to create a RecyclerView.Adapter class. This class should override three methods: onCreateViewHolder(), onBindViewHolder(), and getItemCount().

Here is an example of how you can define your adapter:

```java

public class MyAdapter extends RecyclerView.Adapter {

@Override

public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_layout, parent, false);

return new MyViewHolder(view);

}

@Override

public void onBindViewHolder(MyViewHolder holder, int position) {

// Bind your data to the views here

}

@Override

public int getItemCount() {

return myList.size();

}

```

Step 4: Set Up RecyclerView

Finally, you need to set up your RecyclerView in your activity or fragment. You can do this by inflating a layout that contains a RecyclerView and setting the adapter:

```java

RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recycler_view);

recyclerView.setLayoutManager(new LinearLayoutManager(this));

MyAdapter adapter = new MyAdapter();

recyclerView.setAdapter(adapter);

```

That's it! With these steps, you should now be able to use RecyclerView with checkboxes in your Android app.

Android studio recyclerview import not there