Android ViewBinding Library

A simple library to simplify viewbinding delegation in your Android Application

Adding dependencies

Add this to your build.gradle:

allprojects {
	repositories {
		...
		maven { url 'https://jitpack.io' }
	}
}

enable viewbinding in your app/build.gradle:

android {
    ....
    buildFeatures {
        viewBinding true
    }
}

Add the dependencies in your app/build.gradle:

dependencies {
    ....
    implementation 'com.github.yogacp:android-viewbinding:x.x.x'
}

How to use the library

Create your regular XML layout. For example, create activity_sample.xml:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center">

    <TextView
        android:id="@+id/tvTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/app_name"
        android:layout_marginBottom="16dp"/>

    <Button
        android:id="@+id/btnSample"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/app_name"
        android:textStyle="bold"/>

        ....
</LinearLayout>

And use it in your Activity, just extend an binding variable that extend to your generated binding view and add by viewBinding() at the end:

class SampleActivity : AppCompatActivity() {

    private val binding: ActivitySampleBinding by viewBinding()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        binding.tvTitle.text = getString(R.string.sample_title)

        binding.btnSample.setOnClickListener {
            Toast.makeText(this, "Sample Button Clicked", Toast.LENGTH_SHORT).show()
        }
        ....
    }
}

And here if you want to use it in your Fragment. For example, you create a xml layout with name fragment_sample.xml:

class SampleFragment : Fragment(R.layout.fragment_sample) {

    private val binding: FragmentSampleBinding by viewBinding()

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        binding.tvFragmentTitle.text = getString(R.string.sample_fragment_title)
        binding.btnFragmentSample.setOnClickListener {
            Toast.makeText(context, "Sample Fragment Button Clicked", Toast.LENGTH_SHORT).show()
        }

        ....
    }
}

And here if you want to use it in your BottomSheetDialogFragment. For example, you create a xml layout with name bottomsheet_sample.xml:

class SampleBottomSheetDialogFragment : BottomSheetDialogFragment() {

    private val binding: BottomsheetSampleBinding by viewBinding()

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
        return binding.root //return root from binding delegation
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        binding.tvFragmentTitle.text = getString(R.string.sample_fragment_title)
        binding.btnClose.setOnClickListener {
            Toast.makeText(context, "Sample BottomSheetDialog Button Clicked", Toast.LENGTH_SHORT).show()
        }

        ....
    }
}

And here if you want to use it in your DialogFragment. For example, you create a xml layout with name dialog_sample.xml:

class SampleDialogFragment : DialogFragment() {

    private val binding: DialogSampleBinding by viewBinding()

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
        return binding.root //return root from binding delegation
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        binding.tvTitle.text = getString(R.string.sample_fragment_title)
        binding.btnClose.setOnClickListener {
            Toast.makeText(context, "Sample Dialog Button Clicked", Toast.LENGTH_SHORT).show()
        }

        ....
    }
}

If you using proguard, add this line to your proguard-rules.pro.

#ViewBinding
-keep class * implements androidx.viewbinding.ViewBinding {
    public static *** bind(android.view.View);
    public static *** inflate(android.view.LayoutInflater);
}

Happy coding :)