Use of butterknife in android app development

1. ButterKnife

2. FEATURES OF BUTTERKNIFE
• Bind View using annotation @BindView
• Resource binding
• Non-activity binding
• Listener binding
• Binding reset

3. DOWNLOAD
compile 'com.jakewharton:butterknife:7.0.1'
apt 'com.jakewharton:butterknife-compiler:8.2.1'

4. Activity class before ButterKnife
public class MainActivity extends AppCompatActivity {
private TextView textViewUserName;
private TextView textViewPassword;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textViewUserName=findViewById(R.id.textViewUserName);
textViewPassword=findViewById(R.id.textViewPassword);
}
}

5. Activity class after ButterKnife
public class MainActivity extends AppCompatActivity {
@BindView(R.id.textViewUserName)
private TextView textViewUserName;
@BindView(R.id.textViewPassword)
private TextView textViewPassword;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this)
}
}