Binding Not Found

[Oliver-Binns]

I am getting numerous null pointer exceptions from ButterKnife failing to bind views into Java. I guess the binding might not be being generated? Please can you help me find steps to fix this issue?

From the Logs:

D/ButterKnife: Looking up binding for com.littlesparkshospital.littletrial.activities.MainActivity
D/ButterKnife: Not found. Trying superclass androidx.appcompat.app.AppCompatActivity

XML:

<RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_toLeftOf="@+id/family_image"
                android:layout_toRightOf="@+id/setting_image"
                android:id="@+id/map_container">

Java:

@BindView(R.id.map_container)
RelativeLayout mapContainer;

I am using version 10.1.0 of butterknife:

implementation 'com.jakewharton:butterknife:10.1.0'
annotationProcessor 'com.jakewharton:butterknife-compiler:10.1.0'

It looks like the MainActivity_ViewBinding.java is being generated as I would have expected, so I guess that the library can't find this generated code at runtime? :/

// Generated code from Butter Knife. Do not modify!
package com.littlesparkshospital.littletrial.activities;

import android.view.View;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import androidx.annotation.CallSuper;
import androidx.annotation.UiThread;
import butterknife.Unbinder;
import butterknife.internal.DebouncingOnClickListener;
import butterknife.internal.Utils;
import com.littlesparkshospital.littletrial.R;
import java.lang.IllegalStateException;
import java.lang.Override;

public class MainActivity_ViewBinding implements Unbinder {
  private MainActivity target;

  private View view7f090184;

  private View view7f090080;

  @UiThread
  public MainActivity_ViewBinding(MainActivity target) {
    this(target, target.getWindow().getDecorView());
  }

  @UiThread
  public MainActivity_ViewBinding(final MainActivity target, View source) {
    this.target = target;

    View view;
    target.mapContainer = Utils.findRequiredViewAsType(source, R.id.map_container, "field 'mapContainer'", RelativeLayout.class);
    view = Utils.findRequiredView(source, R.id.setting_image, "field 'setting_image' and method 'openSettings'");

[juanagu]

Same problem, any solution?

[Daniate]

Did you call ButterKnife.bind(xxx) after inflate？

setContentView(R.layout.activity_login);
unbinder = ButterKnife.bind(this);

[a120476536]

绑定一会空，一会不空，我太难了。

[danielwilson1702]

This is weird, I get the same after upgrading from 8.7.0 to 10.2.0 and migrating to AndroidX.

Edit: Note there is an issue located here on this. #1571

[gongshoudao]