Android库项目中的资源ID冲突的解决方法

public void onButtonClick(View view) {
  switch (view.getId()) {
    case R.id.button_1:
      break;
    case R.id.button_2;
      break;
  }
} 

@OnClick(R.id.button_1)
public void onButtonClick(View view) { 

} 

// 库项目中生成的R类：
public final class R {
  public static final class id {
    public static int button_1 = 0x7f0c0001;
  }
}

// 主项目中生成的R类：
public final class R {
  public static final class id {
    public static final int text_1 = 2131165184;
  }
} 

// 主项目中的Activity：
public class MainActivity extends AppCompatActivity {
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // 源代码：setContentView(R.layout.activity_main);
    this.setContentView(2131296283);
  }
}

// 库项目中的Activity：
public LibActivity extends AppCompatActivity {
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    this.setContentView(R.layout.activity_lib);
  }
} 

@OnClick({R2.id.button_1, R2.id.button_2})
public void onButtonClick(View view) {
  int id = view.getId();
  if (id == R.id.button_1) {
    // ...
  } else if (id == R.id.button_2) {
    // ...
  }
} 

// 库项目中的R类：
public final class R {
  public static final class id {
    public static int button_1 = 0x7f0c0001;
  }
}

// 库项目中ButterKnife为我们生成的R2类：
public final class R2 {
  public static final class id {
    public static final int button_1 = 0x7f0c0001;
  }
}　　 

public class LibActivity_ViewBinding implements Unbinder { 
  private LibActivity target;
  private View view_button_1;
  private View view_button_2; 
  @UiThread
  public LibActivity_ViewBinding(final LibActivity target, View source) {
    this.target = target;
    View view = Utils.findRequiredView(source, R.id.button_1, "method 'onButtonClick'");
    this.view_button_1 = view;
    //view.setOnClickListener....
    view = Utils.findRequiredView(source, R.id.button_2, "method 'onButtonClick'");
    this.view_button_2 = view;
    //view.setOnClickListener....
  }
}