自定义标题

public class MyView extends LinearLayout {

@BindView(R.id.back)
ImageView back;
@BindView(R.id.btn_fb)
Button btnFb;
@BindView(R.id.rel)
RelativeLayout rel;

public MyView(Context context, AttributeSet attrs) {
    super(context, attrs);
    View view = LayoutInflater.from(context).inflate(R.layout.myviwe, this, true);
    ButterKnife.bind(this, view);
    TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.MyView);
    int color = typedArray.getColor(R.styleable.MyView_bgcolor, Color.RED);
    rel.setBackgroundColor(color);

}

@OnClick({R.id.back, R.id.btn_fb})
public void onClick(View view) {
    switch (view.getId()) {
        case R.id.back:
            System.exit(0);
            break;
        case R.id.btn_fb:
            backs.bak();
            break;
    }
}
public interface Backs{
    void bak();
}
private Backs backs;
public void getBacks(Backs backs){
    this.backs = backs;
}

}