ButterKnife - 绑定可绘制资源

Question

如何使用ButterKnife注释消除以下初始化代码？

private Drawable mExpandDrawable;
private Drawable mCollapseDrawable;

void init() {
    mExpandDrawable = getResources().getDrawable(R.drawable.ic_expand_small_holo_light);
    mCollapseDrawable = getResources().getDrawable(R.drawable.ic_collapse_small_holo_light);
}

Answer 1

使用ButterKnife 7 API中的@BindDrawable.

import butterknife.BindDrawable;

@BindDrawable(R.drawable.ic_expand_small_holo_light)
protected Drawable mExpandDrawable;
@BindDrawable(R.drawable.ic_collapse_small_holo_light)
protected Drawable mCollapseDrawable;

void init() {
    ButterKnife.bind(this);
}

其他资源类型有@ bindString,@ bindInt,@ bindDimen,@ LabelColor,@ LabelBool.