因为如果您查看AppCompat中的TintManager的源代码,您将看到:
/**
* Drawables which should be tinted with the value of {@code R.attr.colorControlNormal},
* using the default mode.
*/
private static final int[] TINT_COLOR_CONTROL_NORMAL = {
R.drawable.abc_ic_ab_back_mtrl_am_alpha,
R.drawable.abc_ic_go_search_api_mtrl_alpha,
R.drawable.abc_ic_search_api_mtrl_alpha,
R.drawable.abc_ic_commit_search_api_mtrl_alpha,
R.drawable.abc_ic_clear_mtrl_alpha,
R.drawable.abc_ic_menu_share_mtrl_alpha,
R.drawable.abc_ic_menu_copy_mtrl_am_alpha,
R.drawable.abc_ic_menu_cut_mtrl_alpha,
R.drawable.abc_ic_menu_selectall_mtrl_alpha,
R.drawable.abc_ic_menu_paste_mtrl_am_alpha,
R.drawable.abc_ic_menu_moreoverflow_mtrl_alpha,
R.drawable.abc_ic_voice_search_api_mtrl_alpha,
R.drawable.abc_textfield_search_default_mtrl_alpha,
R.drawable.abc_textfield_default_mtrl_alpha
};
/**
* Drawables which should be tinted with the value of {@code R.attr.colorControlActivated},
* using the default mode.
*/
private static final int[] TINT_COLOR_CONTROL_ACTIVATED = {
R.drawable.abc_textfield_activated_mtrl_alpha,
R.drawable.abc_textfield_search_activated_mtrl_alpha,
R.drawable.abc_cab_background_top_mtrl_alpha
};
/**
* Drawables which should be tinted with the value of {@code android.R.attr.colorBackground},
* using the {@link android.graphics.PorterDuff.Mode#MULTIPLY} mode.
*/
private static final int[] TINT_COLOR_BACKGROUND_MULTIPLY = {
R.drawable.abc_popup_background_mtrl_mult,
R.drawable.abc_cab_background_internal_bg,
R.drawable.abc_menu_hardkey_panel_mtrl_mult
};
/**
* Drawables which should be tinted using a state list containing values of
* {@code R.attr.colorControlNormal} and {@code R.attr.colorControlActivated}
*/
private static final int[] TINT_COLOR_CONTROL_STATE_LIST = {
R.drawable.abc_edit_text_material,
R.drawable.abc_tab_indicator_material,
R.drawable.abc_textfield_search_material,
R.drawable.abc_spinner_mtrl_am_alpha,
R.drawable.abc_btn_check_material,
R.drawable.abc_btn_radio_material
};
/**
* Drawables which contain other drawables which should be tinted. The child drawable IDs
* should be defined in one of the arrays above.
*/
private static final int[] CONTAINERS_WITH_TINT_CHILDREN = {
R.drawable.abc_cab_background_top_material
};
这几乎意味着他们将特定的resourceIds列入了白名单。
但是我想您总是可以看到它们如何着色这些图像并执行相同的操作。就像在可绘制对象上设置ColorFilter一样简单。