OverlayNotificationBarView.java 文件源码

private void setButton(Button button, Message message, int index) {
    List<Action> actions = message.getActions();
    if (index >= actions.size()) {
        button.setVisibility(View.GONE);
        return;
    }
    Action action = (Action) actions.get(index);
    button.setOnClickListener(null);
    button.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);
    button.setCompoundDrawablesRelativeWithIntrinsicBounds(0, 0, 0, 0);
    button.setVisibility(View.VISIBLE);
    Drawable icon = getActionIcon(message.getAppId(), action.icon);
    icon.setColorFilter(new LightingColorFilter(ViewCompat.MEASURED_STATE_MASK, 6914181));
    button.setCompoundDrawablesRelativeWithIntrinsicBounds(icon, null, null, null);
    button.setText(action.title);
}