CompoundButton radio tab切换器

TabSwitcher.java

/**
 * author:lsxiao
 * date:2017-03-23 18:47
 * github:https://github.com/lsxiao
 * zhihu:https://zhihu.com/people/lsxiao
 * <p>
 * tab切换器,用于解决CompoundButton不在一同一个父布局下的 radio tab 切换
 */

public class TabSwitcher {
    private SparseArrayCompat<CompoundButton> mButtons;
    private boolean mProtectFromCheckedChange = false;
    private int mCheckedId = -1;
    private OnTabCheckedChangedListener mListener;

    public TabSwitcher() {
        mButtons = new SparseArrayCompat<>();
    }

    public void init(View view, @IdRes int... ids) {
        if (view == null) {
            throw new NullPointerException("the view is null");
        }
        for (int id : ids) {
            if (view.findViewById(id) == null) {
                throw new IllegalArgumentException("can not find view with id " + id);
            }
            if (!(view.findViewById(id) instanceof CompoundButton)) {
                throw new IllegalArgumentException("the id is not of a compoundButton");
            }
            CompoundButton compoundButton = (CompoundButton) view.findViewById(id);
            add(id, compoundButton);
        }
    }

    private void add(@IdRes int id, final CompoundButton button) {
        mButtons.put(id, button);
        button.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                // 避免无限循环
                if (mProtectFromCheckedChange) {
                    return;
                }

                mProtectFromCheckedChange = true;
                if (mCheckedId != -1) {
                    mButtons.get(mCheckedId).setChecked(false);
                }
                mProtectFromCheckedChange = false;

                int id = buttonView.getId();
                setCheckedId(id);
                if (mListener != null) {
                    mListener.onTabCheckedChanged(buttonView, isChecked);
                }
            }
        });
    }

    public void checked(@IdRes int id) {
        if (mButtons.get(id) == null) {
            return;
        }
        if (mCheckedId != -1) {
            mButtons.get(mCheckedId).setChecked(false);
        }
        mButtons.get(id).setChecked(true);
        setCheckedId(id);
    }

    private void setCheckedId(@IdRes int checkedId) {
        mCheckedId = checkedId;
    }

    public void setListener(OnTabCheckedChangedListener listener) {
        mListener = listener;
    }

    public interface OnTabCheckedChangedListener {
        void onTabCheckedChanged(CompoundButton button, boolean isChecked);
    }
}