Easy using ViewStub to lazy inflate layout

ViewStubWidget.java

/**
 * Created by chensuilun on 16-9-20.
 */
public abstract class ViewStubWidget {
    private ViewGroup mParent;
    private int mStubId;
    private ViewStub mViewStub;
    private View mRoot;


    public ViewStubWidget(ViewGroup parent, int stubId) {
        mParent = parent;
        mStubId = stubId;
    }

    /**
     * 初始化控件
     */
    public void inflateWidget() {
        if (!isInflate()) {
            if (mViewStub == null) {
                mViewStub = (ViewStub) mParent.findViewById(mStubId);
            }
            mViewStub.inflate();
            mViewStub.setOnInflateListener(new ViewStub.OnInflateListener() {
                @Override
                public void onInflate(ViewStub stub, View inflated) {
                    mViewStub.setOnInflateListener(null);
                    mRoot = inflated;
                    initView(mParent, mRoot);
                }
            });
        }
    }

    /**
     * @param parent
     * @param self
     */
    public abstract void initView(ViewGroup parent, View self);

    /**
     * @return
     */
    public boolean isInflate() {
        return mRoot != null;
    }

    public boolean isShowing() {
        return mViewStub != null && mRoot != null && mRoot.isShown();
    }

    /**
     * 显示控件
     */
    public void show() {
        inflateWidget();
        if (mRoot != null && !mRoot.isShown()) {
            mRoot.setVisibility(View.VISIBLE);
        }
    }

    /**
     * 隐藏控件
     */
    public void hide() {
        if (mRoot != null && mRoot.isShown()) {
            mRoot.setVisibility(View.GONE);
        }
    }
}