禁用CollapsingToolbarLayout [英] Disable CollapsingToolbarLayout

问题描述

我的应用程序提供了不同的内容，其中一些与图像有关，而另一些则与图像无关. 对于那些使用我使用CollapsingToolbarLayout的图像，它可以正常工作，但是对于那些我不想要图像的图像，我可以折叠CollapsingToolbarLayout并防止扩展，将其禁用.

这是我的商品活动代码:

public class ItemActivity extends BaseActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_item);

        collapsingToolbar = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
        collapsingToolbar.setStatusBarScrimResource(R.color.black_transparent_190);
        collapsingToolbar.setContentScrimResource(R.color.gray_transparent_150);
        collapsingToolbar.setExpandedTitleTextAppearance(R.style.MyTheme_Toolbar_Title_Expanded);

        appBarLayout = (AppBarLayout) findViewById(R.id.appbar);
        appBarLayout.setExpanded(false);
        loadData();
    }

    public void loadData() {
        if(haveImage) {
          // loading data and image
          appBarLayout.setExpanded(true, true);
        } else {
          appBarLayout.setExpanded(false);
        }
    }
}

我已经尝试过

AppBarLayout.LayoutParams params = (AppBarLayout.LayoutParams) collapsingToolbar.getLayoutParams();
params.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_EXIT_UNTIL_COLLAPSED);
collapsingToolbar.setLayoutParams(params);

和

CollapsingToolbarLayout.LayoutParams mParams = new CollapsingToolbarLayout.LayoutParams(collapsingToolbar.getLayoutParams());
mParams.setCollapseMode(CollapsingToolbarLayout.LayoutParams.COLLAPSE_MODE_OFF);
mToolbar.setLayoutParams(mParams);

它起作用了，可以防止崩溃！ 但是折叠工具栏已展开！

如何折叠工具栏并将其禁用以进行滚动事件?

解决方案

您可以像往常一样在appBarLayout上使用setExpanded(false)，但是您需要按以下方式创建自定义的CollapsingToolbarLayout

我在链接中遵循了这个想法./p>

覆盖CollapsingToolbarLayout并覆盖dispatchTouchEvent返回真像这样

public class MyCustomCollapsingToolbarLayout extends CollapsingToolbarLayout {

    public MyCustomCollapsingToolbarLayout(Context context) {
        super(context);
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        return true;
    }
}

my application provide different contents, some of them is with image and others not. For those which have image i am using CollapsingToolbarLayout it works fine but for those which have not image I want collapse CollapsingToolbarLayout and prevent expanding, disable it.

Here is my item activity code:

public class ItemActivity extends BaseActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_item);

        collapsingToolbar = (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
        collapsingToolbar.setStatusBarScrimResource(R.color.black_transparent_190);
        collapsingToolbar.setContentScrimResource(R.color.gray_transparent_150);
        collapsingToolbar.setExpandedTitleTextAppearance(R.style.MyTheme_Toolbar_Title_Expanded);

        appBarLayout = (AppBarLayout) findViewById(R.id.appbar);
        appBarLayout.setExpanded(false);
        loadData();
    }

    public void loadData() {
        if(haveImage) {
          // loading data and image
          appBarLayout.setExpanded(true, true);
        } else {
          appBarLayout.setExpanded(false);
        }
    }
}

I have already tried

AppBarLayout.LayoutParams params = (AppBarLayout.LayoutParams) collapsingToolbar.getLayoutParams();
params.setScrollFlags(AppBarLayout.LayoutParams.SCROLL_FLAG_SCROLL | AppBarLayout.LayoutParams.SCROLL_FLAG_EXIT_UNTIL_COLLAPSED);
collapsingToolbar.setLayoutParams(params);

and

CollapsingToolbarLayout.LayoutParams mParams = new CollapsingToolbarLayout.LayoutParams(collapsingToolbar.getLayoutParams());
mParams.setCollapseMode(CollapsingToolbarLayout.LayoutParams.COLLAPSE_MODE_OFF);
mToolbar.setLayoutParams(mParams);

It works, it's prevent collapsing! But collapsing toolbar is expanded!

How can I collapse toolbar and disable it for scrolling events?

解决方案

You use setExpanded(false) on appBarLayout as normal, but you need to create a custom CollapsingToolbarLayout as below

I followed the idea in this link.

Override CollapsingToolbarLayout and override dispatchTouchEvent returning true like this

public class MyCustomCollapsingToolbarLayout extends CollapsingToolbarLayout {

    public MyCustomCollapsingToolbarLayout(Context context) {
        super(context);
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        return true;
    }
}

这篇关于禁用CollapsingToolbarLayout的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！