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  3. android.databinding.BindingAdapter

Java 类android.databinding.BindingAdapter 实例源码

项目：Flubber    文件：BindingAdapters.java    
@BindingAdapter({"checked", "model"})
public static <T> void setChecked(RadioButton radioButton, final ObservableField<T> checked, final T model) {

    if (checked == null) {
        return;
    }

    radioButton.setOnCheckedChangeListener(
            (buttonView, isChecked) -> {
                if ((checked.get() == null || !checked.get().equals(model))
                        && isChecked) {

                    checked.set(model);
                }
            });

    final T checkedModel = checked.get();
    final boolean shouldBeChecked = checkedModel != null && checkedModel.equals(model);

    if (shouldBeChecked != radioButton.isChecked()) {
        radioButton.setChecked(shouldBeChecked);
    }
}
项目：Flubber    文件：BindingAdapters.java    
@BindingAdapter("model")
public static void bindToModel(DiscreteSeekBar seekBar, final SeekBarModel model) {
    DiscreteSeekBar.NumericTransformer transformer = seekBar.getNumericTransformer();

    if (!(transformer instanceof NumericTransformer)) {
        transformer = new NumericTransformer();
        seekBar.setNumericTransformer(transformer);
    }

    final NumericTransformer customTransformer = (NumericTransformer) transformer;
    customTransformer.setValues(model.getMinValue(), model.getMaxValue());

    seekBar.setMin(0);
    seekBar.setMax(100);

    final int percentage = (int) customTransformer.transformToPercentage(model.getValue().get());
    // Bug in the library
    seekBar.setProgress(1);
    seekBar.setProgress(percentage);

    seekBar.setOnProgressChangeListener(
            SimpleOnProgressChangeListener.forStopTrackingTouch(seekBar1 -> {
                model.getValue().set(customTransformer.transformFromPercentage(seekBar.getProgress()));
            }));
}
项目：LiteReader    文件：BaseBindingAdapter.java    
@BindingAdapter("elevation")
public static void elevationBoolean(View view, boolean elevation) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP && elevation) {
        view.setElevation(view.getContext().getResources().getInteger(R.integer.common_elevation));
    } else {
        jLogger.w("Sorry, the system version of the device is under API 21, elevation will take no effect.");
    }
}
项目：LiteReader    文件：BaseBindingAdapter.java    
@BindingAdapter("android:visibility")
public static void setVisibility(View view, int visibility) {
    switch (visibility) {
        case 0:
            view.setVisibility(View.VISIBLE);
            break;
        case 4:
            view.setVisibility(View.INVISIBLE);
            break;
        case 8:
            view.setVisibility(View.GONE);
            break;
        default:
            view.setVisibility(View.GONE);
            break;
    }
}
项目：exchange-rates-mvvm    文件：LineChartExtensions.java    
@BindingAdapter({"bind:items"})
public static void populateDiagram(LineChart view, List<SingleValue> items) {

    if (null == items || items.size() == 0) {
        return;
    }
    List<Entry> entries = new ArrayList<>();
    for (int i = 0; i < items.size(); i++) {
        final SingleValue item = items.get(i);
        final Entry entry = new Entry(i, (float) item.getValue(), item);
        entries.add(entry);
    }
    LineDataSet dataSet = new LineDataSet(entries, view.getContext().getString(R.string.currency_value));
    LineData lineData = new LineData(dataSet);

    formatXAxisLabels(view, items);
    view.setData(lineData);
    view.invalidate();
}
项目：bikedeboa-android    文件：BindingAdapters.java    
@BindingAdapter({"imageAddress"})
public static void loadImage(final ImageView imageView, final String imageAddress) {

    if (imageAddress != null && imageAddress.startsWith("https://s3.amazonaws.com/bikedeboa/")) {

        Context context = imageView.getContext();
        // Hopefully the thumbnail is already disk cached and no requests are made
        DrawableRequestBuilder<String> thumbnailRequest = Glide
                .with(context)
                .load(imageAddress.replace("images/", "images/thumbs/"))
                .diskCacheStrategy(DiskCacheStrategy.ALL)
                .override(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL)
                .transform(new BlurTransformation(context));

        Glide.with(context)
                .load(imageAddress)
                .thumbnail(thumbnailRequest)
                .crossFade()
                .diskCacheStrategy(DiskCacheStrategy.SOURCE)
                .priority(Priority.HIGH)
                .into(imageView);
    }
}
项目：MVVM-JueJin    文件：ViewGroupAdapter.java    
/**
 * (伪)双向 databinding: 同 {@link RecyclerViewAdapter#setDataTwoWay(RecyclerView, ListVM, List)}
 *
 * @param container
 * @param vm
 * @param datas
 * @param <T>
 */
@BindingAdapter({"vm", "data"})
public static <T> void setDataTwoWay(final ViewGroup container, final ListVM<T> vm, List<T> datas){
    if(vm == null){
        return ;
    }
    bind(container, vm, datas);

    if(vm instanceof TwoWayListVM){
        boolean isInited = container.getTag(R.id.db_inited) != null;
        if(!isInited) {
            container.setTag(R.id.db_inited, true);
            loadData(container, (TwoWayListVM<T>)vm, null, null);
        }
    }
}
项目：OpenYOLO-Android    文件：DataBindingAdapters.java    
/**
 * Facilitates binding editor action listeners on EditText fields.
 */
@BindingAdapter("onEditorAction")
public static void setOnEditorActionListener(
        EditText layout,
        TextView.OnEditorActionListener listener) {
    layout.setOnEditorActionListener(listener);
}
项目：Discover    文件：DatabindingUtil.java    
@BindingAdapter("circleImageUrl")
public static void setCircleImage(CircleImageView view, String url) {
    Glide.with(view.getContext()).load(url)
            .crossFade(800)
            .dontAnimate()
            .placeholder(R.drawable.cross_image)
            .error(R.drawable.close_press)
            .into(view);
    /*Glide.with(view.getContext()).load(url)
            .asBitmap()
            .placeholder(R.drawable.cross_image)
            .error(R.drawable.close_press)
            .into(new BitmapImageViewTarget(view) {
                @Override
                protected void setResource(Bitmap resource) {
                    super.setResource(resource);
                    RoundedBitmapDrawable circleImage = RoundedBitmapDrawableFactory.create(view.getResources(), resource);
                    circleImage.setCircular(true);
                    view.setImageDrawable(circleImage);
                }
            });*/
}
项目：RetrofitSample    文件：DataBindingAdapter.java    
@BindingAdapter(value = {"imageUrl", "defaultImg", "radius"}, requireAll = false)
public static void setImage(ImageView imageView, String imageUrl, Drawable defaultImg, int radius) {
    DrawableRequestBuilder drawableTypeRequest = Glide.with(imageView.getContext()).load(imageUrl).crossFade();
    if (defaultImg != null) {
        drawableTypeRequest.placeholder(defaultImg).error(defaultImg);
    } else {
        drawableTypeRequest.placeholder(R.drawable.bg_defautl_imageview).error(R.drawable.bg_defautl_imageview);
    }
    if (radius > 0) {
        drawableTypeRequest.bitmapTransform(new CenterCrop(imageView.getContext()),
                new RoundedCornersTransformation(imageView.getContext(), PixelUtil.dp2px(radius), 0));
    } else {
        drawableTypeRequest.bitmapTransform(new CenterCrop(imageView.getContext()));
    }
    drawableTypeRequest.into(imageView);
}
项目：ClouldReader    文件：ImgLoadUtil.java    
/**
 * 电影详情页显示电影图片(等待被替换)（测试的还在，已可以弃用）
 * 没有加载中的图
 */
@BindingAdapter("android:showImg")
public static void showImg(ImageView imageView, String url) {
    Glide.with(imageView.getContext())
            .load(url)
            .crossFade(500)
            .error(getDefaultPic(0))
            .into(imageView);
}
项目：ClouldReader    文件：ImgLoadUtil.java    
/**
 * 书籍列表图片
 */
@BindingAdapter("android:showBookImg")
public static void showBookImg(ImageView imageView, String url) {
    Glide.with(imageView.getContext())
            .load(url)
            .crossFade(500)
            .override((int) CommonUtils.getDimens(R.dimen.book_detail_width), (int) CommonUtils.getDimens(R.dimen.book_detail_height))
            .placeholder(getDefaultPic(2))
            .error(getDefaultPic(2))
            .into(imageView);
}
项目：AndroidModules-Samples    文件：BindingAdapters.java    
@BindingAdapter("src")
public static void setImageSrc(ImageView view, File file) {
    if (file != null) {
        Glide.with(view).load(file).into(view);
    } else {
        Glide.with(view).clear(view);
    }
}
项目：data-binding-validator    文件：LengthBindings.java    
@BindingAdapter(value = {"validateMinLength", "validateMinLengthMessage", "validateMinLengthAutoDismiss"}, requireAll = false)
public static void bindingMinLength(TextView view, int minLength, String errorMessage, boolean autoDismiss) {
    if (autoDismiss) {
        EditTextHandler.disableErrorOnChanged(view);
    }

    String handledErrorMessage = ErrorMessageHelper.getStringOrDefault(view,
            errorMessage, R.string.error_message_min_length, minLength);
    ViewTagHelper.appendValue(R.id.validator_rule, view, new MinLengthRule(view, minLength, handledErrorMessage));
}
项目：GitHub    文件：CommentViewModel.java    
@BindingAdapter("containerMargin")
public static void setContainerMargin(View view, boolean isTopLevelComment) {
    if (view.getTag() == null) {
        view.setTag(true);
        ViewGroup.MarginLayoutParams layoutParams = (ViewGroup.MarginLayoutParams)
                view.getLayoutParams();
        float horizontalMargin = view.getContext().getResources().getDimension(R.dimen.activity_horizontal_margin);
        float topMargin = isTopLevelComment
                ? view.getContext().getResources().getDimension(R.dimen.activity_vertical_margin) : 0;
        layoutParams.setMargins((int) horizontalMargin, (int) topMargin, (int) horizontalMargin, 0);
        view.setLayoutParams(layoutParams);
    }
}
项目：GitHub    文件：ImgLoadUtil.java    
/**
 * 电影详情页显示电影图片(等待被替换)（测试的还在，已可以弃用）
 * 没有加载中的图
 */
@BindingAdapter("android:showImg")
public static void showImg(ImageView imageView, String url) {
    Glide.with(imageView.getContext())
            .load(url)
            .crossFade(500)
            .error(getDefaultPic(0))
            .into(imageView);
}
项目：liveomvp    文件：BaseModel.java    
@BindingAdapter("imageLoadRounded")
public static void setImageLoadRounded(final ImageView imageView, String urlImage){
    if (!TextUtils.isEmpty(urlImage)) {
        Glide.with(imageView.getContext()).load(urlImage).asBitmap().centerCrop().into(new BitmapImageViewTarget(imageView) {
            @Override
            protected void setResource(Bitmap resource) {
                RoundedBitmapDrawable circularBitmapDrawable =
                        RoundedBitmapDrawableFactory.create(imageView.getContext().getResources(), resource);
                circularBitmapDrawable.setCircular(true);
                imageView.setImageDrawable(circularBitmapDrawable);
            }
        });
    }
}
项目：GitHub    文件：BindingUtils.java    
@BindingAdapter({"imageUrl"})
public static void loadImg(ImageView v, String url) {
    v.setColorFilter(v.getContext().getResources().getColor(SpUtil.isNight() ? R.color.CoverColor : R.color.colorWhite), PorterDuff.Mode.MULTIPLY);
    Glide.with(v.getContext())
            .load(getFuckUrl(url))
            .diskCacheStrategy(DiskCacheStrategy.ALL)
            .into(v);
}
项目：ForgetAdapters    文件：BindingAdapters.java    
@BindingAdapter(value = {"items", "viewProvider"}, requireAll = true)
public static <TModel, TView extends View & IDataViewModelProvider<TModel>> void setItems(RecyclerView recyclerView, ObservableArrayList<TModel> items, RecyclerViewProvider<TModel, TView> viewProvider) {

    if (recyclerView.getAdapter() != null &&
            recyclerView.getAdapter() instanceof RecyclerViewListAdapter &&
            ((RecyclerViewListAdapter)recyclerView.getAdapter()).getList() == items)
        return;

    RecyclerViewListAdapter<TModel, TView> adapter = new RecyclerViewListAdapter<>(items, viewProvider);
    recyclerView.setAdapter(adapter);
}
项目：GitHub    文件：BindingUtils.java    
@BindingAdapter({"article"})
public static void setArticle(TextView tv, String url) {
    if (TextUtils.isEmpty(url)) return;
    String article = url.replace("<br>", "\n").replaceAll(" ", "").replaceAll("//", "");
    if (!TextUtils.isEmpty(article) && article.indexOf("&gt;") > 0) {
        article = article.substring(article.indexOf("&gt;") + 4, article.length());
    }
    tv.setText(article);
}
项目：GitHub    文件：BindingUtils.java    
@BindingAdapter({"imageUrl"})
public static void loadImg(ImageView v, String url) {
    v.setColorFilter(v.getContext().getResources().getColor(SpUtil.isNight() ? R.color.CoverColor : R.color.colorWhite), PorterDuff.Mode.MULTIPLY);
    Glide.with(v.getContext())
            .load(getFuckUrl(url))
            .diskCacheStrategy(DiskCacheStrategy.ALL)
            .into(v);
}
项目：BaseCore    文件：ImageViewBindingAdapter.java    
@BindingAdapter(value = {"imageUrl", "placeHolder", "error"}, requireAll = false)
/**
 * 不支持mipmap下的图片
 */
public static void loadImage(ImageView imageView, String url, Drawable holderDrawable, Drawable errorDrawable) {

    Glide.with(imageView.getContext())
            .load(url)
            .apply(GlideRequestOption.getRequestOptions().placeholder(holderDrawable)
                    .error(errorDrawable))
            .into(imageView);
}
项目：ui-atoms-android    文件：AtomListView.java    
@BindingAdapter("selectedItems")
public static <T> void setSelectedItems(
        AtomListView view,
        @Nullable ObservableList<T> list){
    if(view.getSelectedItems() == list)
        return;
    view.setSelectedItems(list);
}
项目：GitHub    文件：BindingUtils.java    
@BindingAdapter({"article"})
public static void setArticle(TextView tv, String url) {
    if (TextUtils.isEmpty(url)) return;
    String article = url.replace("<br>", "\n").replaceAll(" ", "").replaceAll("//", "");
    if (!TextUtils.isEmpty(article) && article.indexOf("&gt;") > 0) {
        article = article.substring(article.indexOf("&gt;") + 4, article.length());
    }
    tv.setText(article);
}
项目：Mvvm    文件：BindingAdapters.java    
@SuppressWarnings("unchecked")
@BindingAdapter(value = {"bindingItem", "items", "adapter", "itemIds", "viewHolder"}, requireAll = false)
public static <T> void setAdapter(RecyclerView recyclerView,
                                  BindingItem<T> bindingItem,
                                  List<T> items,
                                  MvvmAdapter<T> adapter,
                                  MvvmAdapter.ItemIds<? super T> itemIds,
                                  MvvmAdapter.ViewHolderFactory viewHolderFactory) {
    if (bindingItem == null) {
        throw new IllegalArgumentException("bindingItem must not be null");
    }
    MvvmAdapter oldAdapter = (MvvmAdapter) recyclerView.getAdapter();
    if (adapter == null) {
        if (oldAdapter == null) {
            adapter = new MvvmAdapter<>();
        } else {
            adapter = oldAdapter;
        }
    }
    adapter.setBindingItem(bindingItem);
    adapter.setItems(items);
    adapter.setItemIds(itemIds);
    adapter.setViewHolderFactory(viewHolderFactory);
    if (oldAdapter != adapter) {
        recyclerView.setAdapter(adapter);
    }
}
项目：PhotoExample    文件：ListBindingAdapter.java    
@BindingAdapter(value = "resource")
public static void setResource(RecyclerView recyclerView, Resource resource){
    RecyclerView.Adapter adapter = recyclerView.getAdapter();
    if(adapter == null)
        return;

    if(resource == null || resource.data == null)
        return;

    if(adapter instanceof BaseAdapter){
        ((BaseAdapter)adapter).setData((List) resource.data);
    }
}
项目：data-binding-validator    文件：RegexBindings.java    
@BindingAdapter(value = {"validateRegex", "validateRegexMessage", "validateRegexAutoDismiss"}, requireAll = false)
public static void bindingRegex(TextView view, String pattern, String errorMessage, boolean autoDismiss) {
    if (autoDismiss) {
        EditTextHandler.disableErrorOnChanged(view);
    }

    String handledErrorMessage = ErrorMessageHelper.getStringOrDefault(view,
            errorMessage, R.string.error_message_regex_validation);
    ViewTagHelper.appendValue(R.id.validator_rule, view, new RegexRule(view, pattern, handledErrorMessage));
}
项目：data-binding-validator    文件：PasswordBindings.java    
@BindingAdapter(value = {"validatePassword", "validatePasswordMessage", "validatePasswordAutoDismiss"}, requireAll = false)
public static void bindingPassword(TextView view, TextView comparableView, String errorMessage, boolean autoDismiss) {
    if (autoDismiss) {
        EditTextHandler.disableErrorOnChanged(view);
    }

    String handledErrorMessage = ErrorMessageHelper.getStringOrDefault(view,
            errorMessage, R.string.error_message_not_equal_password);
    ViewTagHelper.appendValue(R.id.validator_rule, view,
            new ConfirmPasswordRule(view, comparableView, handledErrorMessage));
}
项目：DataBindingDemos    文件：DatabindingUtils.java    
@BindingAdapter({"app:imageUrl", "app:placeholder"})
public static void loadImage(final ImageView view, final String url, final Drawable placeholder) {

    Picasso.with(view.getContext())
            .load(url)
            .placeholder(placeholder)
            .into(view);

}
项目：Mvvm    文件：BindingAdapters.java    
@BindingAdapter("android:src")
public static void setSrc(ImageView view, Bitmap bitmap) {
    view.setImageBitmap(bitmap);
}
项目：OpenYOLO-Android    文件：DataBindingAdapters.java    
/**
 * Facilitates loading images into an ImageView using Glide, by binding a string URI.
 */
@BindingAdapter("android:src")
public static void setImageUri(ImageView view, String imageUri) {
    GlideApp.with(view)
            .load(imageUri)
            .fitCenter()
            .into(view);
}
项目：MVVM-JueJin    文件：FragmentAdapter.java    
@BindingAdapter(value = {"fragments", "curIndex"}, requireAll = false)
public static void bind(ViewPager container, final List<? extends Fragment> fragments, int curIndex) {
    if(!(container.getContext() instanceof FragmentActivity))
        throw new IllegalArgumentException(TAG + "context must instanceof FragmentActivity");
    FragmentManager fm = ((FragmentActivity) container.getContext()).getSupportFragmentManager();

    if (fragments != null && !fragments.isEmpty()) {
        PagerAdapter adapter = container.getAdapter();
        if(adapter == null) {
            // initialize, fragments are only added once !!!
            container.setAdapter(adapter = new FragmentPagerAdapter(fm) {
                @Override
                public Fragment getItem(int position) {
                    return fragments.get(position);
                }

                @Override
                public int getCount() {
                    return fragments.size();
                }
            });
        }

        adapter.notifyDataSetChanged();

        if(curIndex >= 0 && curIndex < fragments.size())
            container.setCurrentItem(curIndex);
    }
}
项目：MVVM-JueJin    文件：RecyclerViewAdapter.java    
/**
 * (伪)双向 databinding: 自动调用 {@link TwoWayListVM#getLoadTask()},
 *      并自动触发 {@link TwoWayListVM#setData(ObservableArrayList)}
 *      然后自动更新 RecyclerView
 *
 * @param container
 * @param vm
 * @param datas
 * @param <T>
 */
@BindingAdapter({"vm", "data"})
public static <T> void setDataTwoWay(final RecyclerView container, final ListVM<T> vm, List<T> datas){
    if(vm == null){
        return ;
    }
    setData(container, vm, datas);

    if(vm instanceof TwoWayListVM) {
        boolean isInited = container.getTag(R.id.db_inited) != null;
        if (!isInited) {
            container.setTag(R.id.db_inited, true);

            final TwoWayListVM<T> _vm = ((TwoWayListVM<T>) vm);

            loadData(container, _vm, null, null);
            // 若 parent 可下拉刷新，设置回调
            ViewParent parent = container.getParent();
            if (parent != null && parent instanceof TwoWayListVM.Refreshable) {
                final TwoWayListVM.Refreshable refreshable = (TwoWayListVM.Refreshable) parent;
                ((TwoWayListVM.Refreshable) parent).setOnRefresh(new TwoWayListVM.Refreshable.CallBack() {
                    @Override
                    public void onRefresh() {
                        loadData(container, _vm, null, refreshable);
                    }

                    @Override
                    public void onLoadMore() {
                        List<T> data = _vm.getData();
                        if (data.size() - 1 >= 0) {
                            loadData(container, _vm, data.get(data.size() - 1), refreshable);
                        }
                    }
                });
            }
        }
    }
}
项目：data-binding-validator    文件：TypeBindings.java    
@BindingAdapter(value = {"validateType", "validateTypeMessage", "validateTypeAutoDismiss"}, requireAll = false)
public static void bindingTypeValidation(TextView view, String fieldTypeText, String errorMessage, boolean autoDismiss) {
    if (autoDismiss) {
        EditTextHandler.disableErrorOnChanged(view);
    }
    TypeRule.FieldType fieldType = getFieldTypeByText(fieldTypeText);
    try {
        String handledErrorMessage = ErrorMessageHelper.getStringOrDefault(view,
                errorMessage, fieldType.errorMessageId);
        ViewTagHelper.appendValue(R.id.validator_rule, view, fieldType.instantiate(view, handledErrorMessage));
    } catch (Exception ignored) {}
}
项目：Discover    文件：DatabindingUtil.java    
@BindingAdapter("imageUrl")
public static void setImage(ImageView view, String url) {
    Glide.with(view.getContext()).load(url)
            .crossFade(800)
            .placeholder(R.drawable.cross_image)
            .error(R.drawable.cross_image)
            .into(view);
}
项目：PhotoExample    文件：ImageBindingAdapter.java    
@BindingAdapter(value = "url")
public static void loadImageUrl(ImageView view, String url) {
    if (url != null && !url.equals(""))
        Picasso.with(view.getContext())
                .load(url)
                .into(view);
}
项目：okuki    文件：RecyclerViewBindings.java    
@BindingAdapter(value = {"itemBinding", "items", "adapter", "itemIds", "viewHolder", "onItemBound"}, requireAll = false)
public static <T> void setAdapter(RecyclerView recyclerView, OnItemBind<T> onItemBind, List<T> items,
                                  BindingRecyclerViewAdapter<T> adapter, BindingRecyclerViewAdapter.ItemIds<? super T> itemIds,
                                  BindingRecyclerViewAdapter.ViewHolderFactory viewHolderFactory, OnItemBoundHandler<T> onItemBoundHandler) {
    ItemBinding<T> itemBinding = ((onItemBind != null) && (onItemBoundHandler != null))
            ? ItemBinding.of(new OnItemBindWrapper<>(onItemBind, onItemBoundHandler))
            : ItemBinding.of(onItemBind);
    BindingRecyclerViewAdapters.setAdapter(recyclerView, itemBinding, items, adapter, itemIds, viewHolderFactory);

}
项目：Fairy    文件：EditBindingAdapter.java    
@BindingAdapter("judgehint")
public static void setHint(EditText view, CharSequence hint) {
    switch (view.getId()) {
        case R.id.edit_options_logcat:
            String options = "[options]";
            if (!hint.equals("")) {
                options = hint.toString();
            }
            view.setHint(options);
            break;
        case R.id.edit_filter_logcat:
            String filter = "[filterspecs]";
            if (!hint.equals("")) {
                filter = hint.toString();
            }
            view.setHint(filter);
            break;
        case R.id.edit_grep_logcat:
            String grep = "[grep]";
            if (!hint.equals("")) {
                grep = hint.toString();
            }
            view.setHint(grep);
            break;
        default:
            ZLog.e("no match");
            break;
    }
}
项目：data-binding-validator    文件：DateBindings.java    
@BindingAdapter(value = {"validateDate", "validateDateMessage", "validateDateAutoDismiss"}, requireAll = false)
public static void bindingDate(TextView view, String pattern, String errorMessage, boolean autoDismiss) {
    if (autoDismiss) {
        EditTextHandler.disableErrorOnChanged(view);
    }

    String handledErrorMessage = ErrorMessageHelper.getStringOrDefault(view,
            errorMessage, R.string.error_message_date_validation);
    ViewTagHelper.appendValue(R.id.validator_rule, view, new DateRule(view, pattern, handledErrorMessage));
}
项目：ActivityBuilder    文件：BookListActivity.java    
@BindingAdapter("content")
public static <T> void setContent(RecyclerView recyclerView, List<T> content) {
  RecyclerView.Adapter adapter = recyclerView.getAdapter();
  if (adapter == null) {
    return;
  }
  if (adapter instanceof BookListAdapter) {
    ((BookListAdapter) adapter).replace((List<Book>) content);
  }
}