android.databinding.InverseBindingListener的实例源码（android databinding原理）

25-01-23 26

针对android.databinding.InverseBindingListener的实例源码和androiddatabinding原理这两个问题，本篇文章进行了详细的解答，同时本文还将给你拓展A

针对android.databinding.InverseBindingListener的实例源码和android databinding原理这两个问题，本篇文章进行了详细的解答，同时本文还将给你拓展AbstractMethodError: abstract method "androidx.databinding.ViewDataBinding androidx.databind...、Android Data Binding 系列 (二) -- Binding 与 Observer 实现原理、Android 官方 DataBinding（三）：RecyclerView 使用 ViewDataBinding 更新数据、Android 官方 DataBinding（四）：BindingAdapter等相关知识，希望可以帮助到你。

本文目录一览：

android.databinding.InverseBindingListener的实例源码（android databinding原理）
AbstractMethodError: abstract method "androidx.databinding.ViewDataBinding androidx.databind...
Android Data Binding 系列 (二) -- Binding 与 Observer 实现原理
Android 官方 DataBinding（三）：RecyclerView 使用 ViewDataBinding 更新数据
Android 官方 DataBinding（四）：BindingAdapter

android.databinding.InverseBindingListener的实例源码（android databinding原理）

项目：android-mvvmFramework 文件：BindingConfig.java

@BindingAdapter(value = {"onRefreshListener","refreshingAttrChanged"},requireAll = false)
public static void setonRefreshListener(final SwipeRefreshLayout view,final SwipeRefreshLayout.OnRefreshListener listener,final InverseBindingListener refreshingAttrChanged) {

    SwipeRefreshLayout.OnRefreshListener newValue = new SwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {
            if (listener != null) {
                if (refreshingAttrChanged != null) {
                    refreshingAttrChanged.onChange();
                }
                listener.onRefresh();
            }
        }
    };

    SwipeRefreshLayout.OnRefreshListener oldValue = ListenerUtil.trackListener(view,newValue,R.id.onRefreshListener);
    if (oldValue != null) {
        view.setonRefreshListener(null);
    }
    view.setonRefreshListener(newValue);
}

项目：spline 文件：HuePickerBindingAdapters.java

/**
 * This is how you implement 2-way data binding of a custom attribute if you want to maintain
 * a custom listener interface - OnHuechangelistener,in this case - while also Leveraging
 * the synthetic attributes hueAttrChanged (the InverseBindingListener). For an example of
 * how to implement custom 2-way binding with just the synthetic AttrChanged attribute's
 * InverseBindingListener,see DocumentView or LayerListView's currentLayer 2-way binding
 * (along with the InverseBindingMethod declarations in DocumentviewmodelBindingAdapters).
 *
 * @param view                   The view we're 2-way binding to.
 * @param onHuechangelistener    The OnHuechangelistener bound by the developer on the view
 *                               in question.
 * @param inverseBindingListener Synthetic attribute representing an InverseBindingListener
 *                               for changes to the hue attribute.
 */
@BindingAdapter(value = {"onHueChange","hueAttrChanged"},requireAll = false)
public static void setListeners(HuePicker view,final HuePicker.OnHuechangelistener onHuechangelistener,final InverseBindingListener inverseBindingListener) {
    HuePicker.OnHuechangelistener newListener;
    if (inverseBindingListener == null) {
        // If the synthetic listener param is null,just keep track of the listener set in
        // the binding
        newListener = onHuechangelistener;
    } else {
        // Otherwise define a new listener to wraps both listeners and invoke them at the
        // right time within the new listener if they are non-null
        newListener = new HuePicker.OnHuechangelistener() {
            @Override
            public void onHueChange(HuePicker huePicker,float hue) {
                if (onHuechangelistener != null) {
                    onHuechangelistener.onHueChange(huePicker,hue);
                }
                inverseBindingListener.onChange();
            }
        };
    }

    // Use track listener to record listener we're adding and return any old listeners
    // registered through this method so that on rebind we don't add duplicate listeners
    HuePicker.OnHuechangelistener oldListener = ListenerUtil.trackListener(view,newListener,R.id.huechangelistener);

    // Remove the old listener we set using this BindingAdapter,if there is one
    if (oldListener != null) {
        view.removeHuechangelistener(oldListener);
    }

    // Add our new listener
    if (newListener != null) {
        view.addHuechangelistener(newListener);
    }
}

项目：spline 文件：LayerListView.java

public void setCurrentLayerAttrChanged(InverseBindingListener listener) {
    mAdapter.setCurrentLayerAttrChanged(listener);
}