DataBinding在RecycleView中结合BaseRecyclerViewAdapterHelper的使用
- 引入BaseRecyclerViewAdapterHelper
在app的build.gradle中
implementation 'com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.30'
在Project的build.gradle中
allprojects {
repositories {
maven { url "https://jitpack.io" }
jcenter()
}
}
- 创建BaseActivity
package tsou.cn.databinding;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.LinkedList;
import java.util.List;
public abstract class BaseActivity extends AppCompatActivity {
private static List<BaseActivity> activities = new LinkedList<BaseActivity>();
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
synchronized (activities) {
activities.add(this);
}
}
protected void finishAllActivity() {
List<BaseActivity> tempList;
synchronized (activities) {
tempList = new LinkedList<BaseActivity>(activities);
}
for (BaseActivity a : tempList) {
a.finish();
}
}
@Override
protected void onDestroy() {
activities.remove(this);
try {
System.gc();
} catch (Exception e) {
}
super.onDestroy();
}
}
- 创建BaseRecyclerViewActivity处理布局绑定
package tsou.cn.databinding;
import android.databinding.DataBindingUtil;
import android.databinding.ViewDataBinding;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
public abstract class BaseRecyclerViewActivity<M extends ViewDataBinding> extends BaseActivity {
protected View notDataView;
protected View errorView;
protected M binding;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = DataBindingUtil.setContentView(this, getLayoutId());
setEmptyAndErrorView(getRecyclerView(), R.mipmap.icon_empty, getString(R.string.the_server_did_not_return_data));
initData(savedInstanceState);
initListener();
}
public abstract int getLayoutId();
public abstract RecyclerView getRecyclerView();
protected abstract void initData(Bundle savedInstanceState);
protected void initListener() {
}
protected void setEmptyAndErrorView(RecyclerView mRecyclerView, int emptyIcon, String emptyText) {
notDataView = getLayoutInflater().inflate(R.layout.empty_view, (ViewGroup) mRecyclerView.getParent(), false);
ImageView empty_icon = (ImageView) notDataView.findViewById(R.id.iv_empty_icon);
TextView empty_text = (TextView) notDataView.findViewById(R.id.tv_empty_no_data);
empty_icon.setImageResource(emptyIcon);
empty_text.setText(emptyText);
notDataView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onRefresh();
}
});
errorView = getLayoutInflater().inflate(R.layout.error_view, (ViewGroup) mRecyclerView.getParent(), false);
errorView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onRefresh();
}
});
}
protected void onRefresh() {
}
}
- 数据LoadMore
package tsou.cn.databinding.bean;
/**
* Created by Administrator on 2018/5/31 0031.
*/
public class LoadMore {
private String name;
private String imaggUrl;
public LoadMore(String name, String imaggUrl) {
this.name = name;
this.imaggUrl = imaggUrl;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getImaggUrl() {
return imaggUrl;
}
public void setImaggUrl(String imaggUrl) {
this.imaggUrl = imaggUrl;
}
}
- item布局item_load_more
<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:bind="http://schemas.android.com/apk/res-auto">
<data>
<variable
name="loadMore"
type="tsou.cn.databinding.bean.LoadMore" />
</data>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="200dp"
android:layout_marginBottom="5dp"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_margin="10dp"
android:textSize="16sp"
android:textColor="@android:color/black"
android:text="@{loadMore.name,default=标题}" />
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
bind:url="@{loadMore.imaggUrl}"
android:src="@mipmap/ic_launcher_round" />
</LinearLayout>
</layout>
- LoadMoreAdapter
package tsou.cn.databinding.adapter;
import android.databinding.DataBindingUtil;
import android.support.annotation.Nullable;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import android.widget.ImageView;
import com.bumptech.glide.Glide;
import com.chad.library.adapter.base.BaseQuickAdapter;
import java.util.List;
import tsou.cn.databinding.R;
import tsou.cn.databinding.bean.LoadMore;
import tsou.cn.databinding.databinding.ItemLoadMoreBinding;
import tsou.cn.databinding.viewholder.MyBaseViewHolder;
/**
* Created by Administrator on 2018/5/31 0031.
*/
public class LoadMoreAdapter extends BaseQuickAdapter<LoadMore, MyBaseViewHolder> {
public LoadMoreAdapter(@Nullable List<LoadMore> data) {
super(data);
}
@Override
protected MyBaseViewHolder onCreateDefViewHolder(ViewGroup parent, int viewType) {
ItemLoadMoreBinding binding = DataBindingUtil.inflate(LayoutInflater.from(mContext),
R.layout.item_load_more, parent, false);
return new MyBaseViewHolder(binding.getRoot());
}
@Override
protected void convert(MyBaseViewHolder holder, LoadMore item) {
ItemLoadMoreBinding binding = DataBindingUtil.getBinding(holder.itemView);
binding.setLoadMore(item);
binding.executePendingBindings();
}
}
- MyBaseViewHolder
package tsou.cn.databinding.viewholder;
import android.view.View;
import com.chad.library.adapter.base.BaseViewHolder;
public class MyBaseViewHolder extends BaseViewHolder {
public MyBaseViewHolder(View view) {
super(view);
}
}
- Activity调用
package tsou.cn.databinding;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import com.chad.library.adapter.base.BaseQuickAdapter;
import java.lang.ref.WeakReference;
import java.util.ArrayList;
import tsou.cn.databinding.adapter.LoadMoreAdapter;
import tsou.cn.databinding.bean.LoadMore;
import tsou.cn.databinding.databinding.ActivityLoadMoreRecyclerViewBinding;
import tsou.cn.databinding.view.CustomLoadMoreView;
public class LoadMoreRecyclerViewActivity extends BaseRecyclerViewActivity<ActivityLoadMoreRecyclerViewBinding>
implements SwipeRefreshLayout.OnRefreshListener,
BaseQuickAdapter.RequestLoadMoreListener, BaseQuickAdapter.OnItemClickListener {
private LoadMoreAdapter adapter;
private ArrayList<LoadMore> loadMores = new ArrayList<>();
private int mLastIndex;
private MyHandler myHandler;
@Override
public int getLayoutId() {
return R.layout.activity_load_more_recycler_view;
}
@Override
public RecyclerView getRecyclerView() {
return binding.recyclerView;
}
protected void initData(Bundle savedInstanceState) {
binding.recyclerView.setLayoutManager(new LinearLayoutManager(this));
binding.swipeRefresh.setColorSchemeColors(Color.rgb(63, 81,
181));
adapter = new LoadMoreAdapter(loadMores);
adapter.isFirstOnly(false);
//慢慢淡进
//adapter.openLoadAnimation(BaseQuickAdapter.ALPHAIN);
//慢慢放大进入
//adapter.openLoadAnimation(BaseQuickAdapter.SCALEIN);
//从下滑入
adapter.openLoadAnimation(BaseQuickAdapter.SLIDEIN_BOTTOM);
//从左滑入
//adapter.openLoadAnimation(BaseQuickAdapter.SLIDEIN_LEFT);
//从有滑入
//adapter.openLoadAnimation(BaseQuickAdapter.SLIDEIN_RIGHT);
adapter.setLoadMoreView(new CustomLoadMoreView());
binding.recyclerView.setAdapter(adapter);
adapter.setEnableLoadMore(false);
adapter.setEmptyView(R.layout.loading_view, (ViewGroup) binding.recyclerView.getParent());
binding.swipeRefresh.setEnabled(false);
myHandler = new MyHandler(this);
fetchData(true);
}
@Override
protected void initListener() {
super.initListener();
binding.swipeRefresh.setOnRefreshListener(this);
adapter.setOnLoadMoreListener(this, binding.recyclerView);
adapter.setOnItemClickListener(this);
}
@Override
public void onRefresh() {
if (adapter.getData().isEmpty())
adapter.setEmptyView(R.layout.loading_view, (ViewGroup) binding.recyclerView.getParent());
adapter.setEnableLoadMore(false);
fetchData(true);
}
@Override
public void onLoadMoreRequested() {
if (binding.swipeRefresh != null) {
binding.swipeRefresh.setEnabled(false);
mLastIndex++;
fetchData(false);
}
}
@Override
public void onItemClick(BaseQuickAdapter adapter, View view, int position) {
}
private void fetchData(boolean isRefresh) {
if (isRefresh) {
mLastIndex = 1;
}
myHandler.sendEmptyMessageDelayed(0, 3000);
}
private static class MyHandler extends Handler {
private WeakReference<LoadMoreRecyclerViewActivity> nowActivity;
public MyHandler(LoadMoreRecyclerViewActivity nowActivity) {
this.nowActivity = new WeakReference<LoadMoreRecyclerViewActivity>(nowActivity);
}
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
LoadMoreRecyclerViewActivity activity = nowActivity.get();
if (activity == null || activity.isFinishing()) {
return;
}
switch (msg.what) {
case 0:
ArrayList<LoadMore> loadMores = activity.loadMores;
int mLastIndex = activity.mLastIndex;
ActivityLoadMoreRecyclerViewBinding binding = activity.binding;
LoadMoreAdapter adapter = activity.adapter;
ArrayList<LoadMore> loadMoresCurrent = new ArrayList<>();
if (mLastIndex == 1) {
loadMores.clear();
for (int i = 0; i < 10; i++) {
loadMoresCurrent.add(new LoadMore("晓果" + i, "https://unsplash.it/200/200?random&" + i));
}
loadMores.addAll(loadMoresCurrent);
} else {
for (int i = 11; i < 20; i++) {
loadMoresCurrent.add(new LoadMore("晓果" + i, "https://unsplash.it/200/200?random&" + i));
}
}
if (mLastIndex == 1) {
adapter.setNewData(loadMores);
binding.swipeRefresh.setEnabled(true);
binding.swipeRefresh.setRefreshing(false);
adapter.setEnableLoadMore(true);
} else {
if (loadMoresCurrent.size() == 0) {
adapter.loadMoreEnd();
} else {
adapter.addData(loadMoresCurrent);
adapter.loadMoreComplete();
}
binding.swipeRefresh.setEnabled(true);
}
break;
}
}
}
}
- BindingAdapter处理图片显示
package tsou.cn.databinding.utils;
import android.databinding.BindingAdapter;
import android.databinding.BindingConversion;
import android.widget.ImageView;
import android.widget.TextView;
import com.bumptech.glide.Glide;
/**
* Created by Administrator on 2018/5/30 0030.
*/
public class ImageUtil {
@BindingAdapter({"url"})
public static void loadImage(ImageView view, String url) {
Glide.with(UIUtils.getContext()).load(url).into(view);
}
@BindingAdapter("android:text")
public static void setText(TextView view, String text) {
view.setText(text + "-追加的数据");
}
@BindingConversion
public static String conversionString(String text) {
return text + "-conversionString";
}
}
- 加载更多样式CustomLoadMoreView
package tsou.cn.databinding.view;
import com.chad.library.adapter.base.loadmore.LoadMoreView;
import tsou.cn.databinding.R;
/**
* Created by BlingBling on 2016/10/15.
*/
public final class CustomLoadMoreView extends LoadMoreView {
@Override
public int getLayoutId() {
return R.layout.view_load_more;
}
@Override
protected int getLoadingViewId() {
return R.id.load_more_loading_view;
}
@Override
protected int getLoadFailViewId() {
return R.id.load_more_load_fail_view;
}
@Override
protected int getLoadEndViewId() {
return R.id.load_more_load_end_view;
}
}
- 效果
Demo地址:https://download.csdn.net/download/huangxiaoguo1/10454497