[Android] Android RecycleView和ListView 自定义Adapter封装类
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在网上查看了很多对应 Android RecycleView和ListView 自定义Adapter封装类 的文章，主要存在几个问题：
一)、网上代码一大抄，复制来复制去，大部分都运行不起来，或者 格式错乱
二)、剩下的那些能运行起来的，将Adapter类、ViewHolder类，放在不同文件里，导致文件多、杂
于是总结这两个单独的Custom***ViewAdapter 类，以方便调用！
一、RecycleView Adapter自定义封装类
CustomRecyclerViewAdapter.java
package
com.jack.androidbase.adapter;
import
android.content.Context;
import
android.support.v7.widget.RecyclerView;
import
android.util.SparseArray;
import
android.view.LayoutInflater;
import
android.view.View;
import
android.view.ViewGroup;
import
android.widget.ImageView;
import
android.widget.TextView;
import
java.util.List;
public
abstract
class CustomRecyclerViewAdapter<T> extends RecyclerView.Adapter<CustomRecyclerViewAdapter.ViewHolder> {
privateint mLayoutRes;
private List<T> mData;
//定义接口 OnItemClickListenerpublicinterface OnItemClickListener {
void onItemClick(View view, int position);
void onItemLongClick(View view, int position);
}
private OnItemClickListener mOnItemClickListener;
publicvoid setOnItemClickListener(OnItemClickListener onItemClickListener) {
mOnItemClickListener = onItemClickListener;
}
public CustomRecyclerViewAdapter(List<T> mData, int mLayoutRes) {
this.mLayoutRes = mLayoutRes;
this.mData = mData;
}
/**
* inflate操作
*/
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
ViewHolder viewHolder = ViewHolder.get(parent.getContext(), parent, mLayoutRes);
return viewHolder;
}
/**
* 暴露出来的接口
*
* @param holder
* @param obj
*/publicabstractvoid bindView(ViewHolder holder, T obj);
@Override
publicvoid onBindViewHolder(final ViewHolder holder, int position) {
bindView(holder, mData.get(position));
//绑定事件if (mOnItemClickListener != null) {
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
publicvoid onClick(View v) {
int pos = holder.getLayoutPosition();
mOnItemClickListener.onItemClick(holder.itemView, pos);
}
});
holder.itemView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
publicboolean onLongClick(View v) {
int pos = holder.getLayoutPosition();
mOnItemClickListener.onItemLongClick(holder.itemView, pos);
returnfalse;
}
});
}
}
/**
* 获取高度
*
* @return*/
@Override
publicint getItemCount() {
if (mData == null) {
return 0;
}
return mData.size();
}
/**
* ViewHolder
*/publicstaticclass ViewHolder extends RecyclerView.ViewHolder {
private SparseArray<View> mViews;
private View mConvertView;
public ViewHolder(Context context, View itemView, ViewGroup parent) {
super(itemView);
mConvertView = itemView;
mViews = new SparseArray<View>();
}
publicstatic ViewHolder get(Context context, ViewGroup parent, int layoutid) {
View itemView = LayoutInflater.from(context).inflate(layoutid, parent, false);
ViewHolder holder = new ViewHolder(context, itemView, parent);
return holder;
}
public <T extends View> T getView(int viewid) {
View view = mViews.get(viewid);
if (view == null) {
view = mConvertView.findViewById(viewid);
mViews.put(viewid, view);
}
return (T) view;
}
/**
* 设置TextView文本
*/public ViewHolder setText(int viewId, CharSequence text) {
View view = getView(viewId);
if (view instanceof TextView) {
((TextView) view).setText(text);
}
returnthis;
}
/**
* 设置View的Visibility
*/public ViewHolder setViewVisibility(int viewId, int visibility) {
getView(viewId).setVisibility(visibility);
returnthis;
}
/**
* 设置ImageView的资源
*/public ViewHolder setImageResource(int viewId, int drawableRes) {
View view = getView(viewId);
if (view instanceof ImageView) {
((ImageView) view).setImageResource(drawableRes);
} else {
view.setBackgroundResource(drawableRes);
}
returnthis;
}
}
}
如何使用：
MainActivity.java 调用
@Override
protected
void
onCreate(Bundle savedInstanceState) {
super
.onCreate(savedInstanceState);
setContentView(R.layout.activity_ui_recycler_view2);
bindView();
}
private void bindView() {
mRecyclerView = (RecyclerView) findViewById(R.id.ui_basic_recycler_custom_1);
mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
mData = new ArrayList();
for (int i = 0; i < 10; i++) {
mData.add("" + i);
}
//数据装载
myAdapter = new CustomRecyclerViewAdapter(mData, R.layout.item_recyler_1) {
@Override
public void bindView(ViewHolder holder, Object obj) {
holder.setText(R.id.recycler_txt_1, obj.toString());
}
};
//点击监听
listener1 = new CustomRecyclerViewAdapter.OnItemClickListener(){
@Override
public void onItemClick(View view, int position) {
Toast.makeText(getApplicationContext(), position + " click", Toast.LENGTH_SHORT).show();
}
@Override
public void onItemLongClick(View view, int position) {
Toast.makeText(getApplicationContext(), position + " Long click", Toast.LENGTH_SHORT).show();
}
};
mRecyclerView.setAdapter(myAdapter);
myAdapter.setOnItemClickListener(listener1);
}
activity_ui_recycler_view2.xml 布局文件
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context=".activity.***Activity"> <android.support.v7.widget.RecyclerView android:id="@+id/ui_basic_recycler_custom_1" android:layout_width="match_parent" android:layout_height="wrap_content"></android.support.v7.widget.RecyclerView> </RelativeLayout>
二、ListView Adapter 自定义封装类
CustomListViewAdapter.java
package
com.jack.androidbase.adapter;
import
android.content.Context;
import
android.util.SparseArray;
import
android.view.LayoutInflater;
import
android.view.View;
import
android.view.ViewGroup;
import
android.widget.BaseAdapter;
import
android.widget.ImageView;
import
android.widget.TextView;
import
com.jack.androidbase.R;
import
java.util.ArrayList;
import
java.util.LinkedList;
public
abstract
class CustomListViewAdapter<T> extends BaseAdapter {
private ArrayList<T> mData;
privateint mLayoutRes; //布局idpublic CustomListViewAdapter(ArrayList<T> mData, int mLayoutRes) {
this.mData = mData;
this.mLayoutRes = mLayoutRes;
}
@Override
publicint getCount() {
return mData != null ? mData.size() : 0;
}
@Override
public T getItem(int position) {
return mData.get(position);
}
@Override
publiclong getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = ViewHolder.bind(parent.getContext(), convertView, parent, mLayoutRes
, position);
bindView(holder, getItem(position));
return holder.getItemView();
}
publicabstractvoid bindView(ViewHolder holder, T obj);
//添加一个元素publicvoid add(T data) {
if (mData == null) {
mData = new ArrayList<>();
}
mData.add(data);
notifyDataSetChanged();
}
//往特定位置，添加一个元素publicvoid add(int position, T data) {
if (mData == null) {
mData = new ArrayList<>();
}
mData.add(position, data);
notifyDataSetChanged();
}
publicvoid remove(T data) {
if (mData != null) {
mData.remove(data);
}
notifyDataSetChanged();
}
publicvoid remove(int position) {
if (mData != null) {
mData.remove(position);
}
notifyDataSetChanged();
}
publicvoid clear() {
if (mData != null) {
mData.clear();
}
notifyDataSetChanged();
}
publicstaticclass ViewHolder {
private SparseArray<View> mViews; //存储ListView 的 item中的Viewprivate View item; //存放convertViewprivateint position; //游标private Context context; //Context上下文
//构造方法，完成相关初始化private ViewHolder(Context context, ViewGroup parent, int layoutRes) {
mViews = new SparseArray<>();
this.context = context;
View convertView = LayoutInflater.from(context).inflate(layoutRes, parent, false);
convertView.setTag(this);
item = convertView;
}
//绑定ViewHolder与itempublicstatic ViewHolder bind(Context context, View convertView, ViewGroup parent,
int layoutRes, int position) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder(context, parent, layoutRes);
} else {
holder = (ViewHolder) convertView.getTag();
holder.item = convertView;
}
holder.position = position;
return holder;
}
@SuppressWarnings("unchecked")
public <T extends View> T getView(int id) {
T t = (T) mViews.get(id);
if (t == null) {
t = (T) item.findViewById(id);
mViews.put(id, t);
}
return t;
}
/**
* 获取当前条目
*/public View getItemView() {
return item;
}
/**
* 获取条目位置
*/publicint getItemPosition() {
return position;
}
/**
* 设置文字
*/public ViewHolder setText(int id, CharSequence text) {
View view = getView(id);
if (view instanceof TextView) {
((TextView) view).setText(text);
}
returnthis;
}
/**
* 设置图片
*/public ViewHolder setImageResource(int id, int drawableRes) {
View view = getView(id);
if (view instanceof ImageView) {
((ImageView) view).setImageResource(drawableRes);
} else {
view.setBackgroundResource(drawableRes);
}
returnthis;
}
/**
* 设置点击监听
*/public ViewHolder setOnClickListener(int id, View.OnClickListener listener) {
getView(id).setOnClickListener(listener);
returnthis;
}
/**
* 设置可见
*/public ViewHolder setVisibility(int id, int visible) {
getView(id).setVisibility(visible);
returnthis;
}
/**
* 设置标签
*/public ViewHolder setTag(int id, Object obj) {
getView(id).setTag(obj);
returnthis;
}
//其他方法可自行扩展
}
}
如何使用：
MainActivity.java 调用
@Override
protected
void
onCreate(Bundle savedInstanceState) {
super
.onCreate(savedInstanceState);
setContentView(R.layout.activity_ui_base_list_view_custom);
mContext = UIBaseListViewCustomActivity.this;
initList();
}
private void initList() {
list_book = (ListView) findViewById(R.id.ui_base_list_v2_1);
//数据初始化
mData1 = new ArrayList<>();
mData1.add(new Animal("狗说", "你是狗么?", R.drawable.avatar_1));
mData1.add(new Animal("牛说", "你是牛么?", R.drawable.avatar_2));
mData1.add(new Animal("鸭说", "你是鸭么?", R.drawable.avatar_3));
//Adapter初始化
myAdapter1 = new CustomListViewAdapter<Animal>((ArrayList) mData1, R.layout.item_list_animal) {
@Override
public void bindView(ViewHolder holder, Animal obj) {
holder.setImageResource(R.id.img_icon, obj.getaIcon());
holder.setText(R.id.txt_aName, obj.getaName());
}
};
//ListView设置下Adapter：
list_book.setAdapter(myAdapter1);
list_book.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(mContext, "你点击了~" + position + "~项", Toast.LENGTH_SHORT).show();
}
});}
item_list_animal 布局文件 ：
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context=".activity.UIBaseListViewActivity"> <ImageView android:id="@+id/img_icon" android:layout_width="64dp" android:layout_height="64dp" android:baselineAlignBottom="true" android:paddingLeft="8dp" /> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" android:paddingLeft="20dp" android:paddingTop="10dp"> <TextView android:id="@+id/txt_aName" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="#1D1D1C" android:textSize="20sp" /> <TextView android:id="@+id/txt_aSpeak" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="#B4B4B9" android:textSize="14sp" /> </LinearLayout> </LinearLayout>
三、Github仓库代码：
https://github.com/wukong1688/AndroidBase/tree/master/app/src/main/java/com/jack/androidbase/adapter
如果对您有帮助，欢迎 点赞，欢迎Star，并转发!
本博客地址： wukong1688
本文原文地址： https://www.cnblogs.com/wukong1688/p/10661391.html
转载请著名出处！谢谢~~
原文：https://www.cnblogs.com/wukong1688/p/10661391.html
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