常规项目中我们用到Adapter的场景比比皆是,针对于如此频繁的需求,我们一般都会封装一个Base出来,那么BaseQuickAdapter就是一个比较成熟的BaseAdapter !
在当前实际开发的项目中已经很少用到ListView这款老控件了,大多用的RecyclerView,一般的话我们都自己有一些简单的封装,但是相对而言不是很完善,扩展性并不是很强,所有找到了
BaseRecyclerViewAdapterHelper
框架,它是一款扩展性较强的BaseAdapter,同时在Github的Start较多,也使用便捷,所以在此情况下,我们来学习一下它的使用方法 ~
build.gradle (项目级)
allprojects {
repositories {
jcenter()
maven { url "https://jitpack.io" }
}
}
build.gradle (app级):
implementation 'com.github.CymChad:BaseRecyclerViewAdapterHelper:2.9.30'
implementation 'com.android.support:recyclerview-v7:27.1.1'
TextBean
Demo列表为常规展示,为了说明使用方式,这里我们建立一个简单的Model
package com.bakheet.effect.adaptertext;
/**
* Created by YongLiu on 2017/11/10.
*/
public class TextBean {
public String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
TextAdapter
创建Adapter继承BaseQuickAdapter,只实现俩个方法即可,但是需要你绑定对应的model ~
package com.bakheet.effect.adaptertext;
import android.support.annotation.LayoutRes;
import android.support.annotation.Nullable;
import com.chad.library.adapter.base.BaseQuickAdapter;
import com.chad.library.adapter.base.BaseViewHolder;
import java.util.List;
/**
* Created by YongLiu on 2017/11/10.
* 可在对应的Adapter头部声明实体类的泛型,BaseViewHolder为通用型
*/
public class TextAdapter extends BaseQuickAdapter<TextBean, BaseViewHolder> {
public TextAdapter(@LayoutRes int layoutResId, @Nullable List data) {
super(layoutResId, data);
}
@Override
protected void convert(BaseViewHolder helper, TextBean item) {
helper.setText(R.id.tv_item,item.getName());
/*这里设置子条目点击事件需要注意一下!
如果 添加了固定的某控件id点击事件(如下文的 .addOnLongClickListener(R.id.tv_btn)),
同时你又把子条目的id控件设置成了match的属性!那么OnItemOnClick你会发现调用不到!!!
这时候你需要用到的子条目监听就是setOnItemChildClickListener,然后去绑定对应的id!
如果只是需要子条目的点击事件,,不需要add任何Listener!!!
**/
helper.addOnClickListener(R.id.tv_btn).addOnLongClickListener(R.id.tv_btn);
}
}
MainActivity
使用常规的RecyclerView控件即可,因为我们主要作用于Adapter方面
package com.bakheet.effect.adaptertext;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.Toast;
import com.chad.library.adapter.base.BaseQuickAdapter;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
private RecyclerView mRv;
private TextAdapter adapter;
private ArrayList<TextBean> lists;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lists = new ArrayList<TextBean>();
initData();
mRv = (RecyclerView) findViewById(R.id.rv);
mRv.setLayoutManager(new LinearLayoutManager(this));
adapter = new TextAdapter(R.layout.item_layout, lists);
mRv.setAdapter(adapter);
adapter.openLoadAnimation();
// 默认提供5种方法(渐显、缩放、从下到上,从左到右、从右到左)
// adapter.openLoadAnimation(BaseQuickAdapter.FOOTER_VIEW);
adapter.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {
@Override
public void onItemClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(MainActivity.this, "触发子条目提示" + position, Toast.LENGTH_SHORT).show();
}
});
adapter.setOnItemLongClickListener(new BaseQuickAdapter.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(MainActivity.this, "子条目长按提示" + position, Toast.LENGTH_SHORT).show();
return true;
}
});
adapter.setOnItemChildClickListener(new BaseQuickAdapter.OnItemChildClickListener() {
@Override
public void onItemChildClick(BaseQuickAdapter adapter, View view, int position) {
switch (view.getId()) {
case R.id.tv_btn:
Toast.makeText(MainActivity.this, "内部 - 子条目点击提示" + position, Toast.LENGTH_SHORT).show();
break;
default:
break;
}
}
});
adapter.setOnItemChildLongClickListener(new BaseQuickAdapter.OnItemChildLongClickListener() {
@Override
public boolean onItemChildLongClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(MainActivity.this, "内部 - 子条目长按提示" + position, Toast.LENGTH_SHORT).show();
return true;
}
});
}
//数据模拟
private void initData() {
for (int i = 0; i < 55; i++) {
TextBean textBean = new TextBean();
textBean.setName("吃土一个月" + i);
lists.add(textBean);
}
}
}
activity_main
<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"
tools:context="com.bakheet.effect.adaptertext.MainActivity">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/rv"
/>
LinearLayout>
动画引入
// 默认提供5种方法(渐显、缩放、从下到上,从左到右、从右到左)
// adapter.openLoadAnimation(BaseQuickAdapter.FOOTER_VIEW);
事件监听
如只使用普通的Item点击和长按操作,可直接调用
//点击监听
adapter.setOnItemClickListener(new BaseQuickAdapter.OnItemClickListener() {
@Override
public void onItemClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(MainActivity.this, "触发子条目提示" + position, Toast.LENGTH_SHORT).show();
}
});
//长按监听
adapter.setOnItemLongClickListener(new BaseQuickAdapter.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(MainActivity.this, "子条目长按提示" + position, Toast.LENGTH_SHORT).show();
return true;
}
});
同时设置Item内部子视图的点击和长按监听
如下面第一种,可处理内部多个事件,需要绑定对应的Id,但是需要在Adapter内设置设个事件
adapter设置方式
//一个点击一个长按
helper.addOnClickListener(R.id.tv_btn).addOnLongClickListener(R.id.tv_btn);
使用方式
adapter.setOnItemChildClickListener(new BaseQuickAdapter.OnItemChildClickListener() {
@Override
public void onItemChildClick(BaseQuickAdapter adapter, View view, int position) {
switch (view.getId()) {
case R.id.tv_btn:
Toast.makeText(MainActivity.this, "内部 - 子条目点击提示" + position, Toast.LENGTH_SHORT).show();
break;
default:
break;
}
}
});
adapter.setOnItemChildLongClickListener(new BaseQuickAdapter.OnItemChildLongClickListener() {
@Override
public boolean onItemChildLongClick(BaseQuickAdapter adapter, View view, int position) {
Toast.makeText(MainActivity.this, "内部 - 子条目长按提示" + position, Toast.LENGTH_SHORT).show();
return true;
}
});
扩展资源