LinearActivity_XML:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="@+id/LinearView"
android:layout_width="match_parent"
android:layout_height="match_parent"></android.support.v7.widget.RecyclerView>
</android.support.constraint.ConstraintLayout>
LinearActivity:
package com.example.rikao_13;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.OrientationHelper;
import android.support.v7.widget.RecyclerView;
import java.util.HashMap;
import com.example.rikao_13.IView.IView;
import com.example.rikao_13.Presenter.IPresenterImp;
import com.example.rikao_13.Until.Bean;
import java.util.List;
import java.util.WeakHashMap;
public class LinearActivity extends AppCompatActivity implements IView {
private RecyclerView mLinearView;
String path="http://www.zhaoapi.cn/product/getCatagory";
private LinearAdapter mAdapter;
private IPresenterImp mIPresenterImp;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_linear);
initView();
initData();
}
private void initData() {
mIPresenterImp.startRequest(path,new HashMap<String,String>(),Bean.class);
//布局管理器!!!!!!!
LinearLayoutManager manager = new LinearLayoutManager(this);
manager.setOrientation(OrientationHelper.VERTICAL);
mLinearView.setLayoutManager(manager);
}
private void initView() {
mLinearView = (RecyclerView) findViewById(R.id.LinearView);
mAdapter=new LinearAdapter(this);
mLinearView.setAdapter(mAdapter);
mIPresenterImp=new IPresenterImp(this);
}
@Override
public void setData(Object o) {
Bean bean=(Bean)o;
final List <Bean.DataBean> data = bean.getData();
mAdapter.setMjihe(data);
mAdapter.setDeleteBack(new LinearAdapter.DeleteBack() {
@Override
//得到点击的下标
public void delete(int position) {
//调用删除方法
mAdapter.deleteData(position);
}
@Override
public void addData(int position) {
//添加点击的条目下标对应的数据
mAdapter.additem(position,data.get(position));
}
});
}
}
Adapter_XML:
<?xml version="1.0" encoding="utf-8"?><LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<ImageView
android:id="@+id/LinearImage"
android:layout_width="100dp"
android:layout_height="100dp"
/>
<TextView
android:id="@+id/LinearText"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
Adapter:
package com.example.rikao_13;
import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.ImageView;
import com.bumptech.glide.Glide;
import com.example.rikao_13.Until.Bean;
import java.util.ArrayList;
import java.util.List;
public class LinearAdapter extends RecyclerView.Adapter<LinearAdapter.ViewHolder> {
private Context mContext;
private List<Bean.DataBean> mjihe;
/**
* 构造方法
* @param context
*/
public LinearAdapter(Context context) {
mContext = context;
mjihe=new ArrayList <>();
}
/**
* 更新数据
* @param jihe
*/
public void setMjihe(List <Bean.DataBean> jihe) {
this.mjihe = jihe;
notifyDataSetChanged();
}
/**
* 添加数据:
* 添加到点击条目的位置--->需要点击条目的下标
* 添加的是点击条目对应的数据----->下标对应的数据
*/
public void additem(int position, Bean.DataBean bean){
mjihe.add(position,bean);
notifyItemInserted(position);
}
/**
* 删除
*/
public void deleteData(int i){
mjihe.remove(i);
notifyItemRemoved(i);
// 有动画,出现闪频效果
// notifyItemRangeRemoved(i,mjihe.size());
}
/**
* 布局
* @param viewGroup
* @param i
* @return
*/
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
View view=LayoutInflater.from(mContext).inflate(R.layout.linear_item,viewGroup,false);
return new ViewHolder(view);
}
/**
* 数据绑定到视图上
* @param viewHolder
* @param i
*/
@Override
public void onBindViewHolder(@NonNull final ViewHolder viewHolder, final int i) {
Bean.DataBean dataBean = mjihe.get(i);
Glide.with(mContext).load(dataBean.getIcon()).into(viewHolder.mImageView);
viewHolder.mTextView.setText(dataBean.getName());
//图片点击事件
viewHolder.mImageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//点击的下标-->返回给接口
mDeleteBack.delete(viewHolder.getLayoutPosition());
}
});
//长按
viewHolder.mImageView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
mDeleteBack.addData(viewHolder.getLayoutPosition());
return true;
}
});
}
/**
* 得到条目数量
* @return
*/
@Override
public int getItemCount() {
return mjihe.size();
}
/**
* 定义内部类
*/
public static class ViewHolder extends RecyclerView.ViewHolder {
TextView mTextView;
ImageView mImageView;
/**
* 获取资源ID
* @param itemView
*/
public ViewHolder(@NonNull View itemView) {
super(itemView);
mTextView=itemView.findViewById(R.id.LinearText);
mImageView=itemView.findViewById(R.id.LinearImage);
}
}
/**
* 通过接口回调的方式对条目进行点击事件
*/
public interface DeleteBack{
//定义删除的方法
void delete(int position);
//定义添加的方法
void addData(int position);
}
static DeleteBack mDeleteBack;
public void setDeleteBack(DeleteBack deleteBack) {
mDeleteBack = deleteBack;
}
}