前言：
各位同学大家好，有段时间没有给大家更新文章了，具体多久我也不记得了。因为最近在工作更新了一些新功能，用到了ItemTouchHelper 所以就记录一下
效果图
screenrecorder-2022-12-13-10-57-47-573[00_00_12--00_00_32].gif
image.png
image.png
image.png
具体实现 ：
布局文件
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".LoginActivity">
<LinearLayout
android:layout_width="360dp"
android:layout_height="360dp"
android:layout_centerInParent="true"
android:orientation="vertical"
android:layout_gravity="center"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:background="@drawable/activity_background_white">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="56.89dp"
android:background="@drawable/activity_head_background_gray">
<TextView
android:id="@+id/login_account_headlinetext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/account_login"
android:textSize="25.2dp"
android:layout_centerInParent="true"
android:textColor="@color/activityTitle"
android:visibility="visible"
/>
<RelativeLayout
android:id="@+id/help_imageview_rl"
android:layout_width="88.89dp"
android:layout_height="match_parent"
android:layout_alignParentRight="true"
android:visibility="visible"
>
<ImageView
android:id="@+id/help_imageview"
android:layout_width="62.67dp"
android:layout_height="16.89dp"
android:src="@drawable/help"
android:layout_centerVertical="true"
android:layout_marginRight="20.44dp"
android:visibility="visible"
/>
</RelativeLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="122.58dp"
android:layout_marginTop="7.64dp">
<LinearLayout
android:layout_width="300dp"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_centerInParent="true">
<!---->
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="59.48dp"
android:focusable="true"
android:focusableInTouchMode="true"
>
<ImageView
android:layout_width="23.11dp"
android:layout_height="23.56dp"
android:src="@drawable/user_image"
android:id="@+id/user_icon_image"
android:layout_centerVertical="true"
/>
<RelativeLayout
android:id="@+id/select_loginaccount_rl"
android:layout_width="44.45dp"
android:layout_height="match_parent"
android:layout_alignParentRight="true">
<ImageView
android:id="@+id/select_loginaccount_image"
android:layout_width="16.45dp"
android:layout_height="8.89dp"
android:layout_alignParentRight="true"
android:layout_marginRight="16.89dp"
android:layout_centerVertical="true"
android:src="@drawable/account_list"/>
</RelativeLayout>
<ImageView
android:id="@+id/account_login_detete"
android:layout_width="23.56dp"
android:layout_height="23.11dp"
android:layout_marginRight="4.45dp"
android:visibility="gone"
android:layout_centerVertical="true"
android:src="@drawable/delete_image"
android:layout_toLeftOf="@id/select_loginaccount_rl"
/>
<EditText
android:id="@+id/login_account_ed"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_marginLeft="10dp"
android:layout_marginBottom="0dp"
android:layout_toLeftOf="@id/account_login_detete"
android:layout_toRightOf="@id/user_icon_image"
android:background="@null"
android:editable="true"
android:gravity="center_vertical"
android:hint="@string/account_input_tips"
android:imeOptions="actionNext"
android:textColor="@color/activityTitle"
android:textColorHint="@color/activityText"
android:textSize="20dp" />
</RelativeLayout>
<!-- android:layout_marginTop="12.45dp"-->
<TextView
android:id="@+id/login_account_textview"
android:layout_width="300dp"
android:layout_height="1.78dp"
android:background="@color/activityTextLine"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="59.48dp"
>
<ImageView
android:layout_width="23.11dp"
android:layout_height="23.56dp"
android:src="@drawable/account_password"
android:id="@+id/user_password_image"
android:layout_centerVertical="true"
/>
<ImageView
android:id="@+id/look_psw_image"
android:layout_width="33.33dp"
android:layout_height="18.22dp"
android:layout_alignParentRight="true"
android:layout_marginRight="7.56dp"
android:layout_centerVertical="true"
android:src="@drawable/account_list_eye"
/>
<ImageView
android:id="@+id/account_loginpsw_detete"
android:layout_width="23.56dp"
android:layout_height="23.11dp"
android:layout_marginRight="8dp"
android:visibility="gone"
android:layout_centerVertical="true"
android:src="@drawable/delete_image"
android:layout_toLeftOf="@id/look_psw_image"
/>
<EditText
android:id="@+id/account_login_psw"
android:layout_width="182.22dp"
android:layout_height="match_parent"
android:layout_centerVertical="true"
android:hint="@string/password_input_tips"
android:textColorHint="@color/activityText"
android:layout_marginLeft="35.56dp"
android:background="@null"
android:gravity="center_vertical"
android:imeOptions="actionNext"
android:textColor="@color/activityTitle"
android:textSize="20dp"
android:password="true"
/>
</RelativeLayout>
<TextView
android:layout_width="300dp"
android:layout_height="1.78dp"
android:background="@color/activityTextLine"
/>
</LinearLayout>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="24.45dp"
android:layout_marginTop="22.22dp"
>
<RelativeLayout
android:id="@+id/automaticlogin_rl"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@+id/automaticlogin_image"
android:layout_width="15.11dp"
android:layout_height="15.11dp"
android:layout_gravity="center"
android:src="@drawable/accept_useragreement_true"
android:layout_centerVertical="true"
android:layout_marginLeft="33.78dp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/automaticlogin_image"
android:layout_centerVertical="true"
android:text="自动登录"
android:textSize="18.67dp"
android:layout_marginLeft="8.89dp"
/>
</RelativeLayout>
<LinearLayout
android:id="@+id/forget_password_rl"
android:layout_width="100.45dp"
android:layout_height="24.45dp"
android:orientation="vertical"
android:layout_marginRight="22.22dp"
android:layout_alignParentRight="true">
<TextView
android:id="@+id/forget_password_text"
android:layout_width="match_parent"
android:layout_height="22.22dp"
android:textColor="@color/activityYelloButton"
android:text="@string/forget_password"
android:layout_gravity="center"
android:textSize="18.67dp"
/>
</LinearLayout>
</RelativeLayout>
<RelativeLayout
android:layout_marginTop="12.45dp"
android:layout_width="match_parent"
android:layout_height="53.33dp">
<Button
android:id="@+id/promptly_login"
android:layout_width="310.67dp"
android:layout_height="56.89dp"
android:textSize="24dp"
android:layout_marginLeft="6.22dp"
android:layout_centerInParent="true"
android:textColor="@color/activityButtonTextColor"
android:background="@drawable/blue_button_style"
android:text="@string/now_login"/>
</RelativeLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="26.67dp"
android:layout_marginTop="22.22dp"
android:orientation="horizontal"
android:visibility="gone"
>
<RelativeLayout
android:id="@+id/mobile_phone_rl"
android:layout_width="0px"
android:layout_height="match_parent"
android:layout_weight="1"
>
<TextView
android:id="@+id/mobile_phone_text"
android:layout_width="84.44dp"
android:layout_height="match_parent"
android:textSize="20.44dp"
android:layout_alignParentLeft="true"
android:textColor="@color/activityTitle"
android:layout_marginLeft="33.33dp"
android:text="@string/message_register"/>
</RelativeLayout>
<RelativeLayout
android:id="@+id/register_rl"
android:layout_width="0px"
android:layout_height="match_parent"
android:layout_weight="1"
>
<TextView
android:id="@+id/register_textview"
android:layout_width="84.44dp"
android:layout_height="match_parent"
android:textSize="20.44dp"
android:textColor="@color/activityTitle"
android:layout_alignParentRight="true"
android:layout_marginRight="33.33dp"
android:text="手机注册"
/>
</RelativeLayout>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
布局预览
image.png
我们要实现的功能就是要把登录后的数据缓存到一个list 列表里面 然后能够滑动 删除 还可以长按移动每一个子元素 。
-
1 缓存数据 并用list列表展示出来
首先缓存逻辑我们要用到 SharedPreferences 来缓存数据 当然你用sqlite 也可以 我后面会补一个这样的版本
自定义PopupWindow
package com.example.accountrecord;
import java.util.List;
import android.content.Context;
import android.graphics.drawable.ColorDrawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.PopupWindow;
import androidx.recyclerview.widget.ItemTouchHelper;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.example.accountrecord.recycler.MessageitemtochCallback;
import com.example.accountrecord.recycler.Myadapter;
import com.example.accountrecord.recycler.OnItemClickCallback;
import com.example.accountrecord.recycler.StartdragCallback;
/**
* 自定义PopupWindow 主要用来显示ListView
*
* @param
* @param
* @author Ansen
* @create time 2015-11-3
*/
public class SpinerPopWindow extends PopupWindow {
private static final String TAG = "SpinerPopWindow";
private LayoutInflater inflater;
private List<SelectPhone> list;
private Context context;
private RemoveUserinfoListner removeUserinfoListner; //删除item 数据响应回调
private RecyclerView recyclerView;
private Myadapter myadapter;
ItemTouchHelper itemTouchHelper;
private OnItemClickCallback onItemClickCallback; //item 点击回调
public SpinerPopWindow(Context context, List<SelectPhone> list,
OnItemClickCallback onItemClickCallback, RemoveUserinfoListner removeUserinfoListner) {
super(context);
inflater = LayoutInflater.from(context);
this.list = list;
this.context = context;
this.removeUserinfoListner = removeUserinfoListner;
this.onItemClickCallback=onItemClickCallback;
init();
}
private void init() {
View view = inflater.inflate(ResourceUtil.getLayoutId(context, "select_phonedialog"), null);
setContentView(view);
setFocusable(true);
setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
ColorDrawable dw = new ColorDrawable(0x00);
setBackgroundDrawable(dw);
recyclerView=view.findViewById(R.id.select_listview);
recyclerView.setLayoutManager(new LinearLayoutManager(context));
myadapter=new Myadapter(list, context,removeUserinfoListner,onItemClickCallback,new StartdragCallback() {
@Override
public void startdrag(RecyclerView.ViewHolder viewHolder) {
itemTouchHelper.startDrag(viewHolder);
}
});
recyclerView.setAdapter(myadapter);
ItemTouchHelper.Callback callback=new MessageitemtochCallback(myadapter);
itemTouchHelper=new ItemTouchHelper(callback);
itemTouchHelper.attachToRecyclerView(recyclerView);
if (list != null) {
recyclerView.setAdapter(myadapter);
}
}
}
自定义popupwindow 布局文件
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<RelativeLayout
android:layout_width="300dp"
android:layout_height="200dp"
android:background="@color/activityTextWhite"
android:layout_centerHorizontal="true"
>
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/select_listview"
android:layout_width="match_parent"
android:layout_height="wrap_content">
</androidx.recyclerview.widget.RecyclerView>
</RelativeLayout>
</RelativeLayout>
image.png
我们这边的想法比较明确就是 我们在点击登录输入框右边图片三角形 我们讲popupwindow 弹出来 然后展示一个列表 显示出我们缓存在本地的账号 信息 那么我们这边用 RecyclerView 来显示这个列表.但是如果我们要处理拖住item 滑动item 等到操作 我们就需要实现 ItemTouchHelper .callback 这个接口
package com.example.accountrecord.recycler;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.ItemTouchHelper;
import androidx.recyclerview.widget.RecyclerView;
public class MessageitemtochCallback extends ItemTouchHelper.Callback {
private ItemTouchAdapterCallback itemTouchAdapterCallback;
public MessageitemtochCallback(ItemTouchAdapterCallback itemTouchAdapterCallback) {
this.itemTouchAdapterCallback = itemTouchAdapterCallback;
}
/**
* @param recyclerView
* @param viewHolder
* @return
* 判断是否需要监听哪个动作 侧滑 拖拽
*/
@Override
public int getMovementFlags(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder) {
int dragFlags=ItemTouchHelper.UP|ItemTouchHelper.DOWN;
int swipeFlags=ItemTouchHelper.LEFT|ItemTouchHelper.RIGHT;
return makeMovementFlags(dragFlags,swipeFlags);
}
/**
* @param recyclerView
* @return
* 拖拽的时候回调这个方法
*
*/
@Override
public boolean onMove(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder srcholder,
@NonNull RecyclerView.ViewHolder targethodler) {
/**
* 刷新数据
* 刷新界面(刷新adapter)
*
*/
itemTouchAdapterCallback.onitemmove(srcholder.getAdapterPosition(),targethodler.getAdapterPosition());
return false;
}
@Override
public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int position) {
itemTouchAdapterCallback.onitemSwiped(viewHolder.getAdapterPosition());
}
@Override
public boolean isLongPressDragEnabled() {
return true;
}
}
我们在 getMovementFlags 这个回调方法里面设置 需要监听那个动作 侧滑 拖拽 然后在 onMove 方法里面处理刷新数据的操作
/**
* @param recyclerView
* @return
* 拖拽的时候回调这个方法
*
*/
@Override
public boolean onMove(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder srcholder,
@NonNull RecyclerView.ViewHolder targethodler) {
/**
* 刷新数据
* 刷新界面(刷新adapter)
*
*/
itemTouchAdapterCallback.onitemmove(srcholder.getAdapterPosition(),targethodler.getAdapterPosition());
return false;
}
然后是我们的适配器处理
适配器
package com.example.accountrecord.recycler;
import android.annotation.SuppressLint;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;
import com.example.accountrecord.DeleteaccountDialog;
import com.example.accountrecord.Deleteaccountlistener;
import com.example.accountrecord.R;
import com.example.accountrecord.RemoveUserinfoListner;
import com.example.accountrecord.ResourceUtil;
import com.example.accountrecord.SelectPhone;
import com.example.accountrecord.SharedPreferencesUtils;
import java.util.Collections;
import java.util.List;
public class Myadapter extends RecyclerView.Adapter<Myadapter.MyViewHodler> implements ItemTouchAdapterCallback{
private List<SelectPhone> data;
private StartdragCallback satrtdragCallback;
private Context context;
private RemoveUserinfoListner removeUserinfoListner;
private OnItemClickCallback onItemClickListener;
public Myadapter(List<SelectPhone> data, Context context, RemoveUserinfoListner removeUserinfoListner,
OnItemClickCallback onItemClickListener,StartdragCallback satrtdragCallback ) {
this.data = data;
this.satrtdragCallback = satrtdragCallback;
this.context=context;
this.removeUserinfoListner=removeUserinfoListner;
this.onItemClickListener=onItemClickListener;
}
@NonNull
@Override
public Myadapter.MyViewHodler onCreateViewHolder(@NonNull ViewGroup parent, int i) {
View view=LayoutInflater.from(parent.getContext()).inflate(R.layout.selectphone_item,parent,false);
return new MyViewHodler(view);
}
@Override
public void onBindViewHolder(@NonNull final Myadapter.MyViewHodler myViewHodler, @SuppressLint("RecyclerView") final int position) {
final SelectPhone selectPhone = (SelectPhone) data.get(position);
myViewHodler.phonetextview.setText(selectPhone.getName());
myViewHodler.account_rl.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
satrtdragCallback.startdrag(myViewHodler);
return false;
}
});
myViewHodler.deleterl.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// data.remove(position);
DeleteaccountDialog deleteaccountDialog = new DeleteaccountDialog(context, selectPhone.getName(), new Deleteaccountlistener() {
@Override
public void deleteaccountsuccess() {
notifyDataSetChanged();
removeUserinfoListner.removeuserinfosuccess(position,
(List<SelectPhone>)data);
}
});
deleteaccountDialog.show();
}
});
myViewHodler.account_rl.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
onItemClickListener.onClick( myViewHodler.account_rl, position);
}
});
}
@Override
public int getItemCount() {
return data.size();
}
public class MyViewHodler extends RecyclerView.ViewHolder{
TextView phonetextview;
ImageView imageview;
RelativeLayout deleterl;
RelativeLayout account_rl;
public MyViewHodler(@NonNull View itemView) {
super(itemView);
phonetextview = itemView.findViewById(ResourceUtil.getId(context, "account_textview"));//account_textview //account_image
imageview = itemView.findViewById(ResourceUtil.getId(context, "account_image"));
deleterl = itemView.findViewById(ResourceUtil.getId(context, "delete_account_rl"));
account_rl=itemView.findViewById(ResourceUtil.getId(context,"account_rl"));
}
}
@Override
public boolean onitemmove(int fromposition, int toposition) {
Collections.swap(data ,fromposition,toposition);
SharedPreferencesUtils.putSelectBean(context,data,"qqmessage");
notifyItemMoved(fromposition,toposition);
return false;
}
@Override
public void onitemSwiped(int position) {
data.remove(position);
notifyItemRemoved(position);
}
}
我们的适配器实现了 ItemTouchAdapterCallback 这个接口然后onitemmove 方法和 onitemSwiped 方法，然后分别 处理侧滑监听和拖拽监听的
@Override
public boolean onitemmove(int fromposition, int toposition) {
Collections.swap(data ,fromposition,toposition);
SharedPreferencesUtils.putSelectBean(context,data,"qqmessage");
notifyItemMoved(fromposition,toposition);
return false;
}
@Override
public void onitemSwiped(int position) {
data.remove(position);
notifyItemRemoved(position);
}
LoginActivity 实现
package com.example.accountrecord;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Context;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.PopupWindow;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.example.accountrecord.recycler.OnItemClickCallback;
import java.util.ArrayList;
import java.util.List;
public class LoginActivity extends AppCompatActivity implements View.OnClickListener {
private static final String TAG = "LoginActivity";
private EditText account_ed ,password_ed;
private String account, password;
private Boolean flag=false;
private Button loginbtn;
List<SelectPhone> getdata=null;
private Context mContext=LoginActivity.this;
private TextView textView;
private RelativeLayout select_loginaccount_rl;
private String cacheaccount ,cachepsw;
private SpinerPopWindow mSpinerPopWindow;
List<SelectPhone> data=new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
initview();
}
private void initview() {
account_ed=findViewById(R.id.login_account_ed);
password_ed=findViewById(R.id.account_login_psw);
loginbtn=findViewById(R.id.promptly_login);
loginbtn.setOnClickListener(this);
textView=findViewById(R.id.login_account_textview);
select_loginaccount_rl=findViewById(R.id.select_loginaccount_rl);
select_loginaccount_rl.setOnClickListener(this);
getdata = SharedPreferencesUtils.getSelectBean(mContext, "selectphone");
if (getdata != null && getdata.size() > 0) {
SelectPhone phone = getdata.get(0);
cacheaccount = phone.getName();
cachepsw=phone.getPassword();
if (!TextUtils.isEmpty(cacheaccount)) {
account_ed.setText(cacheaccount);
password_ed.setText(cachepsw);
} else {
account_ed.setText(null);
password_ed.setText(null);
}
}
mSpinerPopWindow = new SpinerPopWindow(LoginActivity.this,
getdata, onItemClickListener, removeUserinfoListner);
mSpinerPopWindow.setOnDismissListener(dismissListener);
}
//删除用户缓存信息
private RemoveUserinfoListner removeUserinfoListner = new RemoveUserinfoListner() {
@Override
public void removeuserinfosuccess(int position, List<SelectPhone> data) {
if (data != null && data.size() > 0) {
data.remove(position);
SharedPreferencesUtils.putSelectBean(mContext, data, "selectphone");
flag = false;
List<SelectPhone> getdata = SharedPreferencesUtils.
getSelectBean(LoginActivity.this, "selectphone");
if (getdata != null && getdata.size() > 0) {
SelectPhone selectPhone = getdata.get(0);
account_ed.setText(selectPhone.getName());
password_ed.setText(selectPhone.getPassword());
} else {
account_ed.setText(null);
password_ed.setText(null);
}
} else {
Toast.makeText(mContext,"缓存数据为空",Toast.LENGTH_LONG).show();
}
}
};
/**
* 监听popupwindow取消
*/
private PopupWindow.OnDismissListener dismissListener = new PopupWindow.OnDismissListener() {
@Override
public void onDismiss() {
flag = false;
}
};
/**
* popupwindow显示的ListView的item点击事件
*/
private OnItemClickCallback onItemClickListener=new OnItemClickCallback() {
@Override
public void onClick(View parent, int position) {
mSpinerPopWindow.dismiss();
flag = false;
SelectPhone selectPhone = getdata.get(position);
String getusername = selectPhone.getName();
String psw = selectPhone.getPassword();
account_ed.setText(getusername);
password_ed.setText(psw);
}
};
@Override
public void onClick(View view) {
switch (view.getId()){
case R.id.promptly_login:
login();
break;
case R.id.select_loginaccount_rl:
if (flag) {
flag = false;
if (mSpinerPopWindow != null) {
mSpinerPopWindow.dismiss();
} else {
}
} else {
flag = true;
if (mSpinerPopWindow != null) {
mSpinerPopWindow.showAsDropDown(textView);
} else {
}
}
break;
default:
break;
}
}
private void login(){
account=account_ed.getText().toString();
password=password_ed.getText().toString();
if(TextUtils.isEmpty(account)||TextUtils.isEmpty(password)){
Toast.makeText(mContext,"账号或者密码输入不能为空",Toast.LENGTH_LONG).show();
}
SelectPhone selectPhone=new SelectPhone();
selectPhone.setName(account);
selectPhone.setPassword(password);
List<SelectPhone> getdata = SharedPreferencesUtils.getSelectBean(LoginActivity.this, "selectphone");
if (getdata != null && getdata.size() > 0) {
getdata.add(0,selectPhone);
SharedPreferencesUtils.putSelectBean(LoginActivity.this, getdata, "selectphone");
} else {
data.add(selectPhone);
SharedPreferencesUtils.putSelectBean(LoginActivity.this, data, "selectphone");
}
Toast.makeText(mContext,"登录成功数据缓存成功",Toast.LENGTH_LONG).show();
finish();
}
}
我们在 LoginActivity 界面的逻辑就比较简单了 我们只需要缓存数据以及在点击登录button的时候 缓存数据到本地即可.
最后总结：
这个demo 主要是对recyclerview 里面的 ItemTouchHelper.Callback 类里面拖拽方法和侧滑时间方法的处理 ,然后配合recyclerview 来实现这样的一个本地数据缓存的列表的效果 。 最后希望我都文章能帮助各位同学工作和学习 。如果觉得文章还不错希望能给我一个star 和转发
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