listview中CheckBox的监听回调

约定不等于承诺〃 2022-07-15 09:18 176阅读 0赞

调用：

public class Messages extends BaseAvtivity implements View.OnClickListener {
        private ListView messages;
        private ArrayList<messageData> list;
        private listAdapter_message  mAdapter;
        private LinearLayout ll_message_delete;
        private TextView message_delete;
        private int selected_num;
        private int[] selected;
        private TitleBuilder titleBuilder;
        private View title01,title02;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_messages);
            title01 = findViewById(R.id.message_title1);
            title02 = findViewById(R.id.message_title2);
            setBar();
            init();
            mAdapter = new listAdapter_message(getApplicationContext(),list);
    
            messages.setAdapter(mAdapter);
            mAdapter.setChecked(new listAdapter_message.onChecked() {
                @Override
                public void CheckedChanged(int position,boolean isChecked) {
    
                        if (isChecked){
                            if (selected_num < mAdapter.getCount()){
                                selected_num++;
                            }
                            selected[position] = 101;
                            if (selected_num == mAdapter.getCount()){
                                titleBuilder.setRightText("全不选");
                                titleBuilder.setTitle("已选择"+mAdapter.getCount()+"个");
                                mAdapter.allcheck = true;
                            }else {
                                titleBuilder.setTitle("已选择"+selected_num+"个");
                            }
    
                        }else {
                            if (selected_num > 0){
                                selected_num--;
                            }
                            selected[position] = 0;
                            titleBuilder.setRightText("全选");
                            if (selected_num == 0){
                                titleBuilder.setTitle("选择消息");
                            }else {
                                titleBuilder.setTitle("已选择"+selected_num+"个");
                            }
                            mAdapter.allcheck = false;
                        }
    
    
                }
    
    
            });
            messages.setOnItemClickListener(new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                    //点击Item设置check的点击
                    CheckBox checkBox = (CheckBox) view.findViewById(R.id.message_checkbox);
                    if (checkBox.isChecked()){
                        checkBox.setChecked(false);
                    }else {
                        checkBox.setChecked(true);
                    }
    
                }
            });
        }
        private void init(){
            messages = (ListView) findViewById(R.id.messages_listview);
            ll_message_delete = (LinearLayout) findViewById(R.id.ll_message_delete);
            message_delete = (TextView) findViewById(R.id.message_delete);
            list = new ArrayList<messageData>();
            list.add(new messageData("新消息1","2016/10/27 10:25:16"));
            list.add(new messageData("新消息2","2016/10/28 16:35:30"));
            list.add(new messageData("新消息3","2016/10/29 09:45:15"));
            list.add(new messageData("新消息4","2016/10/29 11:25:38"));
            selected = new int[list.size()];
            message_delete.setOnClickListener(this);
    
        }
    
        public void setBar() {
    
            new TitleBuilder(title01)
                    .setTitle("我的消息")
                    .setLeftImage(R.drawable.back_white)
                    .setLeftButtonOnListenner(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            finish();
                        }
                    })
                .setRightImage(R.drawable.revise)
                .setRightButtonOnListenner(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if (mAdapter.getCount() == 0){
                        ToastUtils.showToast(getApplicationContext(),"无消息",Toast.LENGTH_SHORT);
                    }else {
                        title01.setVisibility(View.GONE);
                        title02.setVisibility(View.VISIBLE);
                        titleBuilder = new TitleBuilder(title02);
                        setTitle();
                        ll_message_delete.setVisibility(View.VISIBLE);
                        mAdapter.ischeck = true;
                        mAdapter.notifyDataSetChanged();
                    }
    
                }
            });
        }
    
        private void setTitle(){
            titleBuilder.setViewVisibilityGONE()
                        .setLeftText("取消")
                        .setRightText("全选")
                        .setTitle("选择消息")
                        .setLeftTextOnListenner(new View.OnClickListener() {
                            @Override
                            public void onClick(View v) {
                                title02.setVisibility(View.GONE);
                                title01.setVisibility(View.VISIBLE);
                                setBar();
                                fadedeltetebtn();
                            }
                        })
                        .setRightTextOnListenner(new View.OnClickListener() {
                            @Override
                            public void onClick(View v) {
                                if (mAdapter.allcheck){
                                    titleBuilder.setRightText("全选");
                                    titleBuilder.setTitle("选择消息");
                                    mAdapter.allcheck = false;
                                }else {
                                    titleBuilder.setRightText("全不选");
                                    titleBuilder.setTitle("已选择"+mAdapter.getCount()+"个");
                                    mAdapter.allcheck = true;
                                }
                                mAdapter.notifyDataSetChanged();
                            }
                        });
        }
        @Override
        public void onClick(View v) {
            switch (v.getId()){
                case R.id.message_delete:
                    if (selected_num == 0){
                        ToastUtils.showToast(getApplicationContext(),"请选择",Toast.LENGTH_SHORT);
                        break;
                    }
                    if (mAdapter.allcheck){
                            mAdapter.deleteAllItem();
                        }else {
                            mAdapter.deleteItem(selected);
                        }
                    title02.setVisibility(View.GONE);
                    title01.setVisibility(View.VISIBLE);
                    setBar();
                    fadedeltetebtn();
                    break;
                default:
                    break;
            }
        }
    
        private void fadedeltetebtn(){
            mAdapter.ischeck = false;
            mAdapter.allcheck = false;
            ll_message_delete.setVisibility(View.GONE);
            selected_num = 0;
            for (int i = 0;i < selected.length; i++){
                selected[i] = 0;
            }
            mAdapter.notifyDataSetChanged();
    
        }
    
        @Override
        protected void onDestroy() {
            super.onDestroy();
            mAdapter.ischeck = false;
            mAdapter.allcheck = false;
            ll_message_delete.setVisibility(View.GONE);
            mAdapter.notifyDataSetChanged();
        }
    }

adapter：

package com.example.cuboo.mlcircles.adapter;
    
    import android.content.Context;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.BaseAdapter;
    import android.widget.CheckBox;
    import android.widget.CompoundButton;
    import android.widget.ImageView;
    import android.widget.TextView;
    import android.widget.Toast;
    
    import com.example.cuboo.mlcircles.DataClass.Data_Map;
    import com.example.cuboo.mlcircles.DataClass.messageData;
    import com.example.cuboo.mlcircles.R;
    import com.example.cuboo.mlcircles.utils.ToastUtils;
    
    import java.util.List;
    
    /**
     * Created by cuboo on 2016/10/21.
     */
    
    public class listAdapter_message extends BaseAdapter  {
        private Context context;
        private List<messageData> list;
        public static boolean ischeck;
        public  static boolean allcheck;
        private onChecked checked;
    
    
        public void setChecked(onChecked checked) {
            this.checked = checked;
        }
    
        public listAdapter_message(Context context, List list){
            this.context = context;
            this.list = list;
        }
        @Override
        public int getCount() {
            return list.size();
        }
    
        @Override
        public Object getItem(int position) {
            return list.get(position);
        }
    
        @Override
        public long getItemId(int position) {
            return position;
        }
    
        @Override
        public View getView(final int position, View convertView, ViewGroup parent) {
            //获得每个item
            messageData data_map = (messageData) list.get(position);
            ViewHolder viewHolder = null;
            if (convertView == null){
                //实例化对象
                convertView = LayoutInflater.from(context).inflate(R.layout.item_messages,null);
                viewHolder = new ViewHolder();
                viewHolder.title = (TextView) convertView.findViewById(R.id.message_item_text);
                viewHolder.time = (TextView) convertView.findViewById(R.id.message_item_time);
                viewHolder.checkBox = (CheckBox) convertView.findViewById(R.id.message_checkbox);
                convertView.setTag(viewHolder);
            }else {
                viewHolder = (ViewHolder)convertView.getTag();
            }
            //设置控件内容
            viewHolder.title.setText(data_map.getmTitle());
            viewHolder.time.setText(data_map.getmTime());
            if (ischeck){
                if (allcheck){
                    viewHolder.checkBox.setChecked(true);
                }else {
                    viewHolder.checkBox.setChecked(false);
                }
                viewHolder.checkBox.setVisibility(View.VISIBLE);
                viewHolder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
                    @Override
                    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                        if (checked != null){
                            //回调方法传参数
                            checked.CheckedChanged(position,isChecked);
                        }
                    }
                });
            }else {
                viewHolder.checkBox.setChecked(false);
                viewHolder.checkBox.setVisibility(View.GONE);
            }
    
            return convertView;
        }
    
    
        public class ViewHolder{
            TextView title;
            TextView time;
            CheckBox checkBox;
        }
    
        public static interface onChecked{
            public void CheckedChanged(int position,boolean isChecked);
    
        }
        //删除单个item
        public void deleteItem(int[] index){
            for (int i = list.size()-1; i >= 0;i--){
                if (index[i] == 101){
                    list.remove(i);
                    notifyDataSetChanged();
                    index[i] = 0;
                }
            }
        }
    
        //删除全部item
        public void deleteAllItem(){
            list.clear();
            notifyDataSetChanged();
        }
    
    }

xml:

<?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:id="@+id/activity_messages"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        tools:context="com.example.cuboo.mlcircles.activity.Messages">
        <include
            android:id="@+id/message_title1"
            layout="@layout/title_theme"/>
        <include
            android:id="@+id/message_title2"
            layout="@layout/title_theme"
            android:visibility="gone"/>
        <ListView
            android:id="@+id/messages_listview"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="16dp"
            android:layout_marginRight="16dp"
            android:layout_weight="1">
        </ListView>
    
        <View
            android:layout_width="match_parent"
            android:layout_height="0.5dp"
            android:background="@color/gray01"/>
        <LinearLayout
            android:id="@+id/ll_message_delete"
            android:orientation="vertical"
            android:layout_gravity="bottom"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:layout_marginRight="16dp"
            android:layout_marginLeft="16dp"
            android:visibility="gone">
            <TextView
                android:id="@+id/message_delete"
                android:text="删除"
                android:layout_gravity="center"
                android:gravity="center"
                android:layout_weight="1"
                android:textSize="16sp"
                android:layout_width="wrap_content"
                android:layout_height="match_parent" />
        </LinearLayout>
    </LinearLayout>

![Center][]

xml:

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="16dp"
        android:layout_marginRight="16dp">
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="56dp"
            android:orientation="horizontal">
            <TextView
                android:id="@+id/message_item_text"
                android:gravity="center|left"
                android:text="新消息。"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:textColor="@color/colorGrey"/>
            <TextView
                android:id="@+id/message_item_time"
                android:gravity="center|right"
                android:text="2016/10/28 15:26:30"
                android:textColor="@color/gray"
                android:textSize="10sp"
                android:layout_marginRight="16dp"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:layout_weight="1"/>
            <CheckBox
                android:id="@+id/message_checkbox"
                android:layout_gravity="center"
                android:gravity="center"
                android:focusable="false"
                android:layout_width="24dp"
                android:layout_height="24dp"
                android:buttonTint="@color/colorGreen"
                android:button="@null"
                android:background="@drawable/checkbox_selector"
                android:visibility="gone"/>
        </LinearLayout>
    </LinearLayout>

selector:

<?xml version="1.0" encoding="utf-8"?>
    <selector xmlns:android="http://schemas.android.com/apk/res/android">
        <item android:state_selected="true" android:drawable="@drawable/check01"/>
        <item android:state_pressed="true" android:drawable="@drawable/check01"/>
        <item android:state_checked="true" android:drawable="@drawable/check01"/>
        <item android:state_checked="false" android:drawable="@drawable/check02"/>
    </selector>

[Center]: /images/20220715/53742d39775f4744bd3a448f35d64576.png