ListView 控件点击listview item 实时更新数据案例.
效果如下：
点击list item 右边的选中状态对应的发生改变。
1、布局文件
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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=".ChoseRoomActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="@+id/listview_all_room"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:cacheColorHint="@android:color/transparent"
android:divider="@android:color/transparent"
android:dividerHeight="0dp"
android:listSelector="@android:color/transparent"
android:layout_marginTop="30dp"
android:layout_marginRight="30dp"
android:layout_marginLeft="30dp"
/>
</RelativeLayout>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
2、activity
package com.jas.activity;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import com.jas.adapter.RoomAdapter;
import com.jas.model.RoomModel;
import java.util.ArrayList;
import java.util.List;
public class ChoseRoomActivity extends AppCompatActivity {
private List<RoomModel> list;
private ListView listView;
private RoomAdapter roomAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chose_room);
list = new ArrayList<>();
list.add(new RoomModel("0001","客厅"));
list.add(new RoomModel("0002","主卧"));
list.add(new RoomModel("0003","次卧"));
list.add(new RoomModel("0004","厨房"));
list.add(new RoomModel("0005","卫生间"));
initView();
}
private void initView(){
listView = findViewById(R.id.listview_all_room);
roomAdapter = new RoomAdapter(this,list);
listView.setAdapter(roomAdapter);
roomAdapter.SetOnClickListener(new RoomAdapter.OnClickListener() {
@Override
public void ClickListener(String roomName) {
setSelected(roomName);
}
});
}
private void setSelected(String roomName){
for(RoomModel r : list){
if(roomName.equals(r.getRoomName())){
r.setSelected(true);
}else{
r.setSelected(false);
}
}
roomAdapter.notifyDataSetChanged();
}
}
3、RoomAdapter
package com.jas.adapter;
import android.content.Context;
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.jas.activity.R;
import com.jas.model.RoomModel;
import java.util.List;
public class RoomAdapter extends BaseAdapter {
private List<RoomModel> mlist;
private LayoutInflater inflater;
private Context context;
private OnClickListener onClickListener;
public RoomAdapter(Context context, List<RoomModel> list) {
this.context = context;
this.mlist = list;
inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
return mlist.size();
}
@Override
public Object getItem(int position) {
return mlist.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if(convertView==null)
{
convertView = inflater.inflate(R.layout.item_layout_room,null);
}
TextView idView = (TextView)convertView.findViewById(R.id.tv_room);
ImageView ivView = (ImageView)convertView.findViewById(R.id.iv_status);
final RoomModel p = mlist.get(position);
final int pos = position;
String roomName = p.getRoomName();
idView.setText(roomName);
if(p.isSelected()){
ivView.setImageResource(R.drawable.ic_room_selected);
}else{
ivView.setImageResource(R.drawable.ic_room_no_selected);
}
idView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(onClickListener!=null){
onClickListener.ClickListener(roomName);
}
}
});
ivView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(onClickListener!=null){
onClickListener.ClickListener(roomName);
}
}
});
return convertView;
}
public void SetOnClickListener(OnClickListener clickListener){
onClickListener = clickListener;
}
public interface OnClickListener{
void ClickListener(String name);
}
}
4、list item 布局文件，item_layout_room.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">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/shape_dev_bg"
android:orientation="horizontal"
android:paddingTop="20dp"
android:paddingBottom="20dp"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp">
<TextView
android:id="@+id/tv_room"
android:layout_weight="1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="12"
android:textColor="@color/home_txt2"
android:layout_marginLeft="20dp"
android:textSize="16sp"></TextView>
<ImageView
android:id="@+id/iv_status"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_room_no_selected"
android:layout_marginRight="20dp"></ImageView>
</LinearLayout>
</LinearLayout>
5、RoomModel
package com.jas.model;
public class RoomModel {
public RoomModel() {
}
public RoomModel(String roomId, String roomName) {
this.roomId = roomId;
this.roomName = roomName;
}
private String roomId;
private String roomName;
private boolean selected;
public String getRoomId() {
return roomId;
}
public void setRoomId(String roomId) {
this.roomId = roomId;
}
public String getRoomName() {
return roomName;
}
public void setRoomName(String roomName) {
this.roomName = roomName;
}
public boolean isSelected() {
return selected;
}
public void setSelected(boolean selected) {
this.selected = selected;
}
}
