详解Dialog(二)——有关列表的构建

 

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.TextView;

import com.blankj.utilcode.util.ActivityUtils;
import com.hebccc.clustercom.R;
import com.hebccc.clustercom.type.CallStatusEvent;

import java.util.ArrayList;
import java.util.List;

public class TestAdap extends BaseAdapter {

    private List<CallStatusEvent> datas;

    public TestAdap() {
        datas = new ArrayList<>();
//        this.datas = datas;
    }

    public void setDatas(List<CallStatusEvent> datas) {
        this.datas = datas;
    }

    @Override
    public int getCount() {
        return datas == null ? 0 : datas.size();
    }

    @Override
    public CallStatusEvent getItem(int position) {
        return datas.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        MHolder mHolder;
        if (convertView == null) {
            convertView = LayoutInflater.from(ActivityUtils.getTopActivity()).inflate(R.layout.view_test_lv_item, null);
            mHolder = new MHolder(convertView);
            convertView.setTag(mHolder);
        } else {
            mHolder = (MHolder) convertView.getTag();
        }
        mHolder.item.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                checkItem(position);
            }
        });
        mHolder.rb.setChecked(datas.get(position).isCheck());
        mHolder.tv.setText(datas.get(position).getRemoteUdn());
//        mHolder.cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
//            @Override
//            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
//                if (isChecked) {
//                    for (int i = 0; i < datas.size(); i++) {
//                        datas.get(i).setCheck(i == position);
//                    }
//                }
//            }
//        });
        return convertView;
    }

    public void checkItem(int which) {
        if (datas != null) {
            for (int i = 0; i < datas.size(); i++) {
                datas.get(i).setCheck(i == which);
            }
            notifyDataSetChanged();
        }
    }

    public CallStatusEvent getCheckedItem() {
        if (datas != null && datas.size() > 0) {
            for (int i = 0; i < datas.size(); i++) {
                if (datas.get(i).isCheck()) {
                    return datas.get(i);
                }
            }
            return datas.get(0);
        }
        return null;
    }

    public void removeItem(int which) {
        if (datas != null) {
            datas.remove(which);
            notifyDataSetChanged();
        }
    }

    private static class MHolder {
        RadioButton rb;
        TextView tv;
        private final LinearLayout item;

        public MHolder(View convertView) {
            item = convertView.findViewById(R.id.test_lv_item);
            rb = convertView.findViewById(R.id.test_lv_item_rb);
            tv = convertView.findViewById(R.id.test_lv_item_tv_name);
        }
    }
}

view_test_lv_item

<?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/test_lv_item"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:gravity="center_vertical"
    tools:context=".ui.acty.TestActivity">

    <RadioButton
        android:id="@+id/test_lv_item_rb"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="15dp"
        android:background="#00FFFFFF"
        android:buttonTint="#0090a8"
        android:clickable="false" />

    <TextView
        android:id="@+id/test_lv_item_tv_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="10dp"
        android:textColor="@color/black"
        android:textSize="25sp"
        tools:text="222222222222222222222" />
</LinearLayout>

private void m2() {
       
        TestAdap testAdap = new TestAdap();
        List<CallStatusEvent> datas = new ArrayList<>();
        for (int i = 0; i < 5; i++) {
            CallStatusEvent callStatusEvent = new CallStatusEvent();
            callStatusEvent.setRemoteUdn("====" + i);
            callStatusEvent.setCheck(i == 0);
            datas.add(callStatusEvent);
        }
        testAdap.setDatas(datas);
        new AlertDialog.Builder(this).setAdapter(testAdap, null)
                .setNegativeButton("是", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        MsgUtils.show("----=--=");
                    }
                }).setPositiveButton("否", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                MsgUtils.show("32432432");
            }
        }).create().show();
    }

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