列表包含checkBox错位以及选中事件

效果图：



列表项使用了ExpandableTextView，在上一篇博客中提到了用法和使用中遇到的坑：使用ExpandableTextView遇到的坑，在列表中，包含了checkBox，比较容易出现的问题就是在列表中，选中项会错位，原因参照资料：Android ListView CheckBox状态错乱。我在程序中使用了Map来保存是否选中的状态，第二个问题就是点击事件，如果写在setOnCheckedChangeListener中处理，每次滑动时，就会调用，理论上应该是点击的时候再进行操作，所以把处理逻辑写在了setOnClickListener里，错误代码：

viewHolder2.checkBoxSignService.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
isChecks.put(position,isChecked);
if(isChecked){
totalPrice += priceList.get(position);
checkCount++;
}else{
totalPrice -= priceList.get(position);
checkCount--;
}

tvNotice.setText("您总共选择"+checkCount+"项服务，总价共"+totalPrice+"元/年");
}
});

正确的代码：

Activity代码：

public class SignServiceActivity extends BaseCompatActivity {

@BindView(R.id.tv_sure)
TextView tvSure;
@BindView(R.id.toolbar)
Toolbar toolbar;
@BindView(R.id.lv_signservice)
ListView lvSignservice;
@BindView(R.id.tv_notice)
TextView tvNotice;
@BindView(R.id.activity_sign_service)
LinearLayout activitySignService;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sign_service);
ButterKnife.bind(this);

toolbar.setNavigationIcon(R.mipmap.ic_navigation);
toolbar.setTitle(R.string.health_data);
toolbar.setTitleTextAppearance(this, R.style.Theme_ToolBar_Base_Title);//修改主标题的外观，包括文字颜色，文字大小等
toolbar.setNavigationOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View view)
{
SignServiceActivity.this.finish();
}
});

tvNotice.setText("您总共选择0项服务，总价共0元/年");

lvSignservice.setAdapter(new SingServiceAdapter(SignServiceActivity.this));
}

private class SingServiceAdapter extends BaseAdapter{

Context mContext;
LayoutInflater inflater;
private final SparseBooleanArray mCollapsedStatus;
final int TYPE_1 = 0;
final int TYPE_2 = 1;
private final String[] sampleStrings;
//标记checkBox是否选中
private final Map<Integer,Boolean> isChecks = new HashMap<>();
//测试价格
private ArrayList<Double> priceList = new ArrayList<>();
//计算总价格
private Double totalPrice = 0.0;
//选择几项
private int checkCount = 0;
//各个布局的控件资源
class ViewHolder1 {
TextView textViewTitle;
}

class ViewHolder2 {
CheckBox checkBoxSignService;
ExpandableTextView expandableTextView;
TextView textViewPrice;

}

public SingServiceAdapter(Context mContext) {
this.mContext = mContext;
inflater = LayoutInflater.from(mContext);
mCollapsedStatus = new SparseBooleanArray();
sampleStrings = mContext.getResources().getStringArray(R.array.sampleStrings);

for (int i = 0;i < sampleStrings.length;i++){
isChecks.put(i,false);
priceList.add(i*1.0);
}
}

@Override
public int getCount() {
return sampleStrings.length;
}

@Override
public Object getItem(int position) {
return null;
}

@Override
public long getItemId(int position) {
return 0;
}

@Override
public View getView(final int position, View convertView, ViewGroup parent) {
int type = getItemViewType(position);
ViewHolder1 viewHolder1 = null;
ViewHolder2 viewHolder2 = null;
if (convertView == null) {
if (type == TYPE_1) {
convertView = LayoutInflater.from(mContext).inflate(R.layout.signservice_item1, null);
viewHolder1 = new ViewHolder1();
viewHolder1 .textViewTitle = (TextView) convertView.findViewById(R.id.tv_title);
convertView.setTag(viewHolder1);
} else if (type == TYPE_2) {
viewHolder2 = new ViewHolder2();
convertView = LayoutInflater.from(mContext).inflate(R.layout.signservice_item2, null);
viewHolder2.checkBoxSignService = (CheckBox) convertView.findViewById(R.id.cb_signService);
viewHolder2.expandableTextView = (ExpandableTextView) convertView.findViewById(R.id.expand_text_view);
viewHolder2.textViewPrice = (TextView) convertView.findViewById(R.id.tv_price);
convertView.setTag(viewHolder2);
}
} else {
if (type == TYPE_1) {
viewHolder1 = (ViewHolder1) convertView.getTag();
} else if (type == TYPE_2) {
viewHolder2 = (ViewHolder2) convertView.getTag();
}
}

if (type == TYPE_1) {
if(position==0){
viewHolder1.textViewTitle.setText("高血压");
}else if(position==4){
viewHolder1.textViewTitle.setText("糖尿病");
}

}
if (type == TYPE_2) {
viewHolder2.expandableTextView.setText(sampleStrings[position], mCollapsedStatus, position);
viewHolder2.textViewPrice.setText("费用\n"+priceList.get(position)+"元/每年");

final ViewHolder2 finalViewHolder = viewHolder2;
viewHolder2.checkBoxSignService.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
boolean isChecked = finalViewHolder.checkBoxSignService.isChecked();

isChecks.put(position,isChecked);
if(isChecked){
totalPrice += priceList.get(position);
checkCount++;
}else{
totalPrice -= priceList.get(position);
checkCount--;
}

tvNotice.setText("您总共选择"+checkCount+"项服务，总价共"+totalPrice+"元/年");

}
});

viewHolder2.checkBoxSignService.setChecked(isChecks.get(position));

}

return convertView;
}

@Override
public int getViewTypeCount() {
return 2;
}

@Override
public int getItemViewType(int position) {
if (position == 0 || position == 4) {
return TYPE_1;
} else {
return TYPE_2;
}
}
}
}

列表项布局文件：

signservice_item1.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:background="@color/paleTurquoise3"
android:orientation="vertical"
android:padding="5dp">

<TextView
android:id="@+id/tv_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@color/black"
android:textSize="16sp"
android:text="测试"/>
</LinearLayout>

signservice_item2.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:expandableTextView="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">

<CheckBox
android:id="@+id/cb_signService"
android:layout_width="30dp"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_margin="5dp" />

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="40dp"
android:layout_marginRight="85dp"
android:orientation="vertical">

<com.ms.square.android.expandabletextview.ExpandableTextView
android:id="@+id/expand_text_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
expandableTextView:animAlphaStart="1"
expandableTextView:maxCollapsedLines="4">

<TextView
android:id="@id/expandable_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:textColor="#666666"
android:textSize="16sp" />

<ImageButton
android:id="@id/expand_collapse"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right|bottom"
android:background="@android:color/transparent"
android:padding="16dp" />
</com.ms.square.android.expandabletextview.ExpandableTextView>
</LinearLayout>

<TextView
android:id="@+id/tv_price"
android:layout_width="70dp"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_margin="10dp"
android:gravity="center"
android:fontFamily="sans-serif-light"
android:textColor="#666666"
android:textSize="16sp" />
</RelativeLayout>