任何人都可以告诉我如何在自定义视图列表中获取已检查行的值？例如,我的代码有一个自定义视图列表,其中包含两个文本视图和一个复选框每当用户检查一行并点击提交按钮时,我需要检索两个textview中的信息.
代码是
public class contacts extends Activity implements OnItemClickListener {
static final String TAG = "contacts";
ArrayList<String> contactName = new ArrayList<String>();
ArrayList<String> contactNumber = new ArrayList<String>();
MyAdapter myAdapter;
Button AddNumber;
String numberIntent;
View vi;
ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.listview);
getAllContacts(this.getContentResolver());
listView = (ListView) findViewById(R.id.lists);
myAdapter = new MyAdapter();
listView.setAdapter(myAdapter);
listView.setItemsCanFocus(false);
listView.setTextFilterEnabled(true);
// adding
AddNumber = (Button) findViewById(R.id.AddNumbers);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
Object listItem = listView.getItemAtPosition(0);
Log.d(TAG,"listView listener" + listItem);
}
});
AddNumber.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
StringBuilder checkedContacts = new StringBuilder();
Log.d(TAG, "onClick" + myAdapter.mCheckStates.size());
for (int i = 0; i < contactName.size(); i++)
{
if (myAdapter.mCheckStates.get(i) == true) {
checkedContacts.append(contactName.get(i).toString());
checkedContacts.append("\n");
} else {
Log.d(TAG, "No OnClick" + contactName.get(i).toString());
}
}
Toast.makeText(contacts.this, checkedContacts,
Toast.LENGTH_LONG).show();
ArrayList<String> checkboxArray = new ArrayList<String>();
myAdapter.mCheckStates = listView.getCheckedItemPositions();
Log.d(TAG, "Sparse" + myAdapter.mCheckStates);
for (int i = 0; i < myAdapter.mCheckStates.size(); i++) {
int position = myAdapter.mCheckStates.keyAt(i);
boolean bool = myAdapter.mCheckStates.valueAt(position);
Log.d(TAG, "Sparse2" + myAdapter.mCheckStates);
}
String[] outputStrArr = new String[checkboxArray.size()];
for (int i = 0; i < checkboxArray.size(); i++) {
outputStrArr[i] = checkboxArray.get(i);
}
}
});
}
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
myAdapter.toggle(arg2);
}
public void getAllContacts(ContentResolver cr) {
Cursor cursor = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null,
null, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME
+ " COLLATE LOCALIZED ASC");
while (cursor.moveToNext()) {
String name = cursor
.getString(cursor
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
String phoneNumber = cursor
.getString(cursor
.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
Log.d(TAG, "getAllContacts" + phoneNumber);
contactName.add(name);
contactNumber.add(phoneNumber);
}
cursor.close();
Intent in = new Intent(this, TrackLogic.class);
in.putExtra("contact", contactName.toArray());
Log.d(TAG, "Intent????" + contactName);
in.putExtra("contact1", contactNumber.toArray());
}
class MyAdapter extends BaseAdapter implements
CompoundButton.OnCheckedChangeListener {
private SparseBooleanArray mCheckStates;
LayoutInflater mInflater;
TextView phoneView, contactView;
CheckBox checkBox;
MyAdapter() {
mCheckStates = new SparseBooleanArray(contactName.size());
mInflater = (LayoutInflater) contacts.this
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
return contactName.size();
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(final int position, View convertView,
ViewGroup parent) {
vi = convertView;
if (convertView == null)
vi = mInflater.inflate(R.layout.row, null);
contactView = (TextView) vi.findViewById(R.id.contact_name);
phoneView = (TextView) vi.findViewById(R.id.phone_number);
checkBox = (CheckBox) vi.findViewById(R.id.checkBox_id);
contactView.setText(contactName.get(position));
phoneView.setText(contactNumber.get(position));
checkBox.setTag(position);
checkBox.setChecked(mCheckStates.get(position, false));
checkBox.setOnCheckedChangeListener(this);
return vi;
}
public boolean isChecked(int position) {
return mCheckStates.get(position, false);
}
public void setChecked(int position, boolean isChecked) {
mCheckStates.put(position, isChecked);
Log.d(TAG, "setChecked");
notifyDataSetChanged();
}
public void toggle(int position) {
setChecked(position, !isChecked(position));
}
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
mCheckStates.put((Integer) buttonView.getTag(), isChecked);
}
}
}
我似乎无法弄明白,现在它真正消耗在我身上.任何帮助都非常感谢..
谢谢.
解决方法:
https://groups.google.com/forum/?fromgroups#!topic/android-developers/No0LrgJ6q2M
您的自定义适配器必须实现CompoundButton.OnCheckedChangeListener.使用SparseBooleanArray获取列表中的选中项.
然后
cb.setChecked(mCheckStates.get(position, false));
cb.setOnCheckedChangeListener(this);
然后使用选中状态将文本设置为复选框
public boolean isChecked(int position) {
return mCheckStates.get(position, false);
}
public void setChecked(int position, boolean isChecked) {
mCheckStates.put(position, isChecked);
}
public void toggle(int position) {
setChecked(position, !isChecked(position));
}
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub
if(isChecked)
{
buttonView.setText("Hello");
}
else
{
buttonView.setText("");
}
mCheckStates.put((Integer) buttonView.getTag(), isChecked);
}
示例：
public class MainActivity extends Activity implements OnItemClickListener{
List<String> name1 = new ArrayList<String>();
List<String> phno1 = new ArrayList<String>();
MyAdapter ma ;
Button select
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
getAllCallLogs(this.getContentResolver());
ListView lv= (ListView) findViewById(R.id.lv);
ma = new MyAdapter();
lv.setAdapter(ma);
lv.setOnItemClickListener(this);
lv.setItemsCanFocus(false);
lv.setTextFilterEnabled(true);
// adding
select = (Button) findViewById(R.id.button1);
select.setOnClickListener(new OnClickListener()
{
@Override
public void onClick(View v) {
StringBuilder checkedcontacts= new StringBuilder();
System.out.println(".............."+ma.mCheckStates.size());
for(int i = 0; i < name1.size(); i++)
{
if(ma.mCheckStates.get(i)==true)
{
checkedcontacts.append(name1.get(i).toString());
checkedcontacts.append("\n");
}
else
{
System.out.println("..Not Checked......"+name1.get(i).toString());
}
}
Toast.MakeText(MainActivity.this,checkedcontacts,1000).show();
}
});
}
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
// TODO Auto-generated method stub
ma.toggle(arg2);
}
public void getAllCallLogs(ContentResolver cr) {
Cursor phones = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null,null, null);
while (phones.moveToNext())
{
String name=phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
String phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
System.out.println(".................."+phoneNumber);
name1.add(name);
phno1.add(phoneNumber);
}
phones.close();
}
class MyAdapter extends BaseAdapter implements CompoundButton.OnCheckedChangeListener
{ private SparseBooleanArray mCheckStates;
LayoutInflater mInflater;
TextView tv1,tv;
CheckBox cb;
MyAdapter()
{
mCheckStates = new SparseBooleanArray(name1.size());
mInflater = (LayoutInflater)MainActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return name1.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View vi=convertView;
if(convertView==null)
vi = mInflater.inflate(R.layout.row, null);
TextView tv= (TextView) vi.findViewById(R.id.textView1);
tv1= (TextView) vi.findViewById(R.id.textView2);
cb = (CheckBox) vi.findViewById(R.id.checkBox1);
tv.setText("Name :"+ name1.get(position));
tv1.setText("Phone No :"+ phno1.get(position));
cb.setTag(position);
cb.setChecked(mCheckStates.get(position, false));
cb.setOnCheckedChangeListener(this);
return vi;
}
public boolean isChecked(int position) {
return mCheckStates.get(position, false);
}
public void setChecked(int position, boolean isChecked) {
mCheckStates.put(position, isChecked);
System.out.println("hello...........");
notifyDataSetChanged();
}
public void toggle(int position) {
setChecked(position, !isChecked(position));
}
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
// TODO Auto-generated method stub
mCheckStates.put((Integer) buttonView.getTag(), isChecked);
}
}
}
activity_main.xml中
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<ListView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="@+id/button1"
android:id="@+id/lv"/>
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="Select" />
</RelativeLayout>
row.xml
<?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="match_parent" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="15dp"
android:layout_marginTop="34dp"
android:text="TextView" />
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/checkBox1"
android:layout_alignLeft="@+id/textView1"
android:text="TextView" />
<CheckBox
android:id="@+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="@+id/textView1"
android:layout_marginRight="22dp"
android:layout_marginTop="23dp" />
</RelativeLayout>
您可以勾选复选框并单击底部的按钮,选中的项目将以祝酒方式显示.
根据您的要求修改上述内容.