我创建了一个应用程序，其中，我想显示在xml的帮助下预先检查的复选框，之后用户可以选中或取消选中该复选框，但是xaml未在设备的应用程序启动时显示已检查，问题是什么。请指教。
MainActivity
public class File_Selecter extends Activity implements OnItemClickListener {
EditText edDelimiter, edqualifier, edcolumn, edrow;
ListView list;
StringBuilder addition = new StringBuilder();
ArrayList<String> list1 = new ArrayList<String>();
ArrayList<String> list2 = new ArrayList<String>();
ArrayList<String> list3 = new ArrayList<String>();
ArrayList<String> phno0 = new ArrayList<String>();
private Button btnsave;
String str;
int t;
int count = 0;
String[] BreakData, roz;
TextView textnum;
static String fileinfo;
static StringBuilder conct = new StringBuilder();
static int ResultCode = 12;
String name = "", number = "";
MyAdapter ma;
String fin = "";
String[] cellArray;
String[] art = null;;
String pathname = Environment.getExternalStorageDirectory()
.getAbsolutePath();
static String contacts = "";
static String mixer;
static String delimiter, qulifier;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.add_file);
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
ColorDrawable colorDrawable = new ColorDrawable(
Color.parseColor("#00aef0"));
actionBar.setBackgroundDrawable(colorDrawable);
Intent itadd = new Intent();
// edittext name
// final String name=itadd.getStringExtra("name").toString();
textnum = (TextView) findViewById(R.id.textnum1);
list = (ListView) findViewById(R.id.listview);
ma = new MyAdapter();
list.setAdapter(ma);
// list.setOnItemClickListener(this);
// list.setItemsCanFocus(false);
// list.setTextFilterEnabled(true);
edDelimiter = (EditText) findViewById(R.id.edDelimiter);
edcolumn = (EditText) findViewById(R.id.edcoloumns);
edrow = (EditText) findViewById(R.id.edrow);
edqualifier = (EditText) findViewById(R.id.edqualifier);
// edittext number
// final String number=itadd.getStringExtra("number").toString();
edDelimiter.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
edDelimiter.setError(null);
}
});
if(fileinfo!=null){
//Toast.makeText(getApplication(),
//fileinfo.toString(), Toast.LENGTH_LONG)
//.show();
if (delimiter != null){
edDelimiter.setText( SmsSend
.delim1.toString());
qulifier= SmsSend
.qulifier.toString(); }
ToRead(fileinfo);
// contacts from smssend
contacts = SmsSend.contacts1;
if (SmsSend.contacts1 != null) {
cellArray = contacts.split(";");
if(list2.size() != 0){
for (int i = 0; i < cellArray.length; i++) {
for (int j = 0; j < list2.size(); j++) {
if (list2.get(j).contains(cellArray[i])) {
//ma.setChecked(j, true);
break;
}}}}
else{
for (int i = 0; i < cellArray.length; i++) {
for (int j = 0; j < list1.size(); j++) {
if (list1.get(j).contains(cellArray[i])) {
//ma.setChecked(j, true);
break;
}
}
}
}
}
}
// button1
btnsave = (Button) findViewById(R.id.btnsave);
btnsave.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if(edDelimiter.getText().toString().length()== 0){
edDelimiter.setError("Delimiter ir required");
}
if(File_Explorer.fileSizeInMB <= 1){
ToRead(fileinfo);
//finish();
}else{
Toast.makeText(getApplication(), "file size is too large", Toast.LENGTH_LONG).show();
}
}
});
}
public void ToRead(String fileinfo) {
if (fileinfo != null) {
delimiter = edDelimiter.getText().toString();
// Toast.makeText(getApplication(), delimiter, Toast.LENGTH_LONG).show();
//delim=":";
qulifier = edqualifier.getText().toString();
//Toast.makeText(getApplication(), qulifier.toString(), Toast.LENGTH_LONG).show();
// qulifier="\\";
// finish();
mixer = qulifier + delimiter;
BreakData = fileinfo.split(mixer);
str = edrow.getText().toString().trim();
try {
t = Integer.parseInt(str);
} catch (NumberFormatException nfe) {
// Handle parse error.
}
if (BreakData != null) {
// String t2= (String.valueOf(t));
if (File_Explorer.fileExtension.equals("vcf")) {
if (!(String.valueOf(t)).equals("0")) {
if (t > BreakData.length) {
Toast.makeText(getApplication(),
"Data is less then entered rows",
Toast.LENGTH_LONG).show();
Arrays.fill(BreakData, null);
Toast.makeText(getApplication(),
"empty.................", Toast.LENGTH_LONG)
.show();
} else {
for (int i = 0; i < BreakData.length; i++) {
if (BreakData[i].contains("FN")) {
art = BreakData[i + 1].split("\n");
name = art[0].toString();
} else if (BreakData[i].contains("TEL;CELL")) {
roz = BreakData[i + 1].split("\n");
number = roz[0].toString();
fin = name.toString() + "\n" + "\n"
+ number.toString();
list2.add(fin.toString());
}
}
for (int a = 0; a < list2.size() && a < t; a++) {
list1.add(list2.get(a).toString());
}
}
textnum.setText(Integer.toString(list1.size()));
}
else {
for (int i = 0; i < BreakData.length; i++) {
if (BreakData[i].contains("FN")) {
art = BreakData[i + 1].split("\n");
name = art[0].toString();
} else if (BreakData[i].contains("TEL;CELL")) {
roz = BreakData[i + 1].split("\n");
number = roz[0].toString();
fin = name.toString() + "\n" + "\n"
+ number.toString();
list1.add(fin.toString());
}
}
textnum.setText(Integer.toString(list1.size()));
}
} else {
if (!(String.valueOf(t)).equals("0")) {
if (t > BreakData.length) {
Toast.makeText(getApplication(),
"Data is less then entered rows",
Toast.LENGTH_LONG).show();
Arrays.fill(BreakData, null);
Toast.makeText(getApplication(),
"empty.................", Toast.LENGTH_LONG)
.show();
} else {
for (int i = 0; i < BreakData.length && i < t; i++) {
list1.add(BreakData[i].toString());
}
textnum.setText(Integer.toString(t));
}
}
else {
for (int i = 0; i < BreakData.length; i++) {
list1.add(BreakData[i].toString());
//t = i;
}
textnum.setText(Integer.toString(BreakData.length));
}
}
}
}
list.setAdapter(ma);
// fileinfo= null;
//edDelimiter.setText(null);
}
@Override
public void onBackPressed() {
// TODO Auto-generated method stub
StringBuilder checkedcontacts = new StringBuilder();
System.out.println(".............." + ma.mCheckStates.size());
for (int i = 0; i < list1.size(); i++)
{
if (ma.mCheckStates.get(i) == false) {
// Toast.makeText(getApplication(), "hiii",
// Toast.LENGTH_LONG).show();
StringTokenizer st1 = new StringTokenizer(list1.get(i)
.toString(), "\n");
String first = st1.nextToken();
String second = st1.nextToken();
phno0.add(second.toString());
checkedcontacts.append(list1.get(i).toString());
checkedcontacts.append("\n");
} else {
System.out.println("..Not Checked......"
+ list1.get(i).toString());
}
}
//Toast.makeText(getApplication(), phno0.toString(), Toast.LENGTH_LONG).show();
Intent returnIntent = new Intent();
returnIntent.putStringArrayListExtra("extermal_name", phno0);
setResult(RESULT_OK, returnIntent);
finish();
}
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
// TODO Auto-generated method stub
ma.toggle(arg2);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
getMenuInflater().inflate(R.menu.add_button, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case R.id.attachments:
fileinfo = null;
Intent i = new Intent(File_Selecter.this, File_Explorer.class);
startActivityForResult(i, ResultCode);
break;
case android.R.id.home:
// app icon in action bar clicked; go home
StringBuilder checkedcontacts = new StringBuilder();
System.out.println(".............." + ma.mCheckStates.size());
for (int j = 0; j < list1.size(); j++)
{
if (ma.mCheckStates.get(j) == true) {
StringTokenizer st1 = new StringTokenizer(list1.get(j)
.toString(), "\n");
String first = st1.nextToken();
String second = st1.nextToken();
phno0.add(second.toString());
checkedcontacts.append(list1.get(j).toString());
checkedcontacts.append("\n");
} else {
System.out.println("..Not Checked......"
+ list1.get(j).toString());
}
}
Intent returnIntent = new Intent();
returnIntent.putStringArrayListExtra("extermal_name", phno0);
setResult(RESULT_OK, returnIntent);
finish();
break;
}
return super.onOptionsItemSelected(item);
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == ResultCode) {
if (resultCode == RESULT_OK) {
fileinfo = data.getStringExtra("name");
}
// list.setAdapter(ma);
}
if (resultCode == RESULT_CANCELED) {
}
}
AdapterCLass
class MyAdapter extends BaseAdapter implements
CompoundButton.OnCheckedChangeListener {
public SparseBooleanArray mCheckStates;
LayoutInflater mInflater;
TextView tv1, tv;
CheckBox cb;
MyAdapter() {
mCheckStates = new SparseBooleanArray(list1.size());
mInflater = (LayoutInflater) File_Selecter.this
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
// Save ListView state
@Override
public int getCount() {
// TODO Auto-generated method stub
return list1.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);
tv = (TextView) vi.findViewById(R.id.textView1);
// tv1 = (TextView) vi.findViewById(R.id.textView2);
cb = (CheckBox) vi.findViewById(R.id.checkBox1);
tv.setText(list1.get(position));
// tv1.setText(phno1.get(position));
cb.setTag(position);
//cb.setChecked(mCheckStates.get(position, true));
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);
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);
}
}
}
row.layout
<?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:ems="20"
android:text="TextView"
android:textColor="#0082e6" />
<CheckBox
android:id="@+id/checkBox1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:checked="true"
android:layout_marginBottom="5dp"
android:layout_marginRight="22dp"
android:layout_marginTop="5dp" />
</RelativeLayout>