I have make used of shared preference to store my data into MyUserChoice.xml:
<string name="MyUserChoice">ApplicationInfo{1ebad2cb com.example.user.example},
ApplicationInfo{15c7caa8 com.android.gallery},
ApplicationInfo{bc0a9c1 com.android.quicksearchbox}</string>
I have tried to retrieve the 3 string above.
for (int i = 0; i < count; i++) {
String currentItem = (String) myList.getAdapter()
.getItem(i);
if (selectedItems.contains(currentItem)) {
myList.setItemChecked(i, true);
Toast.makeText(getApplicationContext(),
"Current Item: " + currentItem,
Toast.LENGTH_LONG).show();
} else {
myList.setItemChecked(i, false);
}
}
What I want to achieve is that upon I relaunch my app, it should display each of this string one after another.
Current Item: ApplicationInfo{1ebad2cb com.example.user.example},
Current Item: ApplicationInfo{15c7caa8 com.android.gallery},
Current Item: ApplicationInfo{bc0a9c1 com.android.quicksearchbox}
Instead, it returns nothing and I saw this in my logcat:
10-09 01:19:18.756 1311-1311/com.android.systemui W/ResourceType﹕ No package identifier when getting value for resource number 0x00000000
10-09 01:19:18.756 1311-1311/com.android.systemui W/PackageManager﹕ Failure retrieving resources for com.example.checkboxsharedpreferences: Resource ID #0x0
10-09 01:19:18.781 1311-1327/com.android.systemui I/art﹕ Background sticky concurrent mark sweep GC freed 10643(410KB) AllocSpace objects, 0(0B) LOS objects, 0% free, 22MB/22MB, paused 5.699ms total 16.577ms
10-09 01:19:19.371 931-931/? W/SurfaceFlinger﹕ couldn't log to binary event log: overflow.
Anyone knows what's wrong with my coding? Hereby attached is my MainActivity.java:
ListView myList;
Button getChoice, clearAll, selectAll;
SharedPreferences sharedpreferences;
public static final String MyPREFERENCES = "MyUserChoice" ;
ArrayList<String> selectedItems = new ArrayList<String>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myList = (ListView)findViewById(android.R.id.list);
getChoice = (Button)findViewById(R.id.getchoice);
clearAll = (Button)findViewById(R.id.clearall);
selectAll = (Button)findViewById(R.id.selectall);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_multiple_choice);
myList.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
myList.setAdapter(adapter);
sharedpreferences = getSharedPreferences(MyPREFERENCES, Context.MODE_PRIVATE);
if(sharedpreferences.contains(MyPREFERENCES)){
LoadSelections();
}
getChoice.setOnClickListener(new Button.OnClickListener() {
#Override
public void onClick(View v) {
String selected = "";
int cntChoice = myList.getCount();
SparseBooleanArray sparseBooleanArray = myList.getCheckedItemPositions();
for (int i = 0; i < cntChoice; i++) {
if (sparseBooleanArray.get(i)) {
selected += myList.getItemAtPosition(i).toString() + "\n";
System.out.println("Checking list while adding:" + myList.getItemAtPosition(i).toString());
SaveSelections();
}
}
Toast.makeText(MainActivity.this, selected, Toast.LENGTH_LONG).show();
}
});
clearAll.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
ClearSelections();
}
});
selectAll.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
SelectAllSelections();
}
});
packageManager = getPackageManager();
new LoadApplications().execute();
}
private void SaveSelections() {
// save the selections in the shared preference in private mode for the user
SharedPreferences.Editor prefEditor = sharedpreferences.edit();
String savedItems = getSavedItems();
prefEditor.putString(MyPREFERENCES.toString(), savedItems);
prefEditor.commit();
}
private String getSavedItems() {
String savedItems = "";
int count = this.myList.getAdapter().getCount();
for (int i = 0; i < count; i++) {
if (this.myList.isItemChecked(i)) {
if (savedItems.length() > 0) {
savedItems += "," + this.myList.getItemAtPosition(i);
} else {
savedItems += this.myList.getItemAtPosition(i);
}
}
}
return savedItems;
}
private void LoadSelections() {
// if the selections were previously saved load them
if (sharedpreferences.contains(MyPREFERENCES.toString())) {
String savedItems = sharedpreferences.getString(MyPREFERENCES.toString(), "");
selectedItems.addAll(Arrays.asList(savedItems.split(",")));
int count = this.myList.getAdapter().getCount();
for (int i = 0; i < count; i++) {
String currentItem = (String) myList.getAdapter()
.getItem(i);
if (selectedItems.contains(currentItem)) {
myList.setItemChecked(i, true);
Toast.makeText(getApplicationContext(),
"Current Item: " + currentItem,
Toast.LENGTH_LONG).show();
} else {
myList.setItemChecked(i, false);
}
}
}
}
private void ClearSelections() {
// user has clicked clear button so uncheck all the items
int count = this.myList.getAdapter().getCount();
for (int i = 0; i < count; i++) {
this.myList.setItemChecked(i, false);
}
// also clear the saved selections
SaveSelections();
}
private void SelectAllSelections() {
// user has clicked clear button so uncheck all the items
int count = this.myList.getAdapter().getCount();
for (int i = 0; i < count; i++) {
this.myList.setItemChecked(i, true);
}
// also clear the saved selections then uncomment the below line.
// SaveSelections();
}
protected void onListItemClick(ListView l, View v, int position, long id){
super.onListItemClick(l, v, position, id);
ApplicationInfo app = applist.get(position);
try{
Intent intent = packageManager.getLaunchIntentForPackage(app.packageName);
/*if(intent != null){
startActivity(intent);
}*/
}catch(ActivityNotFoundException e){
Toast.makeText(MainActivity.this,e.getMessage(), Toast.LENGTH_LONG).show();
}catch(Exception e){
Toast.makeText(MainActivity.this,e.getMessage(), Toast.LENGTH_LONG).show();
}
}
private List<ApplicationInfo> checkForLaunchIntent(List<ApplicationInfo> list){
ArrayList<ApplicationInfo> appList = new ArrayList<ApplicationInfo>();
for(ApplicationInfo info : list){
try{
if(packageManager.getLaunchIntentForPackage(info.packageName)!=null){
appList.add(info);
}
}catch(Exception e){
e.printStackTrace();
}
}
return appList;
}
private class LoadApplications extends AsyncTask<Void, Void, Void>{
private ProgressDialog progress = null;
protected Void doInBackground(Void... params){
applist = checkForLaunchIntent(packageManager.getInstalledApplications(PackageManager.GET_META_DATA));
listadapter = new AppAdapter(MainActivity.this, R.layout.activity_list_app, applist);
return null;
}
protected void onPostExecute(Void result){
setListAdapter(listadapter);
progress.dismiss();
super.onPostExecute(result);
}
protected void onPreExecute(){
progress = ProgressDialog.show(MainActivity.this, null, "Loading apps info...");
super.onPreExecute();
}
}
}
Change MyPREFERENCES.toString() to MyPREFERENCES.It is already String.No need to use .toString();
SharedPreferences.Editor prefEditor = sharedpreferences.edit();
String savedItems = getSavedItems();
prefEditor.putString(MyPREFERENCES, savedItems);
prefEditor.commit();
Retrieving data from SharedPreferences:
SharedPreferences sharedpreferences= getSharedPreferences(PREF_NAME, MODE_PRIVATE);
String channel = sharedpreferences.getString(MyPREFERENCES, "null");
this
sharedpreferences.contains(MyPREFERENCES.toString())
isn't returning something usefull.
replace it with that
!sharedpreferences.getString(MyPREFERENCES, "").equals("")
Related
I am implementing favorite button in ListView trying from the last five days. I have created a ListView which gets the current textview text and saves it in the ArrayList (names) and if the data is already present then deletes it, works perfectly but when I close the app the ArrayList gets empty i wants to save the array list in preferences.
array declaration:
ArrayList<String> names = new ArrayList<>();
Below is the code
favoritebutton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick( View v) {
if (!names.contains(textView_name.getText())){
names.add((String) textView_name.getText());
for (int i=0; i<names.size(); i++) {
System.out.println(names.get(i));
favoritebutton.setBackgroundResource(R.drawable.fav_checked);
}
}
else {
System.out.println(textView_name.getText() + " is already present in the Array at index " + names.indexOf(textView_name.getText()));
int currentIndex = names.indexOf(textView_name.getText());
names.remove(currentIndex);
for (int i=0; i<names.size(); i++) {
System.out.println(names.get(i));
favoritebutton.setBackgroundResource(R.drawable.star_off);
}
}
}
});
You can use SharedPreferences to retrieve and store data like below:
private ArrayList<String> names;
private SharedPreferences sharedPreferences;
sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
String favoriteItems = sharedPreferences.getString("FAVORITE_ITEMS", "");
if(favoriteItems.isEmpty())
names = new ArrayList<>();
else
names = new ArrayList<>(Arrays.asList(favoriteItems.split(",")); //Update like this
favoritebutton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick( View v) {
if (!names.contains(textView_name.getText())){
names.add((String) textView_name.getText());
for (int i=0; i<names.size(); i++) {
System.out.println(names.get(i));
favoritebutton.setBackgroundResource(R.drawable.fav_checked);
}
}
else {
System.out.println(textView_name.getText() + " is already present in the Array at index " + names.indexOf(textView_name.getText()));
int currentIndex = names.indexOf(textView_name.getText());
names.remove(currentIndex);
for (int i=0; i<names.size(); i++) {
System.out.println(names.get(i));
favoritebutton.setBackgroundResource(R.drawable.star_off);
}
}
sharedPreferences.edit().putString("FAVORITE_ITEMS", TextUtils.join(",", names)).apply();
}
});
You will have to save that list in preferences after each update you can use Gson lib for that which convert array list to JsonArray and JsonArray to Arraylist which will help to you...
String str = fetchFromPref();
ArrayList<String> names = covertToArrayListFromJSOnString(str);
favoritebutton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick( View v) {
if (!names.contains(textView_name.getText())){
names.add((String) textView_name.getText());
for (int i=0; i<names.size(); i++) {
System.out.println(names.get(i));
favoritebutton.setBackgroundResource(R.drawable.fav_checked);
}
}
else {
System.out.println(textView_name.getText() + " is already present in the Array at index " + names.indexOf(textView_name.getText()));
int currentIndex = names.indexOf(textView_name.getText());
names.remove(currentIndex);
for (int i=0; i<names.size(); i++) {
System.out.println(names.get(i));
favoritebutton.setBackgroundResource(R.drawable.star_off);
}
}
String str = convertArrayListToJson(names).toString();
saveToPrefrences(str);
}
});
I am currently creating a new project that involves a checkbox for a list of items contained in an array.xml. I am using shared preferences and want to be able to pull up the checked items in another activity. I have a button that saves the selections and opens a new activity. Now I am just having trouble having it appear in second activity. I will show my code for my main activity as I am not sure how to begin on the second activity.
#Override
public void onClick(View v) {
String selected = "";
int cntChoice = myList.getCount();
SparseBooleanArray sparseBooleanArray = myList.getCheckedItemPositions();
for(int i = 0; i < cntChoice; i++){
if(sparseBooleanArray.get(i)) {
selected += myList.getItemAtPosition(i).toString() + "\n";
System.out.println("Checking list while adding:" + myList.getItemAtPosition(i).toString());
SaveSelections();
Intent learnintent = new
Intent(MainActivity.this,UserList.class);
learnintent.putExtra("",selected);
Toast.makeText(MainActivity.this, selected,
Toast.LENGTH_LONG).show();
startActivity(learnintent);
}
}
Toast.makeText(MainActivity.this, selected,
Toast.LENGTH_LONG).show();
}});
clearAll.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
ClearSelections();
}
});
}
private void SaveSelections() {
// save the selections in the shared preference in private mode for the user
SharedPreferences.Editor prefEditor = sharedpreferences.edit();
String savedItems = getSavedItems();
prefEditor.putString(MyPREFERENCES.toString(), savedItems);
prefEditor.commit();
}
private String getSavedItems() {
String savedItems = "";
int count = this.myList.getAdapter().getCount();
for (int i = 0; i < count; i++) {
if (this.myList.isItemChecked(i)) {
if (savedItems.length() > 0) {
savedItems += "," + this.myList.getItemAtPosition(i);
} else {
savedItems += this.myList.getItemAtPosition(i);
}
}
}
return savedItems;
}
private void LoadSelections() {
// if the selections were previously saved load them
if (sharedpreferences.contains(MyPREFERENCES.toString())) {
String savedItems = sharedpreferences.getString(MyPREFERENCES.toString(), "");
selectedItems.addAll(Arrays.asList(savedItems.split(",")));
int count = this.myList.getAdapter().getCount();
for (int i = 0; i < count; i++) {
String currentItem = (String) myList.getAdapter().getItem(i);
if (selectedItems.contains(currentItem)) {
myList.setItemChecked(i, true);
Toast.makeText(getApplicationContext(), "Curren Item: " + currentItem,Toast.LENGTH_LONG).show();
} else {
myList.setItemChecked(i, false);
}
}
}
}
private void ClearSelections() {
// user has clicked clear button so uncheck all the items
int count = this.myList.getAdapter().getCount();
for (int i = 0; i < count; i++) {
this.myList.setItemChecked(i, false);
}
// also clear the saved selections
SaveSelections();
}
#KeithB
I written Singleton Shared Preferences class. it may be useful for you
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
public class SharedPref
{
private static SharedPreferences mSharedPref;
public static final String NAME = "NAME";
public static final String AGE = "AGE";
public static final String IS_SELECT = "IS_SELECT";
public static void init(Context context)
{
if(mSharedPref == null)
mSharedPref = context.getSharedPreferences(context.getPackageName(), Activity.MODE_PRIVATE);
}
public static String read(String key, String defValue) {
return mSharedPref.getString(key, defValue);
}
public static void write(String key, String value) {
SharedPreferences.Editor prefsEditor = mSharedPref.edit();
prefsEditor.putString(key, value);
prefsEditor.commit();
}
public static boolean read(String key, boolean defValue) {
return mSharedPref.getBoolean(key, defValue);
}
public static void write(String key, boolean value) {
SharedPreferences.Editor prefsEditor = mSharedPref.edit();
prefsEditor.putBoolean(key, value);
prefsEditor.commit();
}
public static Integer read(String key, int defValue) {
return mSharedPref.getInt(key, defValue);
}
public static void write(String key, Integer value) {
SharedPreferences.Editor prefsEditor = mSharedPref.edit();
prefsEditor.putInt(key, value).commit();
}
}
for more info see the link SharedPref Sample
I am not able to get edittext value from dynamic listview. When I am scrolling listview, entered values in edit text is going invisible
Below is My Activity file -
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.content_servic_homepage);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
url = getResources().getString(R.string.webservice);
aq = new AQuery(ServicHomepage.this);
cd = new ConnectionDetector(ServicHomepage.this);
findviewbyId();
progressdialog();
if (cd.isConnectingToInternet()) {
getintentData();
} else {
Toast.makeText(ServicHomepage.this, "CheckIternet connection", Toast.LENGTH_SHORT).show();
}
}
private void progressdialog() {
pd = new ProgressDialog(ServicHomepage.this);
pd.setMessage("Loading...");
}
public void findviewbyId() {
recyclerview = (ListView) findViewById(R.id.service_recycler_view);
update_descrptn = (TextView) findViewById(R.id.update_descrptn);
uploadimages = (TextView) findViewById(R.id.uploadimages);
}
public void getintentData() {
SharedPreferences prefs = getSharedPreferences(Constants.PREFS_NAME, 0);
catid = prefs.getString(Constants.CATID, "");
subcatid = prefs.getString(Constants.SUBCATID, "");
user_id = prefs.getString(Constants.USERID, "");
isappointment = prefs.getString(Constants.IS_APPOINTMENT, "");
clicklistener();
}
public void clicklistener() {
uploadimages.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(getApplicationContext(), GalleryAlbumActivity.class);
startActivity(i);
}
});
update_descrptn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(ServicHomepage.this, "" + serv_adapter.getItem(POSITION), Toast.LENGTH_SHORT).show();
for (int i = 0; i < serv_adapter.getCount(); i++) {
View view = serv_adapter.getView(i,null,null);
EditText edittext = (EditText)view.findViewById(R.id.et_amount);
EditText et_description = (EditText)view.findViewById(R.id.et_description);
String str = edittext.getText().toString();
String str1 = et_description.getText().toString();
Toast.makeText(ServicHomepage.this, str + "==" + str1, Toast.LENGTH_SHORT).show();
}
updateList();
}
});
}
private void updateList() {
String substring = null, msgString = "";
String MAIN_CART = null;
MAIN_CART = "{\"service\":[%s]}";
String temstring = "";
for (int i = 0; i < arrayList.size(); i++) {
substring = "{\"title\":\"" + arrayList.get(i).getTitle() + "\",\"subcatid\":\"" + arrayList.get(i).getSubcatid()
+ "\",\"amount\":\"" + "" + "\",\"description\":\"" + "" + "\"}" + ",";
temstring = temstring + substring;
}
temstring = temstring.substring(0, temstring.length() - 1);
msgString = msgString + String.format(MAIN_CART, temstring);
Log.e("msgString=============", msgString);
}
This is the method where all the items are adding in the list
public String parseanimcat(String object) {
try {
JSONObject json = new JSONObject(object);
JSONObject jsonobj = json.getJSONObject("data");
status1 = jsonobj.getString("status");
message = jsonobj.getString("message");
arrayList = new ArrayList<>();
JSONArray jarray = jsonobj.getJSONArray("dataFound");
for (int i = 0; i <= jarray.length(); i++) {
JSONObject jobj = jarray.getJSONObject(i);
String category = jobj.getString("category");
String subsubcat_id = jobj.getString("subsubcat_id");
Toast.makeText(ServicHomepage.this, category + "==" + subsubcat_id, Toast.LENGTH_SHORT).show();
model = new Data_Model();
model.setTitle(category);
model.setSubcatid(subsubcat_id);
arrayList.add(model);
}
} catch (JSONException e) {
e.printStackTrace();
}
return object;
}
This is my adapter class-
private class service_list_adapter extends ArrayAdapter<Data_Model>{
private ArrayList<Data_Model> array_list;
Context context;
String[] etValArr;
ViewHolder holder;
String[] totalValue;
Data_Model model;
HashMap<String, String> hm = new HashMap<>();
ArrayList<HashMap<String, String>> list = new ArrayList<>();
public service_list_adapter(Context context,int resourceId,ArrayList<Data_Model> arrayList) {
super(context,resourceId,arrayList);
this.context = context;
this.array_list = arrayList;
etValArr = new String[array_list.size()];
totalValue = new String[array_list.size()];
}
private class ViewHolder {
public TextView serv_title;
public EditText serv_descrptn, serv_amount;
}
public View getView(int position, View convertView, ViewGroup parent) {
model = array_list.get(position);
POSITION = position;
LayoutInflater mInflater = (LayoutInflater) context
.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = mInflater.inflate(R.layout.serv_cat_rowitem, null);
holder = new ViewHolder();
holder.serv_title = (TextView) convertView.findViewById(R.id.serv_txt);
holder.serv_descrptn = (EditText) convertView.findViewById(R.id.et_description);
holder.serv_amount = (EditText) convertView.findViewById(R.id.et_amount);
convertView.setTag(holder);
holder.serv_title.setTag(position);
holder.serv_descrptn.setTag(position);
holder.serv_amount.setTag(position);
} else
holder = (ViewHolder) convertView.getTag();
holder.serv_title.setText(model.getTitle());
holder.serv_descrptn.setText(model.getServdescription());
holder.serv_amount.setText(model.getServamount());
holder.serv_amount.addTextChangedListener(new TextWatcher() {
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void afterTextChanged(Editable s) {
model.setServamount(s.toString());
}
});
holder.serv_descrptn.addTextChangedListener(new TextWatcher() {
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void afterTextChanged(Editable s) {
model.setServdescription(s.toString());
}
});
return convertView;
}
}
be more specific exactly which editText value you want.
you can implement onScrollListner on list and save the value of the editText on that event and later use it
i have create an app in which,i want to show the checkbox prechecked with the help of xml,and after that user can checked or uncheked the checkbox,but xaml is not showing it checked on start of the app in device,what is the problem.please advise.
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>
Hi, I have a listview and i'm wanting it so that when you press on an item it stores your selection in shared preferences. The purpose for this is so that next time I open the app it skips the selection process.
So what I'm wanting to know is how do I incorporate this function into my code?
Here is my code so far:
public class SelectTeamActivity extends ListActivity {
public String fulldata = null;
public String position = null;
public String divisionName= null;
public List<String> teamsList = null;
public String divName = null;
protected void loadData() {
fulldata = getIntent().getStringExtra("fullData");
position = getIntent().getStringExtra("itemIndex");
Log.v("lc", "selectteamActivity:" + fulldata);
Log.v("lc", "position:" + position);
int positionInt = Integer.parseInt(position);
try{
JSONObject obj = new JSONObject(fulldata);
teamsList = new ArrayList<String>();
JSONObject objData = obj.getJSONObject("data");
JSONArray teamInfoArray = objData.getJSONArray("structure");
for(int r = 0; r < teamInfoArray.length(); r++ ){
JSONObject teamFeedStructureDict = teamInfoArray.getJSONObject(r);
JSONArray teamStructureArray =
(JSONArray) teamFeedStructureDict.get("divisions");
JSONObject teamFeedDivisionsDictionary =
teamStructureArray.getJSONObject(positionInt);
divName = teamFeedDivisionsDictionary.getString("name");
JSONArray teamNamesArray =
(JSONArray) teamFeedDivisionsDictionary.get("teams");
for(int t = 0; t < teamNamesArray.length(); t++){
JSONObject teamNamesDict = teamNamesArray.getJSONObject(t);
teamsList.add(teamNamesDict.getString("name"));
}
}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.selectact);
loadData();
TextView headerText = (TextView) findViewById(R.id.header_text);
headerText.setText(divName);
TextView redHeaderText = (TextView) findViewById(R.id.redheadertext);
redHeaderText.setText("Please select your team:");
setListAdapter( new ArrayAdapter<String>(this, R.layout.single_item,
teamsList));
ListView list = getListView();
list.setTextFilterEnabled(true);
}
#Override
protected void onListItemClick (ListView l, View v, int position, long id) {
Intent intent = new Intent(this, HomeActivity.class);
String curPos = Integer.toString(position);
//or just use the position:
intent.putExtra("itemIndex", curPos);
intent.putExtra("fullData", fulldata); //or just the part you want
startActivity(intent);
}
}
In your Activity's onCreate():
SharedPreferences preferences = getSharedPreferences("preferences", MODE_WORLD_WRITEABLE);
In your onListItemClick():
preferences.edit().putInt("KEY", position).commit();
Everywhere in your project:
int position = preferences.getInt("KEY", -1);
(-1 is a default value that means when there is no value with the given key, return this value)