I have successfully implemented my AutoCompleteTextView which is based off an SQLite query and is placed in an array adapter. That's all working beautifully, however I can't get my onclickevent working.
I just want to create an intent to pass the selected value to a new activity. I know how to create an onclicklistener. I am just unsure about how to apply it to the dropdown box of the AutoCompleteTextView.
Nevermind. I've solved it. I was just executing poorly. The code below autocompletes my textview based off a simple SELECT SQLite statement and executes when the user selects the university from the dropdown list.
The onclick event creates a new intent and starts a new activity passing the selection to this activity within the intent.
final AutoCompleteTextView textView = (AutoCompleteTextView) findViewById(R.id.ac_university);
String[] universities = myDbHelper.getAllUnis(db);
// Print out the values to the log
for(int i = 0; i < universities.length; i++)
{
Log.i(this.toString(), universities[i]);
}
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.list_item, universities);
textView.setAdapter(adapter);
//textView.setOnItemSelectedListener(this);
textView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
Intent intent = new Intent(Main.this, Campus.class);
Bundle bundle = new Bundle();
bundle.putString("university_name", arg0.getItemAtPosition(arg2).toString());
bundle.putLong("_id", arg3);
intent.putExtras(bundle);
startActivity(intent);
}
putExtra function can be used for this purpose.
Here is an example...
Form the sending activity:
lv.setOnItemClickListener(new OnItemClickListener()
{
public void onItemClick(AdapterView<?> parent, View v, int pos, long id) {
ApplicationInfo x = appinstalled.get(pos);
PackageInfo y = appinstall.get(pos);
//Intent i = new Intent(InstalledPackages.this, Information.class);
i = new Intent(InstalledPackages.this, Information.class);
i.putExtra("i",x);
i.putExtra("j", y);
startActivity(i);
}
});
}
On the receiving side:
super.onCreate(savedInstanceState);
Intent myIntent = getIntent();
ApplicationInfo i = (ApplicationInfo)myIntent.getParcelableExtra("i");
PackageInfo j = (PackageInfo)myIntent.getParcelableExtra("j");
Related
I have an SQLite database and a ListView displaying in the main activity. In the ListView, I display the details of each list number and upon pressing the list item, a new activity opens up which displays the details in a TextView.
I have a delete function for each of these ListViews and they are not working properly. Essentially, a unique ID is given to each created ListView, which is how the SQLite databases should work. However, upon deleting a row within the ListView, the unique ID increases but the row ID deletes that number and moves everything up. This means that after you delete an item, the row IDs and the database IDs no longer match up and when trying to select an item within the ListView, it crashes. This is an extract from my database adapter class:
public Integer deleteStat(Integer id) {
SQLiteDatabase db = this.getWritableDatabase();
return db.delete(STATS_TABLE, "id = ? ", new String[]{Integer.toString(id)});
}
This is my first attempt in the main activity. I got some information from this post but a failed to get the correct integer and received syntax errors:
obj.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
TextView pos = (TextView) findViewById(R.id.editTitle);
displayText(Integer.parseInt(pos.getText().toString()));
}
});
}
public void displayText(int pos)
{
pos++;
String s = "";
s += pos;
Intent intent = new Intent(getApplicationContext(), DisplayStatsActivity.class);
intent.putExtra("id", s);
startActivity(intent);
}
This is my second attempt in the main activity. I used this tutorial to help me. The code I used from that website ruined the entire delete functionality:
obj.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
int id_To_Search = arg2 + 1;
int id_To_Search = arg0.getCount() - arg2;
Bundle dataBundle = new Bundle();
dataBundle.putInt("id", id_To_Search);
Intent intent = new Intent(getApplicationContext(), DisplayStatsActivity.class);
intent.putExtras(dataBundle);
startActivity(intent);
How do I get the database IDs to match up with the row IDs? Any suggestions on how to do that?
EDIT: Added in Hashmap Code. When I press on a ListView Item, nothing happens
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
mydb = new StatisticsDbAdapter(this);
ArrayList array_list = mydb.getAllStats();
ArrayAdapter arrayAdapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, array_list);
obj = (ListView) findViewById(R.id.listView1);
obj.setAdapter(arrayAdapter);
/*
New code starts here
*/
Bundle extras = getIntent().getExtras();
if (extras != null) {
int Value = extras.getInt("id");
if (Value > 0) {
//means this is the view part not the add contact part
Cursor cursor = mydb.getData(Value);
hashMap.put(cursor.getString(1), cursor.getInt(0));
obj.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int arg2, long arg3) {
TextView textView = (TextView) view.findViewById(R.id.editTitle);
Bundle dataBundle = new Bundle();
dataBundle.putInt("id", hashMap.get(textView.getText().toString()));
Intent intent = new Intent(getApplicationContext(), DisplayStatsActivity.class);
intent.putExtras(dataBundle);
startActivity(intent);
}
});
}
}
}
You should never pass a ListView position to delete a row in a database. I have done that many times before. First of all, within the class you are managing the click events, create a new HashMap. This HashMap will be used to store our row IDs from the database and we'll refer to that rather than the ListView item position. To create it, type this code:
public HashMap<String, Integer> hashMap = new HashMap<>();
Once you have done that, in the function where you display all of the rows in the ListView, you must also load up the same items into the HashMap like this:
hashMap.put(cursor.getString(1), cursor.getInt(0));
Please note that cursor.getString(1) might not be what you used. Please replace the 1 with your appropriate column number that has the name stored within it. cursor.getInt(0) gets the row ID from the database and the column number might be different for you, too. Now, within our OnClickListener function, we can type:
obj.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view) {
TextView textView = (TextView) view.findViewById(R.id.editTitle);
Bundle bundle = new Bundle();
bundle.putInt("id", hashMap.get(textView.getText().toString()));
Intent intent = new Intent(getApplicationContext(), DisplayStatsActivity.class);
intent.putExtras(bundle);
startActivity(intent);
}
Please note that the hashMap variable needs to be within the same class where you manage the click events of your ListView or you will get mistakes. Some of the parametres that you originally passed were removed since you don't need them. Also, I found this to work much better using a RecyclerView but that's now up to you. If you're having problems, please don't hesitate to comment below and I'll try to answer as soon as possible.
I want to get the item on list view to edit Text in another activity.
When clicked on list view item, I want to transfer the item in another activity in edit Text.
You have to make onItemClickListner of listview like that.
listView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent i = new Intent(getApplicationContext(), SecondActivity.class);
i.putExtra("new_variable_name","value");
startActivity(i);
}
});
Then in the new Activity, retrieve those values:
Bundle extras = getIntent().getExtras();
if (extras != null) {
String value = extras.getString("new_variable_name");
}
And finally set Value to editText like this
editText.setText(value);
Hope this will help you.
lstView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Intent intent = new Intent(getActivity(), NewActivity.class);
intent.putExtra("text", text want to transfer);
startActivity(intent);
}
});
You can make use of SharedPreferences. And when you pass the content of the ListView to the next activity, you can use editText.setText("Your Text").
You can also pass your data through intents from which you are calling your new activity.
create onClick method like this.
ListView list = (ListView) findViewById(R.id.newsList);
list.setAdapter(adapter);
list.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long offset) {
NewsItem item = (NewsItem) adapter.getItem(position);
Intent intent = new Intent(getApplicationContext(), NewsDetailsActivity.class);
intent.putExtra(KEY, item.getHeadline());
startActivity(intent);
}
});
In next activity
Intent intent = getIntent();
headline = intent.getStringExtra(KEY);
have a look here
I've an Activity containing a basic Listview. The functionality works as follows:
click a listview item -> get the listview item name -> pass the name with intent and start a new activity.
Everything is working except for the start of a new Activity. Its just not responsive and I cannot see why. I would really appreciate an extra pair of eyes to look over this.
listView = getListView();
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, foodNames);
listView.setAdapter(adapter);
listView.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
public void onItemSelected(AdapterView parentView, View childView, int position, long id) {
TextView tv = (TextView) listView.getSelectedItem();
String value = tv.getText().toString();
Log.v("DEBUG","Name of item clicked" + value);
Intent intent = new Intent(childView.getContext(), FoodItemActivity.class);
intent.putExtra("FoodName", value );
startActivity(intent);
}
public void onNothingSelected(AdapterView parentView) {
}
});
I think you are missing line
startActivity(intent);
:-)
try it this way:
listView.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Intent intent = new Intent(view.getContext(), FoodItemActivity.class);
intent.putExtra("FoodName", value );
startActivity(intent);
}
});
this will solve your question, and if still problem arises, then do confirm that all the child controls are focusable=false and clickable=false.
I have been struggling using some tutorial for passing a listview option to a new activity and make it the title (I will do other stuff with it later). I have set up a OnClickListener by what is best to put inside it
ListView listView1 = (ListView) findViewById(R.id.sportslist);
String[] items = { "Archery", "Badminton", "Cricket", "Dodgeball", "Equestrian", "Football", "Golf", "Handball", "Ice Hockey", "Ju Jitsu", "Karate", "Lacrosse", "Mountain Biking", "Netball" };
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, items);
listView1.setAdapter(adapter);
listView1.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,int position, long id)
?????
}
});
Thanks
EDIT:Extra code
final TextView changetitle = (TextView) findViewById(R.id.detailedsocietyname);
changetitle.setText(name);
For of all you will need to get the item that was selected:
final String selected = items[position];
Or as doctoror drive has suggested
final String selected = (String) parent.getSelectedItem();
Then you will need to pass that string as an extra to your new activity
Intent i = new Intent(getApplicationContext(), MyClass.class);
i.putExtra("name", selected);
startActivity (i);
And then finally in your next activity
Intent in = getIntent();
String name = in.getStringExtra(("name"));//gets name from intent
public void onItemClick(AdapterView parent, View view,int position, long id)
String str = items[position];
Intent in = new Intent(getApplicationContext(), NextClass.class);
in.putExtra("itemkey", str);
startActivity (in);
}
in public void onItemClick(AdapterView<?> parent, View view,int position, long id) add this code.
Intent i = new Intent(getApplicationContext(), NextClass.class);
i.putExtra("selectedItem", items[position]);
startActivity (i);
for getting value in NextClass Activitiy :
String SelectedItem = getIntent().getStringExtra("selectedItem");
Add the following to you Activity where you have listview
following is the variable that will contain the value that you want to pass to other activity
Declare it before Oncreate statement
// Activity_1
public final static String send_to_other_activity="ListViewSelected_ID";
Add the following code to the listView1.setOnItemClickListener
Intent i= new Intent(Recipe_List.this,Recipe_View.class);
i.putExtra(send_to_other_activity, string.valueof(position));
// itz (key-value) pair on the left key thru which u will access it on other place. on the right value that you want to pass
// Iam passing posiion to other activity here
startActivity(i);
Now on other activity extract this value from the key by adding following statement to the oonCreate of other activity
//Activity_2
getdata_from_list =getIntent().getStringExtra(Activity_1.send_to_other_activity);
now you have teh desired value in getdata_from_list
I searched stackoverflow but couldnt find a answer(sure there is one somewhere) but I am trying to add a activity for each listview input. I can manage it with one intent but how do I give each listview input a seperate activity. So to be clear, I want to make every item have a serperate activity.
Currently use this code to initiate a activity but want individual activities for each item.
public class ListviewActivityActivity extends ListActivity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// storing string resources into Array
String[] adobe_products = getResources().getStringArray(R.array.list_products);
// Binding resources Array to ListAdapter
this.setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item, R.id.label, adobe_products));
ListView lv = getListView();
// listening to single list item on click
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// selected item
String product = ((TextView) view).getText().toString();
// Launching new Activity on selecting single List Item
Intent i = new Intent(getApplicationContext(), BMICalculatorActivity.class);
startActivity(i);
}
});
}
Have tried adding this but it failed to work
private static final int ACTIVITY_0 = 0;
private static final int ACTIVITY_1 = 1;
private static final int ACTIVITY_2 = 2;
protected void onListItemClick(ListView l, View v, int position, long id)
{
super.onListItemClick(l, v, position, id);
final Intent intent = new Intent();
// Set up different intents based on the item clicked:
switch (position)
{
case ACTIVITY_0:
intent.setClass(this, listview.activty.BMICalculatorActivity.class);
break;
case ACTIVITY_1:
intent.setClass(this, listview.activty.BodyLog.class);
break;
I know its probally simple to sort so any help would be amazing. Thanks
I think you want something like this :
Intent i = null;
switch (position)
{
case ACTIVITY_0:
i = new Intent(getApplicationContext(), BMICalculatorActivity.class);
break;
case ACTIVITY_1:
i = new Intent(getApplicationContext(), BodyLog.class);
break;
}
if(i != null)
{
startActivity(i);
}
Try something like this:
// listening to single list item on click
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Intent i;
// selected item
String product = (String) lv.getItem(position);
if(product.equals("photoshop"))
i = new Intent(ListviewActivity.this, Photoshop.class);
else if (product.equals("final cut pro"))
i = new Intent(ListviewActivity.this, FinalCutPro.class);
else
i = new Intent(ListviewActivity.this, Generic.class);
startActivity(i);
}
});
Another option would be to make a POJO that held the name of the listview entry and the class to call. And add an array of those instead of an array of Strings. This will require using an ArrayAdapter of some kind. Then when you get the Item, you simply call startActivity(new Intent(listviewActivity.this, myPojo.classToCall); You should be able to find a good example of that somewhere on SO...