I encountered a silly problem.
I have an identical thing working already, but for the second try, the onItemClick is not doing anything. I re-re-rechecked so many times now, but nothing seems to catch my eye. Please take a look and let me know what is wrong
So here is my setup.
The activity:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_promotionale);
ListView mylist = (ListView) findViewById(R.id.lv_promotionale);
mylist.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
Toast.makeText(PromotionaleActivity.this,"I touched an item at position"+Integer.toString(position),Toast.LENGTH_SHORT).show();
}
});
The activity layout is:
<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"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ListView
android:layout_width="wrap_content"
android:layout_height="370dp"
android:id="#+id/lv_promotionale" />
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="65dp"
android:weightSum="1">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="Some text here"
android:id="#+id/textView"
android:paddingLeft="15dp"
android:paddingStart="15dp"
android:paddingTop="15dp"
android:paddingRight="0dp"
android:paddingEnd="0dp"
android:paddingBottom="0dp" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
EDIT
Here is the method where I load my listview with data using an external adapter
public void LoadListWithStuff(){
SQLiteDatabase db = new myDbHelper(getApplicationContext()).getWritableDatabase();
Cursor mCursor = db.rawQuery("select _id,data,numar,idclient,numeclient,tipclient,trimisa from cereri_mst order by data,numar desc" , null);
idid.clear();
idclient.clear();
numeclient.clear();
tipclient.clear();
datacerere.clear();
numarcerere.clear();
trimisa.clear();
if (mCursor.moveToFirst()) {
do {
idid.add(Integer.toString(mCursor.getInt(0)));
datacerere.add(mCursor.getString(1));
numarcerere.add(mCursor.getString(2));
idclient.add(Integer.toString(mCursor.getInt(3)));
numeclient.add(mCursor.getString(4));
tipclient.add(mCursor.getString(5));
trimisa.add(mCursor.getString(6));
} while (mCursor.moveToNext());
}
DisplayCereriAdapter disadpt = new DisplayCereriAdapter(PromotionaleActivity.this,idid,idclient,
numeclient, tipclient,datacerere,numarcerere,trimisa);
ListView lv = (ListView) findViewById(R.id.lv_promotionale);
lv.setAdapter(disadpt);
mCursor.close();
db.close();
}
Also, I must say here that the listview is populated. I can see the contents of the listView. The only problem is that I cannot seem to catch the ItemClick and longClick events on the listview...
Why doesn't it work?????
I am going crazy here...
Thank you
The solution I found was to stop using the checkBox and replace it with ImageView... Now all works fine
Related
New to Android, sorry if there's something I should be including here that I'm not.
Anyway, I'm trying to make a custom layout for a list. Whenever I try to run the app, it closes and sends a "AppName has crashed" error modal. When I use a built-in android layout, this doesn't happen. I'm not sure if the issue is my code or my emulator (Running on a Nexus 5 with 1GB RAM)
Here's layout/row_layout.xml
<LinearLayout
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"
android:orientation="vertical"
tools:context=".MainActivity">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView1"
android:textSize="50sp"
android:textStyle="bold"
android:padding="15dp"/>
</LinearLayout>
Here's layout/activity_main.xml
<LinearLayout 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"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context=".MainActivity">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/theListView"></ListView>
</LinearLayout>
And here's the onCreate method in MainActivity.java (I haven't edited anything else)
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String[] favoriteTVShows = {"The Office", "The Wire", "Mr. Robot", "Parks and Rec",
"Fool Us", "Garbage Time", "Last Week Tonight", "Silicon Valley"};
ListAdapter theAdapter = new ArrayAdapter<String>(this, R.layout.row_layout,
favoriteTVShows);
ListView theListView = (ListView) findViewById(R.id.theListView);
theListView.setAdapter(theAdapter);
theListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView,
View view, int position,
long id) {
String tvShowPicked = "You selected " +
String.valueOf(adapterView
.getItemAtPosition(position));
Toast.makeText(MainActivity.this, tvShowPicked,
Toast.LENGTH_SHORT).show();
}
});
}
You have to set the adapter to a view that can contain the text, meaning that instead of using a LinearLayout as a base, use a TextView:
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView1"
android:textSize="50sp"
android:textStyle="bold"
android:padding="15dp"/>
A lot of people had this same issue before, but I haven't been able to solve it using their solutions..
I've got a ListActivity with a custom ArrayAdapter, but I can't seem to trigger the onItemClick.
I've tried it both with the default #Override protected void onListItemClick(...) which didn't trigger, and also with a myListView.setOnItemClickListener(new OnItemClickListener(){ ... });, which also didn't work.
From previous stackoverflow questions regarding this matter I've used the following pieces of code in the xml:
android:focusableInTouchMode="false"
android:clickable="false"
android:focusable="false"`
In the list_item.xml views
Or android:descendantFocusability="afterDescendants" in the ListView itself.
Here below is the main part of code regarding this problem:
ChecklistActivity.java:
public class ChecklistActivity extends ListActivity
{
private List<Product> products;
#Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_checklist);
// test products:
products = new ArrayList<Product>();
for(int i = 0; i < 5; i++){
Product p = new Product();
p.setName("Product " + i);
products.add(p);
}
MyAdapter adapt = new MyAdapter(this, R.layout.list_inner_view, products);
setListAdapter(adapt);
ListView lv = (ListView) findViewById(android.R.id.list);
lv.setOnItemClickListener(new OnItemClickListener(){
#Override
public void onItemClick(AdapterView<?> adapt, View v, int position, long id){
onListItemClick(v);
}
});
...
}
private void onListItemClick(View v){
Log.i("CHECKLIST ACTIVITY", "onListItemClick triggered");
...
}
list_item.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="match_parent"
android:orientation="horizontal"
android:layout_gravity="center_vertical"
android:focusableInTouchMode="false"
android:clickable="false"
android:focusable="false" >
<ImageView
android:id="#+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:contentDescription="#string/checkbox_content_description"
android:src="#drawable/checkbox_unchecked"
android:background="#drawable/transparent_background"
android:focusableInTouchMode="false"
android:clickable="false"
android:focusable="false" />
<TextView
android:id="#+id/tv_product_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:focusableInTouchMode="false"
android:clickable="false"
android:focusable="false"
android:textIsSelectable="false" />
</LinearLayout>
activity_list.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">
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:descendantFocusability="afterDescendants" />
</RelativeLayout>
Ok, very stupid of me.. I removed
android:focusableInTouchMode="false"
android:clickable="false"
android:focusable="false"
from the LinearLayout of the list_item.xml and now it works..
My app is using landscape full screen mode and the navigation drawer. I am using listView in my app along with an edittext. The edittext is the search bar that will search the listview. Both the listview and the edittext are in the navigation drawer. But, when there is no list item that matches the searched word, the listview gets empty.
So how can I add a "Item not found" message instead of the blank listview?
I searched a lot on the internet and found a method setEmptyView(); but I couldn't understand it and hence it is not working. Please help me! Maybe this question is already asked here but please give me an easy explanation.
Here is my code:
MainActivity.java
public class MainActivity extends FragmentActivity {
final String[] data = {"Hydrogen","Helium","Lithium","Beryllium","Boron","Carbon","Nitrogen","Oxygen","Flourine","Noen","Sodium","Magnesium","Aluminium","Silicon","Phosphorous","Sulphur","Chlorine","Argon","Potassium","Calcium","Scandium","Titanium","Vanadium","Chromium","Manganese","Iron","Cobalt","Nickel","Copper","Zinc","Gallium","Germanium","Arsenic","Selenium","Bromine","Krypton","Rubidium","Strontium","Yttrium","Zirconium","Niobium","Molybdenum","Technetium","Ruthenium","Rhodium","Palladium","Silver","Cadmium","Indium","Tin","Antimony","Tellurium"};
ArrayAdapter<String> adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, data);
final EditText searchBar = (EditText) findViewById(R.id.searchbar);
final DrawerLayout drawer = (DrawerLayout)findViewById(R.id.drawer_layout);
final ListView navList = (ListView) findViewById(R.id.left_drawer);
final LinearLayout linearLayout = (LinearLayout)findViewById(R.id.left_drawer_layout);
navList.setAdapter(adapter);
searchBar.addTextChangedListener(new TextWatcher() {
#Override
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
MainActivity.this.adapter.getFilter().filter(cs);
}
#Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
}
#Override
public void afterTextChanged(Editable arg0) {
}
});
//the code below will automatically close the keyboard when the user will touch the listview
navList.setOnScrollListener(new AbsListView.OnScrollListener() {
public void onScrollStateChanged(AbsListView view, int scrollState) {
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(navList.getWindowToken(), 0);
}
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
}
});
}
}
mainactivity.xml
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="#+id/content_frame"
android:layout_width="match_parent"
android:background="#000000"
android:layout_height="match_parent" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Swipe from the left to open the drawer"
android:id="#+id/textView"
android:layout_gravity="center" />
</FrameLayout>
<LinearLayout
android:id="#+id/left_drawer_layout"
android:layout_height="fill_parent"
android:layout_width="240dp"
android:background="#111"
android:orientation="vertical"
android:layout_gravity="start" >
<EditText
android:id="#+id/searchbar"
android:layout_width="230dp"
android:layout_height="40dp"
android:textColor="#bfc2d1"
android:singleLine="true"
android:padding="10dp"
android:background="#drawable/search_bar"
android:layout_marginLeft="3dp"
android:layout_marginRight="3dp"
android:imeOptions="flagNoExtractUi"
android:hint=" search" >
</EditText>
<TextView
android:id="#+id/notfound"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
style="#android:style/TextAppearance.Medium"
android:gravity="center">
</TextView>
<ListView android:id="#+id/left_drawer"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:choiceMode="singleChoice"
android:divider="#android:color/transparent"
android:dividerHeight="0dp"
android:background="#111"/>
</LinearLayout>
</android.support.v4.widget.DrawerLayout>
Yes you have mentioned about setEmptyView() correctly, you should use it if you would want to show empty message whenever ListView gets empty.
Now here is a xml layout and code depicts how to use setEmptyView exactly.
<LinearLayout
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/layoutTitlebar" >
<ListView
android:id="#+id/listViewFriends"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/friendBGColor"
android:cacheColorHint="#00000000" >
</ListView>
<TextView
android:id="#+id/empty"
style="#android:style/TextAppearance.Large"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:text="#string/strNoRecordsFound" >
</TextView>
</LinearLayout>
Now, you have to set this empty view (i.e. TextView) to ListView by using:
ListView listViewFriends = (ListView) findViewById(R.id.listViewFriends);
// set your adapter here
// set your click listener here
// or whatever else
listViewFriends.setEmptyView(findViewById(R.id.empty));
This method is all that you need
http://developer.android.com/reference/android/widget/AdapterView.html#setEmptyView(android.view.View)
Have in mind it accepts a view, so you have to inflate the layout and fill out any/all text you may have there by yourself.
EDIT:
Let's assume you have a layout named "empty_text" like this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="There are no entries in this list"
android:gravity="center"/>
</LinearLayout>
Hint: I burned in the string for example purposes, heed the IDE warning and use a string identifier for I18n's sake
Now you would use this code to make it all work with the ListView:
LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View emptyTextView = inflater.inflate(R.layout.empty_text, null, false);
listView.setEmptyView(emptyTextView);
This code assumes you are executing inside an Activity, but just in case you don't plan on pasting it on an Activity, any Context instance will work.
That should be it.
ListView lv = (ListView)findViewById(android.R.id.list);
TextView emptyText = (TextView)findViewById(android.R.id.empty);
lv.setEmptyView(emptyText);
Then your listview will automatically use this view when its adapter is empty.
Detailed Solution:
Layout:
<ListView
android:id="#+id/listViewFriends"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:background="#color/friendBGColor"
android:cacheColorHint="#00000000">
</ListView>
<TextView
android:id="#+id/empty"
android:text="#string/strNoRecordsFound"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
style="#android:style/TextAppearance.Large"
android:gravity="center">
</TextView>
</LinearLayout>
Class File:
ListView listViewFriends = (ListView) findViewById(R.id.listViewFriends);
listViewFriends.setEmptyView(findViewById(R.id.empty));
Source
im trying to make an activity that searches a DB based on an input string and then returns the results in a list view. All this is working however, My listview items are not clickable. I have tried changing the focus and clickable attributes but nothing has worked so far.
Main XML (add_friend_layout.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" >
<LinearLayout android:id="#+id/AddFriendHeaderLayout"
android:layout_marginTop="3dip"
android:layout_height="45dip"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:gravity="center">
<EditText
android:id="#+id/et_SearchFriend"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="20dp"
android:ems="10"
android:inputType="text" />
<Button
android:id="#+id/bt_SearchFriend"
android:layout_width="wrap_content"
android:layout_height="40dip"
android:focusable="false"
android:icon="#android:drawable/ic_search_category_default"
android:text="Search" >
</Button>
</LinearLayout>
<LinearLayout android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginTop="60dip"
android:layout_marginBottom="5dip"
android:layout_alignParentBottom="true"
android:layout_above="#+id/AddFriendHeaderLayout"
android:id="#+id/searchFriendFooterLayout">
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:clickable="true"
android:layout_height="wrap_content">
</ListView>
</LinearLayout>
</RelativeLayout>
ListView XML (single_listview_layout.xml):
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:clickable="true" >
<TextView
android:id="#+id/tv_list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:textSize="20sp" >
</TextView>
</LinearLayout>
Main Java Function (SearchFriendActivity.java):
public class SearchFriendActivity extends ListActivity {
//Progress Dialog
private ProgressDialog pDialog;
private Button bt_searchFriend;
private EditText et_Search_String;
private ListView tv_listview;
String[] arrFriends;
String[] arrUserId;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
try{
setContentView(R.layout.add_friend_layout);
bt_searchFriend= (Button) findViewById(R.id.bt_SearchFriend);
et_Search_String = (EditText) findViewById(R.id.et_SearchFriend);
tv_listview = (ListView) findViewById(R.id.tv_list);
String searchString="";
//searchString = String.valueOf(et_Search_String.getText());
Log.i ("log_search","value of searchString: " + searchString);
bt_searchFriend.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View view) {
try{
searchFriends aTask = new searchFriends();
aTask.execute(String.valueOf(et_Search_String.getText()));
String rResult = aTask.get();
// Convert aResult to array
arrFriends = convertJSONData(rResult);
arrUserId = convertJSONDataToUserArray(rResult);
setListAdapter(new ArrayAdapter<String>
(getBaseContext(),
R.layout.single_listview_layout,
R.id.tv_list,
arrFriends));
}catch(Exception e){
Log.e ("log_search_load",e.toString());
}
}
});
tv_listview = getListView();
//handler for List Item click
tv_listview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// When clicked, show a toast with the TextView text
Toast.makeText(getApplicationContext(),
"Friend request sent for " +
((TextView) view).getText(),
Toast.LENGTH_SHORT).show();
Log.i("log_search_listclick", "Listview clicked");
}
});
}catch(Exception e){
Log.e ("log_search_load2",e.toString());
}
}
Firstly, don't use focusable and clickable. When you use setOnclick or another they are auto creating.
Secondly, remove try cache blog then start application. Because when the problem created program will contining and you can't understand where is the problem.
===>Thirdly<====
you are used (tv_listview=...) second twice
tv_listview = (ListView) findViewById(R.id.tv_list);
tv_listview = getListView();
then you are trying tv_listview.setOnItemClickListener..... If second view is not first view seton not working on "R.id.tv_list".
I have a list of items in android app, and i want to start another activity if the user clicks on any item in that list. I have the following piece of (relevant) code.
Strangely enough, its working good enough on HTC velocity 4g (android 2.3.7), whereas I have tried the same app on HTC one S (android 4.1.1) and nothing happens when i click any item in the list. Does anyone have any idea what could be the problem here???
lv = (ListView)findViewById(R.id.listView1);
this.adapter = new SimpleAdapter(DisplayWiFiListActivity.this, arraylist, R.layout.row, new String[] { ITEM_KEY }, new int[] { R.id.abcd });
lv.setAdapter(this.adapter);
// React to user clicks on item
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parentAdapter, View view, int position,
long id) {
String text = parentAdapter.getItemAtPosition(position).toString();
text = text.substring(5,text.length()-1);
Intent intent = new Intent(DisplayWiFiListActivity.this, MainActivity.class);
DisplayWiFiListActivity.this.startActivity(intent);
intent.putExtra(EXTRA_MESSAGE, text);
startActivity(intent);
Toast.makeText(DisplayWiFiListActivity.this, text, Toast.LENGTH_SHORT).show();
}
});
row.xml is following
<?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="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/abcd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textIsSelectable="true"
android:clickable="true"
android:layout_marginTop="20dp" />
</LinearLayout>
activity_display_wifi_list.xml is following
<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"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".DisplayWiFiListActivity" >
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:clickable="true"
android:layout_marginTop="100dp" >
</ListView>
<Button
android:id="#+id/buttonScan"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="#string/refresh_list" />
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/buttonScan"
android:textStyle="normal|italic"
android:layout_centerHorizontal="true"
android:layout_marginTop="18dp"/>
</RelativeLayout>
Please post your code of SimpleAdapter or if you have any Button Widget in listitem layout pls make it focus-able false;