Develop Reference

Issue with trying to get an EditText, because of a casting issue

I'm working on a gallery type app. The issue that I have at the moment is trying to fetch the typed text within an EditText. The error that I am getting is a casting exception because the code fetches the EditText block from the layout as a TextView block. This only occurs after I swipe, which causes the some of the LinearLayouts imbeded in the second GridLayout to be removed.
The LinearLayouts are put in at runtime into the Gridlayout (with the id product_details), the amount Layouts is calculated according to which picture is pressed on.
This part of the code fetches the current LinearLayouts that are imbeded in the GridLayout:
for (int i = 0; i<codes.size(); i++) {
//Sets the different elements to te correct texts
ViewGroup linearLayout = (ViewGroup) gridLayout.getChildAt(i);
TextView textCode = (TextView) linearLayout.getChildAt(0);
TextView textPrice = (TextView) linearLayout.getChildAt(1);
EditText editTextQ = (EditText) linearLayout.getChildAt(2);
EditText editTextC = (EditText) linearLayout.getChildAt(4);
commentsAddList.add(editTextC.getText().toString());
quantityAddList.add(editTextQ.getText().toString());
priceAddList.add(textPrice.getText().toString().substring(1));
codeAddList.add(textCode.getText().toString());
productModelAddList.add(new ProductModel());
productModelAddList.get(i).setCode(codeAddList.get(i));
if(!quantityAddList.get(i).equals("")) {
productModelAddList.get(i).setQuantity(Integer.parseInt(quantityAddList.get(i)));
}else{
productModelAddList.get(i).setQuantity(0);
}
productModelAddList.get(i).setComment(commentsAddList.get(i));
if(!priceAddList.get(i).equals("")) {
productModelAddList.get(i).setPrice(Double.parseDouble(priceAddList.get(i)));
}else{
productModelAddList.get(i).setPrice(0);
}
mRequestPermissions();
adaptToText.addToList(productModelAddList.get(i));
}
The main picture xml Layout:
<?xml version="1.0" encoding="utf-8"?>
<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/imageLayout"
android:columnCount="2"
android:verticalSpacing="0dp"
android:horizontalSpacing="10dp"
android:stretchMode="columnWidth"
android:gravity="center"
android:fitsSystemWindows="true">
<ImageView
android:layout_columnSpan="1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView"/>
<GridLayout
android:id="#+id/product_details"
android:columnCount="1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center">
</GridLayout>
</GridLayout>
The LinearLayout that is inserted into the GridLayout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:layout_columnSpan="1"
android:verticalSpacing="10dp"
android:horizontalSpacing="10dp"
android:stretchMode="columnWidth"
android:id="#+id/orderSideLayout">
<TextView
android:layout_height="match_parent"
android:layout_width="match_parent"
android:layout_gravity="fill_horizontal"
android:id="#+id/productCode"
android:text=""
android:padding="10dp"/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="fill_horizontal"
android:id="#+id/productPrice"
android:text=""
android:padding="10dp"
android:paddingLeft="20dp"/>
<EditText
android:layout_width="match_parent"
android:id="#+id/editText1"
android:hint="Quantity goes here"
android:layout_gravity="fill_horizontal"
android:layout_height="wrap_content"
android:inputType="number"/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="fill_horizontal"
android:id="#+id/comments"
android:text="Comments: "
android:padding="10dp"
android:paddingLeft="20dp"/>
<EditText
android:layout_width="match_parent"
android:id="#+id/editTextComments"
android:hint="Comments here"
android:layout_gravity="fill_horizontal"
android:layout_height="wrap_content"
android:inputType="text"/>
</LinearLayout>
I'm not sure where the casting exception is caused or why exactly it happened. If anyone is able to help, I would appreciate it a lot! Thanks in advance!

Instead of getting the view by position getting it by id would be easier.
EditText editTextQ = (EditText) linearLayout.getChildAt(2);
EditText editTextC = (EditText) linearLayout.getChildAt(4);
Try this instead:
EditText editTextQ = (EditText) linearLayout.findViewById(R.id.editText1);
EditText editTextC = (EditText) linearLayout.findViewById(R.id.editTextComments);
This will be better because if change the xml, it could change view positions, and find views by id you wouldn't need to change the code.

Changing Text of CardsUI views

So im using this awesome Cards library (CardsUI) and trying to figure out how to insert my own text into these views grammatically. Im my main activity im parsing JSON data, now i want to use data from the JSON and insert the text into the Cards. Here is some code i have so far.
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_hello_enlighten);
// the id title is referencing the title in my card layout below
system_id = (TextView) findViewById(R.id.title);
system_name = (TextView) findViewById(R.id.system_name);
CardUI mCardView = (CardUI) findViewById(R.id.cardUI1);
mCardView.setSwipeable(false);
// add AndroidViews Cards
mCardView.addCard(new MyCard("Get the CardsUI view"));
mCardView.addCardToLastStack(new MyCard("for Android at"));
MyCard androidViewsCard = new MyCard("www.androidviews.net");
mCardView.addCardToLastStack(androidViewsCard);
// draw cards
mCardView.refresh();
// Here is my JSON Parsing activity.
new ProgressTask(WelcomeYou.this).execute();
}
My Card Layout
<?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="wrap_content"
android:orientation="vertical"
android:paddingBottom="16dp" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:paddingLeft="8dp"
android:paddingRight="8dp" >
<TextView
android:id="#+id/title"
style="#style/CardTitle"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="title" />
</LinearLayout>
<View
android:layout_width="fill_parent"
android:layout_height="1dp"
android:layout_marginTop="4dp"
android:background="#color/stroke" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/selectable_background_cardbank"
android:gravity="center_vertical"
android:padding="4dp" >
<TextView
android:id="#+id/description"
style="#style/CardText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:ellipsize="end"
android:maxLines="4"
android:text="description" />
</LinearLayout>
</LinearLayout>
Im simply trying to put text into the here mCardView.addCard(new MyCard("PUT JSON STRING HERE"));

I know this question was posted a while ago, but I'm just now using the CardUI and I've got it to work. I don't know what R.id.activity_hello_enlighten contains, but if you look at the example provided with their source, the layout from your activity should be using a CardUI component.
Code from the example layout:
<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" >
<com.fima.cardsui.views.CardUI
android:id="#+id/cardsview"
android:layout_width="match_parent"
android:layout_height="match_parent" />
Otherwise there's nothing actually doing your card rendering to the screen.
Once you do this, get a pointer to the CardUI referenced by your layout (in the example code it's called cardsview) with the following code:
mCardView = (CardUI) findViewById(R.id.cardsview);
After that, it's as simple as adding a new card like this:
mCardView.addCardToLastStack(new MyCard("Your card's text!"));

Dynamically adding TextView to ScrollView on Android

I try to make a ScrollView to act like a ListView. So every row will be a TextView added dynamically. but the program crashes. I have a ScrollView inside a LinearLayout. What i do wrong? Thanks.
Here is my code
scroll = (ScrollView)findViewById(R.id.scrollView1);
layout = (LinearLayout) findViewById(R.id.LinearLayout1);
layout.setBackgroundColor(Color.TRANSPARENT);
TextView[] tx = new TextView[10];
for (int i = 0; i < 10; i++) {
tx[i] = new TextView(HelloWorldActivity.this);
tx[i].setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
tx[i].setText("This is the textviewNo" + i);
layout.addView(tx[i]);
}
scroll.addView(layout);
XML:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/RelativeLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center_horizontal"
android:orientation="vertical" >
<TextView
android:id="#+id/timeflag"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textSize="50sp"
android:gravity="center"/>
<Button
android:id="#+id/pause"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_alignParentLeft="true"
android:layout_below="#+id/timeflag"
android:layout_marginTop="37dp"
android:text="Start" />
<LinearLayout
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_below="#+id/pause"
android:orientation="vertical" >
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ScrollView>
</LinearLayout>
</RelativeLayout>

A scrollView Can only have one child. If you try to add more than 1 child to the scroll view then it will crash. You should have the LinearLayout inside of the scrollview and then dynamically add textViews to the linear layout.

You are trying to add LinearLayout1 as its own child's child (being your own grandfather, is a confusing notion).
Change you XML around like this:
<ScrollView
android:id="#+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_below="#+id/pause"
>
<LinearLayout
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
</LinearLayout>
</ScrollView>

You cannot add views to a scrollview. You can only add them to a viewgroup, like linear or relativelayout.
It is not exactly clear what you are trying to achieve, but what is wrong with using a listview for this? You could set a max height on the listview. Or you could try wdziemia's suggestion

How to add fixed buttons above a ListView android?

I want to have two buttons top of a listview. If I scroll below the listview I want that the buttons stay at top. I searched through many solutions on stackoverflow however I could not find the exact one for my case.
My layout xml(mainlayout.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="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/latest_news_button" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/tracked_news_button" />
</LinearLayout>
<ListView
android:id="#+id/mylist"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
The graphical layout produced is just what I wanted:
Here is my code to use this layout, in case I might fail to bind the Java code to layout;
public class MainActivity extends ListActivity{
Button latestButton;
Button trackedButton;
ListView lv = null;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.mainlayout);
latestButton = (Button)findViewById(R.id.button1);
latestButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "Latest Button!", Toast.LENGTH_LONG).show();
}
});
trackedButton = (Button)findViewById(R.id.button2);
trackedButton.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(MainActivity.this, "Tracked Button!", Toast.LENGTH_LONG).show();
}
});
this.lv = getListView();
String[] values = new String[]{"asdfa","qwerqwer","banbn"};
lv.setAdapter(new ArrayAdapter<String>(BilTrackerMainActivity.this, android.R.layout.simple_expandable_list_item_1, values));
}
however when this activity is called from my other activity my app unfortunately closed. LogCat says:
Your content must have a ListView whose id attribute is 'android.R.id.list'
But I try adding lv = (ListView)findViewById(R.id.mylist); instead of this.lv = getListView();. I could not solve this issue.
I am aware of ListView#addHeaderView but I want to solve my particular problem with using this kind of layout.

Just change your listview id to android:id="#android:id/list"

Use a RelativeLayout. Place the second button to the right of the first button using layout_toRightOf then place the listview beneath button one using layout_below. Something like this (I haven't tested it, apologies for any typos)
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/latest_news_button" />
<Button
android:id="#+id/button2"
android:layout_toRightOf="#id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/tracked_news_button" />
<ListView
android:id="#+id/mylist"
android:layout_below="#id/button1"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</RelativeLayout>

Here is the xml you are looking for
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#FF394952">
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
style="#android:style/ButtonBar">
<Button
android:id="#+id/btn_AddMore"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/newItem"
android:textColor="#FF394952"/>
</LinearLayout>
<ListView
android:id="#+id/game_list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_weight="1.0" />
</LinearLayout>
And when you design Activity for this dont use List activity directly use Activity and set adapter on the ListView.
ListView lv = (ListView) findViewById(R.id.game_list);
ArrayAdapter<String> listItem = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, android.R.id.text1, ALBUM_NAME);
lv.setAdapter(listItem);
lv.setTextFilterEnabled(true);

Use below xml file for that
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:id="#+id/mLlayout1" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/latest_news_button" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="#string/tracked_news_button" />
</LinearLayout>
<ListView
android:id="#android:id/list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/mLlayout1" >
</ListView>
</RelativeLayout>

Create FrameLayout with [your ListView] and [LinearLayout with your buttons].
Do once something like this within onCreate()
LinearLayout myButtons = ...;
myButtons.bringToFront();
So, your ContentView will have a FrameLayout with two child, one of those is in foreground.
That's all. Hope it helped))

Using two listViews in one activity

I have made a list view containing two childs. Now i am trying to append a series of children to each of these two childs.
I am using following procedure.
super.onCreate(savedInstanceState);
setContentView(R.layout.report_main_layout);
CharSequence[] dummyChar = {"a","b"};
listView = (ListView) findViewById(R.id.UIMainAccountListView);
adapter = new CustomArrayAdapterOfMainList(this, dummyChar);
listView.setAdapter(adapter);
In the custom adapter i am using following code.
if (position == 0)
{
viewHolder.listView = (ListView) view.findViewById(R.id.UIReportTrialBalanceListView);
adapter = new CustomArrayAdapterForChildList(context, debitAccounts,sumDebit);
viewHolder.listView.setAdapter(adapter);
}
else
{
viewHolder.listView = (ListView) view.findViewById(R.id.UIReportTrialBalanceListView);
adapter = new CustomArrayAdapterForChildList(context, creditAccounts, sumCredit);
viewHolder.listView.setAdapter(adapter);
}
All i am getting is like this, I want to extend it so that all of the accounts show, List view should wrap content but it is not wrapping content

This will stack two listviews and force them to take up half of their parent each.
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:weightSum="2">
<ListView
android:id="#+id/list1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"/>
<ListView
android:id="#+id/list2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"/>
</LinearLayout>
You can remove the cache color by setting android:cacheColorHint="#android:color/transparent" for each listview

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:paddingBottom="20sp" >
<ListView
android:id="#+id/child1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<ListView
android:id="#+id/child2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/child1" />
</RelativeLayout>
This layout for first child1 listview above the second child2 listview
Thanks