I got a list in my main but problem is that when I scan the barcodes for more than 15 barcodes, then it didn't show the"scan" button already and I tried to use the scroll view for that but it is not working :
Any helps?
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:fillViewport="true">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/hello" />
<ListView
android:id="#android:id/list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView
android:id="#android:id/empty"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="no notes"
/>
<Button
android:id="#+id/button"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="20dp"
android:text="scan"/>
</LinearLayout>
</ScrollView>
Any suggestions?
Generally it is a bad idea to place a listview inside of the scrollview. It doesn't work as expected. See the following post:
https://groups.google.com/forum/?fromgroups#!topic/android-beginners/LRpLgGOy2Pc
In Android it's not possible to use a ListView in a ScrollView. In order to achieve the same result you can use a ListView and add a header and a footer.
addHeaderView()
You can use a ListActivity. Create one xml layout file for your header and add it to the ListView: (put the Code in your onCreate() function before calling setAdapter())
LayoutInflater inflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
getListView().addHeaderView(inflater.inflate(R.layout.header, null));
getListView().addFooterView(inflater.inflate(R.layout.footer, null));
The footer works exactly the same way.
Hi, you can use RelativeLayout instead of LinearLayout.
In such case you should place your button at the bottom of the layout. After that other controls should be placed above the button. RelativeLayout has special xml-attributes to help you do this. After that you do not need a ScrollView.
Related
I want a bouncable scrollview (iPhone like) in my project. I find some articles about overscroll and use it like This class here. But i dont know how to set over scroll view as its header.
I also tried adding a view simply before my custom scroll view but it didn't work (codes at the end).
I need a view attached to scrollview how can i do this? any idea will be grateful.
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:background="#FF8080"
>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
<com.amix.tstsrc.MyScrollView
android:id="#+id/my_scrollView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#8585FF">
<TextView
android:id="#+id/help_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#android:color/white" />
</LinearLayout>
</com.amix.tstsrc.MyScrollView>
Please go through https://github.com/Larphoid/android-Overscroll-ListView. I hope this is what you are looking for.
In case you want scrollview with header where header stays and the list scrolls and bounces then try to go for listview by using addHeaderView instead of Scrollview.
I have a linearlayout with 3 imageView and a listview in vertical orientation.i want to scroll the full screen including the images when the user scrolls the list.is that possible?thanks
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#222222"
android:orientation="vertical" >
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/ph2" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/ph1" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/ph2" />
<ListView
android:id="#+id/ll4_list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="0.5"
android:cacheColorHint="#00000000" />
</ScrollView>
You definitely don't want to put the ListView inside of the ScrollView, but it's certainly possible to include the images. I would recommend considering putting the layout with the images in a header to the ListView. See addHeaderView. This related SO post may also be of use to you.
You should search api , the scrollView can not be inner more than one child , must has one direct child
I need to add a button at the end of my application, without the items covering the button. With my current code the button is being covered by the items in the ListView. I wanna be able to scroll through the ListView and see all the items, without the button being covered with them. I need button with id "bSave" below the Listview. My XML code:
Button
<LinearLayout android:layout_width="match_parent"
android:layout_height="wrap_content" android:orientation="vertical"
android:id="#+id/bottom_control_bar"
android:layout_alignParentBottom="true">
<Button android:layout_width="match_parent"
android:layout_height="wrap_content" android:text="Spara total tid"
android:id="#+id/bSave" android:textStyle="bold"
android:visibility="invisible"></Button>
</LinearLayout>
ListView
<RelativeLayout
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ListView android:id="#android:id/list"
android:layout_width="fill_parent" android:layout_height="wrap_content"
android:layout_above="#id/bottom_control_bar"></ListView>
<TextView android:id="#android:id/empty"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
Do you want the button to always be visible, or to only be visible once you read the end of the list? If the former, then you use something like a relativelayout with a footer button set to alignparentbottom and below the listview. If the latter, then call listview.addFooterView, passing in whatever view you'd like.
Try using a ScrollView http://developer.android.com/reference/android/widget/ScrollView.html
<LinearLayout>
<ScrollView>
</ScrollView>
<Button>
</Button>
</LinearLayout>
I have a scrollview with a linear layout in it. Within that linear layout there is a list view. The problem I am having is that my list view only has a certain amount of space and then becomes scrollable. I don't want this to happen. I want the entire list to be shown. Does anyone know how I might achieve this? I have tried using this link however my layout does not appear when I add the footer. ListView in ScrollView potential workaround This is my code:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/ScrollView01"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:baselineAligned="true"
android:orientation="vertical"
android:background="#drawable/darkimg"
android:weightSum="1">
<LinearLayout
android:id="#+id/numbersLL"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:background="#drawable/round_rectangle"
android:layout_margin="4px"
android:paddingLeft="6px"
android:paddingTop="3px">
<TextView
android:id="#+id/numberPrint"
android:layout_height="wrap_content"
android:textSize="14px"
android:textStyle="bold"
android:textColor="#color/white"
android:layout_width="fill_parent"
android:text="#string/numberPrint">
</TextView>
<ListView
android:id="#+id/numberListView"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1"></ListView>
</LinearLayout>
</LinearLayout>
</ScrollView>
This is my footer:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/formLL">
<TextView
android:id="#+id/numberFormTextViewt"
android:layout_gravity="center_vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textSize="20px"
android:text="Add a number:"
android:textColor="#color/white" />
<Button
android:id="#+id/numberFormButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/ic_add"></Button>
</LinearLayout>
And this is the Java code to add the footer to the list:
LayoutInflater factory = getLayoutInflater();
LinearLayout numberFooter = (LinearLayout) factory.inflate(R.layout.number_form, null);
// List of numbers
numberListView = (ListView) this.findViewById(R.id.numberListView);
numberListView.addFooterView(numberFooter);
What is going wrong here? The footer does not appear when the activity is displayed. One thing I should mention is the footer is used to add items to the list above it. I'm not sure if that makes a difference but when I am testing this the list adapter is empty. Even still should the footer show up anyway? Any help would be appreciated thanks.
List view under scroll view is not working(means List view is not scrollable).
So u can put empty Linear Layout instead of List view in ur xml file. In ur code, first u can get the list view size, based on this size value, for loop can rotated. In that for loop u can call the get view method of the adapter class(that class is not extending any class.) this will solve the list view problem.
try this in your listview:
android:layout_height="fill_parent"
I'm having issues with a ListView using custom rows that are loaded from a database.
If, for the list screen, I place a button above the ListView, no visible rows appear in the listview.
However as soon as I remove the button, everything works fine. I want the button (or any other component) to appear above to make it more user friendly. Attached are the two code samples below.
This is the XML file of the ListView Activity that works:
<?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="#color/real_red_dark">
<LinearLayout
android:id="#+id/llMain"
android:layout_height="fill_parent"
android:background="#drawable/real_background"
android:layout_width="fill_parent"
android:layout_gravity="center"
android:gravity="center">
<ListView
android:id="#+android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_below="#+id/llButton"
android:layout_alignParentLeft="true" />
<TextView
android:id="#+android:id/empty"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="#string/no_sessions"
android:textStyle="bold"
android:textSize="18dp"
android:gravity="center"/>
</LinearLayout>
</LinearLayout>
However, if I have the Button added above it, it will not show whatsoever:
<?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="#color/real_red_dark">
<LinearLayout
android:id="#+id/llMain"
android:layout_height="fill_parent"
android:background="#drawable/real_background"
android:layout_width="fill_parent"
android:layout_gravity="center"
android:gravity="center">
<Button
android:id="#+id/btnSearch"
android:layout_width="fill_parent"
android:layout_height="35dip"
android:layout_gravity="center_horizontal"
android:layout_marginTop="3dip"
android:layout_marginLeft="15dip"
android:layout_marginRight="15dip"
android:text="Find Sessions"
android:textStyle="bold" />
<ListView
android:id="#+android:id/list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_below="#+id/llButton"
android:layout_alignParentLeft="true" />
<TextView
android:id="#+android:id/empty"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="#string/no_sessions"
android:textStyle="bold"
android:textSize="18dp"
android:gravity="center"/>
</LinearLayout>
</LinearLayout>
You could try adding the button programmatically as a header view in the listview itself, rather than in the xml layout.
use listView.addHeaderView(View)
http://developer.android.com/reference/android/widget/ListView.html#addHeaderView(android.view.View)
It is better if you use RelativeLayout than LinearLayout,it is also recommended by the android docs.Try to use android:layout_height value as "wrap_content" for ListView and TextView(which you may use to indicate for empty rows),it may help to you.
Something which doesn't look right but I'm assuming it's just a typo in the above...
android:id="#+android:id/list"
...there shouldn't be a + between # and android:. Using #+ is for adding a new resource id of your own, i.e., #+id:. You're also doing the same thing for the TextView...
android:id="#+android:id/empty"
Another thing but not sure it's relevant is you're specifying...
android:layout_below="#+id/llButton"
...I doubt it's the problem as android:layout_below isn't valid for a LinearLayout (it's for RelativeLayout) but there isn't a Button with the id of llButton in your layout. If there was, the + would also be incorrect as you should be specifying an existing id.
Not sure if amending the above would fix things but it could just be that the layout inflation is coming out 'wrong' due to those issues.