Android - The listview doesn't appears while running in emulator

So my XML looks like this:

<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_

I'm trying to draw a diagonal line in an Android app with the XML, but it is not working.

How can i set the image view height here. I want an image to be shown and the width has to fit the screen, but the height has to be automatically chosen.

I searched other topics and came to the conclusion that my listview was the cause of the null pointer exception but i cant figure anyway to fix it.

here is my XML file

<?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" >

I have the following XML file containing only a ListView

<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" >

<ListView android:id="@+id/lview" android:layout_width="fill_parent" android:layout_height="wrap_conten

I have List view in layout

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:weightSum="100" >

<ListView android:id="@+id/listInbox" android:layout_width="fill_parent" android:layout_height="fill_parent" an

I have a long form and when the soft keyboard appear I can't see the bottom editTexts

This is my xml

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" >

<RelativeLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:paddingBottom="@dimen/activity_vert

Please have a look at the following code

<TableLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/tableLayout1" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#FFF" android:gravity="right" android:padding="5dp" android:paddingBottom="5dp"

Like we all know in Android whenever we use ListView it automatically scrolls, In my program i am using ListView with Bottom Tabs and what i have seen it has stopped scrolling, because without usage of Bottom Tabs i was able to scroll my ListView.

For Bottom Tabs, i am using this: https://github.com/AdilSoomro/Iphone-Tab-in-Android

viewcartactivity.xml:

<RelativeLayout xmlns:android="http