xamarin android gridview mess up after scrolling
i'm new to Xamarin android(which is very similar to android). I created a Gridview having images(from google images) with title the images stored in local db as a blob. when i scrolling it down its totally messing up. Here my code
activity_main.xml
<?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="match_parent"
android:minWidth="25px"
android:minHeight="25px">
<android.support.design.widget.TabLayout
android:id="@+id/tablayout_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#A5BFB6"
android:layout_alignParentTop="true"
android:elevation="6dp"
android:minHeight="?attr/actionBarSize"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="2dp" />
</LinearLayout>
album1_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:fab="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/album_frame_layout">
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/albumsGridView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="100dp"
android:numColumns="2"
android:stretchMode="columnWidth"
android:gravity="center"
/>
</FrameLayout>
album_adapter.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp">
<ImageView
android:id="@+id/albumImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10px"
android:layout_gravity="center" />
<TextView
android:id="@+id/albumName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="trebuchet"
android:textSize="15sp"
android:lines="2"
android:layout_marginTop="5px"
android:textStyle="bold" />
</LinearLayout>
AlbumAdapter.cs
public class AlbumAdapter : BaseAdapter<Albums>
{
public List<Albums> albumData;
public List<Albums> _items;
Activity context;
public AlbumAdapter(Activity context, IEnumerable<Albums> albumData)
{
_items = albumData.OrderBy(s => s.AlbumName).ToList();
this.context = context;
}
public override Albums this[int position]
{
get
{
return _items[position];
}
}
public override int Count
{
get
{
return _items.Count;
}
}
public override long GetItemId(int position)
{
return position;
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
var view = convertView;
var albums = _items[position];
AlbumHolder holder;
if (view == null)
{
view = LayoutInflater.From(parent.Context).Inflate(Resource.Layout.album_gridview_adapter, parent, false);
var albumImage = view.FindViewById<ImageView>(Resource.Id.albumImageView);
var albumName = view.FindViewById<TextView>(Resource.Id.albumName);
albumName.SetTextColor(Color.Black);
view.Tag = new AlbumHolder()
{
AlbumCover = albumImage,
AlbumName = albumName
};
holder = (AlbumHolder)view.Tag;
holder.AlbumCover.SetImageBitmap(ByteArrayToImageSourceConverter.ImageConverter(_items[position].AlbumCover));
holder.AlbumName.Text = _items[position].AlbumName;
}
else
{
holder = (AlbumHolder)view.Tag;
}
return view;
}
}
ByteArrayToImageSourceConverter : to convert byte data into bitmap
public static class ByteArrayToImageSourceConverter
{
public static Bitmap ImageConverter(byte albumImage)
{
Bitmap bitmap = BitmapFactory.DecodeByteArray(albumImage, 0, albumImage.Length);
return bitmap;
}
}
here the output:
screen shot of my app
and how the above screen to convert like this:
screen shot of music player
Here the project source:https://github.com/udayoleti/XAMARIN
thanks in advance.
android xamarin xamarin.android android-gridview
add a comment |
i'm new to Xamarin android(which is very similar to android). I created a Gridview having images(from google images) with title the images stored in local db as a blob. when i scrolling it down its totally messing up. Here my code
activity_main.xml
<?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="match_parent"
android:minWidth="25px"
android:minHeight="25px">
<android.support.design.widget.TabLayout
android:id="@+id/tablayout_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#A5BFB6"
android:layout_alignParentTop="true"
android:elevation="6dp"
android:minHeight="?attr/actionBarSize"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="2dp" />
</LinearLayout>
album1_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:fab="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/album_frame_layout">
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/albumsGridView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="100dp"
android:numColumns="2"
android:stretchMode="columnWidth"
android:gravity="center"
/>
</FrameLayout>
album_adapter.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp">
<ImageView
android:id="@+id/albumImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10px"
android:layout_gravity="center" />
<TextView
android:id="@+id/albumName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="trebuchet"
android:textSize="15sp"
android:lines="2"
android:layout_marginTop="5px"
android:textStyle="bold" />
</LinearLayout>
AlbumAdapter.cs
public class AlbumAdapter : BaseAdapter<Albums>
{
public List<Albums> albumData;
public List<Albums> _items;
Activity context;
public AlbumAdapter(Activity context, IEnumerable<Albums> albumData)
{
_items = albumData.OrderBy(s => s.AlbumName).ToList();
this.context = context;
}
public override Albums this[int position]
{
get
{
return _items[position];
}
}
public override int Count
{
get
{
return _items.Count;
}
}
public override long GetItemId(int position)
{
return position;
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
var view = convertView;
var albums = _items[position];
AlbumHolder holder;
if (view == null)
{
view = LayoutInflater.From(parent.Context).Inflate(Resource.Layout.album_gridview_adapter, parent, false);
var albumImage = view.FindViewById<ImageView>(Resource.Id.albumImageView);
var albumName = view.FindViewById<TextView>(Resource.Id.albumName);
albumName.SetTextColor(Color.Black);
view.Tag = new AlbumHolder()
{
AlbumCover = albumImage,
AlbumName = albumName
};
holder = (AlbumHolder)view.Tag;
holder.AlbumCover.SetImageBitmap(ByteArrayToImageSourceConverter.ImageConverter(_items[position].AlbumCover));
holder.AlbumName.Text = _items[position].AlbumName;
}
else
{
holder = (AlbumHolder)view.Tag;
}
return view;
}
}
ByteArrayToImageSourceConverter : to convert byte data into bitmap
public static class ByteArrayToImageSourceConverter
{
public static Bitmap ImageConverter(byte albumImage)
{
Bitmap bitmap = BitmapFactory.DecodeByteArray(albumImage, 0, albumImage.Length);
return bitmap;
}
}
here the output:
screen shot of my app
and how the above screen to convert like this:
screen shot of music player
Here the project source:https://github.com/udayoleti/XAMARIN
thanks in advance.
android xamarin xamarin.android android-gridview
You are fetching instance of few controls incorrectly.var albumImage = view..
this should beholder.AlbumName=view...
. If you are getting instances outside of holder than no meaning of using holder class. EvenalbumName.SetTextColor
this should beholder.albumName.SetTextColor
.
– CGPA6.4
Nov 23 '18 at 9:28
add a comment |
i'm new to Xamarin android(which is very similar to android). I created a Gridview having images(from google images) with title the images stored in local db as a blob. when i scrolling it down its totally messing up. Here my code
activity_main.xml
<?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="match_parent"
android:minWidth="25px"
android:minHeight="25px">
<android.support.design.widget.TabLayout
android:id="@+id/tablayout_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#A5BFB6"
android:layout_alignParentTop="true"
android:elevation="6dp"
android:minHeight="?attr/actionBarSize"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="2dp" />
</LinearLayout>
album1_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:fab="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/album_frame_layout">
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/albumsGridView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="100dp"
android:numColumns="2"
android:stretchMode="columnWidth"
android:gravity="center"
/>
</FrameLayout>
album_adapter.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp">
<ImageView
android:id="@+id/albumImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10px"
android:layout_gravity="center" />
<TextView
android:id="@+id/albumName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="trebuchet"
android:textSize="15sp"
android:lines="2"
android:layout_marginTop="5px"
android:textStyle="bold" />
</LinearLayout>
AlbumAdapter.cs
public class AlbumAdapter : BaseAdapter<Albums>
{
public List<Albums> albumData;
public List<Albums> _items;
Activity context;
public AlbumAdapter(Activity context, IEnumerable<Albums> albumData)
{
_items = albumData.OrderBy(s => s.AlbumName).ToList();
this.context = context;
}
public override Albums this[int position]
{
get
{
return _items[position];
}
}
public override int Count
{
get
{
return _items.Count;
}
}
public override long GetItemId(int position)
{
return position;
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
var view = convertView;
var albums = _items[position];
AlbumHolder holder;
if (view == null)
{
view = LayoutInflater.From(parent.Context).Inflate(Resource.Layout.album_gridview_adapter, parent, false);
var albumImage = view.FindViewById<ImageView>(Resource.Id.albumImageView);
var albumName = view.FindViewById<TextView>(Resource.Id.albumName);
albumName.SetTextColor(Color.Black);
view.Tag = new AlbumHolder()
{
AlbumCover = albumImage,
AlbumName = albumName
};
holder = (AlbumHolder)view.Tag;
holder.AlbumCover.SetImageBitmap(ByteArrayToImageSourceConverter.ImageConverter(_items[position].AlbumCover));
holder.AlbumName.Text = _items[position].AlbumName;
}
else
{
holder = (AlbumHolder)view.Tag;
}
return view;
}
}
ByteArrayToImageSourceConverter : to convert byte data into bitmap
public static class ByteArrayToImageSourceConverter
{
public static Bitmap ImageConverter(byte albumImage)
{
Bitmap bitmap = BitmapFactory.DecodeByteArray(albumImage, 0, albumImage.Length);
return bitmap;
}
}
here the output:
screen shot of my app
and how the above screen to convert like this:
screen shot of music player
Here the project source:https://github.com/udayoleti/XAMARIN
thanks in advance.
android xamarin xamarin.android android-gridview
i'm new to Xamarin android(which is very similar to android). I created a Gridview having images(from google images) with title the images stored in local db as a blob. when i scrolling it down its totally messing up. Here my code
activity_main.xml
<?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="match_parent"
android:minWidth="25px"
android:minHeight="25px">
<android.support.design.widget.TabLayout
android:id="@+id/tablayout_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#A5BFB6"
android:layout_alignParentTop="true"
android:elevation="6dp"
android:minHeight="?attr/actionBarSize"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="2dp" />
</LinearLayout>
album1_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:fab="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/album_frame_layout">
<GridView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/albumsGridView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:columnWidth="100dp"
android:numColumns="2"
android:stretchMode="columnWidth"
android:gravity="center"
/>
</FrameLayout>
album_adapter.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="5dp">
<ImageView
android:id="@+id/albumImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10px"
android:layout_gravity="center" />
<TextView
android:id="@+id/albumName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:fontFamily="trebuchet"
android:textSize="15sp"
android:lines="2"
android:layout_marginTop="5px"
android:textStyle="bold" />
</LinearLayout>
AlbumAdapter.cs
public class AlbumAdapter : BaseAdapter<Albums>
{
public List<Albums> albumData;
public List<Albums> _items;
Activity context;
public AlbumAdapter(Activity context, IEnumerable<Albums> albumData)
{
_items = albumData.OrderBy(s => s.AlbumName).ToList();
this.context = context;
}
public override Albums this[int position]
{
get
{
return _items[position];
}
}
public override int Count
{
get
{
return _items.Count;
}
}
public override long GetItemId(int position)
{
return position;
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
var view = convertView;
var albums = _items[position];
AlbumHolder holder;
if (view == null)
{
view = LayoutInflater.From(parent.Context).Inflate(Resource.Layout.album_gridview_adapter, parent, false);
var albumImage = view.FindViewById<ImageView>(Resource.Id.albumImageView);
var albumName = view.FindViewById<TextView>(Resource.Id.albumName);
albumName.SetTextColor(Color.Black);
view.Tag = new AlbumHolder()
{
AlbumCover = albumImage,
AlbumName = albumName
};
holder = (AlbumHolder)view.Tag;
holder.AlbumCover.SetImageBitmap(ByteArrayToImageSourceConverter.ImageConverter(_items[position].AlbumCover));
holder.AlbumName.Text = _items[position].AlbumName;
}
else
{
holder = (AlbumHolder)view.Tag;
}
return view;
}
}
ByteArrayToImageSourceConverter : to convert byte data into bitmap
public static class ByteArrayToImageSourceConverter
{
public static Bitmap ImageConverter(byte albumImage)
{
Bitmap bitmap = BitmapFactory.DecodeByteArray(albumImage, 0, albumImage.Length);
return bitmap;
}
}
here the output:
screen shot of my app
and how the above screen to convert like this:
screen shot of music player
Here the project source:https://github.com/udayoleti/XAMARIN
thanks in advance.
android xamarin xamarin.android android-gridview
android xamarin xamarin.android android-gridview
edited Nov 23 '18 at 9:30
CGPA6.4
2,57621029
2,57621029
asked Nov 22 '18 at 17:59
Uday OletiUday Oleti
33
33
You are fetching instance of few controls incorrectly.var albumImage = view..
this should beholder.AlbumName=view...
. If you are getting instances outside of holder than no meaning of using holder class. EvenalbumName.SetTextColor
this should beholder.albumName.SetTextColor
.
– CGPA6.4
Nov 23 '18 at 9:28
add a comment |
You are fetching instance of few controls incorrectly.var albumImage = view..
this should beholder.AlbumName=view...
. If you are getting instances outside of holder than no meaning of using holder class. EvenalbumName.SetTextColor
this should beholder.albumName.SetTextColor
.
– CGPA6.4
Nov 23 '18 at 9:28
You are fetching instance of few controls incorrectly.
var albumImage = view..
this should be holder.AlbumName=view...
. If you are getting instances outside of holder than no meaning of using holder class. Even albumName.SetTextColor
this should be holder.albumName.SetTextColor
.– CGPA6.4
Nov 23 '18 at 9:28
You are fetching instance of few controls incorrectly.
var albumImage = view..
this should be holder.AlbumName=view...
. If you are getting instances outside of holder than no meaning of using holder class. Even albumName.SetTextColor
this should be holder.albumName.SetTextColor
.– CGPA6.4
Nov 23 '18 at 9:28
add a comment |
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You are fetching instance of few controls incorrectly.
var albumImage = view..
this should beholder.AlbumName=view...
. If you are getting instances outside of holder than no meaning of using holder class. EvenalbumName.SetTextColor
this should beholder.albumName.SetTextColor
.– CGPA6.4
Nov 23 '18 at 9:28