Hi,
Having a problem with an image adapter. What I am trying to do is
get a list
of all the installed apps on my phone, display their icons and name,
all in a grid
with 4 columns.
On first look all seems well but I see duplicates in apparently
random locations
and when I scroll back to the beginning the content of the rows has
changed! I cannot
ascertain any specific pattern. Either whole rows have moved, or
the order of a
specific row has changed, or there are single duplicates on the
screen.
Here is the XML and code:
layout_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/
android"
android:layout_width="wrap_content"
android:gravity="center_vertical"
android:layout_height="fill_parent">
<GridView android:id="@+id/GridView"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:numColumns="4">
</GridView>
</LinearLayout>
layout_row.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/
android"
android:id="@+id/main_layout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView android:id="@+id/icon_image" android:layout_width="40dp"
android:layout_marginLeft="20dp"
android:paddingLeft="1px"
android:gravity="right"
android:layout_height="40dp">
</ImageView>
<TextView android:id="@+id/icon_text" android:layout_width="78dp"
android:layout_marginBottom="5dp"
android:layout_height="32dp" android:text="TextView"
android:gravity="center|top"
android:textColorHighlight="#ffffff">
</TextView>
</LinearLayout>
Code
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mPackageManager = getPackageManager();
setContentView(R.layout.layout_main);
List<PackageInfo> installedPackages =
mPackageManager.getInstalledPackages(0);
grid = (GridView) findViewById(R.id.GridView);
grid.setAdapter(new ImageAdapter(mainActivity.this,
installedPackages, installedPackages.size()));
}
public class ImageAdapter extends BaseAdapter {
Context context;
List<PackageInfo> list;
int maxsize;
public ImageAdapter(Context argContext, List<PackageInfo>
argPackageInfo, int argMaxsize) {
context = argContext;
list = argPackageInfo;
maxsize = argMaxsize;
}
@Override
public int getCount() {
return maxsize;
}
@Override
public View getView(final int position, View convertView, ViewGroup
parent) {
View view;
try {
if (convertView == null) {
LayoutInflater inflater = getLayoutInflater();
view = inflater.inflate(R.layout.layout_row,
null);
TextView textview = (TextView)
view.findViewById(R.id.icon_text);
textview.setTextSize(13f);
textview.setTextColor(0xffffffff);
textview.setText(mPackageManager.getApplicationLabel(list.get(position).applicationInfo));
ImageView imageview = (ImageView)
view.findViewById(R.id.icon_image);
imageview.setScaleType(ImageView.ScaleType.FIT_CENTER);
imageview.setImageDrawable(mPackageManager.getApplicationIcon((list.get(position).applicationInfo)));
} else {
view = convertView;
}
return view;
} catch (Exception e) {
}
return view = convertView;
}
@Override
public Object getItem(int position) {
return position;
}
//@Override
public long getItemId(int position) {
return position;
}
}
Any ideas or thoughts would be appreciated.
Kent
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