Why are ViewPager and GridLayout with 30 Elements very slow?

I have a `ViewPager` and a `GridView` to show a monthly calendar. The `GridView` has about 30 elements and swipe to left and right is very slow. I made a sample project to test without any database access and it is slow, too. Maybe someone sees the problem or do I have to make an asynchronous load of the pages? That is the layout for one element in the `GridView`. I want to show 9 little 5x5 pixel icons in any element, but without them, it is slow, too. ``` <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/Layout1" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:padding="1dp"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content"> <TextView android:id="@+id/date" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_marginLeft="5dp" android:gravity="center_vertical" android:textSize="14sp" android:textStyle="bold"/> </LinearLayout> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#ffffff"> <ImageView android:id="@+id/dot1" android:layout_width="wrap_content" android:drawingCacheQuality="auto" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:background="#ffffff" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:paddingBottom="1dp" android:paddingLeft="1dp" android:paddingTop="5dp"/> </RelativeLayout> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#ffffff"> <ImageView android:id="@+id/dot2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:background="#ffffff" android:paddingBottom="1dp" android:paddingLeft="1dp"/> </RelativeLayout> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#ffffff"> <ImageView android:id="@+id/dot3" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:layout_gravity="right" android:background="#ffffff" android:paddingBottom="1dp" android:paddingLeft="1dp"/> </RelativeLayout> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#ffffff"> <ImageView android:id="@+id/dot4" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:layout_gravity="center_horizontal" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:background="#ffffff" android:paddingBottom="1dp" android:paddingLeft="1dp"/> </RelativeLayout> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#ffffff"> <ImageView android:id="@+id/dot5" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:layout_gravity="left" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:background="#ffffff" android:paddingBottom="1dp" android:paddingLeft="1dp"/> </RelativeLayout> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#ffffff"> <ImageView android:id="@+id/dot6" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:layout_gravity="left" android:background="#ffffff" android:paddingBottom="1dp" android:paddingLeft="1dp"/> </RelativeLayout> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#ffffff"> <ImageView android:id="@+id/dot7" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:layout_gravity="left" android:background="#ffffff" android:paddingBottom="1dp" android:paddingLeft="1dp"/> </RelativeLayout> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#ffffff"> <ImageView android:id="@+id/dot8" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:layout_gravity="left" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:background="#ffffff" android:paddingBottom="1dp" android:paddingLeft="1dp"/> </RelativeLayout> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#ffffff"> <ImageView android:id="@+id/dot9" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:layout_alignParentLeft="true" android:layout_alignParentTop="true" android:layout_gravity="left" android:background="#ffffff" android:paddingBottom="5dp" android:paddingLeft="1dp"/> </RelativeLayout> </LinearLayout> ``` That's the `instantiateItem` of `GridView` adapter: ``` public Object instantiateItem(ViewGroup container, int position) { GridView gv = new GridView(m_context); gv.setAdapter(new BaseAdapter() { @Override public View getView(int pos, View convertView, ViewGroup parent) { View v; if (convertView == null) { // if it's not recycled, initialize some attributes v = mInflater.inflate(R.layout.calendar_month_item, null); } else { v = convertView; } TextView dayView = (TextView) v.findViewById(R.id.date); dayView.setText(pos + ""); return v; } @Override public long getItemId(int p) { return 0; } @Override public Object getItem(int p) { return null; } @Override public int getCount() { return 30; } }); gv.setNumColumns(5); ((ViewPager) container).addView(gv); return gv; } ```