I have a list of people that I am pulling from the database with a [modified] SimpleCursorAdapter. I then iterate over the cursor and print information out in a ListView in my app.
Right now, it is coded so that when I click on a row, my app performs a function based on information retrieved from the database. However, what I would like to do is make it so that when I click on an ImageView within the row, my app will perform the appropriate function based on information retrieved from the database.
What I want is when I click the "status" ImageView, I want it to perform function "A", and when I click the "location" ImageView, I want it to perform function "B".
Where I am having trouble is isolating the ImageView within the ListView row for using the setOnItemClickListener on just that ImageView instead of the entire row. I'm pretty sure I need to further modify my modified cursor adapter, but I am unsure of how.
Here is what I have:
Home.java
package myPackage;
public class Home extends Fragment {
private View rootView;
private AlternateRowColorSimpleCursorAdapter mySimpleCursorAdapter;
private ViewPager myViewPager;
private SwipeRefreshLayout studentSwipeRefresh;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
rootView = inflater.inflate(R.layout.home, container, false);
myViewPager = (ViewPager) getActivity().findViewById(R.id.pager);
studentSwipeRefresh = (SwipeRefreshLayout) rootView.findViewById(R.id.student_swipe_refresh);
return rootView;
}
@Override
public void onViewCreated(View rootView, Bundle savedInstanceState) {
super.onViewCreated(rootView, savedInstanceState);
drawTheStudentView();
studentSwipeRefresh.setColorSchemeColors(Color.parseColor(Constants.RED), Color.parseColor(Constants.ORANGE), Color.parseColor(Constants.YELLOW), Color.parseColor(Constants.GREEN), Color.parseColor(Constants.BLUE), Color.parseColor(Constants.INDIGO), Color.parseColor(Constants.VIOLET));
studentSwipeRefresh.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
studentSwipeRefresh.setRefreshing(false);
drawTheStudentView();
}
});
}
private void drawTheStudentView(){
DatabaseHelper myDBHelper = new DatabaseHelper(getActivity());
Cursor studentCursor = myDBHelper.getStudentsCursor();
String[] fromColumns = {"_id","studentID","status","location"};
int[] toViews = {R.id.student_number_textview, R.id.student_id_textview};
// What I want it to be ...
// int[] toViews = {R.id.student_number_textview, R.id.student_id_textview, R.id.student_status_imageview, R.id.student_location_imageview};
mySimpleCursorAdapter = new AlternateRowColorSimpleCursorAdapter(getActivity(), R.layout.student_layout, studentCursor, fromColumns, toViews, 0);
// Replace the _id column with a student count
mySimpleCursorAdapter.setViewBinder(new SimpleCursorAdapter.ViewBinder() {
@Override
public boolean setViewValue(View view, Cursor cursor, int columnIndex) {
String counter = Integer.toString((cursor.getPosition()+1));
TextView modifiedTextView = (TextView) view;
if(columnIndex == 0){
modifiedTextView.setText(counter);
return true;
}
return false;
}
});
ListView myListView = (ListView) rootView.findViewById(R.id.student_row);
// Listen for somebody clicking on a Student ID, and process
myListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Cursor subCursor = (Cursor) mySimpleCursorAdapter.getItem(position);
String studentIDNumber = subCursor.getString(subCursor.getColumnIndex("studentID"));
StudentStatus studentStatus = (StudentStatus) getFragmentManager().findFragmentByTag(getFragmentTag(Constants.TAB_INDEX_PATIENT_VITALS));
studentStatus.setStudentIDNumber(studentIDNumber);
myViewPager.setCurrentItem(Constants.TAB_INDEX_PATIENT_VITALS);
}
});
// Draw the list
myListView.setAdapter(mySimpleCursorAdapter);
myDBHelper.close();
}
// Pass me a tab index (see Constants.java) and I'll return a refrence to that tab.
private String getFragmentTag(int tagID){
return "android:switcher:" + R.id.pager + ":" + tagID;
}
}
AlternateRowColorSimpleCursorAdapter.java
package myPackage;
public class AlternateRowColorSimpleCursorAdapter extends SimpleCursorAdapter {
public AlternateRowColorSimpleCursorAdapter(Context context, int layout, Cursor c, String[] from, int[] to, int flags) {
super(context, layout, c, from, to, flags);
}
@Override
public View getView(int position, View convertView, ViewGroup parent){
View row = super.getView(position, convertView, parent);
if(position % 2 == 0){
row.setBackgroundColor(Color.parseColor(Constants.WHITE));
} else {
row.setBackgroundColor(Color.parseColor(Constants.LIGHTGREY));
}
return row;
}
}
student_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="match_parent">
<TextView
android:id="@+id/student_number_textview"
android:typeface="monospace"
android:layout_weight="1"
android:textStyle="bold"
style="@style/StudentStyle" />
<TextView
android:id="@+id/student_id_textview"
android:typeface="monospace"
style="@style/StudentStyle" />
<ImageView
android:id="@+id/student_status_button"
style="@style/studentIconLink"
android:src="@drawable/status_icon"/>
<ImageView
android:id="@+id/student_location_button"
style="@style/studentIconLink"
android:src="@drawable/location_icon"/>
</LinearLayout>
Modify your adapter to add click listeners:
public View getView(final int position, View convertView, ViewGroup parent){
// your code goes here, then add the following
ImageView statusButton = row.findViewById(R.id.student_status_button);
ImageView locationButton = row.findViewById(R.id. student_location_button);
OnClickListener statusButtonListener = new OnClickListener() {
@Override
public void onClick(View v) {
notifyStatusButtonListenerClicked(position);
}
};
OnClickListener locationButtonListener = new OnClickListener() {
@Override
public void onClick(View v) {
notifyLicationButtonListenerClicked(position);
}
};
return row;
}
Both notifications could be delivered to your activity/fragment through Interfaces. Simply add methods like notifyLicationButtonListenerClicked(int position) that would call a method on a listener that implements your interface. Also make sure you remove the existing setOnItemClickListener listener that you set per row.