I've had a look around, and it might be because I'm not sure what I'm looking for, but I can't find out how to do something I presume should be quite easy with android.
I have an array of data to display on the screen. This data is a class that holds a database key, name and image.
I'm currently displaying this data as an ImageView and a TextView. I loop through the array and add a new row to a TableLayout containing the image and text.
I'd like both the image and text to be clickable, changing to a new activity.
This new activity needs to know the database key of the row clicked in order to display the correct data.
Here's what I have so far:
private void fillSuggestionTable(TableLayout tabSuggestions, Suggestion[] arrToAdd)
{
for(int i = 0; i < arrToAdd.length; i++)
{
/* Create a new row to be added. */
TableRow trSuggestion = new TableRow(this);
trSuggestion.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));
/* Create objects for the row-content. */
ImageView imgDisplayPicture = new ImageView(this);
ImageHandler.loadBitmap(arrToAdd[i].strImageURL, imgDisplayPicture);
imgDisplayPicture.setLayoutParams(new LayoutParams(50,50));
TextView txtArtistName = new TextView(this);
txtArtistName.setText(arrToAdd[i].strName);
txtArtistName.setTextColor(Color.parseColor("#000000"));
/* Add data to row. */
trSuggestion.addView(imgDisplayPicture);
trSuggestion.addView(txtArtistName);
/* Add row to TableLayout. */
tabSuggestions.addView(trSuggestion, new TableLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
}
}
Is there a reason you're using a TableView? it seems like what you want to accomplish would be much easier with a ListView & custom CursorAdapter, where the adapter can handle translating from the database to the ListView row. At that point starting a new activity that knows the database ID is trivial:
mListView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick (AdapterView<?> parent, View view, int position, long id) {
Intent i = new Intent(MyActivity.this, MyOtherActivity.class);
i.putExtra("database_id", id);
startActivity(i);
}
});
And in MyOtherActivity:
private int dbId;
protected void onCreate(Bundle savedInstanceState) {
//do stuff
dbId = getIntent().getIntExtra("database_id", -1); // the -1 is the default if the extra can't be found
}
To pass extra data to another Activity, you need to add extra information with the Intent.putExtra(name, value) methods.
For example, to send the Intent:
Intent i = new Intent([pass info about next Activity here]);
i.putExtra("databaseKey", databaseKey);
startActivity(i);
To get the data out again:
public void onCreate(Bundle savedInstance)
{
// Do all initial setup here
Bundle extras = getIntent().getExtras();
if (extras != null && extras.containsKey("databaseKey"))
{
int databaseKey = extras.getInt("databaseKey");
// Load database info
}
else
{
// No data was passed, do something else
}
}
EDIT: To find out when the table's row is clicked, you'll need to implement View.OnClickListener and set the onClickListener for the TableRows you use.
For example:
/* Create a new row to be added. */
TableRow trSuggestion = new TableRow(this);
trSuggestion.setOnClickListener([listener]);
The only problem you'll have is relating a View's ID to the related database row ID. A HashMap should help.
This is a pretty simple procedure. This blog explains it in simple terms.
view.setTag(Object)
, then retrieve it using view.getTag()
- Jason Robinson 2012-04-05 18:40
I presume id would be the id of the itme in the list? So when I fill the ListView as long as I set the id for the list item to the database key, then I can get the id out easily - Tom.Bowen89 2012-04-05 18:29