https://github.com/rtyley/android-viewholder-listviews

A small framework to make using the 'ViewHolder' pattern a bit clearer
https://github.com/rtyley/android-viewholder-listviews

Last synced: 23 days ago
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A small framework to make using the 'ViewHolder' pattern a bit clearer

• Host: GitHub
• URL: https://github.com/rtyley/android-viewholder-listviews
• Owner: rtyley
• Created: 2011-04-13T12:59:14.000Z (over 13 years ago)
• Default Branch: master
• Last Pushed: 2020-10-12T19:54:23.000Z (about 4 years ago)
• Last Synced: 2024-10-13T14:35:17.203Z (about 1 month ago)
• Language: Java
• Homepage:
• Size: 44.9 KB
• Stars: 33
• Watchers: 5
• Forks: 10
• Open Issues: 2
• Metadata Files:
  • Readme: README.md

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README

        
The aim is to reduce the boilerplate around writing your own ListAdapter class. With the library, you define two smaller classes, a 

ViewHolderFactory and a ViewHolder implementation.

Here's how you would set the adapter on your listView:

```java

listView.setAdapter(new ViewHoldingListAdapter(fooList, viewInflatorFor(context, foo_list_item), new ViewHolderFactory() {

    public ViewHolder createViewHolderFor(View view) {

	return new FooViewHolder(view);

    }

}));

```

Your FooViewHolder just does the job of the ViewHolder - holds the references to the required Views, and populates those views with the relevant

fields from you Foo:

```java

public class FooViewHolder implements ViewHolder {

    private final TextView fooName,fooDate;

    private final ImageView icon;

    public FooViewHolder(View v) {

	this.avatarSession = avatarSession;

	fooName = (TextView) v.findViewById(R.id.foo_item_name);

	fooDate = (TextView) v.findViewById(R.id.foo_item_date);

	icon = (ImageView) v.findViewById(R.id.foo_item_icon);

    }

    public void updateViewFor(Foo foo) {

	fooName.setText(foo.getName());

	fooDate.setText(foo.getTimeString());

	icon.setImageDrawable(iconBitmap);

    }

}

```