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tyvsmith/App.java

Last active Aug 29, 2015
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Android ListAdapter using custom ViewGroup over ViewHolder pattern
package com.example.app;
public class App {
public String id;
public String name;
public String icon_url;
@Override
public String toString() {
return name;
}
}
<?xml version="1.0" encoding="utf-8"?>
<com.example.app.AppItemView xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:minHeight="?android:attr/listPreferredItemHeight"
android:paddingStart="?android:attr/listPreferredItemPaddingStart"
android:paddingEnd="?android:attr/listPreferredItemPaddingEnd">
<ImageView
android:id="@+id/app_icon"
android:layout_width="@dimen/list_detail_image_size"
android:layout_height="@dimen/list_detail_image_size"
/>
<LinearLayout
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:orientation="vertical">
<TextView
android:id="@+id/app_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dip"
android:textAppearance="?android:attr/textAppearanceListItem"
/>
</LinearLayout>
</com.example.app.AppItemView>
package com.example.app;
import android.content.Context;
import android.util.AttributeSet;
import android.widget.ImageView;
import android.widget.TextView;
import com.squareup.picasso.Picasso;
import com.twitter.crashlytics.R;
import com.twitter.crashlytics.app.ItemView;
import com.twitter.crashlytics.models.App;
import butterknife.InjectView;
public class AppItemView extends ItemView<App> {
@InjectView(R.id.app_icon) protected ImageView appIcon;
@InjectView(R.id.app_name) protected TextView appName;
public AppItemView(Context context) {
super(context);
}
public AppItemView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public AppItemView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
protected void showItem(App app) {
this.model = app;
Picasso.with(getContext()).load(model.icon_url).into(appIcon);
appName.setText(model.name);
}
}
package com.example.app;
import android.content.Context;
import android.util.AttributeSet;
import android.widget.LinearLayout;
public abstract class ItemView<Model> extends LinearLayout {
protected Model model = null;
public ItemView(Context context) {
super(context);
}
public ItemView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public ItemView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
protected abstract void showItem(Model model);
}
package com.example.app;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import java.util.ArrayList;
import java.util.List;
public class ModelAdapter<Model> extends BaseAdapter {
protected final Context context;
protected final int layoutId;
public List<Model> elements = new ArrayList<Model>();
public ModelAdapter(Context context, int layoutId) {
this.context = context;
this.layoutId = layoutId;
}
@Override
public int getCount() {
return elements.size();
}
@Override
public Model getItem(int position) {
return elements.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ItemView<Model> view;
if (convertView == null) {
view = (ItemView<Model>) LayoutInflater.from(context).inflate(layoutId, parent, false);
} else {
view = (ItemView<Model>) convertView;
}
Model t = getItem(position);
view.showItem(t);
return view;
}
public void setData(List<Model> elements) {
this.elements = elements;
notifyDataSetChanged();
}
}
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