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Code Issues Packages Projects Releases Wiki Activity

Code cleanup: improve ChooseActivityDialog using ViewHolder pattern

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This commit is contained in:
Jimmy Shih
2014-01-17 13:39:22 -08:00
parent 28801a1332
commit b5d40baeba
1 changed files with 21 additions and 10 deletions
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MyTracks/src/com/google/android/apps/mytracks/fragments/ChooseActivityDialogFragment.java
+21 -10
View File
@@ -61,6 +61,12 @@ public class ChooseActivityDialogFragment extends AbstractMyTracksDialogFragment
public void onChooseActivityDone(String packageName, String className);
}
private static class ViewHolder {
TextView text1;
TextView text2;
ImageView icon;
}
public static final String CHOOSE_ACTIVITY_DIALOG_TAG = "chooseActivityDialog";
private ChooseActivityCaller caller;
@@ -88,24 +94,29 @@ public class ChooseActivityDialogFragment extends AbstractMyTracksDialogFragment
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view;
ViewHolder viewHolder;
if (convertView == null) {
view = getActivity().getLayoutInflater()
.inflate(R.layout.choose_activity_list_item, parent, false);
viewHolder = new ViewHolder();
viewHolder.text1 = (TextView) view.findViewById(R.id.choose_activity_list_item_text1);
viewHolder.text2 = (TextView) view.findViewById(R.id.choose_activity_list_item_text2);
viewHolder.icon = (ImageView) view.findViewById(R.id.choose_activity_list_item_icon);
view.setTag(viewHolder);
} else {
view = convertView;
viewHolder = (ViewHolder) view.getTag();
}
DisplayInfo displayInfo = getItem(position);
TextView text1 = (TextView) view.findViewById(R.id.choose_activity_list_item_text1);
TextView text2 = (TextView) view.findViewById(R.id.choose_activity_list_item_text2);
ImageView icon = (ImageView) view.findViewById(R.id.choose_activity_list_item_icon);
text1.setText(displayInfo.primaryLabel);
if (displayInfo.secondaryLabel != null) {
text2.setVisibility(View.VISIBLE);
text2.setText(displayInfo.secondaryLabel);
} else {
text2.setVisibility(View.GONE);
viewHolder.text1.setText(displayInfo.primaryLabel);
boolean hasSecondaryLabel = displayInfo.secondaryLabel != null;
viewHolder.text2.setVisibility(hasSecondaryLabel ? View.VISIBLE : View.GONE);
if (hasSecondaryLabel) {
viewHolder.text2.setText(displayInfo.secondaryLabel);
}
icon.setImageDrawable(displayInfo.icon);
viewHolder.icon.setImageDrawable(displayInfo.icon);
return view;
}
};