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Start your free trialMichael Partridge
7,129 PointsPlease show how to use ButterKnife in current scenario. Documentation changed.
I am able to implement ButterKnife with no errors, but when I run the app at the end of this objective I get a null pointer reference error. Also I wanted to inject hour not itemView, but it gave an error. Also the butterknife documentation shows "bind" in the place of inject.
public class HourAdapter extends RecyclerView.Adapter<HourAdapter.HourViewHolder> {
@InjectView(R.id.timeLabel) TextView mTimeLabel;
@InjectView(R.id.summaryLabel) TextView mSummaryLabel;
@InjectView(R.id.temperatureLabel) TextView mTemperatureLabel;
@InjectView(R.id.iconImageView) ImageView mIconImageView;
private Hour[] mHours;
public HourAdapter(Hour[] hours) {
mHours = hours;
}
@Override
public HourViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.hourly_list_item, viewGroup, false);
HourViewHolder viewHolder = new HourViewHolder(view);
return viewHolder;
}
@Override
public void onBindViewHolder(HourViewHolder hourViewHolder, int i) {
hourViewHolder.bindHour(mHours[i]);
}
@Override
public int getItemCount() {
return mHours.length;
}
public class HourViewHolder extends RecyclerView.ViewHolder {
public HourViewHolder(View itemView) {
super(itemView);
ButterKnife.inject(this, itemView);
}
public void bindHour(Hour hour) {
ButterKnife.inject(this,itemView);
mTimeLabel.setText(hour.getHour());
mSummaryLabel.setText(hour.getSummary());
mTemperatureLabel.setText(hour.getTemperature() + "");
mIconImageView.setImageResource(hour.getIconId());
}
}
}
1 Answer
Seth Kroger
56,413 PointsIf you're using version 7 of ButterKnife you'll need to change @InjectView to @Bind and ButterKnife.inject() to ButterKnife.bind().
Michael Partridge
7,129 PointsMichael Partridge
7,129 PointsThanks for clarifying that! I am compiling version "6.1.0" so I should be good with using "inject."
Abhinav Kanoria
7,730 PointsAbhinav Kanoria
7,730 PointsHow do I use ButterKnife to bind views in the HourAdapter class? Where do I write this code? Please help.