YearPickerView.java
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package com.fourmob.datetimepicker.date;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.drawable.StateListDrawable;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import com.ectrip.trips.check.R;
public class YearPickerView extends ListView implements AdapterView.OnItemClickListener, DatePickerDialog.OnDateChangedListener {
private YearAdapter mAdapter;
private int mChildSize;
private final DatePickerController mController;
private TextViewWithCircularIndicator mSelectedView;
private int mViewSize;
public YearPickerView(Context context, DatePickerController datePickerController) {
super(context);
mController = datePickerController;
mController.registerOnDateChangedListener(this);
setLayoutParams(new ViewGroup.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
Resources resources = context.getResources();
mViewSize = resources.getDimensionPixelOffset(R.dimen.date_picker_view_animator_height);
mChildSize = resources.getDimensionPixelOffset(R.dimen.year_label_height);
setVerticalFadingEdgeEnabled(true);
setFadingEdgeLength(mChildSize / 3);
init(context);
setOnItemClickListener(this);
setSelector(new StateListDrawable());
setDividerHeight(0);
onDateChanged();
}
private static int getYearFromTextView(TextView view) {
return Integer.valueOf(view.getText().toString());
}
private void init(Context context) {
ArrayList<String> years = new ArrayList<String>();
for (int year = mController.getMinYear(); year <= mController.getMaxYear(); year++) {
years.add(String.format("%d", year));
}
mAdapter = new YearAdapter(context, R.layout.year_label_text_view, years);
setAdapter(mAdapter);
}
public int getFirstPositionOffset() {
final View firstChild = getChildAt(0);
if (firstChild == null) {
return 0;
}
return firstChild.getTop();
}
public void onDateChanged() {
mAdapter.notifyDataSetChanged();
postSetSelectionCentered(mController.getSelectedDay().year - mController.getMinYear());
}
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
mController.tryVibrate();
TextViewWithCircularIndicator clickedView = (TextViewWithCircularIndicator) view;
if (clickedView != null) {
if (clickedView != mSelectedView) {
if (mSelectedView != null) {
mSelectedView.drawIndicator(false);
mSelectedView.requestLayout();
}
clickedView.drawIndicator(true);
clickedView.requestLayout();
mSelectedView = clickedView;
}
mController.onYearSelected(getYearFromTextView(clickedView));
mAdapter.notifyDataSetChanged();
}
}
public void postSetSelectionCentered(int position) {
postSetSelectionFromTop(position, mViewSize / 2 - mChildSize / 2);
}
public void postSetSelectionFromTop(final int position, final int y) {
post(new Runnable() {
public void run() {
setSelectionFromTop(position, y);
requestLayout();
}
});
}
private class YearAdapter extends ArrayAdapter<String> {
public YearAdapter(Context context, int resource, List<String> years) {
super(context, resource, years);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
TextViewWithCircularIndicator v = (TextViewWithCircularIndicator) super.getView(position, convertView, parent);
v.requestLayout();
int year = getYearFromTextView(v);
boolean selected = mController.getSelectedDay().year == year;
v.drawIndicator(selected);
if (selected) {
mSelectedView = v;
}
return v;
}
}
}