自定义时间选择器的分钟为自定义的选择范围

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1.布局common_time.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="wrap_content"    android:gravity="center"    android:orientation="horizontal" >    <TimePicker        android:id="@+id/timepicker"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:timePickerMode="spinner"/></LinearLayout>

2.MyTimePickerDialog.class

import java.util.ArrayList;import java.util.List;import android.app.AlertDialog;import android.content.Context;import android.content.DialogInterface;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.LinearLayout;import android.widget.NumberPicker;import android.widget.TimePicker;import android.widget.TimePicker.OnTimeChangedListener;public class MyTimePickerDialog implements OnTimeChangedListener {    private Context mContext;    private AlertDialog.Builder b;    private TimePicker tp;    private static boolean is24Hour = true;    private OnTimeChangeListener listener;    private String hour = "00";    private String minute = "00";    private int hourI = 0;    private int minuteI = 0;    private static String[] displayvalue = new String[] { "00", "30" };//自定义分钟选择为  00 和 30    public MyTimePickerDialog(Context context) {        this(context, is24Hour, 0, 0);    }    public MyTimePickerDialog(Context context, boolean is24Hour, int hour,            int minute) {        this.is24Hour = is24Hour;        this.mContext = context;        this.hourI = hour;        this.minuteI = minute;        init();    }    private void init() {        View view = LayoutInflater.from(mContext).inflate(R.layout.common_time,                null);        tp = (TimePicker) view.findViewById(R.id.timepicker);        tp.setIs24HourView(is24Hour);        tp.setCurrentHour(hourI);        tp.setCurrentMinute(minuteI);        NumberPicker mMinuteSpinner = findNumberPicker(tp).get(                findNumberPicker(tp).size() - 1);//得到分钟的NumberPicker组件        //设置分钟组件的参数        mMinuteSpinner.setMinValue(0);//最小0        mMinuteSpinner.setMaxValue(1);//最大1        mMinuteSpinner.setDisplayedValues(displayvalue);        mMinuteSpinner.setOnLongPressUpdateInterval(100);        tp.setOnTimeChangedListener(this);        b = new AlertDialog.Builder(mContext);        b.setView(view);        b.setPositiveButton("确定", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                if (listener != null) {                    listener.onTimeChange(hour, minute);                }            }        });        b.setNegativeButton("取消", null);        b.create().show();    }    /**     * 得到viewGroup里面的numberpicker组件     *      * @param viewGroup     * @return      */    private List<NumberPicker> findNumberPicker(ViewGroup viewGroup) {        List<NumberPicker> npList = new ArrayList<NumberPicker>();        View child = null;        if (null != viewGroup) {            for (int i = 0; i < viewGroup.getChildCount(); i++) {                child = viewGroup.getChildAt(i);                if (child instanceof NumberPicker) {                    npList.add((NumberPicker) child);                } else if (child instanceof LinearLayout) {                    List<NumberPicker> result = findNumberPicker((ViewGroup) child);                    if (result.size() > 0) {                        return result;                    }                }            }        }        return npList;    }    @Override    public void onTimeChanged(TimePicker view, int hourOfDay, int minute) {        this.hour = hourOfDay < 10 ? "0" + hourOfDay : "" + hourOfDay;        this.minute = displayvalue[minute];    }    public void setOnTimeChangeListener(OnTimeChangeListener listener) {        this.listener = listener;    }    public interface OnTimeChangeListener {    /**    *返回字符串 hour:HH  minute:mm    */        void onTimeChange(String hour, String minute);    }}

3.附修改NumberPicker属性的方法

/*     * 调整numberpicker大小     */    private void resizeNumberPicker(NumberPicker np) {        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ScreenUtil.dp2px(mContext, 50.0f),                LinearLayout.LayoutParams.WRAP_CONTENT);        params.setMargins(10, 0, 10, 0);        np.setLayoutParams(params);    }/**     * ScreenUtil.class中dp转px的方法     * @param context     * @param dp      * @return dp转换为px     */    public static int dp2px(Context context,float dp){        float scale = context.getResources().getDisplayMetrics().density;        return (int) (dp*scale);    }

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