滚动式时间选择器

int mYear, mMonth, mDay;

//时间选择，在点击事件中调用就可以了
    public void setDate(){
        //点击"日期"按钮布局 设置日期
        final Calendar ca = Calendar.getInstance();
        mYear = ca.get(Calendar.YEAR);
        mMonth = ca.get(Calendar.MONTH);
        mDay = ca.get(Calendar.DAY_OF_MONTH);

                //通过自定义控件AlertDialog实现
                AlertDialog.Builder builder = new AlertDialog.Builder(InPositioningPartActivity.this);
                View view = (LinearLayout) getLayoutInflater().inflate(R.layout.date_dialog, null);
                final DatePicker datePicker = (DatePicker) view.findViewById(R.id.date_picker);
                //设置日期简略显示 否则详细显示 包括:星期\周
                datePicker.setCalendarViewShown(false);
                //初始化当前日期

                Calendar   calendar   =   Calendar.getInstance();

                calendar.setTimeInMillis(System.currentTimeMillis());
                datePicker.init(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),
                        calendar.get(Calendar.DAY_OF_MONTH), null);
                //设置date布局
                builder.setView(view);
                builder.setTitle("设置日期信息");
                builder.setPositiveButton("确  定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        //日期格式
                        StringBuffer sb = new StringBuffer();
                        sb.append(String.format("%d-%02d-%02d",
                                datePicker.getYear(),
                                datePicker.getMonth() + 1,
                                datePicker.getDayOfMonth()));
                        mInposiFeta.setText(sb);//将时间返回到textview上
                        //赋值后面闹钟使用
                        mYear = datePicker.getYear();
                        mMonth = datePicker.getMonth();
                        mDay = datePicker.getDayOfMonth();
                        dialog.cancel();
                    }
                });
                builder.setNegativeButton("取  消", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.cancel();
                    }
                });
                builder.create().show();

    }


}

//弹窗布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <DatePicker
        android:datePickerMode="spinner"
        android:calendarViewShown="false"
        android:id="@+id/date_picker"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dip"
        android:layout_gravity="center" >
    </DatePicker>
</LinearLayout>