Android - TimePicker 分钟到 15

Question

我可以控制 Android TimePicker View 只显示分钟到 15 分钟的间隔吗？

意思是如果现在是 12:28，则显示 12:30，然后单击 + 和 - 按钮将递增和递减 15？

Answer 1

创建一个xml文件并将其命名为activity_time_picker.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

 <TimePicker
        android:id="@+id/timePicker1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/layoutHourMinute"
        android:layout_centerInParent="true"

        />

</RelativeLayout>

现在像这样创建 Activity 类

import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;

import android.annotation.SuppressLint;

import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.NumberPicker;
import android.widget.TimePicker;

public class TimePickerActivity extends Activity {


    TimePicker timePicker;
    private int TIME_PICKER_INTERVAL = 15;
     NumberPicker minutePicker;
     List<String> displayedValues;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
                 super.onCreate(savedInstanceState);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
        setContentView(R.layout.activity_time_picker);
        super.onCreate(savedInstanceState);
        timePicker = (TimePicker)findViewById(R.id.timePicker1);

        timePicker.setIs24HourView(true);
        timePicker.setCurrentHour(0);
        timePicker.setCurrentMinute(0);

        setTimePickerInterval(timePicker);
    }
@SuppressLint("NewApi")
    private void setTimePickerInterval(TimePicker timePicker) {
         try {
                Class<?> classForid = Class.forName("com.android.internal.R$id");
               // Field timePickerField = classForid.getField("timePicker");  

                Field field = classForid.getField("minute");
                minutePicker = (NumberPicker) timePicker
                        .findViewById(field.getInt(null));

                minutePicker.setMinValue(0);
                minutePicker.setMaxValue(3);
                displayedValues = new ArrayList<String>();
                for (int i = 0; i < 60; i += TIME_PICKER_INTERVAL) {
                    displayedValues.add(String.format("%02d", i));
                }
              //  for (int i = 0; i < 60; i += TIME_PICKER_INTERVAL) {
              //      displayedValues.add(String.format("%02d", i));
              //  }
                minutePicker.setDisplayedValues(displayedValues
                        .toArray(new String[0]));
               minutePicker.setWrapSelectorWheel(true);
            } catch (Exception e) {
                e.printStackTrace();
            }
    }
}