/*
* Android Wheel Control.
* https://code.google.com/p/android-wheel/
*
* Copyright 2010 Yuri Kanivets
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.su.wheelview;
import java.util.LinkedList;
import java.util.List;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.GradientDrawable;
import android.graphics.drawable.GradientDrawable.Orientation;
import android.os.Handler;
import android.os.Message;
import android.text.Layout;
import android.text.StaticLayout;
import android.text.TextPaint;
import android.util.AttributeSet;
import android.util.FloatMath;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.Interpolator;
import android.widget.Scroller;
import com.testaijia.time.R;
/**
* Numeric wheel view.
*
* @author Yuri Kanivets
*/
public class WheelView extends View {
/** Scrolling duration */
private static final int SCROLLING_DURATION = 400;
/** Minimum delta for scrolling */
private static final int MIN_DELTA_FOR_SCROLLING = 1;
/** Current value & label text color */
private static final int VALUE_TEXT_COLOR = 0xF0000000;
/** Items text color */
private static final int ITEMS_TEXT_COLOR = 0xFF000000;
/** Top and bottom shadows colors */
private static final int[] SHADOWS_COLORS = new int[] { 0xFF111111,
0x00AAAAAA, 0x00AAAAAA };
/** Additional items height (is added to standard text item height) */
private static final int ADDITIONAL_ITEM_HEIGHT = 15;
/** Text size */
public int TEXT_SIZE;
/** Top and bottom items offset (to hide that) */
private final int ITEM_OFFSET = TEXT_SIZE / 5;
/** Additional width for items layout */
private static final int ADDITIONAL_ITEMS_SPACE = 10;
/** Label offset */
private static final int LABEL_OFFSET = 8;
/** Left and right padding value */
private static final int PADDING = 10;
/** Default count of visible items */
private static final int DEF_VISIBLE_ITEMS = 5;
// Wheel Values
private WheelAdapter adapter = null;
private int currentItem = 0;
// Widths
private int itemsWidth = 0;
private int labelWidth = 0;
// Count of visible items
private int visibleItems = DEF_VISIBLE_ITEMS;
// Item height
private int itemHeight = 0;
// Text paints
private TextPaint itemsPaint;
private TextPaint valuePaint;
// Layouts
private StaticLayout itemsLayout;
private StaticLayout labelLayout;
private StaticLayout valueLayout;
// Label & background
private String label;
private Drawable centerDrawable;
// Shadows drawables
private GradientDrawable topShadow;
private GradientDrawable bottomShadow;
// Scrolling
private boolean isScrollingPerformed;
private int scrollingOffset;
// Scrolling animation
private GestureDetector gestureDetector;
private Scroller scroller;
private int lastScrollY;
// Cyclic
boolean isCyclic = false;
// Listeners
private List<OnWheelChangedListener> changingListeners = new LinkedList<OnWheelChangedListener>();
private List<OnWheelScrollListener> scrollingListeners = new LinkedList<OnWheelScrollListener>();
/**
* Constructor
*/
public WheelView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
initData(context);
}
/**
* Constructor
*/
public WheelView(Context context, AttributeSet attrs) {
super(context, attrs);
initData(context);
}
/**
* Constructor
*/
public WheelView(Context context) {
super(context);
initData(context);
}
/**
* Initializes class data
*
* @param context
* the context
*/
private void initData(Context context) {
gestureDetector = new GestureDetector(context, gestureListener);
gestureDetector.setIsLongpressEnabled(false);
scroller = new Scroller(context);
}
/**
* Gets wheel adapter
*
* @return the adapter
*/
public WheelAdapter getAdapter() {
return adapter;
}
/**
* Sets wheel adapter
*
* @param adapter
* the new wheel adapter
*/
public void setAdapter(WheelAdapter adapter) {
this.adapter = adapter;
invalidateLayouts();
invalidate();
}
/**
* Set the the specified scrolling interpolator
*
* @param interpolator
* the interpolator
*/
public void setInterpolator(Interpolator interpolator) {
scroller.forceFinished(true);
scroller = new Scroller(getContext(), interpolator);
}
/**
* Gets count of visible items
*
* @return the count of visible items
*/
public int getVisibleItems() {
return visibleItems;
}
/**
* Sets count of visible items
*
* @param count
* the new count
*/
public void setVisibleItems(int count) {
visibleItems = count;
invalidate();
}
/**
* Gets label
*
* @return the label
*/
public String getLabel() {
return label;
}
/**
* Sets label
*
* @param newLabel
* the label to set
*/
public void setLabel(String newLabel) {
if (label == null || !label.equals(newLabel)) {
label = newLabel;
labelLayout = null;
invalidate();
}
}
/**
* Adds wheel changing listener
*
* @param listener
* the listener
*/
public void addChangingListener(OnWheelChangedListener listener) {
changingListeners.add(listener);
}
/**
* Removes wheel changing listener
*
* @param listener
* the listener
*/
public void removeChangingListener(OnWheelChangedListener listener) {
changingListeners.remove(listener);
}
/**
* Notifies changing listeners
*
* @param oldValue
* the old wheel value
* @param newValue
* the new wheel value
*/
protected void notifyChangingListeners(int oldValue, int newValue) {
for (OnWheelChangedListener listener : changingListeners) {
listener.onChanged(this, oldValue, newValue);
}
}
/**
* Adds wheel scrolling listener
*
* @param listener
* the listener
*/
public void addScrollingListener(OnWheelScrollListener listener) {
scrollingListeners.add(listener);
}
/**
* Removes wheel scrolling listener
*
* @param listener
* the listener
*/
public void removeScrollingListener(OnWheelScrollListener listener) {
scrollingListeners.remove(listener);
}
/**
* Notifies listeners about starting scrolling
*/
protected void notifyScrollingListenersAboutStart() {
for (OnWheelScrollListener listener : scrollingListeners) {
listener.onScrollingStarted(this);
}
}
/**
* Notifies listeners about ending scrolling
*/
protected void notifyScrollingListenersAboutEnd() {
for (OnWheelScrollListener listener : scrollingListeners) {
listener.onScrollingFinished(this);
}
}
/**
* Gets current value
*
* @return the current value
*/
public int getCurrentItem() {
return currentItem;
}
/**
* Sets the current item. Does nothing when index is wrong.
*
* @param index
* the item index
* @param animated
*
天气日历&时间选择 模仿Iphone时间滚轮(程序源码).rar
版权申诉
53 浏览量
2023-03-17
08:49:21
上传
评论
收藏 59KB RAR 举报
金枝玉叶9
- 粉丝: 137
- 资源: 7640
最新资源
- 基于matlab实现本份代码能对图像进行gabor滤波处理,结合指纹方向图以及指纹沟壑频率特性,对指纹图像进行增强.rar
- 基于matlab实现RBM神经网络实现了手写数字体识别的GUI程序.rar
- 基于matlab实现蝙蝠算法优化相关向量机建模对数据进行建模和预测.rar
- 基于matlab实现编写的禁忌搜索算法,解决了TSP问题,对初学者有重要的参考价值.rar
- 基于matlab实现SOH关于IMU进行姿态求解的C代码,里面包含了两套代码,分别是重力约束法求解和梯度下降法求解.rar
- 1_简单电子邮件客户端.zip
- 基于matlab实现powell优化搜索算法,适合于多参数优化且目标函数中不包含参数的情况.rar
- 基于matlab实现PID神经网络前向和反向学习算法的matlab的原程序代码.rar
- 基于matlab实现nsga-2的多目标优化算法,有注解.rar
- AIR-AP1815-K9-ME-8-5-182-0.zipFor 1815 1830 1840 1850 2700 3700
资源上传下载、课程学习等过程中有任何疑问或建议,欢迎提出宝贵意见哦~我们会及时处理!
点击此处反馈