Android自定义控件实战——滚动选择器PickerView

标签： androidTimerPickerPickerView 2014-08-12 11:57 10014人阅读 评论(39) 收藏 举报 本文章已收录于： 分类： Android（10） 作者同类文章 X

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转载请声明出处http://blog.csdn.net/zhongkejingwang/article/details/38513301

手机里设置闹钟需要选择时间，那个选择时间的控件就是滚动选择器，前几天用手机刷了MIUI，发现自带的那个时间选择器效果挺好看的，于是就自己仿写了一个，权当练手。先来看效果：

效果还行吧？实现思路就是自定义一个PickerView，单独滚动的是一个PickerView，显然上图中有分和秒的选择所以在布局里用了两个PickerView。由于这里不涉及到text的点击事件，所以只需要继承View就行了，直接把text用canvas画上去。PickerView的实现的主要难点：

难点1：

字体随距离的渐变。可以看到，text随离中心位置的距离变化而变化，这里变化的是透明度alpha和字体大小TexSize，这两个值我都设置了Max和Min值，通过其与中心点的距离计算scale。我用的是变化曲线是抛物线scale=1-ax^2(x<=Height/4),scale = 0(x>Height/4)，a=(4/Height)^2。x就是距离View中心的偏移量。用图片表示如下：

难点2：

text的居中。绘制text的时候不仅要使其在x方向上居中，还要在y方向上居中，在x方向上比较简单，设置Paint的Align为Align.CENTER就行了，但是y方向上很蛋疼，需要计算text的baseline。

难点3：

循环滚动。为了解决循环滚动的问题我把存放text的List从中间往上下摊开，通过不断地moveHeadToTail和moveTailToHead使选中的text始终是list的中间position的值。

以上就是几个难点，了解了之后可以来看PickerView的代码了：

[java] view plain copy print ?

1. packagecom.jingchen.timerpicker;
3. importjava.util.ArrayList;
4. importjava.util.List;
5. importjava.util.Timer;
6. importjava.util.TimerTask;
8. importandroid.content.Context;
9. importandroid.graphics.Canvas;
10. importandroid.graphics.Paint;
11. importandroid.graphics.Paint.Align;
12. importandroid.graphics.Paint.FontMetricsInt;
13. importandroid.graphics.Paint.Style;
14. importandroid.os.Handler;
15. importandroid.os.Message;
16. importandroid.util.AttributeSet;
17. importandroid.view.MotionEvent;
18. importandroid.view.View;
20. /**
21. *滚动选择器
22. *
23. *@authorchenjing
24. *
25. */
26. publicclassPickerViewextendsView
27. {
29. publicstaticfinalStringTAG="PickerView";
30. /**
31. *text之间间距和minTextSize之比
32. */
33. publicstaticfinalfloatMARGIN_ALPHA=2.8f;
34. /**
35. *自动回滚到中间的速度
36. */
37. publicstaticfinalfloatSPEED=2;
39. privateList<String>mDataList;
40. /**
41. *选中的位置，这个位置是mDataList的中心位置，一直不变
42. */
43. privateintmCurrentSelected;
44. privatePaintmPaint;
46. privatefloatmMaxTextSize=80;
47. privatefloatmMinTextSize=40;
49. privatefloatmMaxTextAlpha=255;
50. privatefloatmMinTextAlpha=120;
52. privateintmColorText=0x333333;
54. privateintmViewHeight;
55. privateintmViewWidth;
57. privatefloatmLastDownY;
58. /**
59. *滑动的距离
60. */
61. privatefloatmMoveLen=0;
62. privatebooleanisInit=false;
63. privateonSelectListenermSelectListener;
64. privateTimertimer;
65. privateMyTimerTaskmTask;
67. HandlerupdateHandler=newHandler()
68. {
70. @Override
71. publicvoidhandleMessage(Messagemsg)
72. {
73. if(Math.abs(mMoveLen)<SPEED)
74. {
75. mMoveLen=0;
76. if(mTask!=null)
77. {
78. mTask.cancel();
79. mTask=null;
80. performSelect();
81. }
82. }else
83. //这里mMoveLen/Math.abs(mMoveLen)是为了保有mMoveLen的正负号，以实现上滚或下滚
84. mMoveLen=mMoveLen-mMoveLen/Math.abs(mMoveLen)*SPEED;
85. invalidate();
86. }
88. };
90. publicPickerView(Contextcontext)
91. {
92. super(context);
93. init();
94. }
96. publicPickerView(Contextcontext,AttributeSetattrs)
97. {
98. super(context,attrs);
99. init();
100. }
102. publicvoidsetOnSelectListener(onSelectListenerlistener)
103. {
104. mSelectListener=listener;
105. }
107. privatevoidperformSelect()
108. {
109. if(mSelectListener!=null)
110. mSelectListener.onSelect(mDataList.get(mCurrentSelected));
111. }
113. publicvoidsetData(List<String>datas)
114. {
115. mDataList=datas;
116. mCurrentSelected=datas.size()/2;
117. invalidate();
118. }
120. publicvoidsetSelected(intselected)
121. {
122. mCurrentSelected=selected;
123. }
125. privatevoidmoveHeadToTail()
126. {
127. Stringhead=mDataList.get(0);
128. mDataList.remove(0);
129. mDataList.add(head);
130. }
132. privatevoidmoveTailToHead()
133. {
134. Stringtail=mDataList.get(mDataList.size()-1);
135. mDataList.remove(mDataList.size()-1);
136. mDataList.add(0,tail);
137. }
139. @Override
140. protectedvoidonMeasure(intwidthMeasureSpec,intheightMeasureSpec)
141. {
142. super.onMeasure(widthMeasureSpec,heightMeasureSpec);
143. mViewHeight=getMeasuredHeight();
144. mViewWidth=getMeasuredWidth();
145. //按照View的高度计算字体大小
146. mMaxTextSize=mViewHeight/4.0f;
147. mMinTextSize=mMaxTextSize/2f;
148. isInit=true;
149. invalidate();
150. }
152. privatevoidinit()
153. {
154. timer=newTimer();
155. mDataList=newArrayList<String>();
156. mPaint=newPaint(Paint.ANTI_ALIAS_FLAG);
157. mPaint.setStyle(Style.FILL);
158. mPaint.setTextAlign(Align.CENTER);
159. mPaint.setColor(mColorText);
160. }
162. @Override
163. protectedvoidonDraw(Canvascanvas)
164. {
165. super.onDraw(canvas);
166. //根据index绘制view
167. if(isInit)
168. drawData(canvas);
169. }
171. privatevoiddrawData(Canvascanvas)
172. {
173. //先绘制选中的text再往上往下绘制其余的text
174. floatscale=parabola(mViewHeight/4.0f,mMoveLen);
175. floatsize=(mMaxTextSize-mMinTextSize)*scale+mMinTextSize;
176. mPaint.setTextSize(size);
177. mPaint.setAlpha((int)((mMaxTextAlpha-mMinTextAlpha)*scale+mMinTextAlpha));
178. //text居中绘制，注意baseline的计算才能达到居中，y值是text中心坐标
179. floatx=(float)(mViewWidth/2.0);
180. floaty=(float)(mViewHeight/2.0+mMoveLen);
181. FontMetricsIntfmi=mPaint.getFontMetricsInt();
182. floatbaseline=(float)(y-(fmi.bottom/2.0+fmi.top/2.0));
184. canvas.drawText(mDataList.get(mCurrentSelected),x,baseline,mPaint);
185. //绘制上方data
186. for(inti=1;(mCurrentSelected-i)>=0;i++)
187. {
188. drawOtherText(canvas,i,-1);
189. }
190. //绘制下方data
191. for(inti=1;(mCurrentSelected+i)<mDataList.size();i++)
192. {
193. drawOtherText(canvas,i,1);
194. }
196. }
198. /**
199. *@paramcanvas
200. *@paramposition
201. *距离mCurrentSelected的差值
202. *@paramtype
203. *1表示向下绘制，-1表示向上绘制
204. */
205. privatevoiddrawOtherText(Canvascanvas,intposition,inttype)
206. {
207. floatd=(float)(MARGIN_ALPHA*mMinTextSize*position+type
208. *mMoveLen);
209. floatscale=parabola(mViewHeight/4.0f,d);
210. floatsize=(mMaxTextSize-mMinTextSize)*scale+mMinTextSize;
211. mPaint.setTextSize(size);
212. mPaint.setAlpha((int)((mMaxTextAlpha-mMinTextAlpha)*scale+mMinTextAlpha));
213. floaty=(float)(mViewHeight/2.0+type*d);
214. FontMetricsIntfmi=mPaint.getFontMetricsInt();
215. floatbaseline=(float)(y-(fmi.bottom/2.0+fmi.top/2.0));
216. canvas.drawText(mDataList.get(mCurrentSelected+type*position),
217. (float)(mViewWidth/2.0),baseline,mPaint);
218. }
220. /**
221. *抛物线
222. *
223. *@paramzero
224. *零点坐标
225. *@paramx
226. *偏移量
227. *@returnscale
228. */
229. privatefloatparabola(floatzero,floatx)
230. {
231. floatf=(float)(1-Math.pow(x/zero,2));
232. returnf<0?0:f;
233. }
235. @Override
236. publicbooleanonTouchEvent(MotionEventevent)
237. {
238. switch(event.getActionMasked())
239. {
240. caseMotionEvent.ACTION_DOWN:
241. doDown(event);
242. break;
243. caseMotionEvent.ACTION_MOVE:
244. doMove(event);
245. break;
246. caseMotionEvent.ACTION_UP:
247. doUp(event);
248. break;
249. }
250. returntrue;
251. }
253. privatevoiddoDown(MotionEventevent)
254. {
255. if(mTask!=null)
256. {
257. mTask.cancel();
258. mTask=null;
259. }
260. mLastDownY=event.getY();
261. }
263. privatevoiddoMove(MotionEventevent)
264. {
266. mMoveLen+=(event.getY()-mLastDownY);
268. if(mMoveLen>MARGIN_ALPHA*mMinTextSize/2)
269. {
270. //往下滑超过离开距离
271. moveTailToHead();
272. mMoveLen=mMoveLen-MARGIN_ALPHA*mMinTextSize;
273. }elseif(mMoveLen<-MARGIN_ALPHA*mMinTextSize/2)
274. {
275. //往上滑超过离开距离
276. moveHeadToTail();
277. mMoveLen=mMoveLen+MARGIN_ALPHA*mMinTextSize;
278. }
280. mLastDownY=event.getY();
281. invalidate();
282. }
284. privatevoiddoUp(MotionEventevent)
285. {
286. //抬起手后mCurrentSelected的位置由当前位置move到中间选中位置
287. if(Math.abs(mMoveLen)<0.0001)
288. {
289. mMoveLen=0;
290. return;
291. }
292. if(mTask!=null)
293. {
294. mTask.cancel();
295. mTask=null;
296. }
297. mTask=newMyTimerTask(updateHandler);
298. timer.schedule(mTask,0,10);
299. }
301. classMyTimerTaskextendsTimerTask
302. {
303. Handlerhandler;
305. publicMyTimerTask(Handlerhandler)
306. {
307. this.handler=handler;
308. }
310. @Override
311. publicvoidrun()
312. {
313. handler.sendMessage(handler.obtainMessage());
314. }
316. }
318. publicinterfaceonSelectListener
319. {
320. voidonSelect(Stringtext);
321. }
322. }

package com.jingchen.timerpicker;import java.util.ArrayList;import java.util.List;import java.util.Timer;import java.util.TimerTask;import android.content.Context;import android.graphics.Canvas;import android.graphics.Paint;import android.graphics.Paint.Align;import android.graphics.Paint.FontMetricsInt;import android.graphics.Paint.Style;import android.os.Handler;import android.os.Message;import android.util.AttributeSet;import android.view.MotionEvent;import android.view.View;/** * 滚动选择器 *  * @author chenjing *  */public class PickerView extends View{public static final String TAG = "PickerView";/** * text之间间距和minTextSize之比 */public static final float MARGIN_ALPHA = 2.8f;/** * 自动回滚到中间的速度 */public static final float SPEED = 2;private List<String> mDataList;/** * 选中的位置，这个位置是mDataList的中心位置，一直不变 */private int mCurrentSelected;private Paint mPaint;private float mMaxTextSize = 80;private float mMinTextSize = 40;private float mMaxTextAlpha = 255;private float mMinTextAlpha = 120;private int mColorText = 0x333333;private int mViewHeight;private int mViewWidth;private float mLastDownY;/** * 滑动的距离 */private float mMoveLen = 0;private boolean isInit = false;private onSelectListener mSelectListener;private Timer timer;private MyTimerTask mTask;Handler updateHandler = new Handler(){@Overridepublic void handleMessage(Message msg){if (Math.abs(mMoveLen) < SPEED){mMoveLen = 0;if (mTask != null){mTask.cancel();mTask = null;performSelect();}} else// 这里mMoveLen / Math.abs(mMoveLen)是为了保有mMoveLen的正负号，以实现上滚或下滚mMoveLen = mMoveLen - mMoveLen / Math.abs(mMoveLen) * SPEED;invalidate();}};public PickerView(Context context){super(context);init();}public PickerView(Context context, AttributeSet attrs){super(context, attrs);init();}public void setOnSelectListener(onSelectListener listener){mSelectListener = listener;}private void performSelect(){if (mSelectListener != null)mSelectListener.onSelect(mDataList.get(mCurrentSelected));}public void setData(List<String> datas){mDataList = datas;mCurrentSelected = datas.size() / 2;invalidate();}public void setSelected(int selected){mCurrentSelected = selected;}private void moveHeadToTail(){String head = mDataList.get(0);mDataList.remove(0);mDataList.add(head);}private void moveTailToHead(){String tail = mDataList.get(mDataList.size() - 1);mDataList.remove(mDataList.size() - 1);mDataList.add(0, tail);}@Overrideprotected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){super.onMeasure(widthMeasureSpec, heightMeasureSpec);mViewHeight = getMeasuredHeight();mViewWidth = getMeasuredWidth();// 按照View的高度计算字体大小mMaxTextSize = mViewHeight / 4.0f;mMinTextSize = mMaxTextSize / 2f;isInit = true;invalidate();}private void init(){timer = new Timer();mDataList = new ArrayList<String>();mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);mPaint.setStyle(Style.FILL);mPaint.setTextAlign(Align.CENTER);mPaint.setColor(mColorText);}@Overrideprotected void onDraw(Canvas canvas){super.onDraw(canvas);// 根据index绘制viewif (isInit)drawData(canvas);}private void drawData(Canvas canvas){// 先绘制选中的text再往上往下绘制其余的textfloat scale = parabola(mViewHeight / 4.0f, mMoveLen);float size = (mMaxTextSize - mMinTextSize) * scale + mMinTextSize;mPaint.setTextSize(size);mPaint.setAlpha((int) ((mMaxTextAlpha - mMinTextAlpha) * scale + mMinTextAlpha));// text居中绘制，注意baseline的计算才能达到居中，y值是text中心坐标float x = (float) (mViewWidth / 2.0);float y = (float) (mViewHeight / 2.0 + mMoveLen);FontMetricsInt fmi = mPaint.getFontMetricsInt();float baseline = (float) (y - (fmi.bottom / 2.0 + fmi.top / 2.0));canvas.drawText(mDataList.get(mCurrentSelected), x, baseline, mPaint);// 绘制上方datafor (int i = 1; (mCurrentSelected - i) >= 0; i++){drawOtherText(canvas, i, -1);}// 绘制下方datafor (int i = 1; (mCurrentSelected + i) < mDataList.size(); i++){drawOtherText(canvas, i, 1);}}/** * @param canvas * @param position *            距离mCurrentSelected的差值 * @param type *            1表示向下绘制，-1表示向上绘制 */private void drawOtherText(Canvas canvas, int position, int type){float d = (float) (MARGIN_ALPHA * mMinTextSize * position + type* mMoveLen);float scale = parabola(mViewHeight / 4.0f, d);float size = (mMaxTextSize - mMinTextSize) * scale + mMinTextSize;mPaint.setTextSize(size);mPaint.setAlpha((int) ((mMaxTextAlpha - mMinTextAlpha) * scale + mMinTextAlpha));float y = (float) (mViewHeight / 2.0 + type * d);FontMetricsInt fmi = mPaint.getFontMetricsInt();float baseline = (float) (y - (fmi.bottom / 2.0 + fmi.top / 2.0));canvas.drawText(mDataList.get(mCurrentSelected + type * position),(float) (mViewWidth / 2.0), baseline, mPaint);}/** * 抛物线 *  * @param zero *            零点坐标 * @param x *            偏移量 * @return scale */private float parabola(float zero, float x){float f = (float) (1 - Math.pow(x / zero, 2));return f < 0 ? 0 : f;}@Overridepublic boolean onTouchEvent(MotionEvent event){switch (event.getActionMasked()){case MotionEvent.ACTION_DOWN:doDown(event);break;case MotionEvent.ACTION_MOVE:doMove(event);break;case MotionEvent.ACTION_UP:doUp(event);break;}return true;}private void doDown(MotionEvent event){if (mTask != null){mTask.cancel();mTask = null;}mLastDownY = event.getY();}private void doMove(MotionEvent event){mMoveLen += (event.getY() - mLastDownY);if (mMoveLen > MARGIN_ALPHA * mMinTextSize / 2){// 往下滑超过离开距离moveTailToHead();mMoveLen = mMoveLen - MARGIN_ALPHA * mMinTextSize;} else if (mMoveLen < -MARGIN_ALPHA * mMinTextSize / 2){// 往上滑超过离开距离moveHeadToTail();mMoveLen = mMoveLen + MARGIN_ALPHA * mMinTextSize;}mLastDownY = event.getY();invalidate();}private void doUp(MotionEvent event){// 抬起手后mCurrentSelected的位置由当前位置move到中间选中位置if (Math.abs(mMoveLen) < 0.0001){mMoveLen = 0;return;}if (mTask != null){mTask.cancel();mTask = null;}mTask = new MyTimerTask(updateHandler);timer.schedule(mTask, 0, 10);}class MyTimerTask extends TimerTask{Handler handler;public MyTimerTask(Handler handler){this.handler = handler;}@Overridepublic void run(){handler.sendMessage(handler.obtainMessage());}}public interface onSelectListener{void onSelect(String text);}}

代码里的注释都写的很清楚了。接下来，我们就用写好的PickerView实现文章开头的图片效果吧~

首先看MainActivity的布局：

[html] view plain copy print ?

1. <RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"
2. android:layout_width="match_parent"
3. android:layout_height="match_parent"
4. android:background="#000000">
6. <RelativeLayout
7. android:layout_width="wrap_content"
8. android:layout_height="wrap_content"
9. android:layout_centerInParent="true"
10. android:background="#ffffff">
12. <com.jingchen.timerpicker.PickerView
13. android:id="@+id/minute_pv"
14. android:layout_width="80dp"
15. android:layout_height="160dp"/>
17. <TextView
18. android:id="@+id/minute_tv"
19. android:layout_width="wrap_content"
20. android:layout_height="wrap_content"
21. android:layout_centerVertical="true"
22. android:layout_toRightOf="@id/minute_pv"
23. android:text="分"
24. android:textColor="#ffaa33"
25. android:textSize="26sp"
26. android:textStyle="bold"/>
28. <com.jingchen.timerpicker.PickerView
29. android:id="@+id/second_pv"
30. android:layout_width="80dp"
31. android:layout_height="160dp"
32. android:layout_toRightOf="@id/minute_tv"/>
34. <TextView
35. android:id="@+id/second_tv"
36. android:layout_width="wrap_content"
37. android:layout_height="wrap_content"
38. android:layout_centerVertical="true"
39. android:layout_toRightOf="@id/second_pv"
40. android:text="秒"
41. android:textColor="#ffaa33"
42. android:textSize="26sp"
43. android:textStyle="bold"/>
44. </RelativeLayout>
46. </RelativeLayout>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:background="#000000" >    <RelativeLayout        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_centerInParent="true"        android:background="#ffffff" >        <com.jingchen.timerpicker.PickerView            android:id="@+id/minute_pv"            android:layout_width="80dp"            android:layout_height="160dp" />        <TextView            android:id="@+id/minute_tv"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_centerVertical="true"            android:layout_toRightOf="@id/minute_pv"            android:text="分"            android:textColor="#ffaa33"            android:textSize="26sp"            android:textStyle="bold" />        <com.jingchen.timerpicker.PickerView            android:id="@+id/second_pv"            android:layout_width="80dp"            android:layout_height="160dp"            android:layout_toRightOf="@id/minute_tv" />        <TextView            android:id="@+id/second_tv"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_centerVertical="true"            android:layout_toRightOf="@id/second_pv"            android:text="秒"            android:textColor="#ffaa33"            android:textSize="26sp"            android:textStyle="bold" />    </RelativeLayout></RelativeLayout>

两个PickerView两个TextView，很简单。

下面是MainActivity的代码：

[java] view plain copy print ?

1. packagecom.jingchen.timerpicker;
3. importjava.util.ArrayList;
4. importjava.util.List;
6. importcom.jingchen.timerpicker.PickerView.onSelectListener;
8. importandroid.app.Activity;
9. importandroid.os.Bundle;
10. importandroid.view.Menu;
11. importandroid.widget.TextView;
12. importandroid.widget.Toast;
14. publicclassMainActivityextendsActivity
15. {
17. PickerViewminute_pv;
18. PickerViewsecond_pv;
20. @Override
21. protectedvoidonCreate(BundlesavedInstanceState)
22. {
23. super.onCreate(savedInstanceState);
24. setContentView(R.layout.activity_main);
25. minute_pv=(PickerView)findViewById(R.id.minute_pv);
26. second_pv=(PickerView)findViewById(R.id.second_pv);
27. List<String>data=newArrayList<String>();
28. List<String>seconds=newArrayList<String>();
29. for(inti=0;i<10;i++)
30. {
31. data.add("0"+i);
32. }
33. for(inti=0;i<60;i++)
34. {
35. seconds.add(i<10?"0"+i:""+i);
36. }
37. minute_pv.setData(data);
38. minute_pv.setOnSelectListener(newonSelectListener()
39. {
41. @Override
42. publicvoidonSelect(Stringtext)
43. {
44. Toast.makeText(MainActivity.this,"选择了"+text+"分",
45. Toast.LENGTH_SHORT).show();
46. }
47. });
48. second_pv.setData(seconds);
49. second_pv.setOnSelectListener(newonSelectListener()
50. {
52. @Override
53. publicvoidonSelect(Stringtext)
54. {
55. Toast.makeText(MainActivity.this,"选择了"+text+"秒",
56. Toast.LENGTH_SHORT).show();
57. }
58. });
59. }
61. @Override
62. publicbooleanonCreateOptionsMenu(Menumenu)
63. {
64. getMenuInflater().inflate(R.menu.main,menu);
65. returntrue;
66. }
68. }

package com.jingchen.timerpicker;import java.util.ArrayList;import java.util.List;import com.jingchen.timerpicker.PickerView.onSelectListener;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity{PickerView minute_pv;PickerView second_pv;@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);minute_pv = (PickerView) findViewById(R.id.minute_pv);second_pv = (PickerView) findViewById(R.id.second_pv);List<String> data = new ArrayList<String>();List<String> seconds = new ArrayList<String>();for (int i = 0; i < 10; i++){data.add("0" + i);}for (int i = 0; i < 60; i++){seconds.add(i < 10 ? "0" + i : "" + i);}minute_pv.setData(data);minute_pv.setOnSelectListener(new onSelectListener(){@Overridepublic void onSelect(String text){Toast.makeText(MainActivity.this, "选择了 " + text + " 分",Toast.LENGTH_SHORT).show();}});second_pv.setData(seconds);second_pv.setOnSelectListener(new onSelectListener(){@Overridepublic void onSelect(String text){Toast.makeText(MainActivity.this, "选择了 " + text + " 秒",Toast.LENGTH_SHORT).show();}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu){getMenuInflater().inflate(R.menu.main, menu);return true;}}

OK了，自定义自己的TimerPicker就是这么简单~

源码下载

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