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android之OnScrollListener 上拉刷新

热度：56   发布时间：2016-05-01 20:42:38.0
android之OnScrollListener 下拉刷新

1.首先创建一个头部xml文件?

Xml代码??收藏代码
  1. <?xml?version="1.0"?encoding="utf-8"?>??
  2. ??
  3. <!--?ListView的头部?-->??
  4. <LinearLayout??
  5. ??xmlns:android="http://schemas.android.com/apk/res/android"??
  6. ??android:layout_width="fill_parent"??
  7. ??android:layout_height="wrap_content"??
  8. ?>??
  9. ????
  10. ??<!--?内容?-->??
  11. ??<RelativeLayout??
  12. ??android:layout_width="fill_parent"??
  13. ??android:layout_height="wrap_content"??
  14. ??android:id="@+id/head_contentLayout"??
  15. ??android:paddingLeft="30dp"??
  16. ??>??
  17. ????
  18. ??<!--?箭头图像、进度条?-->??
  19. ??<FrameLayout??
  20. ??android:layout_width="wrap_content"??
  21. ??android:layout_height="wrap_content"??
  22. ??android:layout_alignParentLeft="true"??
  23. ??android:layout_centerVertical="true"??
  24. ??>??
  25. ????
  26. ??<!--?箭头?-->??
  27. ??<ImageView??
  28. ??android:layout_width="wrap_content"??
  29. ??android:layout_height="wrap_content"??
  30. ??android:layout_gravity="center"??
  31. ??android:src="@drawable/pull_down_arrow"??
  32. ??android:id="@+id/head_arrowImageView"??
  33. ??/>??
  34. ????
  35. ??<!--?进度条?-->??
  36. ??<ProgressBar??
  37. ??android:layout_width="wrap_content"??
  38. ??android:layout_height="wrap_content"??
  39. ??style="?android:attr/progressBarStyleSmall"??
  40. ??android:layout_gravity="center"??
  41. ??android:id="@+id/head_progressBar"??
  42. ????
  43. ??android:visibility="gone"??
  44. ??/>??
  45. ????
  46. ??</FrameLayout>??
  47. ????
  48. ??<!--?提示、最近更新?-->??
  49. ??<LinearLayout??
  50. ??android:layout_width="wrap_content"??
  51. ??android:layout_height="wrap_content"??
  52. ??android:layout_centerHorizontal="true"??
  53. ??android:orientation="vertical"??
  54. ??android:gravity="center_horizontal"??
  55. ??>??
  56. ????
  57. ??<!--?提示?-->??
  58. ??<TextView??
  59. ??android:layout_width="wrap_content"??
  60. ??android:layout_height="wrap_content"??
  61. ??android:text="下拉刷新"??
  62. ??android:textColor="@color/white"??
  63. ??android:textSize="20sp"??
  64. ??android:id="@+id/head_tipsTextView"??
  65. ??/>??
  66. ????
  67. ??<!--?最近更新?-->??
  68. ??<TextView??
  69. ??android:layout_width="wrap_content"??
  70. ??android:layout_height="wrap_content"??
  71. ??android:id="@+id/head_lastUpdatedTextView"??
  72. ??android:text="上次更新"??
  73. ??android:textColor="@color/gold"??
  74. ??android:textSize="10sp"??
  75. ??/>??
  76. ????
  77. ??</LinearLayout>??
  78. ????
  79. ????
  80. ??</RelativeLayout>??
  81. ????
  82. ????
  83. </LinearLayout>??

2.然后写一个class：?

Java代码??收藏代码
  1. package?com.laohuai.appdemo.customui.ui;??
  2. ??
  3. import?java.util.Date;??
  4. ??
  5. import?com.laohuai.appdemo.customui.R;??
  6. ??
  7. import?android.content.Context;??
  8. import?android.util.AttributeSet;??
  9. import?android.util.Log;??
  10. import?android.view.LayoutInflater;??
  11. import?android.view.MotionEvent;??
  12. import?android.view.View;??
  13. import?android.view.ViewGroup;??
  14. import?android.view.animation.LinearInterpolator;??
  15. import?android.view.animation.RotateAnimation;??
  16. import?android.widget.AbsListView;??
  17. import?android.widget.BaseAdapter;??
  18. import?android.widget.ImageView;??
  19. import?android.widget.LinearLayout;??
  20. import?android.widget.ListView;??
  21. import?android.widget.AbsListView.OnScrollListener;??
  22. import?android.widget.ProgressBar;??
  23. import?android.widget.TextView;??
  24. ??
  25. public?class?MyListView?extends?ListView?implements?OnScrollListener?{??
  26. ??
  27. ????private?static?final?String?TAG?=?"listview";??
  28. ??
  29. ????private?final?static?int?RELEASE_To_REFRESH?=?0;??
  30. ????private?final?static?int?PULL_To_REFRESH?=?1;??
  31. ????private?final?static?int?REFRESHING?=?2;??
  32. ????private?final?static?int?DONE?=?3;??
  33. ????private?final?static?int?LOADING?=?4;??
  34. ??
  35. ????//?实际的padding的距离与界面上偏移距离的比例??
  36. ????private?final?static?int?RATIO?=?3;??
  37. ??
  38. ????private?LayoutInflater?inflater;??
  39. ??
  40. ????private?LinearLayout?headView;??
  41. ??
  42. ????private?TextView?tipsTextview;??
  43. ????private?TextView?lastUpdatedTextView;??
  44. ????private?ImageView?arrowImageView;??
  45. ????private?ProgressBar?progressBar;??
  46. ??
  47. ??
  48. ????private?RotateAnimation?animation;??
  49. ????private?RotateAnimation?reverseAnimation;??
  50. ??
  51. ????//?用于保证startY的值在一个完整的touch事件中只被记录一次??
  52. ????private?boolean?isRecored;??
  53. ??
  54. ????private?int?headContentWidth;??
  55. ????private?int?headContentHeight;??
  56. ??
  57. ????private?int?startY;??
  58. ????private?int?firstItemIndex;??
  59. ??
  60. ????private?int?state;??
  61. ??
  62. ????private?boolean?isBack;??
  63. ??
  64. ????private?OnRefreshListener?refreshListener;??
  65. ??
  66. ????private?boolean?isRefreshable;??
  67. ??
  68. ????public?MyListView(Context?context)?{??
  69. ????????super(context);??
  70. ????????init(context);??
  71. ????}??
  72. ??
  73. ????public?MyListView(Context?context,?AttributeSet?attrs)?{??
  74. ????????super(context,?attrs);??
  75. ????????init(context);??
  76. ????}??
  77. ??
  78. ????private?void?init(Context?context)?{??
  79. ????????setCacheColorHint(context.getResources().getColor(R.color.transparent));??
  80. ????????inflater?=?LayoutInflater.from(context);??
  81. ??
  82. ????????headView?=?(LinearLayout)?inflater.inflate(R.layout.head,?null);??
  83. ??
  84. ????????arrowImageView?=?(ImageView)?headView??
  85. ????????????????.findViewById(R.id.head_arrowImageView);??
  86. ????????arrowImageView.setMinimumWidth(70);??
  87. ????????arrowImageView.setMinimumHeight(50);??
  88. ????????progressBar?=?(ProgressBar)?headView??
  89. ????????????????.findViewById(R.id.head_progressBar);??
  90. ????????tipsTextview?=?(TextView)?headView.findViewById(R.id.head_tipsTextView);??
  91. ????????lastUpdatedTextView?=?(TextView)?headView??
  92. ????????????????.findViewById(R.id.head_lastUpdatedTextView);??
  93. ??
  94. ????????measureView(headView);??
  95. ????????headContentHeight?=?headView.getMeasuredHeight();??
  96. ????????headContentWidth?=?headView.getMeasuredWidth();??
  97. ??
  98. ????????headView.setPadding(0,?-1?*?headContentHeight,?0,?0);??
  99. ????????headView.invalidate();??
  100. ??
  101. ????????Log.v("size",?"width:"?+?headContentWidth?+?"?height:"??
  102. ????????????????+?headContentHeight);??
  103. ??
  104. ????????addHeaderView(headView,?null,?false);??
  105. ????????setOnScrollListener(this);??
  106. ??
  107. ????????animation?=?new?RotateAnimation(0,?-180,??
  108. ????????????????RotateAnimation.RELATIVE_TO_SELF,?0.5f,??
  109. ????????????????RotateAnimation.RELATIVE_TO_SELF,?0.5f);??
  110. ????????animation.setInterpolator(new?LinearInterpolator());??
  111. ????????animation.setDuration(250);??
  112. ????????animation.setFillAfter(true);??
  113. ??
  114. ????????reverseAnimation?=?new?RotateAnimation(-180,?0,??
  115. ????????????????RotateAnimation.RELATIVE_TO_SELF,?0.5f,??
  116. ????????????????RotateAnimation.RELATIVE_TO_SELF,?0.5f);??
  117. ????????reverseAnimation.setInterpolator(new?LinearInterpolator());??
  118. ????????reverseAnimation.setDuration(200);??
  119. ????????reverseAnimation.setFillAfter(true);??
  120. ??
  121. ????????state?=?DONE;??
  122. ????????isRefreshable?=?false;??
  123. ????}??
  124. ??
  125. ????public?void?onScroll(AbsListView?arg0,?int?firstVisiableItem,?int?arg2,??
  126. ????????????int?arg3)?{??
  127. ????????firstItemIndex?=?firstVisiableItem;??
  128. ????}??
  129. ??
  130. ????public?void?onScrollStateChanged(AbsListView?arg0,?int?arg1)?{??
  131. ????}??
  132. ??
  133. ????public?boolean?onTouchEvent(MotionEvent?event)?{??
  134. ??
  135. ????????if?(isRefreshable)?{??
  136. ????????????switch?(event.getAction())?{??
  137. ????????????case?MotionEvent.ACTION_DOWN:??
  138. ????????????????if?(firstItemIndex?==?0?&&?!isRecored)?{??
  139. ????????????????????isRecored?=?true;??
  140. ????????????????????startY?=?(int)?event.getY();??
  141. ????????????????????Log.v(TAG,?"在down时候记录当前位置‘");??
  142. ????????????????}??
  143. ????????????????break;??
  144. ??
  145. ????????????case?MotionEvent.ACTION_UP:??
  146. ??
  147. ????????????????if?(state?!=?REFRESHING?&&?state?!=?LOADING)?{??
  148. ????????????????????if?(state?==?DONE)?{??
  149. ????????????????????????//?什么都不做??
  150. ????????????????????}??
  151. ????????????????????if?(state?==?PULL_To_REFRESH)?{??
  152. ????????????????????????state?=?DONE;??
  153. ????????????????????????changeHeaderViewByState();??
  154. ??
  155. ????????????????????????Log.v(TAG,?"由下拉刷新状态，到done状态");??
  156. ????????????????????}??
  157. ????????????????????if?(state?==?RELEASE_To_REFRESH)?{??
  158. ????????????????????????state?=?REFRESHING;??
  159. ????????????????????????changeHeaderViewByState();??
  160. ????????????????????????onRefresh();??
  161. ??
  162. ????????????????????????Log.v(TAG,?"由松开刷新状态，到done状态");??
  163. ????????????????????}??
  164. ????????????????}??
  165. ??
  166. ????????????????isRecored?=?false;??
  167. ????????????????isBack?=?false;??
  168. ??
  169. ????????????????break;??
  170. ??
  171. ????????????case?MotionEvent.ACTION_MOVE:??
  172. ????????????????int?tempY?=?(int)?event.getY();??
  173. ??
  174. ????????????????if?(!isRecored?&&?firstItemIndex?==?0)?{??
  175. ????????????????????Log.v(TAG,?"在move时候记录下位置");??
  176. ????????????????????isRecored?=?true;??
  177. ????????????????????startY?=?tempY;??
  178. ????????????????}??
  179. ??
  180. ????????????????if?(state?!=?REFRESHING?&&?isRecored?&&?state?!=?LOADING)?{??
  181. ??
  182. ????????????????????//?保证在设置padding的过程中，当前的位置一直是在head，否则如果当列表超出屏幕的话，当在上推的时候，列表会同时进行滚动??
  183. ??
  184. ????????????????????//?可以松手去刷新了??
  185. ????????????????????if?(state?==?RELEASE_To_REFRESH)?{??
  186. ??
  187. ????????????????????????setSelection(0);??
  188. ??
  189. ????????????????????????//?往上推了，推到了屏幕足够掩盖head的程度，但是还没有推到全部掩盖的地步??
  190. ????????????????????????if?(((tempY?-?startY)?/?RATIO?<?headContentHeight)??
  191. ????????????????????????????????&&?(tempY?-?startY)?>?0)?{??
  192. ????????????????????????????state?=?PULL_To_REFRESH;??
  193. ????????????????????????????changeHeaderViewByState();??
  194. ??
  195. ????????????????????????????Log.v(TAG,?"由松开刷新状态转变到下拉刷新状态");??
  196. ????????????????????????}??
  197. ????????????????????????//?一下子推到顶了??
  198. ????????????????????????else?if?(tempY?-?startY?<=?0)?{??
  199. ????????????????????????????state?=?DONE;??
  200. ????????????????????????????changeHeaderViewByState();??
  201. ??
  202. ????????????????????????????Log.v(TAG,?"由松开刷新状态转变到done状态");??
  203. ????????????????????????}??
  204. ????????????????????????//?往下拉了，或者还没有上推到屏幕顶部掩盖head的地步??
  205. ????????????????????????else?{??
  206. ????????????????????????????//?不用进行特别的操作，只用更新paddingTop的值就行了??
  207. ????????????????????????}??
  208. ????????????????????}??
  209. ????????????????????//?还没有到达显示松开刷新的时候,DONE或者是PULL_To_REFRESH状态??
  210. ????????????????????if?(state?==?PULL_To_REFRESH)?{??
  211. ??
  212. ????????????????????????setSelection(0);??
  213. ??
  214. ????????????????????????//?下拉到可以进入RELEASE_TO_REFRESH的状态??
  215. ????????????????????????if?((tempY?-?startY)?/?RATIO?>=?headContentHeight)?{??
  216. ????????????????????????????state?=?RELEASE_To_REFRESH;??
  217. ????????????????????????????isBack?=?true;??
  218. ????????????????????????????changeHeaderViewByState();??
  219. ??
  220. ????????????????????????????Log.v(TAG,?"由done或者下拉刷新状态转变到松开刷新");??
  221. ????????????????????????}??
  222. ????????????????????????//?上推到顶了??
  223. ????????????????????????else?if?(tempY?-?startY?<=?0)?{??
  224. ????????????????????????????state?=?DONE;??
  225. ????????????????????????????changeHeaderViewByState();??
  226. ??
  227. ????????????????????????????Log.v(TAG,?"由DOne或者下拉刷新状态转变到done状态");??
  228. ????????????????????????}??
  229. ????????????????????}??
  230. ??
  231. ????????????????????//?done状态下??
  232. ????????????????????if?(state?==?DONE)?{??
  233. ????????????????????????if?(tempY?-?startY?>?0)?{??
  234. ????????????????????????????state?=?PULL_To_REFRESH;??
  235. ????????????????????????????changeHeaderViewByState();??
  236. ????????????????????????}??
  237. ????????????????????}??
  238. ??
  239. ????????????????????//?更新headView的size??
  240. ????????????????????if?(state?==?PULL_To_REFRESH)?{??
  241. ????????????????????????headView.setPadding(0,?-1?*?headContentHeight??
  242. ????????????????????????????????+?(tempY?-?startY)?/?RATIO,?0,?0);??
  243. ??
  244. ????????????????????}??
  245. ??
  246. ????????????????????//?更新headView的paddingTop??
  247. ????????????????????if?(state?==?RELEASE_To_REFRESH)?{??
  248. ????????????????????????headView.setPadding(0,?(tempY?-?startY)?/?RATIO??
  249. ????????????????????????????????-?headContentHeight,?0,?0);??
  250. ????????????????????}??
  251. ??
  252. ????????????????}??
  253. ??
  254. ????????????????break;??
  255. ????????????}??
  256. ????????}??
  257. ??
  258. ????????return?super.onTouchEvent(event);??
  259. ????}??
  260. ??
  261. ????//?当状态改变时候，调用该方法，以更新界面??
  262. ????private?void?changeHeaderViewByState()?{??
  263. ????????switch?(state)?{??
  264. ????????case?RELEASE_To_REFRESH:??
  265. ????????????arrowImageView.setVisibility(View.VISIBLE);??
  266. ????????????progressBar.setVisibility(View.GONE);??
  267. ????????????tipsTextview.setVisibility(View.VISIBLE);??
  268. ????????????lastUpdatedTextView.setVisibility(View.VISIBLE);??
  269. ??
  270. ????????????arrowImageView.clearAnimation();??
  271. ????????????arrowImageView.startAnimation(animation);??
  272. ??
  273. ????????????tipsTextview.setText("松开刷新");??
  274. ??
  275. ????????????Log.v(TAG,?"当前状态，松开刷新");??
  276. ????????????break;??
  277. ????????case?PULL_To_REFRESH:??
  278. ????????????progressBar.setVisibility(View.GONE);??
  279. ????????????tipsTextview.setVisibility(View.VISIBLE);??
  280. ????????????lastUpdatedTextView.setVisibility(View.VISIBLE);??
  281. ????????????arrowImageView.clearAnimation();??
  282. ????????????arrowImageView.setVisibility(View.VISIBLE);??
  283. ????????????//?是由RELEASE_To_REFRESH状态转变来的??
  284. ????????????if?(isBack)?{??
  285. ????????????????isBack?=?false;??
  286. ????????????????arrowImageView.clearAnimation();??
  287. ????????????????arrowImageView.startAnimation(reverseAnimation);??
  288. ??
  289. ????????????????tipsTextview.setText("下拉刷新");??
  290. ????????????}?else?{??
  291. ????????????????tipsTextview.setText("下拉刷新");??
  292. ????????????}??
  293. ????????????Log.v(TAG,?"当前状态，下拉刷新");??
  294. ????????????break;??
  295. ??
  296. ????????case?REFRESHING:??
  297. ??
  298. ????????????headView.setPadding(0,?0,?0,?0);??
  299. ??
  300. ????????????progressBar.setVisibility(View.VISIBLE);??
  301. ????????????arrowImageView.clearAnimation();??
  302. ????????????arrowImageView.setVisibility(View.GONE);??
  303. ????????????tipsTextview.setText("正在刷新...");??
  304. ????????????lastUpdatedTextView.setVisibility(View.VISIBLE);??
  305. ??
  306. ????????????Log.v(TAG,?"当前状态,正在刷新...");??
  307. ????????????break;??
  308. ????????case?DONE:??
  309. ????????????headView.setPadding(0,?-1?*?headContentHeight,?0,?0);??
  310. ??
  311. ????????????progressBar.setVisibility(View.GONE);??
  312. ????????????arrowImageView.clearAnimation();??
  313. ????????????arrowImageView.setImageResource(R.drawable.pull_down_arrow);??
  314. ????????????tipsTextview.setText("下拉刷新");??
  315. ????????????lastUpdatedTextView.setVisibility(View.VISIBLE);??
  316. ??
  317. ????????????Log.v(TAG,?"当前状态，done");??
  318. ????????????break;??
  319. ????????}??
  320. ????}??
  321. ??
  322. ????public?void?setonRefreshListener(OnRefreshListener?refreshListener)?{??
  323. ????????this.refreshListener?=?refreshListener;??
  324. ????????isRefreshable?=?true;??
  325. ????}??
  326. ??
  327. ????public?interface?OnRefreshListener?{??
  328. ????????public?void?onRefresh();??
  329. ????}??
  330. ??
  331. ????public?void?onRefreshComplete()?{??
  332. ????????state?=?DONE;??
  333. ????????lastUpdatedTextView.setText("最近更新:"?+?new?Date().toLocaleString());??
  334. ????????changeHeaderViewByState();??
  335. ????}??
  336. ??
  337. ????private?void?onRefresh()?{??
  338. ????????if?(refreshListener?!=?null)?{??
  339. ????????????refreshListener.onRefresh();??
  340. ????????}??
  341. ????}??
  342. ??
  343. ????//?此方法直接照搬自网络上的一个下拉刷新的demo，此处是“估计”headView的width以及height??
  344. ????private?void?measureView(View?child)?{??
  345. ????????ViewGroup.LayoutParams?p?=?child.getLayoutParams();??
  346. ????????if?(p?==?null)?{??
  347. ????????????p?=?new?ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT,??
  348. ????????????????????ViewGroup.LayoutParams.WRAP_CONTENT);??
  349. ????????}??
  350. ????????int?childWidthSpec?=?ViewGroup.getChildMeasureSpec(0,?0?+?0,?p.width);??
  351. ????????int?lpHeight?=?p.height;??
  352. ????????int?childHeightSpec;??
  353. ????????if?(lpHeight?>?0)?{??
  354. ????????????childHeightSpec?=?MeasureSpec.makeMeasureSpec(lpHeight,??
  355. ????????????????????MeasureSpec.EXACTLY);??
  356. ????????}?else?{??
  357. ????????????childHeightSpec?=?MeasureSpec.makeMeasureSpec(0,??
  358. ????????????????????MeasureSpec.UNSPECIFIED);??
  359. ????????}??
  360. ????????child.measure(childWidthSpec,?childHeightSpec);??
  361. ????}??
  362. ??
  363. ????public?void?setAdapter(BaseAdapter?adapter)?{??
  364. ????????lastUpdatedTextView.setText("最近更新:"?+?new?Date().toLocaleString());??
  365. ????????super.setAdapter(adapter);??
  366. ????}??
  367. ??
  368. }??

3.在main.xml 中调用上面的这个class：?

Xml代码??收藏代码
  1. <?xml?version="1.0"?encoding="utf-8"?>??
  2. <LinearLayout?xmlns:android="http://schemas.android.com/apk/res/android"??
  3. ????android:layout_width="fill_parent"??
  4. ????android:layout_height="fill_parent"??
  5. ????android:orientation="vertical"???
  6. ????android:background="#FFFFFF">??
  7. ??????
  8. ????<com.laohuai.appdemo.customui.ui.MyListView??
  9. ????android:layout_width="fill_parent"??
  10. ????android:layout_height="fill_parent"??
  11. ????android:id="@+id/listView"??
  12. ????android:listSelector="@android:color/transparent"??
  13. ????/>??
  14. ??????
  15. </LinearLayout>??


4.实现Activity：?

Java代码??收藏代码
  1. package?com.laohuai.appdemo.customui;??
  2. ??
  3. import?java.util.ArrayList;??
  4. import?java.util.HashMap;??
  5. import?java.util.List;??
  6. ??
  7. import?com.laohuai.appdemo.customui.ui.MyListView;??
  8. import?com.laohuai.appdemo.customui.ui.MyListView.OnRefreshListener;??
  9. ??
  10. import?android.app.Activity;??
  11. import?android.content.Context;??
  12. import?android.content.res.Resources;??
  13. import?android.os.AsyncTask;??
  14. import?android.os.Bundle;??
  15. import?android.view.LayoutInflater;??
  16. import?android.view.View;??
  17. import?android.view.ViewGroup;??
  18. import?android.widget.BaseAdapter;??
  19. import?android.widget.TextView;??
  20. ??
  21. public?class?MainActivity?extends?Activity?{??
  22. ????HashMap<String,?Object>?maps;??
  23. ????MyListView?listView;??
  24. ??
  25. ????public?void?onCreate(Bundle?savedInstanceState)?{??
  26. ????????super.onCreate(savedInstanceState);??
  27. ????????setContentView(R.layout.main);??
  28. ????????listView?=?(MyListView)?findViewById(R.id.listView);??
  29. ????????getData();??
  30. ????}??
  31. ??
  32. ????private?void?getData()?{??
  33. ????????List<HashMap<String,?Object>>?lists?=?new?ArrayList<HashMap<String,?Object>>();??
  34. ??
  35. ????????for?(int?i?=?0;?i?<?40;?i++)?{??
  36. ??
  37. ????????????maps?=?new?HashMap<String,?Object>();??
  38. ????????????maps.put("test",?"搞定了没有啊");??
  39. ??
  40. ????????????lists.add(maps);??
  41. ????????}??
  42. ????????final?ListAdapter?adapter?=?new?ListAdapter(MainActivity.this,?lists);??
  43. ????????listView.setAdapter(adapter);??
  44. ??
  45. ????????listView.setonRefreshListener(new?OnRefreshListener()?{??
  46. ????????????public?void?onRefresh()?{??
  47. ????????????????new?AsyncTask<Void,?Void,?Void>()?{??
  48. ????????????????????protected?Void?doInBackground(Void...?params)?{??
  49. ????????????????????????try?{??
  50. ????????????????????????????Thread.sleep(1000);??
  51. ????????????????????????}?catch?(Exception?e)?{??
  52. ????????????????????????????e.printStackTrace();??
  53. ????????????????????????}??
  54. ????????????????????????maps.get("刷新后添加的内容");??
  55. ????????????????????????return?null;??
  56. ????????????????????}??
  57. ??
  58. ????????????????????protected?void?onPostExecute(Void?result)?{??
  59. ????????????????????????adapter.notifyDataSetChanged();??
  60. ????????????????????????listView.onRefreshComplete();??
  61. ????????????????????}??
  62. ??
  63. ????????????????}.execute(null);??
  64. ????????????}??
  65. ????????});??
  66. ????}??
  67. ??
  68. ????class?ListAdapter?extends?BaseAdapter?{??
  69. ??
  70. ????????private?Context?mContext;??
  71. ????????private?List<HashMap<String,?Object>>?data;??
  72. ??
  73. ????????public?ListAdapter(Context?mContext,?List<HashMap<String,?Object>>?data)?{??
  74. ????????????super();??
  75. ????????????this.mContext?=?mContext;??
  76. ????????????this.data?=?data;??
  77. ????????}??
  78. ??
  79. ????????public?int?getCount()?{??
  80. ????????????//?TODO?Auto-generated?method?stub??
  81. ????????????return?data.size();??
  82. ????????}??
  83. ??
  84. ????????public?Object?getItem(int?position)?{??
  85. ????????????//?TODO?Auto-generated?method?stub??
  86. ????????????return?position;??
  87. ????????}??
  88. ??
  89. ????????public?long?getItemId(int?position)?{??
  90. ????????????//?TODO?Auto-generated?method?stub??
  91. ????????????return?position;??
  92. ????????}??
  93. ??
  94. ????????public?View?getView(int?position,?View?convertView,?ViewGroup?parent)?{??
  95. ????????????TextView?tv?=?new?TextView(getApplicationContext());??
  96. ????????????tv.setText((String)data.get(position).get("test"));??
  97. ????????????Resources?rs?=?getResources();??
  98. ????????????tv.setTextColor(rs.getColor(R.color.white));??
  99. ????????????return?tv;??
  100. ????????}??
  101. ??
  102. ????}??
  103. } ?

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