4.TableLayout、回调接口

会话详情页


listview条目布局

TableLayout是一行几列的意思
  1. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  2.     android:layout_width="match_parent"
  3.     android:layout_height="wrap_content"
  4.     android:orientation="vertical" >
  6.     
  7.     <!--   android:shrinkColumns="0"  压缩第0列，当第0列的内容过多时，不至于将其他列的内容，挤出屏幕  -->
  8.     <TableLayout
  9.         android:id="@+id/tl_receive"
  10.         android:layout_width="match_parent"
  11.         android:shrinkColumns="0"
  12.         android:layout_height="wrap_content" >
  14.         <TableRow android:layout_height="wrap_content" >
  16.             <TextView
  17.                 android:id="@+id/tv_msg_receive"
  18.                 android:layout_width="wrap_content"
  19.                 android:layout_height="wrap_content"
  20.                 android:background="@drawable/receive_msg_bubble"
  21.                 android:text="asdfasdfasdfasdfasdfsdfadfadfasdfasfsdfadffad" />
  23.             <TextView
  24.                 android:id="@+id/tv_date_receive"
  25.                 android:layout_width="wrap_content"
  26.                 android:layout_height="match_parent"
  27.                 android:gravity="bottom"
  28.                 android:text="2014/10/10" />
  29.         </TableRow>
  30.     </TableLayout>
  31.     
  32.     <!--   android:shrinkColumns="1"  压缩第0列，当第0列的内容过多时，不至于将其他列的内容，挤出屏幕  -->
  33.     <TableLayout
  34.         android:id="@+id/tl_send"
  35.         android:layout_width="match_parent"
  36.         android:shrinkColumns="1"
  37.         android:layout_height="wrap_content" >
  39.         <TableRow android:layout_height="wrap_content" 
  40.             android:gravity="right">
  42.             <TextView
  43.                 android:id="@+id/tv_date_send"
  44.                 android:layout_width="wrap_content"
  45.                 android:layout_height="match_parent"
  46.                 android:gravity="bottom"
  47.                 android:text="2014/10/10" />
  48.             
  49.             <TextView
  50.                 android:id="@+id/tv_msg_send"
  51.                 android:layout_width="wrap_content"
  52.                 android:layout_height="wrap_content"
  53.                 android:background="@drawable/send_msg_bubble"
  54.                 android:text="sfsdfadadsadsfasdfadfffad" />
  56.             
  57.         </TableRow>
  58.     </TableLayout>
  59. <!-- 另一种实现 方式  -->
  60. <!-- <LinearLayout 
  61.     android:layout_width="match_parent"
  62.     android:layout_height="wrap_content"
  63.     android:gravity="right"
  64.     >
  65.     
  66.     <LinearLayout 
  67.         android:layout_width="wrap_content"
  68.         android:layout_height="wrap_content"
  69.         >
  70.         
  71.          <TextView
  72.                 android:layout_width="wrap_content"
  73.                 android:layout_height="match_parent"
  74.                 android:gravity="bottom"
  75.                 android:text="2014/10/10" />
  76.          
  77.          <TextView
  78.                 android:layout_width="0dp"
  79.                 android:layout_height="wrap_content"
  80.                 android:layout_weight="2"
  81.                 android:background="@drawable/send_msg_bubble"
  82.                 android:text="asdfdf" />
  83.     </LinearLayout>
  84.     
  85.     </LinearLayout> -->
  86.     
  87. </LinearLayout>
代码：
  1. public class ConversationDetail extends Activity implements OnClickListener{
  3. 	/**
  4. 	 *联系人的电话号码 
  5. 	 */
  6. 	private String address;
  7. 	private Context ctx;
  8. 	
  9. 	private ListView listView;
  10. 	
  11. 	private EditText inputMsg;
  12. 	
  13. 	@Override
  14. 	protected void onCreate(Bundle savedInstanceState) {
  15. 		super.onCreate(savedInstanceState);
  16. 		
  17. 		ctx = this;
  18. 		
  19. 		address = getIntent().getStringExtra("address");
  20. 		if(address == null){
  21. 			throw new RuntimeException("联系人是空，我不知道显示哪个会话记录");
  22. 		}
  23. 		
  24. 		setContentView(R.layout.activity_conversation_detail);
  25. 		
  26. 		init();
  27. 		
  28. 		listView = (ListView) findViewById(R.id.lv_conversation_detail);
  29. 		adapter = new MyListAdapter(this, null);
  30. 		listView.setAdapter(adapter);
  31. 		//设置listView条目之间的分隔线为null ，即，不要分隔线
  32. 		listView.setDivider(null);
  33. 		
  34. 		prepareData();
  35. 	}
  37. 	private void prepareData() {
  38. 		MyQueryHandler
    1. public class MyQueryHandler extends AsyncQueryHandler{
    3. 	public MyQueryHandler(ContentResolver cr) {
    4. 		super(cr);
    5. 	}
    6. 	@Override
    7. 	protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
    8. 		
    9. 		System.out.println("onQueryComplete : token:"+token);
    10. 		System.out.println("onQueryComplete : cookie:"+cookie);
    11. 		Tools.printCursor(cursor);
    12. 		
    13. 		if(cookie!=null && cookie instanceof CursorAdapter){
    14. 			CursorAdapter adapter = (CursorAdapter) cookie;
    15. 			// 给adapter 设置新的cursor
    16. 			adapter.changeCursor(cursor);
    17. 		}
    18. 		
    19. 		if(cursorChangedListener!=null){
    20. 			cursorChangedListener.onCursorChanged(token, cookie, cursor);
    21. 		}
    22. 		
    23. 	}
    24. 	
    25. 	
    26. 	public IOnCursorChangedListener getCursorChangedListener() {
    27. 		return cursorChangedListener;
    28. 	}
    30. 	public void setOnCursorChangedListener(IOnCursorChangedListener cursorChangedListener) {
    31. 		this.cursorChangedListener = cursorChangedListener;
    32. 	}
    35. 	private IOnCursorChangedListener cursorChangedListener;
    36. 	
    37. 	/**
    38. 	 * 声明，cursor改变时的监听接口
    39. 	 * @author Administrator
    40. 	 *
    41. 	 */
    42. 	public interface IOnCursorChangedListener{
    43. 		
    44. 		void onCursorChanged(int token, Object cookie, Cursor cursor);
    45. 	}
    46. 	
    47. }
    //回调接口写法：这样就把adapter有回传回来了
  41. 		MyQueryHandler myQueryHandler = new MyQueryHandler(getContentResolver());
  42. 		myQueryHandler.setOnCursorChangedListener(new MyQueryHandler.IOnCursorChangedListener() {
  43. 			
  44. 			@Override
  45. 			/**
  46. 			 *  当adapter 获得 cursor 的时候，回调此方法 
  47. 			 */
  48. 			public void onCursorChanged(int token, Object cookie, Cursor cursor) {
  49. 				// 让listview 显示最后一行
  50. 				listView.setSelection(adapter.getCount()-1);
  51. 			}
  52. 		});
  53. 		myQueryHandler.startQuery(99, adapter, MyConstants.URI_SMS, projection, " address="+address, null, " date ");
  54. 	}
  56. 	/**
  57. 	 * 显示会话详情，所需要的列
  58. 	 */
  59. 	private String[] projection={
  60. 			"_id","body","date","type"
  61. 	};
  62. 	
  63. 	/**
  64. 	 * 短信内容所在列的索引值  为 1
  65. 	 */
  66. 	private final int INDEX_BODY = 1;
  67. 	private final int INDEX_DATE = 2;
  68. 	private final int INDEX_TYPE = 3;
  69. 	
  70. 	private void init() {
  71. 		TextView title = (TextView) findViewById(R.id.tv_title_conversation_detail);
  72. 		
  73. 		String name = Tools.findNameByNumber(ctx, address);
  74. 		if(name !=null){ // 有此联系人
  75. 			title.setText(name);
  76. 		}else{ // 无此联系人
  77. 			title.setText(address);
  78. 		}
  79. 		
  80. 		findViewById(R.id.btn_back).setOnClickListener(this);
  81. 		findViewById(R.id.btn_ok).setOnClickListener(this);
  82. 		
  83. 		inputMsg = (EditText) findViewById(R.id.et_input_msg_conversation_detail);
  84. 	}
  86. 	@Override
  87. 	/**
  88. 	 * 响应按钮的点击事件
  89. 	 */
  90. 	public void onClick(View v) {
  91. 		switch (v.getId()) {
  92. 		case R.id.btn_back: // 后退按钮
  93. 			
  94. 			finish();
  95. 			
  96. 			break;
  97. 		case R.id.btn_ok: // 确定按钮
  98. 			
  99. 			//先判断输入的是否有内容，
  100. 			//如果有内容的话，就将内容以短信的形式发送出去，
  101. 			String msg = inputMsg.getText().toString();
  102. 			if(TextUtils.isEmpty(msg.trim())){
  103. 				Toast.makeText(ctx, "请输入短信内容", 0).show();
  104. 				return ;
  105. 			}
  106. 			// 发送短信
  107. 			Tools.sendMessage(ctx,msg,address);
  108. 			//清空输入框
  109. 			inputMsg.setText("");
  110. 			// 隐藏输入法键盘
  111. 			InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
  112. 			// 隐藏输入法的 API 
  113. 			imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);
  114. 			
  115. 			break;
  117. 		}
  118. 	}
  119. 	
  120. 	private MyListAdapter adapter;
  121. 	
  122. 	private class MyListAdapter extends CursorAdapter{
  124. 		public MyListAdapter(Context context, Cursor c) {
  125. 			super(context, c);
  126. 		}
  128. 		
  129. 		@Override
  130. 		/**
  131. 		 * 当内容发生改变的时候，回调此方法
  132. 		 */
  133. 		protected void onContentChanged() {
  134. 			// super 里面，做了重新查询的动作
  135. 			super.onContentChanged();
  136. 			// 让listView 显示最后一行
  137. 			listView.setSelection(getCount()-1);
  138. 			
  139. 		}
  140. 		
  141. 		@Override
  142. 		public View newView(Context context, Cursor cursor, ViewGroup parent) {
  143. 			View view =View.inflate(ctx, R.layout.list_item_conversation_detail, null);
  144. 			
  145. 			ViewHolder vh = new ViewHolder();
  146. 			vh.tlReceive = (TableLayout) view.findViewById(R.id.tl_receive);
  147. 			vh.msgReceive = (TextView) view.findViewById(R.id.tv_msg_receive);
  148. 			vh.dateReceive = (TextView) view.findViewById(R.id.tv_date_receive);
  149. 			
  150. 			vh.tlSend = (TableLayout) view.findViewById(R.id.tl_send);
  151. 			vh.msgSend = (TextView) view.findViewById(R.id.tv_msg_send);
  152. 			vh.dateSend = (TextView) view.findViewById(R.id.tv_date_send);
  153. 			view.setTag(vh);
  154. 			
  155. 			return view;
  156. 		}
  158. 		@Override
  159. 		public void bindView(View view, Context context, Cursor cursor) {
  160. 			ViewHolder vh = (ViewHolder) view.getTag();
  161. 			// 给listView条目设置内容
  162. 			
  163. 			int type = cursor.getInt(INDEX_TYPE);// 获得短信类型
  164. 			
  165. 			String text = cursor.getString(INDEX_BODY);//获得短信内容
  166. 			
  167. 			long when = cursor.getLong(INDEX_DATE);// 获得日期
  168. 			String dateStr = DateFormat.getDateFormat(ctx).format(when);
  169. 			
  170. 			
  171. 			if(type == MyConstants.TYPE_RECEIVE){ // 接收到的短信
  172. 				vh.tlReceive.setVisibility(View.VISIBLE);
  173. 				vh.tlSend.setVisibility(View.GONE);
  174. 				//设置短信内容
  175. 				vh.msgReceive.setText(text);
  176. 				//设置日期
  177. 				vh.dateReceive.setText(dateStr);
  178. 				
  179. 			}else{
  180. 				vh.tlReceive.setVisibility(View.GONE);
  181. 				vh.tlSend.setVisibility(View.VISIBLE);
  182. 				
  183. 				//设置短信内容
  184. 				vh.msgSend.setText(text);
  185. 				
  186. 				vh.dateSend.setText(dateStr);
  187. 			}
  188. 		}
  189. 	}
  190. 	
  191. 	private class ViewHolder {
  192. 		
  193. 		public TableLayout tlReceive;
  194. 		public TextView msgReceive;
  195. 		public TextView dateReceive;
  196. 		
  197. 		public TableLayout tlSend;
  198. 		public TextView msgSend;
  199. 		public TextView dateSend;
  200. 		
  201. 	}
  202. 	
  203. }





posted @ 2015-11-25 15:42  梦和远方  阅读(212)  评论(0)    收藏  举报