//封裝的適配器類?adapter public?class?NewJobAdapter?extends?BaseAdapter{ private?List<Map<String,?Object>>?data?=?null; private?LayoutInflater?mInflater?=?null; private?Context?mContext; public?NewJobAdapter(){ } public?NewJobAdapter(Context?context,?List<Map<String,?Object>>?list)?{ //?根據context上下文加載布局 this.mInflater?=?LayoutInflater.from(context); mContext?=?context; data?=?list; } @Override public?int?getCount()?{ //?在此適配器中所代表的數據集中的條目數 return?data.size(); } @Override public?Object?getItem(int?position)?{ //?獲取數據集中與指定索引對應的數據項 return?position; } @Override public?long?getItemId(int?position)?{ //?獲取在列表中與指定索引對應的行id return?position; } //?獲取一個在數據集中指定索引的視圖來顯示數據 @Override public?View?getView(int?position,?View?convertView,?ViewGroup?parent)?{ ViewHolder?holder?=?null; //?如果緩存convertView為空，則需要創建View if?(convertView?==?null)?{ holder?=?new?ViewHolder(); //?根據自定義的Item布局加載布局 convertView?=?mInflater.inflate(R.layout.item_list_new_job,?null); holder.img?=?(ImageView)?convertView.findViewById(R.id.id_img); holder.time?=?(TextView)?convertView.findViewById(R.id.id_time); holder.address?=?(TextView)?convertView.findViewById(R.id.id_address); holder.message?=?(TextView)?convertView.findViewById(R.id.id_message); holder.price?=?(TextView)?convertView.findViewById(R.id.id_price); //?將設置好的布局保存到緩存中，并將其設置在Tag里，以便后面方便取出Tag convertView.setTag(holder); }?else?{ holder?=?(ViewHolder)?convertView.getTag(); } holder.img.setBackgroundResource((Integer)?data.get(position).get("img")); holder.time.setText((String)?data.get(position).get("time")); holder.message.setText((String)?data.get(position).get("area")); holder.address.setText((String)?data.get(position).get("position")); return?convertView; } /***?ViewHolder靜態類*?圖片*?工作職位*?時間*?兼職地點*?價錢*?*/? static?class?ViewHolder?{ public?ImageView?img; public?TextView?message; public?TextView?time; public?TextView?address; public?TextView?price; } }//activity調用 public?class?NewJobActivity?extends?Activity?implements?OnItemClickListener{ private?List<Map<String,?Object>>?data?=?null; private?List<Map<String,?Object>>?list; private?ListView?mListView; private?NewJobAdapter?adapter; @Override protected?void?onCreate(Bundle?savedInstanceState)?{ super.onCreate(savedInstanceState); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.activity_new_job); mListView?=?(ListView)?findViewById(R.id.new_job_list); mListView.setOnItemClickListener(this); data?=?getData();//?獲取數據 adapter?=?new?NewJobAdapter(this,?data); mListView.setAdapter(adapter); } private?List<Map<String,?Object>>?getData(){ list?=?new?ArrayList<Map<String,?Object>>(); Map<String,?Object>?map; for(int?i=0;?i<20;?i++){ map?=?new?HashMap<String,?Object>(); map.put("time",?"2015-01-30"); map.put("img",?R.drawable.ic_launcher); map.put("area",?"三亞市區"); map.put("position",?"促銷員"); list.add(map); } return?list; } public?void?backClick(View?v){ NewJobActivity.this.finish(); } @Override public?void?onItemClick(AdapterView<?>?arg0,?View?arg1,?int?arg2,?long?arg3)?{ //?TODO?Auto-generated?method?stub //Toast.makeText(this,?""?+?arg2,?Toast.LENGTH_LONG).show(); } }//item_list <?xml?version="1.0"?encoding="utf-8"?> <LinearLayout?xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="match_parent"android:layout_height="match_parent"android:layout_marginBottom="3dp"android:orientation="vertical"?><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="60dp"android:background="@drawable/mm_listitem"android:gravity="center_vertical"?><ImageViewandroid:id="@+id/id_img"android:layout_width="55dp"android:layout_height="55dp"android:layout_alignParentLeft="true"android:layout_centerVertical="true"android:paddingLeft="5dp"android:src="@drawable/xiaohei"?/><TextViewandroid:id="@+id/id_address"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_toRightOf="@+id/id_img"android:padding="7dp"android:text="屈臣氏學生兼職"android:textColor="#000"?/><TextViewandroid:id="@+id/id_time"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentRight="true"android:padding="7dp"android:text="2015-01-29"android:textColor="#666"?/><TextViewandroid:id="@+id/id_message"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentBottom="true"android:layout_toRightOf="@+id/id_img"android:padding="7dp"android:text="三亞市區"android:textColor="#666"?/><TextViewandroid:id="@+id/id_price"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentBottom="true"android:layout_alignParentRight="true"android:padding="7dp"android:text="200元/天"android:textColor="#000"?/></RelativeLayout> </LinearLayout>

轉載于:https://blog.51cto.com/670176656/1610556

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