做一个词典，要将测试的结果在最后显示出来。
举例：
单词：anderstand
选项：A：知道
? ? ? ? ?B：牛
? ? ? ? ?C：大便
? ? ? ? ?D：热火队
?
显然答案是 A。
做测测试的时候，类似这样的单词测试有50个，每次都会让你选择一个的。比如我选择了
B：牛，那么这是错的。
?
我要在最后的单词测试中将显示：
?
单词：anderstand
选项：A：知道
? ? ? ? ?B：牛
? ? ? ? ?C：大便
? ? ? ? ?D：热火队
?
将正确的答案的颜色设置成为蓝色，选错的答案设置成为红色，类似于
-----------------------------------------------------------》》》
也就是动态的显示我们a b ?c ?d四个选项的颜色喽。
listview用的是适配器是继承了baseadapter，所以我们从网上找答案，
（其实，我相信，好多同学朋友，起初使用listview都是通过百度，或者是谷歌来找代码做demo的）
于是百度，谷歌下，
?
http://www.cnblogs.com/allin/archive/2010/05/11/1732200.html
代码：
public class MyAdapter extends BaseAdapter{ private LayoutInflater mInflater; public MyAdapter(Context context){ this.mInflater = LayoutInflater.from(context); } @Override public int getCount() { // TODO Auto-generated method stub return mData.size(); } @Override public Object getItem(int arg0) { // TODO Auto-generated method stub return null; } @Override public long getItemId(int arg0) { // TODO Auto-generated method stub return 0; } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder = null; if (convertView == null) { holder=new ViewHolder(); convertView = mInflater.inflate(R.layout.vlist2, null); holder.img = (ImageView)convertView.findViewById(R.id.img); holder.title = (TextView)convertView.findViewById(R.id.title); holder.info = (TextView)convertView.findViewById(R.id.info); holder.viewBtn = (Button)convertView.findViewById(R.id.view_btn); convertView.setTag(holder); }else { holder = (ViewHolder)convertView.getTag(); } holder.img.setBackgroundResource((Integer)mData.get(position).get("img")); holder.title.setText((String)mData.get(position).get("title")); holder.info.setText((String)mData.get(position).get("info")); holder.viewBtn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { showInfo(); } }); return convertView; } }?还有：http://xqjay19910131-yahoo-cn.iteye.com/blog/1167956
代码：
?
public class MyAdapter extends BaseAdapter{ private LayoutInflater flater; public MyAdapter(Context context) { super(); this.flater = LayoutInflater.from(context); } public int getCount() { // TODO Auto-generated method stub return list.size(); } public Object getItem(int arg0) { // TODO Auto-generated method stub return null; } public long getItemId(int arg0) { // TODO Auto-generated method stub return 0; } public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub ViewHolder holder = null; if(convertView == null){ holder = new ViewHolder(); convertView = flater.inflate(R.layout.user2, null); holder.headimg = (ImageView) convertView.findViewById(R.id.headimg); holder.nickname = (TextView) convertView.findViewById(R.id.nickname); holder.textsign = (TextView) convertView.findViewById(R.id.textsign); holder.listbtn = (Button) convertView.findViewById(R.id.listbtn); convertView.setTag(holder); } else{ holder = (ViewHolder) convertView.getTag(); } holder.headimg.setBackgroundResource((Integer)list.get(position).get("headimg")); holder.nickname.setText((String)list.get(position).get("nickname")); holder.textsign.setText((String)list.get(position).get("textsign")); holder.listbtn.setOnClickListener(new View.OnClickListener() { public void onClick(View arg0) { } }); return convertView; } } } ?又或者两者的代码是一样的。
于是，我弄他们的代码下来到我的代码中就成了这样的：
// 查询历史上搜索过的单词 ，查询的表是history_word private class TestWordResutListAdapter extends BaseAdapter { // List<Map<String , String>> lst ; private LayoutInflater mInflater; public TestWordResutListAdapter(Context context, List<Map<String, String>> lst) { // this.lst = lst ; this.mInflater = LayoutInflater.from(context); } @Override public int getCount() { // TODO Auto-generated method stub return lst.size(); } @Override public Object getItem(int position) { // TODO Auto-generated method stub return position; } @Override public long getItemId(int position) { // TODO Auto-generated method stub return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { // 获取ListView 每个布局文件 if (convertView == null) { convertView = getLayoutInflater().inflate(R.layout.wordtestresult_list_item, null); // 获取每个ListView行的布局 } //获得item word单词的id的值的 TextView tv_wordtestresult_item_id = (TextView) convertView .findViewById(R.id.tv_wordtestresult_item_id); // 显示的单词在屏幕上的顺序 //显示序号的 TextView tv_wordtestresult_item_index = (TextView) convertView .findViewById(R.id.tv_wordtestresult_item_index); // 显示的单词在屏幕上的顺序 //显示单词的 TextView tv_wordtestresult_item_word = (TextView) convertView .findViewById(R.id.tv_wordtestresult_item_word); // 显示的单词在屏幕上的顺序 //显示答案1 TextView tv_wordtestresult_item_meana = (TextView) convertView .findViewById(R.id.tv_wordtestresult_item_meana); // 显示的单词在屏幕上的顺序 //显示答案2 TextView tv_wordtestresult_item_meanb = (TextView) convertView .findViewById(R.id.tv_wordtestresult_item_meanb); // 显示的单词在屏幕上的顺序 //显示答案3 TextView tv_wordtestresult_item_meanc = (TextView) convertView .findViewById(R.id.tv_wordtestresult_item_meanc); // 显示的单词在屏幕上的顺序 //显示答案4 TextView tv_wordtestresult_item_meand = (TextView) convertView .findViewById(R.id.tv_wordtestresult_item_meand); // 显示的单词在屏幕上的顺序 // 根据List lists的值进行设置 Map<String, String> wordListMap = (Map<String, String>) lst .get(position); String id = wordListMap.get("id") ; String keyid = "[" + wordListMap.get("keyid") + "]"; String name = wordListMap.get("name"); String ans_A = wordListMap.get("ans_A"); String ans_B = wordListMap.get("ans_B"); String ans_C = wordListMap.get("ans_C"); String ans_D = wordListMap.get("ans_D"); String ans_index = wordListMap.get("ans_index").trim(); String ans_press = wordListMap.get("ans_press").trim(); System.out.println("------->>ans_index" + ans_index + "------>>id=" + id); System.out.println("------->>ans_press" + ans_press ); tv_wordtestresult_item_meanb.setTag(id) ; if (ans_index.equals("1")) { //为正确答案标记绿色的颜色 tv_wordtestresult_item_meana.setTextColor(Color.GREEN) ; System.out.println("-------1>>id =" + id); } else if (ans_index.equals("2")) { tv_wordtestresult_item_meanb.setTextColor(Color.GREEN) ; System.out.println("ans_index-------2>>id =" + id); } else if (ans_index.equals("3")) { tv_wordtestresult_item_meanc.setTextColor(Color.GREEN) ; System.out.println("ans_index-------3>>id =" + id); } else if (ans_index.equals("4")) { tv_wordtestresult_item_meand.setTextColor(Color.GREEN) ; System.out.println("ans_index-------4>>id =" + id); } if (!ans_index.equals(ans_press)) { //为选择错误的标记颜色为红色 System.out.println("ans_press------->>id =" + id); if (ans_press.equals("1")) { System.out.println("ans_press-------1>>id =" + id); tv_wordtestresult_item_meana.setTextColor(Color.RED) ; } else if (ans_press.equals("2")) { System.out.println("ans_press-------2>>id =" + id); tv_wordtestresult_item_meanb.setTextColor(Color.RED) ; } else if (ans_press.equals("3")) { System.out.println("ans_press-------3>>id =" + id); tv_wordtestresult_item_meanc.setTextColor(Color.RED) ; } else if (ans_press.equals("4")) { System.out.println("ans_press-------4>>id =" + id); tv_wordtestresult_item_meand.setTextColor(Color.RED) ; } } tv_wordtestresult_item_id.setText(id) ; tv_wordtestresult_item_index.setText(keyid) ; tv_wordtestresult_item_word.setText(name) ; tv_wordtestresult_item_meana.setText("A) " +ans_A) ; tv_wordtestresult_item_meanb.setText("B) " +ans_B) ; tv_wordtestresult_item_meanc.setText("C) " +ans_C) ; tv_wordtestresult_item_meand.setText("D) " +ans_D) ; tv_wordtestresult_item_id = null ; tv_wordtestresult_item_index = null ; tv_wordtestresult_item_word = null ; tv_wordtestresult_item_meana = null ; tv_wordtestresult_item_meanb = null ; tv_wordtestresult_item_meanc = null ; tv_wordtestresult_item_meand = null ; ans_index = null ; ans_press = null ; return convertView; } } // end class?? 这里的
tv_wordtestresult_item_meana tv_wordtestresult_item_meanb tv_wordtestresult_item_meanc tv_wordtestresult_item_meand
item的四个控件是的眼神是根据item中，从数据库来的值进行设置的
String ans_index = wordListMap.get("ans_index").trim(); String ans_press = wordListMap.get("ans_press").trim(); System.out.println("------->>ans_index" + ans_index + "------>>id=" + id); System.out.println("------->>ans_press" + ans_press ); tv_wordtestresult_item_meanb.setTag(id) ; if (ans_index.equals("1")) { //为正确答案标记绿色的颜色 tv_wordtestresult_item_meana.setTextColor(Color.GREEN) ; System.out.println("-------1>>id =" + id); } else if (ans_index.equals("2")) { tv_wordtestresult_item_meanb.setTextColor(Color.GREEN) ; System.out.println("ans_index-------2>>id =" + id); } else if (ans_index.equals("3")) { tv_wordtestresult_item_meanc.setTextColor(Color.GREEN) ; System.out.println("ans_index-------3>>id =" + id); } else if (ans_index.equals("4")) { tv_wordtestresult_item_meand.setTextColor(Color.GREEN) ; System.out.println("ans_index-------4>>id =" + id); } if (!ans_index.equals(ans_press)) { //为选择错误的标记颜色为红色 System.out.println("ans_press------->>id =" + id); if (ans_press.equals("1")) { System.out.println("ans_press-------1>>id =" + id); tv_wordtestresult_item_meana.setTextColor(Color.RED) ; } else if (ans_press.equals("2")) { System.out.println("ans_press-------2>>id =" + id); tv_wordtestresult_item_meanb.setTextColor(Color.RED) ; } else if (ans_press.equals("3")) { System.out.println("ans_press-------3>>id =" + id); tv_wordtestresult_item_meanc.setTextColor(Color.RED) ; } else if (ans_press.equals("4")) { System.out.println("ans_press-------4>>id =" + id); tv_wordtestresult_item_meand.setTextColor(Color.RED) ; } }?于是，做好以后，运行程序，当下拉上拉listview的时候，item的颜色是不对的，就是说，不该有颜色的控件，也添加了颜色。
可能是listview这样的情况大家遇到的比较少，我网上查了下，没有这样的例子。苦逼了，最后的居然是这样的：
?
?
@Override public View getView(int position, View convertView, ViewGroup parent) { // 获取ListView 每个布局文件 convertView = null ; if (convertView == null) { convertView = getLayoutInflater().inflate(R.layout.wordtestresult_list_item, null); // 获取每个ListView行的布局 } //获得item word单词的id的值的 TextView tv_wordtestresult_item_id = (TextView) convertView .findViewById(R.id.tv_wordtestresult_item_id); // 显示的单词在屏幕上的顺序 //显示序号的 TextView tv_wordtestresult_item_index = (TextView) convertView .findViewById(R.id.tv_wordtestresult_item_index); // 显示的单词在屏幕上的顺序 //显示单词的 TextView tv_wordtestresult_item_word = (TextView) convertView .findViewById(R.id.tv_wordtestresult_item_word); // 显示的单词在屏幕上的顺序 //显示答案1 TextView tv_wordtestresult_item_meana = (TextView) convertView .findViewById(R.id.tv_wordtestresult_item_meana); // 显示的单词在屏幕上的顺序 //显示答案2 TextView tv_wordtestresult_item_meanb = (TextView) convertView .findViewById(R.id.tv_wordtestresult_item_meanb); // 显示的单词在屏幕上的顺序 //显示答案3 TextView tv_wordtestresult_item_meanc = (TextView) convertView .findViewById(R.id.tv_wordtestresult_item_meanc); // 显示的单词在屏幕上的顺序 //显示答案4 TextView tv_wordtestresult_item_meand = (TextView) convertView .findViewById(R.id.tv_wordtestresult_item_meand); // 显示的单词在屏幕上的顺序 // 根据List lists的值进行设置 Map<String, String> wordListMap = (Map<String, String>) lst .get(position); String id = wordListMap.get("id") ; String keyid = "[" + wordListMap.get("keyid") + "]"; String name = wordListMap.get("name"); String ans_A = wordListMap.get("ans_A"); String ans_B = wordListMap.get("ans_B"); String ans_C = wordListMap.get("ans_C"); String ans_D = wordListMap.get("ans_D"); String ans_index = wordListMap.get("ans_index").trim(); String ans_press = wordListMap.get("ans_press").trim(); System.out.println("------->>ans_index" + ans_index + "------>>id=" + id); System.out.println("------->>ans_press" + ans_press ); tv_wordtestresult_item_meanb.setTag(id) ; if (ans_index.equals("1")) { //为正确答案标记绿色的颜色 tv_wordtestresult_item_meana.setTextColor(Color.GREEN) ; System.out.println("-------1>>id =" + id); } else if (ans_index.equals("2")) { tv_wordtestresult_item_meanb.setTextColor(Color.GREEN) ; System.out.println("ans_index-------2>>id =" + id); } else if (ans_index.equals("3")) { tv_wordtestresult_item_meanc.setTextColor(Color.GREEN) ; System.out.println("ans_index-------3>>id =" + id); } else if (ans_index.equals("4")) { tv_wordtestresult_item_meand.setTextColor(Color.GREEN) ; System.out.println("ans_index-------4>>id =" + id); } if (!ans_index.equals(ans_press)) { //为选择错误的标记颜色为红色 System.out.println("ans_press------->>id =" + id); if (ans_press.equals("1")) { System.out.println("ans_press-------1>>id =" + id); tv_wordtestresult_item_meana.setTextColor(Color.RED) ; } else if (ans_press.equals("2")) { System.out.println("ans_press-------2>>id =" + id); tv_wordtestresult_item_meanb.setTextColor(Color.RED) ; } else if (ans_press.equals("3")) { System.out.println("ans_press-------3>>id =" + id); tv_wordtestresult_item_meanc.setTextColor(Color.RED) ; } else if (ans_press.equals("4")) { System.out.println("ans_press-------4>>id =" + id); tv_wordtestresult_item_meand.setTextColor(Color.RED) ; } } tv_wordtestresult_item_id.setText(id) ; tv_wordtestresult_item_index.setText(keyid) ; tv_wordtestresult_item_word.setText(name) ; tv_wordtestresult_item_meana.setText("A) " +ans_A) ; tv_wordtestresult_item_meanb.setText("B) " +ans_B) ; tv_wordtestresult_item_meanc.setText("C) " +ans_C) ; tv_wordtestresult_item_meand.setText("D) " +ans_D) ; tv_wordtestresult_item_id = null ; tv_wordtestresult_item_index = null ; tv_wordtestresult_item_word = null ; tv_wordtestresult_item_meana = null ; tv_wordtestresult_item_meanb = null ; tv_wordtestresult_item_meanc = null ; tv_wordtestresult_item_meand = null ; ans_index = null ; ans_press = null ; return convertView; } } // end class??
如上上面的一行代码就解决了问题了。
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