问题描述
我有一个放在一起使用一个特殊的适配器,这样我可以显示不同的颜色每隔ListView的一个ListView。我怎样写我的code,这样我能看到一个清单,而无需扩展ListActivity(我的活动只延伸活动)这是我的code。
公共类TrackingMe延伸活动{
@覆盖
保护无效的onCreate(包savedInstanceState){
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
的setContentView(R.layout.trackingme_layout);
getWindow()。setFeatureInt(Window.FEATURE_CUSTOM_TITLE,
R.layout.custom_title_3);
共享preferences preFS = getShared preferences(设置,0);
最后字符串ID = prefs.getString(ID,);
最后的TextView myTitleText =(TextView中)findViewById(R.id.tvTitle3);
如果(myTitleText!= NULL)
myTitleText.setText(getResources()的getString(R.string.Trackingme));
的ImageButton addFriends =(的ImageButton)findViewById(R.id.btnAddFriends);
addFriends.setOnClickListener(新OnClickListener(){
@覆盖
公共无效的onClick(查看为arg0){
// TODO自动生成方法存根
意图addFriends =新的意向书(com.cellphone.INVITEFOLLOWER);
startActivity(addFriends);
}
});
最终的ListView LV2 =(ListView控件)findViewById(R.id.trackingmelistview);
lv2.setChoiceMode(2);
lv2.setTextFilterEnabled(真正的);
refreshList(ID,LV2);
的ImageButton刷新=(的ImageButton)findViewById(R.id.btnRefresh2);
refresh.setOnClickListener(新OnClickListener(){
@覆盖
公共无效的onClick(查看为arg0){
// TODO自动生成方法存根
refreshList(ID,LV2);
}
});
}
静态最后的ArrayList< HashMap的<字符串,字符串>> list2中=新的ArrayList< HashMap的<字符串,字符串>>();
私人无效refreshList(字符型,ListView控件LV){
//删除列表并重建它会选择不同的反应
//字符串来获得更新的时间。
DefaultHttpClient的HttpClient =新DefaultHttpClient();
HttpPost httpost =新HttpPost(
http://iphone-radar.com/people_i_follow);
JSONObject的持有人=新的JSONObject();
尝试 {
holder.put(用户id,身份证);
现在//太平洋时区
StringEntity本身=新StringEntity(holder.toString());
httpost.setEntity(SE);
httpost.setHeader(接受,应用/ JSON);
httpost.setHeader(内容型,应用/ JSON);
ResponseHandler的ResponseHandler的=新BasicResponseHandler();
最后弦乐响应=的HttpClient
.execute(httpost,ResponseHandler所);
list2.removeAll(list2中);
SpecialAdapter适配器=新SpecialAdapter(这一点,list2中,
R.layout.trackingme_row_layout,新的String [] {姓名},新的INT [] {R.id.tvTrackingMeNames});
org.json.JSONObject OBJ =新org.json.JSONObject(响应);
JSONArray tracking_users = obj.getJSONArray(D);
的for(int i = 0; I< tracking_users.length();我++){
// for循环获取所有数据
HashMap的<字符串,字符串>临时=新的HashMap<字符串,字符串>();
的JSONObject用户= tracking_users.getJSONObject(ⅰ);
temp.put(姓名,user.getString(FULL_NAME));
list2.add(临时);
//上传位置时
}
lv.setAdapter(适配器);
}赶上(JSONException E1){
// TODO自动生成的catch块
e1.printStackTrace();
}赶上(UnsupportedEncodingException E){
// TODO自动生成的catch块
e.printStackTrace();
}赶上(ClientProtocolException E){
// TODO自动生成的catch块
e.printStackTrace();
}赶上(IOException异常E){
// TODO自动生成的catch块
e.printStackTrace();
}
}
}
//这里是特殊的适配器,以便everyother线是不同的颜色
公共类SpecialAdapter扩展SimpleAdapter {
私人INT []颜色=新INT [] {Color.GRAY,Color.WHITE};
公共SpecialAdapter(上下文的背景下,
ArrayList的< HashMap的<字符串,字符串>>列表,INT资源,
的String []从,INT []键){
超(背景下,列表,资源,从,到);
}
@覆盖
公共查看getView(INT位置,查看convertView,ViewGroup中父){
查看查看= super.getView(位置,convertView,父母);
INT colorPos =位置%colors.length;
view.setBackgroundColor(颜色[colorPos]);
返回查看;
}
}
到目前为止,它显示为文本的依据是什么,我从我的源得到的线。然而,当我点击单个行,他们不突出,即使我写lv.setChoiceMode(2),有旁边的列表视图没有复选框。谢谢
编辑这里是我的trackingme_row_layout.xml
< XML版本=1.0编码=UTF-8&GT?;
< RelativeLayout的的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:方向=垂直
机器人:layout_width =FILL_PARENT
机器人:layout_height =FILL_PARENT>
<的TextView
机器人:ID =@ + ID / tvTrackingMeNames
机器人:layout_height =WRAP_CONTENT
机器人:layout_width =WRAP_CONTENT
机器人:layout_alignParentTop =真
机器人:layout_alignParentLeft =真
机器人:layout_marginLeft =31dp
机器人:文本=TextView的
机器人:textAppearance =机器人:ATTR / textAppearanceMedium
机器人:文字颜色=#000000/>
< / RelativeLayout的>
和trackingme_layout.xml
< XML版本=1.0编码=UTF-8&GT?;
< RelativeLayout的的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:方向=垂直
机器人:layout_width =FILL_PARENT
机器人:layout_height =FILL_PARENT>
<的ListView
机器人:ID =@ + ID / trackingmelistview
机器人:layout_width =FILL_PARENT
机器人:layout_height =FILL_PARENT
机器人:paddingTop =10dp/>
<的ImageButton
机器人:ID =@ + ID / btnRefresh2
机器人:文本=刷新
机器人:SRC =@机器人:可绘制/ stat_notify_sync
机器人:layout_width =WRAP_CONTENT
机器人:layout_height =WRAP_CONTENT
机器人:layout_alignParentBottom =真
机器人:layout_alignParentLeft =真/>
< / RelativeLayout的>
调用 setChoiceMode
是不够的,以显示你的列表行旁边的复选框。如果您使用的是基本布局行,试试 android.R.layout.simple_list_item_multiple_choice
。否则,你将有一个复选框添加到您的排布置和放大器;管理其ON / OFF状态在自己的适配器 getView
方法。
心连心,
阿克沙伊
PS:拨打 setChoiceMode(ListView.CHOICE_MODE_MULTIPLE)
而不是 setChoiceMode(2)
I have a ListView that is put together using a special adapter so that I can show every other listview in a different color. How do I write my code so that I am able to see a checklist without having to extend ListActivity (my activity only extends Activity) Here is my code.
public class TrackingMe extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.trackingme_layout);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE,
R.layout.custom_title_3);
SharedPreferences prefs = getSharedPreferences("Settings", 0);
final String id = prefs.getString("ID", "");
final TextView myTitleText = (TextView) findViewById(R.id.tvTitle3);
if (myTitleText != null)
myTitleText.setText(getResources().getString(R.string.Trackingme));
ImageButton addFriends = (ImageButton) findViewById(R.id.btnAddFriends);
addFriends.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent addFriends = new Intent("com.cellphone.INVITEFOLLOWER");
startActivity(addFriends);
}
});
final ListView lv2 = (ListView) findViewById(R.id.trackingmelistview);
lv2.setChoiceMode(2);
lv2.setTextFilterEnabled(true);
refreshList(id,lv2);
ImageButton refresh = (ImageButton) findViewById(R.id.btnRefresh2);
refresh.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
refreshList(id, lv2);
}
});
}
static final ArrayList<HashMap<String, String>> list2 = new ArrayList<HashMap<String, String>>();
private void refreshList(String id, ListView lv) {
// removes the list and rebuilds it will choose different response
// string to get the refreshed times.
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpPost httpost = new HttpPost(
"http://iphone-radar.com/people_i_follow");
JSONObject holder = new JSONObject();
try {
holder.put("userid", id);
// pacific time zone for now
StringEntity se = new StringEntity(holder.toString());
httpost.setEntity(se);
httpost.setHeader("Accept", "application/json");
httpost.setHeader("Content-type", "application/json");
ResponseHandler responseHandler = new BasicResponseHandler();
final String response = httpclient
.execute(httpost, responseHandler);
list2.removeAll(list2);
SpecialAdapter adapter = new SpecialAdapter(this, list2,
R.layout.trackingme_row_layout, new String[] { "name" }, new int[] { R.id.tvTrackingMeNames});
org.json.JSONObject obj = new org.json.JSONObject(response);
JSONArray tracking_users = obj.getJSONArray("d");
for (int i = 0; i < tracking_users.length(); i++) {
// for loop to get all data
HashMap<String, String> temp = new HashMap<String, String>();
JSONObject user = tracking_users.getJSONObject(i);
temp.put("name", user.getString("full_name"));
list2.add(temp);
// upload location time
}
lv.setAdapter(adapter);
} catch (JSONException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
//here is the special adapter so that everyother line is a different color
public class SpecialAdapter extends SimpleAdapter {
private int[] colors = new int[] { Color.GRAY, Color.WHITE };
public SpecialAdapter(Context context,
ArrayList<HashMap<String, String>> list, int resource,
String[] from, int[] to) {
super(context, list, resource, from, to);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = super.getView(position, convertView, parent);
int colorPos = position % colors.length;
view.setBackgroundColor(colors[colorPos]);
return view;
}
}
So far it shows up as a line of text based on what I get from my source. However, when I click on individual lines, they don't highlight and even though I wrote lv.setChoiceMode(2), there was no checkbox next to the listview. Thanks
EDIT here is my trackingme_row_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:id="@+id/tvTrackingMeNames"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_marginLeft="31dp"
android:text="TextView"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#000000"/>
</RelativeLayout>
and trackingme_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<ListView
android:id="@+id/trackingmelistview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingTop="10dp"/>
<ImageButton
android:id="@+id/btnRefresh2"
android:text="Refresh"
android:src="@android:drawable/stat_notify_sync"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"/>
</RelativeLayout>
Calling setChoiceMode
is not enough to display checkboxes beside your list rows. If you are using a basic layout for the rows, try android.R.layout.simple_list_item_multiple_choice
. Else, you will have to add a checkbox to your row layout & manage its on/off state yourself in the adapter's getView
method.
HTH,
Akshay
P.S: call setChoiceMode(ListView.CHOICE_MODE_MULTIPLE)
instead of setChoiceMode(2)
.
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