我很难让我的布局工作......
我想要做的是有两个微调器和一个按钮，单击按钮后，我会根据微调器中选择的值显示结果。
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| Spinner 1 |
-----------
-----------
| Spinner 2 |
-----------
-----------
| Button |
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Result 1
Result 2
Result 3
Result 4
Result 5
我试图将结果放在ListView中，但我遇到的问题是单击按钮后，我可以多次看到Spinner1，Spinner2和Button本身的重复。
布局的xml如下：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Spinner
android:id="@+id/spinner1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:entries="@array/country_arrays"
android:prompt="@string/country_prompt" />
<Spinner
android:id="@+id/spinner2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:entries="@array/country_arrays"
android:prompt="@string/country_prompt" />
<Button
android:id="@+id/button1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/done" />
<LinearLayout
android:id="@+id/moreContent"
android:layout_width="match_parent"
android:visibility="visible"
android:orientation="vertical"
android:layout_height="wrap_content"
>
<ListView
android:id="@android:id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world"
android:textColor="#ff0000"
android:textSize="12sp" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:contentDescription="@string/hello_world"
android:gravity="center_vertical"
android:text="@string/hello_world"
android:textColor="#0000ff"
android:textSize="12sp" />
</LinearLayout>
有人可以告诉我哪里出错了吗？
代码如下：
package ms.timetable;
import java.io.FileNotFoundException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Iterator;
import java.util.Map;
import java.util.TreeMap;
import java.util.Map.Entry;
import android.os.AsyncTask;
import android.os.Bundle;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.ListActivity;
import android.content.Context;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ListAdapter;
import android.widget.Spinner;
import android.widget.Toast;
public class MainActivity extends ListActivity {
final Context context = this;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
addListenerOnButton();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
public void addListenerOnButton() {
Button button = (Button) findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
RetreiveFeedTask rft = new RetreiveFeedTask();
rft.execute();
}
});
}
@SuppressLint("NewApi")
private class RetreiveFeedTask extends AsyncTask<Void, Void, String> {
TreeMap<String, String> _timetable = null;
@Override
protected String doInBackground(Void... arg0) {
// TODO Auto-generated method stub
_timetable = FetchTimetableInfo();
return null;
}
protected void onPostExecute(String str){
if (_timetable != null){
ArrayList<TimeTable> tarr = new ArrayList<TimeTable>();
Iterator<Entry<String, String>> it = _timetable.entrySet().iterator();
String toastText = "";
while (it.hasNext())
{
Map.Entry<String, String> pairs = (Map.Entry<String, String>)it.next();
String key = pairs.getKey();
String value = pairs.getValue();
toastText = toastText + key + " --- " + value + "\n";
//System.err.println(key + " --- " + value);
TimeTable tt = new TimeTable();
tt.set_line(value);
String [] tem = key.split("---");
tt.set_arrival(tem[1]);
tt.set_departure(tem[1]);
tarr.add(tt);
}
//Toast.makeText(context, toastText, Toast.LENGTH_LONG).show();
//tmap.add(_timetable);
setListAdapter((ListAdapter) new TimetableAdapter(getApplicationContext(), tarr));
}
}
private TreeMap<String, String> FetchTimetableInfo(){
Spinner spinner1 = (Spinner) findViewById(R.id.spinner1);
Spinner spinner2 = (Spinner) findViewById(R.id.spinner2);
String origin = (String) spinner1.getSelectedItem();
String destination = (String) spinner2.getSelectedItem();
//String val = String.valueOf(spinner1.getSelectedItem());
ArrayList<String> linesServOrigin = LineStation.GetServingLines(origin);
ArrayList<String> linesServDest = LineStation.GetServingLines(destination);
linesServOrigin.retainAll(linesServDest);
//ArrayList<String> preferredLines = linesServOrigin.re.retainAll(linesServDest);
Log.e(this.getClass().toString(), "Selected value is : " + linesServOrigin.get(0));
try
{
for (int k = 0; k < linesServOrigin.size(); k++)
{
String url = "http://tt.ptv.vic.gov.au/tt/XSLT_REQUEST?itdLPxx_lineMain=" + LineStation.GetLineMain(linesServOrigin.get(0)) + "&itdLPxx_lineID=" + LineStation.GetLineID(linesServOrigin.get(0)) + "&itdLPxx_output=html";
DataManager dm = new DataManager(url, getApplicationContext());
ArrayList<String> stationData = dm.GetStationsData();
ArrayList<ArrayList<String>> timetableData = dm.GetTimetableData();
ArrayList<String> originTimetable = null;
ArrayList<String> originTimetable1 = null;
ArrayList<String> destinationTimetable = null;
ArrayList<String> destinationTimetable1 = null;
int origPos = 0;
int destPos = 0;
int ctr = 0;
for (int i = 0; i < stationData.size(); i++)
{
if (stationData.get(i).equals(origin) || (origin + " - DEP").equals(stationData.get(i)))
{
//originTimetable = timetableData[i];
origPos = i;
}
else if (stationData.get(i).equals( destination) || (destination + " - ARR").equals(stationData.get(i)))
{
//destinationTimetable = timetableData[i];
destPos = i;
}
if (origPos != 0 && destPos != 0)
{
break;
}
}
if (origPos > destPos)
{
dm.SwitchDirection();
stationData = dm.GetStationsData();
timetableData = dm.GetTimetableData();
}
for (int i = stationData.size() - 1; i >= 0; i--)
{
if (stationData.get(i).equals(origin) || (origin + " - DEP").equals(stationData.get(i)))
{
if (originTimetable == null)
{
originTimetable = timetableData.get(i);
}
else if (originTimetable1 == null)
{
originTimetable1 = timetableData.get(i);
}
}
else if (stationData.get(i).equals(destination) || (destination + " - ARR").equals(stationData.get(i)))
{
if (destinationTimetable == null)
{
destinationTimetable = timetableData.get(i);
}
else if (destinationTimetable1 == null)
{
destinationTimetable1 = timetableData.get(i);
}
}
}
TreeMap<String, String> ttable = new TreeMap<String, String>();
if (originTimetable != null && destinationTimetable != null)
{
//int curtime = Integer.parseInt(DateTime.Now.ToString("HHmm", CultureInfo.CurrentCulture));
String temp = new SimpleDateFormat("HHmm").format(Calendar.getInstance().getTime());
int curtime =Integer.parseInt(temp);
System.err.println("Origin timetable size = " + originTimetable.size());
System.err.println("Destination timetable size = " + destinationTimetable.size());
for (int j = 0; j < originTimetable.size(); j++)
{
if (Integer.parseInt((originTimetable.get(j))) > curtime)
{
if (Integer.parseInt((destinationTimetable.get(j))) == -1)
{
if (destinationTimetable1 == null || (Integer.parseInt(destinationTimetable1.get(j)) == -1))
{
continue;
}
}
else if (destinationTimetable1 != null && Integer.parseInt(destinationTimetable1.get(j)) == -1)
{
if (destinationTimetable == null || (Integer.parseInt(destinationTimetable.get(j)) == -1))
{
continue;
}
}
ctr++;
if (destinationTimetable1 != null)
{
if (Integer.parseInt(originTimetable.get(j)) < Integer.parseInt(destinationTimetable1.get(j)))
{
ttable.put(originTimetable.get(j) + " --- " + destinationTimetable1.get(j), linesServOrigin.get(k));
}
}
else
{
if (Integer.parseInt(originTimetable.get(j)) < Integer.parseInt(destinationTimetable.get(j)))
{
ttable.put(originTimetable.get(j) + " --- " + destinationTimetable.get(j), linesServOrigin.get(k));
}
}
if (ctr == 5)
{
break;
}
}
}
ctr = 0;
if (originTimetable1 != null)
{
for (int j = 0; j < originTimetable1.size(); j++)
{
if (originTimetable1 != null && Integer.parseInt(originTimetable1.get(j)) > curtime)
{
if (Integer.parseInt(destinationTimetable.get(j)) == -1)
{
if (destinationTimetable1 == null || (Integer.parseInt(destinationTimetable1.get(j)) == -1))
{
continue;
}
}
else if (destinationTimetable1 != null && Integer.parseInt(destinationTimetable1.get(j)) == -1)
{
if (destinationTimetable == null || (Integer.parseInt(destinationTimetable.get(j))) == -1)
{
continue;
}
}
ctr++;
if (destinationTimetable1 != null)
{
if (Integer.parseInt(originTimetable1.get(j)) < Integer.parseInt(destinationTimetable1.get(j)))
{
ttable.put(originTimetable1.get(j) + " --- " + destinationTimetable1.get(j), linesServOrigin.get(k));
}
}
else
{
if (Integer.parseInt(originTimetable1.get(j)) < Integer.parseInt(destinationTimetable.get(j)))
{
ttable.put(originTimetable1.get(j) + " --- " + destinationTimetable.get(j), linesServOrigin.get(k));
}
}
if (ctr == 5)
{
break;
}
}
}
}
Iterator<Entry<String, String>> it = ttable.entrySet().iterator();
//foreach (KeyValuePair<String, List<String>> item in lineStations)
while (it.hasNext())
{
Map.Entry<String, String> pairs = (Map.Entry<String, String>)it.next();
String key = pairs.getKey();
String value = pairs.getValue();
System.err.println(key + " --- " + value);
}
return ttable;
}
}
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
}
class TimeTable{
private String _departure, _arrival, _line;
public TimeTable(){
}
public TimeTable(String departure, String arrival, String line){
_departure = departure;
_arrival = arrival;
_line = line;
}
public String get_departure() {
return _departure;
}
public void set_departure(String _departure) {
this._departure = _departure;
}
public String get_arrival() {
return _arrival;
}
public void set_arrival(String _arrival) {
this._arrival = _arrival;
}
public String get_line() {
return _line;
}
public void set_line(String _line) {
this._line = _line;
}
}
}
适配器如下：
package ms.timetable;
import java.util.ArrayList;
import ms.timetable.MainActivity.TimeTable;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;
public class TimetableAdapter extends ArrayAdapter<TimeTable>{
private final Context context;
private final ArrayList<TimeTable> values;
public TimetableAdapter(Context context, ArrayList<TimeTable> values){
super(context, R.layout.activity_main, values);
this.context = context;
this.values = values;
}
public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View rowView = inflater.inflate(R.layout.activity_main, parent, false);
TextView textView = (TextView) rowView.findViewById(R.id.textView1);
TextView textView2 = (TextView) rowView.findViewById(R.id.textView2);
//System.err.println("Position is : "+position);
TimeTable tt = values.get(position);
textView.setText(tt.get_departure());
textView2.setText(tt.get_arrival());
return rowView;
}
}
答案 0 :(得分：0)
问题是由于
View rowView = inflater.inflate(R.layout.activity_main, parent, false);
在getView()方法中。
您正在连续膨胀整个activity_main，然后将其添加到列表视图中。 将结果放在单独的xml而不是activity_main中。所以你将有一个新的xml文件，比如row.xml，它将包含：
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world"
android:textColor="#ff0000"
android:textSize="12sp" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:contentDescription="@string/hello_world"
android:gravity="center_vertical"
android:text="@string/hello_world"
android:textColor="#0000ff"
android:textSize="12sp" />
所以你必须充气
View rowView = inflater.inflate(R.layout.row, parent, false);
然后在listview中的activity_main.xml中添加生成的行。 所以你的问题将得到解决。希望它有所帮助。