我有一个活动，我在其中创建了一个填充了已解析 XML 数据的表视图。表格视图看起来像我想要的那样，并且在功能上它也是正确的，但我想增强表格视图的垂直滚动功能。
Sr.No. column 可垂直滚动，但水平固定。这是根据我的要求，因此不需要更改！
截屏：
整个表格可以垂直滚动，包括序列号列。这也符合我的要求，因此无需更改！
截屏：
我的要求是，表格的标题在滚动时将保持垂直固定，这样用户即使向下滚动到表格底部也能看到列名。
所需输出的屏幕截图：
活动源代码：
public class ReportListActivity extends Activity {
TableLayout srno_table;
TableRow srno_report_tr_data;
TableLayout report_table;
TableRow report_tr_data;
//variables to send post request
String reportList_responseBody;
String reportList_responseCode;
//variables to parse xml
String report_list_xmlContent;
// XML node keys of Exam Details
static final String KEY_SET = "Set"; // parent node
static final String KEY_EXAMSETID = "ExamSetId";
static final String KEY_SETID = "SetId";
static final String KEY_SETNAME = "SetName";
static final String KEY_FULLMARKS = "FullMarks";
static final String KEY_RIGHTMARKS = "RightMarks";
static final String KEY_WRONGMARKS = "WrongMarks";
static final String KEY_LEFTMARKS = "LeftMarks";
static final String KEY_OBTAINMARKS = "ObtainMarks";
static final String KEY_STUDENTRANK = "StudentRank";
static final String KEY_EXAMDATE = "ExamDate";
//Progressbar object
ProgressDialog progress;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_LEFT_ICON);
setContentView(R.layout.activity_report_list);
//setting icon to title bar
getWindow().setFeatureDrawableResource(Window.FEATURE_LEFT_ICON,R.drawable.ic_launcher);
//starting the progress bar
progress = ProgressDialog.show(this, "Please Wait","Getting report list", true);
//===============For marquee===================================
TextView marqueeTextView = (TextView) findViewById(R.id.marquee_textView);
marqueeTextView.setText(Html.fromHtml(getFromPreference("marquee_Html_content")));
marqueeTextView.setSelected(true);
//===============For marquee===================================
//sending post request to download data
reportList_isOnline();
srno_table=(TableLayout) findViewById(R.id.srno_table);
//---------------Serial no Table Header-----------------------------------------------
TableRow srno_tr_head = new TableRow(this);
srno_tr_head.setId(10);
srno_tr_head.setBackgroundResource(R.drawable.list_header);
srno_tr_head.setLayoutParams(new LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
TextView label_sr_no = new TextView(this);
label_sr_no.setId(20);
label_sr_no.setText("S.No.");
label_sr_no.setTextColor(Color.WHITE);
label_sr_no.setPadding(5,5,5,5);
srno_tr_head.addView(label_sr_no);// add the column to the table row here
label_sr_no.setTextSize(15);
srno_table.addView(srno_tr_head, new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
//---------------Serial no Table Header-----------------------------------------------
report_table=(TableLayout) findViewById(R.id.report_table);
//---------------report Table Header-----------------------------------------------
TableRow report_tr_head = new TableRow(this);
report_tr_head.setId(10);
report_tr_head.setBackgroundResource(R.drawable.list_header);
report_tr_head.setLayoutParams(new LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
TextView label_test_name = new TextView(this);
label_test_name.setId(20);
label_test_name.setText("Test Name");
label_test_name.setTextColor(Color.WHITE);
label_test_name.setPadding(5,5,5,5);
report_tr_head.addView(label_test_name);// add the column to the table row here
label_test_name.setTextSize(15);
TextView label_test_date = new TextView(this);
label_test_date.setId(21);// define id that must be unique
label_test_date.setText("Date"); // set the text for the header
label_test_date.setTextColor(Color.WHITE); // set the color
label_test_date.setPadding(5,5,5,5); // set the padding (if required)
report_tr_head.addView(label_test_date); // add the column to the table row here
label_test_date.setTextSize(15);
TextView label_ro = new TextView(this);
label_ro.setId(21);// define id that must be unique
label_ro.setText("R.O."); // set the text for the header
label_ro.setTextColor(Color.WHITE); // set the color
label_ro.setPadding(5,5,5,5); // set the padding (if required)
report_tr_head.addView(label_ro); // add the column to the table row here
label_ro.setTextSize(15);
TextView label_wo = new TextView(this);
label_wo.setId(21);// define id that must be unique
label_wo.setText("W.O."); // set the text for the header
label_wo.setTextColor(Color.WHITE); // set the color
label_wo.setPadding(5,5,5,5); // set the padding (if required)
report_tr_head.addView(label_wo); // add the column to the table row here
label_wo.setTextSize(15);
TextView label_lo = new TextView(this);
label_lo.setId(21);// define id that must be unique
label_lo.setText("L.O."); // set the text for the header
label_lo.setTextColor(Color.WHITE); // set the color
label_lo.setPadding(5,5,5,5); // set the padding (if required)
report_tr_head.addView(label_lo); // add the column to the table row here
label_lo.setTextSize(15);
TextView label_max = new TextView(this);
label_max.setId(21);// define id that must be unique
label_max.setText("Max."); // set the text for the header
label_max.setTextColor(Color.WHITE); // set the color
label_max.setPadding(5,5,5,5); // set the padding (if required)
report_tr_head.addView(label_max); // add the column to the table row here
label_max.setTextSize(15);
TextView label_tm = new TextView(this);
label_tm.setId(21);// define id that must be unique
label_tm.setText("T.M."); // set the text for the header
label_tm.setTextColor(Color.WHITE); // set the color
label_tm.setPadding(5,5,5,5); // set the padding (if required)
report_tr_head.addView(label_tm); // add the column to the table row here
label_tm.setTextSize(15);
TextView label_rank = new TextView(this);
label_rank.setId(21);// define id that must be unique
label_rank.setText("Rank"); // set the text for the header
label_rank.setTextColor(Color.WHITE); // set the color
label_rank.setPadding(5,5,5,5); // set the padding (if required)
report_tr_head.addView(label_rank); // add the column to the table row here
label_rank.setTextSize(15);
report_table.addView(report_tr_head, new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
//---------------Serial no Table Header-----------------------------------------------
}
//onclick device back button
@Override
public void onBackPressed() {
// do something on back.
Intent intent = new Intent(ReportListActivity.this, TakeTestActivity.class);
finish();
ReportListActivity.this.startActivity(intent);
return;
}
//method to show toast message
public void makeAToast(String str) {
//yet to implement
Toast toast = Toast.makeText(this,str, Toast.LENGTH_SHORT);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();
}
//check connection
public boolean reportList_isOnline() {
ConnectivityManager cm =(ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
if (netInfo != null && netInfo.isConnectedOrConnecting()) {
//sending request for exam name list
new MyAsyncTask_download_report_list().execute(getFromPreference("student_code"),getFromPreference("reportExamType"));
return true;
}
//alert box to show internet connection error
AlertDialog.Builder Internet_Alert = new AlertDialog.Builder(ReportListActivity.this);
// set title
Internet_Alert.setCancelable(false);
Internet_Alert.setTitle("Attention!");
Internet_Alert.setMessage("This application requires internet connectivity, no internet connection detected");
Internet_Alert.setPositiveButton("Quit", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface arg0, int arg1)
{
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
onQuitPressed();
}
});
Internet_Alert.create().show();
return false;
}
//to remove application from task manager
public void onQuitPressed() {
int pid = android.os.Process.myPid();
android.os.Process.killProcess(pid);
}
//saving A VALUE in preference variable
public void saveInPreference(String name, String content)
{
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor editor = preferences.edit();
editor.putString(name,content);
editor.commit();
}
//getting content from preferences
public String getFromPreference(String variable_name)
{
String preference_return;
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
preference_return = preferences.getString(variable_name,"");
return preference_return;
}
//===================================================================================================================================
//sending student code and exam type to server to report list
//===================================================================================================================================
private class MyAsyncTask_download_report_list extends AsyncTask<String, Integer, Double>{
@Override
protected Double doInBackground(String... params) {
// TODO Auto-generated method stub
postData(params[0],params[1]);
return null;
}
@SuppressWarnings("deprecation")
protected void onPostExecute(Double result){
report_list_xmlContent=reportList_responseBody;
parse_ReportList();
}
protected void onProgressUpdate(Integer... progress){
}
@SuppressWarnings("deprecation")
public void postData(String student_code, String exam_type) {
//to handle connection timeout
HttpParams httpParams = new BasicHttpParams();
HttpConnectionParams.setConnectionTimeout(httpParams, 10000);
HttpConnectionParams.setSoTimeout(httpParams, 10000);
// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient(httpParams);
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(ReportListActivity.this);
final String url_first = preferences.getString("URLFirstPart","");
HttpPost httppost = new HttpPost(url_first+"StudentReport");
try {
// Data that I am sending
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("StudentCode", student_code));
nameValuePairs.add(new BasicNameValuePair("ExamType", exam_type));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
try
{
// Execute HTTP Post Request
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
//getting response body and code from the server
reportList_responseCode=""+ response.getStatusLine().getStatusCode();
reportList_responseBody = EntityUtils.toString(response.getEntity());
}
catch (SocketTimeoutException ex)
{
//showing alert in case of connection timeout
AlertDialog alertDialog = new AlertDialog.Builder(ReportListActivity.this).create();
// Setting Dialog Title
alertDialog.setTitle("Please Note");
// Setting Dialog Message
alertDialog.setMessage("Connection problem, please try later!");
// Setting OK Button
alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
// Write your code here to execute after dialog closed
dialog.cancel();
}
});
// Showing Alert Message
alertDialog.show();
}
Log.d("Report list response body: ", reportList_responseBody);
Log.d("Report list response code: ", reportList_responseCode);
}
catch (Throwable t ) {
//Toast.makeText( getApplicationContext(),""+t,Toast.LENGTH_LONG).show();
Log.d("Error Time of Login",t+"");
}
}
}
//===================================================================================================================================
//END sending student code and exam type to server to report list
//===================================================================================================================================
// function to populate report list from xml
void parse_ReportList()
{
ArrayList<HashMap<String, String>> menuItems = new ArrayList<HashMap<String, String>>();
XMLParser parser = new XMLParser();
Document doc = parser.getDomElement(report_list_xmlContent); // getting DOM element
//list object to populate spinner
//List<String> list = new ArrayList<String>();
NodeList nl = doc.getElementsByTagName(KEY_SET);
// looping through all item nodes <item>
for ( int i = 0; i < nl.getLength();i++) {
//----------------Serial no table body------------------------------------------
srno_report_tr_data = new TableRow(this);
srno_report_tr_data.setId(10);
srno_report_tr_data.setBackgroundResource(R.drawable.grey_list_bg);
srno_report_tr_data.setLayoutParams(new LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
final TextView sr_no = new TextView(this);
sr_no.setId(20);
sr_no.setText(""+(i+1));
sr_no.setTextColor(Color.BLACK);
sr_no.setPadding(5,5,5,5);
sr_no.setGravity(Gravity.CENTER);
sr_no.setTextSize(12);
srno_report_tr_data.addView(sr_no);// add the column to the table row here
srno_table.addView(srno_report_tr_data, new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
//----------------Serial no table body------------------------------------------
//----------------Report table body------------------------------------------
report_tr_data=new TableRow(this);
report_tr_data.setId(10);
report_tr_data.setBackgroundResource(R.drawable.grey_list_bg);
report_tr_data.setLayoutParams(new LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
// creating new HashMap
//HashMap<String, String> map = new HashMap<String, String>();
Element e = (Element) nl.item(i);
//Exam name
final TextView test_name = new TextView(this);
test_name.setId(20);
test_name.setText(parser.getValue(e, KEY_SETNAME));
test_name.setTextColor(Color.BLACK);
test_name.setPadding(5,5,5,5);
test_name.setGravity(Gravity.CENTER);
test_name.setTextSize(12);
report_tr_data.addView(test_name);// add the column to the table row here
//Exam date
final TextView test_date = new TextView(this);
test_date.setId(21);// define id that must be unique
test_date.setText(parser.getValue(e, KEY_EXAMDATE)); // set the text for the header
test_date.setTextColor(Color.BLACK); // set the color
test_date.setPadding(5,5,5,5); // set the padding (if required)
test_date.setGravity(Gravity.CENTER);
test_date.setTextSize(12);
report_tr_data.addView(test_date); // add the column to the table row here
//R.O.
final TextView test_ro = new TextView(this);
test_ro.setId(21);// define id that must be unique
test_ro.setText(parser.getValue(e, KEY_RIGHTMARKS)); // set the text for the header
test_ro.setTextColor(Color.BLACK); // set the color
test_ro.setPadding(5,5,5,5); // set the padding (if required)
test_ro.setGravity(Gravity.CENTER);
test_ro.setTextSize(12);
report_tr_data.addView(test_ro); // add the column to the table row here
//W.O.
final TextView test_wo = new TextView(this);
test_wo.setId(21);// define id that must be unique
test_wo.setText(parser.getValue(e, KEY_WRONGMARKS)); // set the text for the header
test_wo.setTextColor(Color.BLACK); // set the color
test_wo.setPadding(5,5,5,5); // set the padding (if required)
test_wo.setGravity(Gravity.CENTER);
test_wo.setTextSize(12);
report_tr_data.addView(test_wo); // add the column to the table row here
//L.O.
final TextView test_lo = new TextView(this);
test_lo.setId(21);// define id that must be unique
test_lo.setText(parser.getValue(e, KEY_LEFTMARKS)); // set the text for the header
test_lo.setTextColor(Color.BLACK); // set the color
test_lo.setPadding(5,5,5,5); // set the padding (if required)
test_lo.setGravity(Gravity.CENTER);
test_lo.setTextSize(12);
report_tr_data.addView(test_lo); // add the column to the table row here
//MAX
final TextView test_max = new TextView(this);
test_max.setId(21);// define id that must be unique
test_max.setText(parser.getValue(e, KEY_FULLMARKS)); // set the text for the header
test_max.setTextColor(Color.BLACK); // set the color
test_max.setPadding(5,5,5,5); // set the padding (if required)
test_max.setGravity(Gravity.CENTER);
test_max.setTextSize(12);
report_tr_data.addView(test_max); // add the column to the table row here
//TM
final TextView test_tm = new TextView(this);
test_tm.setId(21);// define id that must be unique
test_tm.setText(parser.getValue(e, KEY_OBTAINMARKS)); // set the text for the header
test_tm.setTextColor(Color.BLACK); // set the color
test_tm.setPadding(5,5,5,5); // set the padding (if required)
test_tm.setGravity(Gravity.CENTER);
test_tm.setTextSize(12);
report_tr_data.addView(test_tm); // add the column to the table row here
//RANK
final TextView test_rank = new TextView(this);
test_rank.setId(21);// define id that must be unique
test_rank.setText(parser.getValue(e, KEY_STUDENTRANK)); // set the text for the header
test_rank.setTextColor(Color.BLACK); // set the color
test_rank.setPadding(5,5,5,5); // set the padding (if required)
test_rank.setGravity(Gravity.CENTER);
test_rank.setTextSize(12);
report_tr_data.addView(test_rank); // add the column to the table row here
//EXAM SET ID
final TextView test_exam_set = new TextView(this);
test_exam_set.setId(21);// define id that must be unique
test_exam_set.setText(parser.getValue(e, KEY_EXAMSETID)); // set the text for the header
test_exam_set.setTextSize((float) 0.01);
test_exam_set.setTextColor(Color.TRANSPARENT); // set the color
test_exam_set.setPadding(5,5,5,5); // set the padding (if required)
report_tr_data.addView(test_exam_set); // add the column to the table row here
report_table.addView(report_tr_data, new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
//----------------------On click table row---------------------------------------
report_tr_data.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
//---------------------------------------------------------------------------------------------------
saveInPreference("showReportTab", "ScoreCard");
saveInPreference("reportExamName", test_name.getText().toString());
saveInPreference("reportExamSet", test_exam_set.getText().toString());
Intent intent = new Intent(ReportListActivity.this, ReportDetailsActivity.class);
finish();
ReportListActivity.this.startActivity(intent);
}
});
//----------------------On click table row---------------------------------------
//----------------Report table body------------------------------------------
//deactivating progress bar
progress.dismiss();
}
}
}
布局文件在这里
PS：除标题外，每一行都是可点击的