i want to add scrollview in my activity, i have tried to add scrollview dynamically but it throws me an exception. i am newbie in android, i dont know much about this,
please look at the code:
package com.example.ermanager;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ExecutionException;
import com.example.ermanager.R.drawable;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ScrollView;
import android.widget.Spinner;
import android.widget.SpinnerAdapter;
import android.widget.Toast;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.LinearLayout;
import android.widget.TextView;
public class order extends Activity {
String text;
private CheckBox chk;
List<String> orderList = new ArrayList<String>();
List<String> nameList = new ArrayList<String>();
List<String> priceList = new ArrayList<String>();
List<String> timeList = new ArrayList<String>();
String wname=null;
private AsyncTask<String, String, String> asyncTaskorder;
private AsyncTask<String, String, String> asyncTask;
private String response;
private static Context context;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_order);
wname =waiter.getWaiter();
Log.i("tag", "waiter name is "+wname);
stopService(new Intent(getBaseContext(), notifcationService.class));
GetDishesAsyncTask runner=new GetDishesAsyncTask();
//dummy username and password just to avoid errors, no need
String userName="a";
String password="b";
asyncTask=runner.execute(userName,password);
String asyncResultText;
try {
asyncResultText = asyncTask.get();
response = asyncResultText.trim();
Log.i("tag", "dishes from server is "+response);
//string prsing code started
String name_string="";
String price_string="";
String time_string="";
int name_counter=0;
int price_counter=0;
int time_counter=0;
char [] ch_resp = response.toCharArray();
//initial parsing for name sting...assining values to name_string
for(int i=0; i<response.length(); i++)
{
if(ch_resp[i]=='*' && name_counter==0)
{
name_counter=1;
continue;
}
if(ch_resp[i]=='*' && name_counter==1)
{
break;
}
if(name_counter==1)
{
name_string=name_string+ch_resp[i];
}
}
Log.i("tag", " first name array is "+name_string);
//for price string
response=response.replace("*"+name_string+"*", "");
ch_resp = response.toCharArray();
for(int i=0; i<response.length(); i++)
{
if(ch_resp[i]=='&' && price_counter==0)
{
price_counter=1;
continue;
}
if(ch_resp[i]=='&' && price_counter==1)
{
break;
}
if(price_counter==1)
{
price_string=price_string+ch_resp[i];
}
}
Log.i("tag", " first lat array is "+price_string);
response=response.replace("&"+price_string+"&", "");
//initial parsing for time sting...assining values to time_string
ch_resp = response.toCharArray();
for(int i=0; i<response.length(); i++)
{
if(ch_resp[i]=='^' && time_counter==0)
{
time_counter=1;
continue;
}
if(ch_resp[i]=='^' && time_counter==1)
{
break;
}
if(time_counter==1)
{
time_string=time_string+ch_resp[i];
}
}
Log.i("tag", " first longg array is "+time_string);
String temp="";
int count=0;
char [] name_string1 = name_string.toCharArray();
char [] price_string1 = price_string.toCharArray();
char [] time_string1 = time_string.toCharArray();
//***** parsing code for names
char msg;
// Log.i("tag", name_string);
for(int i=0; i<name_string1.length; i++)
{
if(name_string1[i]==':')
{
msg=name_string1[i];
Log.i("tag", "first time "+msg+" found");
// alert("first time "+name_string1[i]+" found");
for(int j=i+1; j<name_string1.length; j++)
{
// alert(" in j loop, j at "+name_string[j]);
if(name_string1[j]!=':')
{
// alert("in temp if");
temp=temp+name_string1[j];
Log.i("tag", "now temp is"+temp);
}
else if (name_string1[j]==':')
{
msg=name_string1[j];
Log.i("tag", "else satisfied "+msg+" found");
Log.i("tag", "final name is "+temp);
nameList.add(temp);
Log.i("tag", "name list at count is"+nameList.get(count));
Log.i("tag", "count value is "+count);
// alert("count at "+count+" and array is"+final_name_array[count]);
temp="";
count++;
i=j-1;
//alert(" name string of i is"+name_string[i]);
break;
}
}
}
}
//***** parsing code for price
count=0;
// Log.i("tag", name_string);
for(int i=0; i<price_string1.length; i++)
{
if(price_string1[i]==':')
{
msg=price_string1[i];
Log.i("tag", "first time "+msg+" found");
// alert("first time "+name_string1[i]+" found");
for(int j=i+1; j<price_string1.length; j++)
{
// alert(" in j loop, j at "+name_string[j]);
if(price_string1[j]!=':')
{
// alert("in temp if");
temp=temp+price_string1[j];
Log.i("tag", "now temp is"+temp);
}
else if (price_string1[j]==':')
{
msg=price_string1[j];
Log.i("tag", "else satisfied "+msg+" found");
Log.i("tag", "final name is "+temp);
priceList.add(temp);
Log.i("tag", "price list at count is "+priceList.get(count));
Log.i("tag", "count value is "+count);
// alert("count at "+count+" and array is"+final_name_array[count]);
temp="";
count++;
i=j-1;
//alert(" name string of i is"+name_string[i]);
break;
}
}
}
}
//******* parsing code for longg
count=0;
for(int i=0; i<time_string1.length; i++)
{
if(time_string1[i]==':')
{
msg=time_string1[i];
Log.i("tag", "first time "+msg+" found");
// alert("first time "+name_string1[i]+" found");
for(int j=i+1; j<time_string1.length; j++)
{
// alert(" in j loop, j at "+name_string[j]);
if(time_string1[j]!=':')
{
// alert("in temp if");
temp=temp+time_string1[j];
Log.i("tag", "now temp is"+temp);
}
else if (time_string1[j]==':')
{
msg=time_string1[j];
Log.i("tag", "else satisfied "+msg+" found");
Log.i("tag", "final name is "+temp);
timeList.add(temp);
Log.i("tag", "time list at count is "+timeList.get(count));
Log.i("tag", "count value is "+count);
// alert("count at "+count+" and array is"+final_name_array[count]);
temp="";
count++;
i=j-1;
//alert(" name string of i is"+name_string[i]);
break;
}
}
}
}
Log.i("tag", "******************************");
for(String loop:nameList)
{
Log.i("tag", loop);
}
for(String loop:priceList)
{
Log.i("tag", loop);
}
for(String loop:timeList)
{
Log.i("tag", loop);
}
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//ScrollView sv = new ScrollView(this);
final View linearLayout = findViewById(R.id.main_layout);
//LinearLayout layout = (LinearLayout) findViewById(R.id.info);
((LinearLayout) linearLayout).setBackgroundResource(R.drawable.bg);
//sv.addView(linearLayout); //this is what i have tried
for(int i=0; i<nameList.size(); i++)
{
TextView valueTV = new TextView(this);
valueTV.setText(":Dish Name: "+nameList.get(i)+" Dish price: "+priceList.get(i)+" Dish time: "+timeList.get(i)+":");
TextView valueTV1 = new TextView(this);
valueTV1.setText(":"+nameList.get(i)+":"+priceList.get(i)+":"+timeList.get(i)+":");
valueTV1.setVisibility(View.GONE);
// sv.addView(linearLayout);
chk=new CheckBox(this);
chk.setId(i);
chk.setText("Order");
chk.setTextColor(Color.BLACK);
Log.i("tag", " i is "+i+" id assigned to chk box is"+chk.getId());
EditText quantity = new EditText(this);
quantity.setHint("Quantity");
valueTV1.setLayoutParams(new LayoutParams(android.app.ActionBar.LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
((LinearLayout) linearLayout).addView(valueTV);
((LinearLayout) linearLayout).addView(valueTV1);
((LinearLayout) linearLayout).addView(chk);
((LinearLayout) linearLayout).addView(quantity);
}
final EditText specialInstruction = new EditText(this);
final EditText tableNo = new EditText(this);
Button myButton = new Button(this);
TextView tv1 = new TextView(this);
((LinearLayout) linearLayout).addView(tv1);
specialInstruction.setGravity(Gravity.CENTER);
specialInstruction.setHint("Special Instructions");
((LinearLayout) linearLayout).addView(specialInstruction);
tableNo.setGravity(Gravity.CENTER);
tableNo.setHint("Table No");
((LinearLayout) linearLayout).addView(tableNo);
myButton.setText("Send Order");
((LinearLayout) linearLayout).addView(myButton);
myButton.setOnClickListener(new OnClickListener() {
@SuppressLint("ShowToast") @Override
public void onClick(View v) {
// TODO Auto-generated method stub
boolean oneChecked = false;
v = null;
Intent intent = getIntent();
String quant = null;
//String username = intent.getExtras().getString("username");
//Log.i("tag", "username is"+username);
Log.i("tag", "in Listener");
for(int i=0; i<=(nameList.size()*4)-1; i++)
{
Log.i("tag", "in loop");
//Log.i("tag", "in loop i is, "+i+" nameList size is "+nameList.size());
v = ((LinearLayout) linearLayout).getChildAt(i);
if (v instanceof CheckBox) {
if (((CheckBox) v).isChecked()) {
oneChecked = true;
if (oneChecked) {
Log.i("tag", "in checkbox");
Log.i("tag", " check box at "+i+" is checked");
View v1;
v1 = ((LinearLayout) linearLayout).getChildAt(i-1);
View v2;
v2 = ((LinearLayout) linearLayout).getChildAt(i+1);
String quantity="";
if (v1 instanceof TextView)
{
int id=v1.getId();
Log.i("tag","ids are"+id);
text=((TextView) v1).getText().toString();
Log.i("tag", "in tv if"+text);
if(v2 instanceof EditText){
Log.i("tag", "in et if");
quant=((EditText) v2).getText().toString();
Log.i("tag", "quant is"+quant);
Log.i("tag", "text right now"+text);
quantity= quant+":";
}
text=text+quantity;
Log.i("tag", "values are "+text);
orderList.add(text);
}
}
oneChecked=false;
}
}
}
Log.i("tag", "final order List is ");
for(String loop:orderList)
{
Log.i("tag", loop);
}
String def=orderList.toString();
String sInst="";
Log.i("tag", "List is "+def);
SendOrderAsyncTask runner1 = new SendOrderAsyncTask();
String inst=specialInstruction.getText().toString();
Log.i("tag", "inst is "+inst);
String TableNo = tableNo.getText().toString();
if(inst.equals("")){
Log.i("tag", "inst is null ");
asyncTaskorder=runner1.execute(def,wname,sInst,TableNo);
}
else if(!(inst.equals("")))
{
Log.i("tag", "inst does not contain null");
sInst = specialInstruction.getText().toString();
Log.i("tag", "in else "+sInst);
asyncTaskorder=runner1.execute(def,wname,sInst,TableNo);
}
Log.i("tag", "spe inst is "+sInst);
// orderList = null;
Intent i = new Intent(order.this, order.class);
startActivity(i);
finish();
String asyncResultText = null;
try {
asyncResultText = asyncTaskorder.get();
Log.i("tag", "List in try is "+def);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
response = asyncResultText.trim();
Log.i("tag", "response is "+response);
if(response.equals("inservertrue"))
{
Log.i("tag", "order sent");
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.login, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
but the problem is whenever i launch my application it throws me an IllegatStateExceptionthat the child class has already parent. call removeChildfirst.
here is my activity.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:id="@+id/main_layout"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
ScrollViewerbeforeLinearLayoutin yourxmlfile and it will add a ScrollBar automatically when needed.javafile.