Develop Reference

How to compare a textview outside of the table to a textview in a table row?

public void filter(TableLayout tl, String regex) {
TableRow tr;
TextView tv;
Pattern p;
Matcher m;
p = Pattern.compile(regex);
int n = tl.getChildCount();
for (int i = 0; i < n; i++) {
tr = (TableRow) tl.getChildAt(i);
tv = (TextView) tr.getChildAt(0);
m = p.matcher(tv.getText());
if (m.find()) {
tr.setVisibility(View.VISIBLE);
} else {
tr.setVisibility(View.GONE);
}
I have tried to do filter for a tablelayout on aftertextchanged . The value of the text is passed into filter method perfectly but tv = (TextView) tr.getChildAt(0); gives me android.widget.LinearLayout cannot be cast to android.widget.TextView. As most other forums show that there is an id for the textview as it is hardcoded , I did not manage to find one that solves the error of textview that is put in dynamically. Below is an example of what I add to the table layout which works peerfectly fine.
public void addData(ArrayList<Transactions> Transactions) {
tl.removeAllViewsInLayout();
addHeader();
int j = 1;
for (Iterator i = Transactions.iterator(); i.hasNext(); j++) {
Transactions p = (Transactions) i.next();
if (p.getAdminNo().equals(adminNo)) {
/** Create a TableRow dynamically **/
tr = new TableRow(this);
/** Creating a TextView to add to the row **/
label = new TextView(this);
label.setText(String.valueOf(j));
label.setId(p.getId());
acd = String.valueOf(p.getId());
label.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
TableRow.LayoutParams.WRAP_CONTENT));
label.setPadding(5, 5, 5, 5);
label.setBackgroundColor(Color.GRAY);
LinearLayout Ll = new LinearLayout(this);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT);
params.setMargins(5, 2, 2, 2);
//Ll.setPadding(10, 5, 5, 5);
Ll.addView(label, params);
tr.addView((View) Ll); // Adding textView to tablerow.
This is my xml file. When i put a value into my edittext, it will trigger filter method.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<EditText
android:layout_width="134dp"
android:layout_height="wrap_content"
android:id="#+id/search"
/>
<Spinner
android:id="#+id/spinner"
android:layout_width="244dp"
android:layout_height="44dp"
android:textColor="#00f0ff"
/>
<ScrollView
android:id="#+id/layout"
android:layout_height="match_parent"
android:scrollbars="horizontal|vertical"
android:layout_width="match_parent"
android:layout_marginTop="5dip"
android:scrollbarStyle="outsideInset"
android:fillViewport="true">
<HorizontalScrollView
android:id="#+id/horizontalView"
android:layout_height="wrap_content"
android:scrollbars="horizontal|vertical"
android:layout_width="wrap_content"
android:layout_marginTop="5dip">
<TableLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/maintable" >
</TableLayout>
</HorizontalScrollView>
</ScrollView>
</LinearLayout>

The reason its throwing a cast exception is because the first item you are adding to the table view is the linearlayout
Ll.addView(label, params); //adding textview to linearlayout
tr.addView((View) Ll); // Adding linearlayout to tablerow.
Since its just an item you want to add to the tablerow, I dont think you need the linearlayout. What you can do is this:
public void addData(ArrayList<Transactions> Transactions) {
tl.removeAllViewsInLayout();
addHeader();
int j = 1;
for (Iterator i = Transactions.iterator(); i.hasNext(); j++) {
Transactions p = (Transactions) i.next();
if (p.getAdminNo().equals(adminNo)) {
/** Create a TableRow dynamically **/
tr = new TableRow(this);
/** Creating a TextView to add to the row **/
label = new TextView(this);
label.setText(String.valueOf(j));
label.setId(p.getId());
acd = String.valueOf(p.getId());
label.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT,
TableRow.LayoutParams.WRAP_CONTENT));
label.setPadding(5, 5, 5, 5);
label.setBackgroundColor(Color.GRAY);
tr.addView((label); // Adding textView to tablerow.
}
}
But if you must add the linearlayout, you should get back the textview by doing this
public void filter(TableLayout tl, String regex) {
TableRow tr;
TextView tv;
Pattern p;
Matcher m;
p = Pattern.compile(regex);
int n = tl.getChildCount();
for (int i = 0; i < n; i++) {
tr = (TableRow) tl.getChildAt(i);
LinearLayout ll = (LinearLayout) tr.getChildAt(0);
tv = (TextView) ll.getChildAt(0);
m = p.matcher(tv.getText());
if (m.find()) {
tr.setVisibility(View.VISIBLE);
} else {
tr.setVisibility(View.GONE);
}
This should work. Hopefully it helps, goodluck

how can i get Values from dynamically created andorid TableRow?

How can i get the data from the Table Row on the button Click Event from the selected Radio Button.
How i can set the Radio Group in a Radio button also when i write
rg.addView(rb); My Android Application is Closed Unfortunately.
My XML File code
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.example.dynamictablelayout.Round_Trip_Search_Result" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/hello_world" />
<TableLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/textView1"
android:id="#+id/tl"
android:stretchColumns="*" >
</TableLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/tl"
android:id="#+id/ll"
android:orientation="vertical" >
</LinearLayout>
<TableLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/ll"
android:id="#+id/tl1"
android:stretchColumns="*" >
</TableLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:id="#+id/ll1"
android:orientation="vertical" >
</LinearLayout>
my activity file
TextView tv;
RadioGroup rg, rg1;
RadioButton rb;
TableRow tr;
int cnt = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_round__trip__search__result);
String[] str = { "Airindia", "Ai-101", "3.00", "2000", "Go Air",
"GA-101", "4.00", "2500" };
String[] str1 = { "Air India", "Ai-100", "5.00", "2500",
"Etihad Airways", "EI-200", "12.00", "3500" };
TableLayout tl = (TableLayout) findViewById(R.id.tl);
TableLayout tll = (TableLayout) findViewById(R.id.tl1);
LinearLayout l1 = (LinearLayout) findViewById(R.id.ll);
LinearLayout l11 = (LinearLayout) findViewById(R.id.ll1);
int k = 0;
int tr_id = 100;
for (int i = 0; i < str.length; i += 4) {
tr = new TableRow(this);
tr.setId(tr_id);
tr.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
for (int j = 0; j < 4; j++) {
tv = new TextView(this);
tv.setText(str[k]);
tr.setId(tr_id);
tr.addView(tv);
k++;
}
rg = new RadioGroup(this);
rb = new RadioButton(this);
//rg.addView(rb);
rb.setId(tr_id);
tr.addView(rb);
tl.addView(tr, new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
tr_id++;
}
TextView rtn = new TextView(this);
rtn.setText("Flight from XXX to YYY");
l1.addView(rtn);
int h = 0;
for (int i = 0; i < str1.length; i += 4) {
tr = new TableRow(this);
tr.setId(tr_id);
tr.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
for (int j = 0; j < 4; j++) {
tv = new TextView(this);
tv.setText(str1[h]);
tr.setId(tr_id);
tr.addView(tv);
h++;
}
rg1 = new RadioGroup(this);
rb = new RadioButton(this);
// rg1.addView(rb);
rb.setId(tr_id);
tr.addView(rb);
tll.addView(tr, new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
tr_id++;
}
Button b = new Button(this);
b.setText("book");
l11.addView(b);
b.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Toast.makeText(getApplicationContext(), "Click",
Toast.LENGTH_SHORT).show();
int id = rb.getId();
Toast.makeText(getApplicationContext(), "ID =>" + id,
Toast.LENGTH_SHORT).show();
}
});
LogCat Error Occurs when i remove the line rg.addView(rb);:
03-20 10:25:32.085: E/AndroidRuntime(6235): at android.view.ViewGroup.addViewInner(ViewGroup.java:3378)
03-20 10:25:32.085: E/AndroidRuntime(6235): at android.view.ViewGroup.addView(ViewGroup.java:3249)
03-20 10:25:32.085: E/AndroidRuntime(6235): at android.view.ViewGroup.addView(ViewGroup.java:3194)
03-20 10:25:32.085: E/AndroidRuntime(6235): at android.view.ViewGroup.addView(ViewGroup.java:3170)
03-20 10:25:32.085: E/AndroidRuntime(6235): at com.example.dynamictablelayout.Round_Trip_Search_Result.onCreate(Round_Trip_Search_Result.java:61)

rg1.addView(rb);
rb.setId(tr_id);
tr.addView(rb);
In first and third lines above you are adding parents to the same element "rb" without removing its parent. A child(rb) cannot have two parents. You must call removeView() on the child's parent first.

Adding rows and cells into TableLayout

How can I do the following:
Create a row in a TableLayout programmatically
Create three cells in the row
Add arbitrary text in each cell
Thanks for your help!

Try this..
TableLayout tableLayout = new TableLayout(this);
tableLayout.setStretchAllColumns(true);
tableLayout.setLayoutParams(new TableLayout.LayoutParams(TableLayout.LayoutParams.FILL_PARENT, TableLayout.LayoutParams.FILL_PARENT));
tableLayout.setWeightSum(3);
for (int i = 0; i < 3; i++) {
TableRow tableRow = new TableRow(this);
tableRow.setGravity(Gravity.CENTER);
tableRow.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.FILL_PARENT, TableRow.LayoutParams.FILL_PARENT, 1.0f));
for (int j = 0; j < 3; j++) {
TextView button = new TextView(this);
final int buttonNumber = (j + i * 4);
button.setText("" + buttonNumber);
button.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.FILL_PARENT, TableRow.LayoutParams.FILL_PARENT));
tableRow.addView(button);
}
tableLayout.addView(tableRow);
}
main_lay.addView(tableLayout);

TableLayout table = (TableLayout) findViewById(R.id.TableName);
TableRow tableRow = new TableRow(context);
tableRow.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.FILL_PARENT, TableRow.LayoutParams.WRAP_CONTENT));
TextView cell1= new TextView(getApplicationContext());
cell1.setText("one");
cell1.setTextColor(Color.BLACK);
cell1.setTextSize(16f);
cell1.setTypeface(tf);
TextView cell2= new TextView(getApplicationContext());
cell2.setText("two");
cell2.setTextColor(Color.BLACK);
cell2.setTextSize(16f);
cell2.setTypeface(tf);
TextView cell3= new TextView(getApplicationContext());
cell3.setText("three");
cell3.setTextColor(Color.BLACK);
cell3.setTextSize(16f);
cell3.setTypeface(tf);
tableRow.addView(cell1);
tableRow.addView(cell2);
tableRow.addView(cell3);
talbe.addView(tableRow , new TableLayout.LayoutParams(TableLayout.LayoutParams.FILL_PARENT, TableLayout.LayoutParams.WRAP_CONTENT));

If you want you can use a function like this to update your tableLayout which adds a new row with some text.
private void addRowToTableLayout(TableLayout tableLayout, String text){
TableRow tr = new TableRow(MyActivity.this);
//if you want you can customize the table row
tr.setBackgroundColor(getResources().getColor(R.color.backgroundColor));
tr.setLayoutParams(new TableRow.LayoutParams(
TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT));
TextView textView = new TextView(MyActivity.this);
//if you want you can customize the textview also
textView.setText(text);
tr.addView(textView);
tableLayout.addView(tr, new TableLayout.LayoutParams(
LayoutParams.MATCH_PARENT,
LayoutParams.WRAP_CONTENT));
}

How to set weight of tablerows elements?

I have a TableLayout which I add rows programmatically and I'm trying to set "weight" of elements contained in rows programmatically.
I'm trying to do that by setting weightSum on the TableRow and setting "weight" of the columns using the last parameter of "LayoutParams", but nothing appears; instead if I give a fixed width to elements, code works well.
This is my layout:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TableLayout
android:id="#+id/sample"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:gravity="center" >
</TableLayout>
</LinearLayout>
This is the code:
public class HomeFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.home, null);
}
#Override
public void onStart() {
super.onStart();
TableLayout tl = (TableLayout)getActivity().findViewById(R.id.sample);
TableRow tr = new TableRow(getActivity());
tr.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT));
tr.setGravity(Gravity.CENTER);
tr.setWeightSum(1f);
TableRow.LayoutParams lp;
TextView tv1 = new TextView(getActivity());
lp = new TableRow.LayoutParams(0, TableRow.LayoutParams.WRAP_CONTENT, 0.6f);
tv1.setText("AAA");
tv1.setLayoutParams(lp);
TextView tv2 = new TextView(getActivity());
lp = new TableRow.LayoutParams(0, TableRow.LayoutParams.WRAP_CONTENT, 0.4f);
tv2.setText("BBB");
tv2.setLayoutParams(lp);
tr.addView(tv1);
tr.addView(tv2);
tl.addView(tr);
}
}

Here is the updated code for setting the weightsum and column weight programmatically for a tableLayout.
TableLayout tl = (TableLayout)getActivity().findViewById(R.id.sample);
TableRow tr = new TableRow(getActivity());
tr.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT));
tr.setGravity(Gravity.CENTER);
tr.setWeightSum(4); //total row weight
TableRow.LayoutParams lp;
lp.weight = 1; //column weight
TextView tv1 = new TextView(getActivity());
lp = new TableRow.LayoutParams(0, TableRow.LayoutParams.WRAP_CONTENT, 0.6f);
tv1.setText("AAA");
tv1.setLayoutParams(lp);
TextView tv2 = new TextView(getActivity());
lp = new TableRow.LayoutParams(0, TableRow.LayoutParams.WRAP_CONTENT, 0.4f);
tv2.setText("BBB");
tv2.setLayoutParams(lp);
tr.addView(tv1);
tr.addView(tv2);
tl.addView(tr);

Android dynamic RelativeLayout

My layout.xml file looks like this:
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="270dp"
android:layout_weight="0.47" >
<LinearLayout
android:id="#+id/linearLayout2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
</LinearLayout>
</ScrollView>
I use the following code to create TextViews and Buttons inside a for loop:
View linearLayout = findViewById(R.id.linearLayout2);
for (int i=0 ; i<10; i++){
TextView textview = new TextView(this);
textview.setText("Text view" + i);
textview.setId(i);
textview.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
((LinearLayout) linearLayout).addView(textview);
Button button = new Button(this);
button.setText("View");
button.setId(i);
int width=90;
int height=60;
button.setLayoutParams(new LayoutParams(width, height));
((LinearLayout) linearLayout).addView(button);
}
I'm getting the Button below the TextView. Can anyone help me with replacing this LinearLayout with RelativeLayout so that I get the TextView and the Button side by side?

Modify your layout so you have a RelativeLayout instead of the LinearLayout:
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="270dp"
android:layout_weight="0.47" >
<RelativeLayout
android:id="#+id/relativeLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
</RelativeLayout>
</ScrollView>
Then try this to make the TextViews and Buttons sit on the same row:
RelativeLayout rl = (RelativeLayout) findViewById(R.id.relativeLayout);
for (int i = 0; i < 10; i++) {
Button button = new Button(this);
button.setText("View" + i);
button.setId(1000 + i);
int width = 90;
int height = 60;
TextView textview = new TextView(this);
textview.setText("Text view" + i);
textview.setId(2000 + i);
if (i == 0) {
RelativeLayout.LayoutParams rlp2 = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.FILL_PARENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
rlp2.addRule(RelativeLayout.ALIGN_PARENT_TOP);
rlp2.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
textview.setLayoutParams(rlp2);
rl.addView(textview);
RelativeLayout.LayoutParams rlp1 = new RelativeLayout.LayoutParams(
width, height);
rlp1.addRule(RelativeLayout.ALIGN_PARENT_TOP);
rlp1.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
button.setLayoutParams(rlp1);
rl.addView(button);
} else {
RelativeLayout.LayoutParams rlp2 = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.FILL_PARENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
rlp2.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
rlp2.addRule(RelativeLayout.BELOW, button.getId() - 1);
textview.setLayoutParams(rlp2);
rl.addView(textview);
RelativeLayout.LayoutParams rlp1 = new RelativeLayout.LayoutParams(
width, height);
rlp1.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
rlp1.addRule(RelativeLayout.BELOW, button.getId() - 1);
button.setLayoutParams(rlp1);
rl.addView(button);
}
}

View linearLayout = findViewById(R.id.linearLayout2);
for (int i=0 ; i<10; i++){
TextView textview = new TextView(this);
textview.setText("Text view" + i);
textview.setId(i);
textview.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
((LinearLayout) linearLayout).addView(textview);
Button button = new Button(this);
button.setText("View");
button.setId(i);
int width=90;
int height=60;
button.setLayoutParams(new LayoutParams(width, height));
((LinearLayout) linearLayout).addView(button);
}
replace the above with below code::
LinearLayout linearLayout = (LinearLayout)findViewById(R.id.linearLayout2);
for (int i=0 ; i<10; i++){
LinearLayout l = new LinearLayout(this);
l.setOrientation(LinearLayout.HORIZONTAL);
TextView textview = new TextView(this);
textview.setText("Text view" + i);
textview.setId(i);
l.addView(textview);
Button button = new Button(this);
button.setText("View");
button.setId(i);
button.setWidth(90);
button.setHeight(60);
l.addView(button);
linearLayout.addView(l);//if you want you can layout params linearlayout
}

try this solution::;
have a new xml file as below in res/layout of your project.
Save this as linear.xml
< LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/linear"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:id="#+id/text"
android:layout_width=" wrap_content "
android:layout_height=" wrap_content " />
<Button android:id="#+id/button"
android:layout_width="90dp"
android:layout_height="60dp" />
</ LinearLayout >
and the below code:::
LinearLayout linearLayout = (LinearLayout)findViewById(R.id.linearLayout2);
LayoutInflater inflater = (LayoutInflater)getApplicationContext().getSystemService
(Context.LAYOUT_INFLATER_SERVICE);
for (int i=0 ; i<10; i++){
View view = inflater.inflate(R.layout.linear,null);
view.findViewById(R.id.text).setText("Text view" + i);
view.findViewById(R.id.text).setTextColor(Color.BLUE);
view.findViewById(R.id.button).setText(“View");
view.findViewById(R.id.button).setTextColor(Color.BLUE);
linearLayout.addView(view);
}

You are defining LinearLayout with android:orientation="vertical", so it will tend to be one below another.
Add your textview and button to individual linear layouts, with orientation as horizontal, and add this linearLayout to the original vertical LinearLayout.
Edit: Try the following:
View linearLayout = findViewById(R.id.linearLayout2);
for (int i=0 ; i<10; i++){
View indiLyt = new View(this);
indiLyt.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
indiLyt.setOrientation(LinearLayout.HORIZONTAL);
TextView textview = new TextView(this);
textview.setText("Text view" + i);
textview.setId(i);
textview.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
((LinearLayout) indiLyt).addView(textview);
Button button = new Button(this);
button.setText("View");
button.setId(i);
int width=90;
int height=60;
button.setLayoutParams(new LayoutParams(width, height));
((LinearLayout) indiLyt).addView(button);
((LinearLayout) linearLayout).addView(indiLyt);
}