Programmatically add content to a TableLayout on Android

Programmatically add content to a TableLayout on Android - android

I am trying to add rows to a table after a click to a button (so after the generation of the activity).
My XML code is:
<TableLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:stretchColumns="0,1"
android:id="#+id/result_table">
<TableRow
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
style="#style/MyHeader"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Col1" />
<TextView
style="#style/MyHeader"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Col2" />
</TableRow>
</TableLayout>
So when I load the activity I have my table with my only row. Then when I click on my button I do:
resultTable = (TableLayout)findViewById(R.id.result_table);
LayoutParams rowLayoutParams = new TableRow.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
LayoutParams cellLayoutParams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
TableRow tableRow;
TextView cellValue;
for(Asdf a : as) {
tableRow = new TableRow(this);
tableRow.setLayoutParams(rowLayoutParams);
cellValue = new TextView(this);
cellValue.setText(a.getText());
cellValue.setLayoutParams(cellLayoutParams);
cellValue.setTextAppearance(this, R.style.MyText);
tableRow.addView(cellValue);
cellValue = new TextView(this);
cellValue.setText("asdf");
cellValue.setLayoutParams(cellLayoutParams);
cellValue.setTextAppearance(this, R.style.MyText);
tableRow.addView(cellValue);
resultTable.addView(tableRow);
}
resultTable.invalidate();
But it doesn't add anything, and I am sure about that the loop iterates. I don't get any warning/exception in the logcat.
Can you help me please ??

Try to change the LayoutParams for the added Views like this:
TableLayout.LayoutParams rowLayoutParams = new TableLayout.LayoutParams(TableLayout.LayoutParams.FILL_PARENT, TableLayout.LayoutParams.WRAP_CONTENT);
TableRow.LayoutParams cellLayoutParams = TableRow.new LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT);

Related

How to add new row dynamically to table layout

In my android app, I have a table layout. I want to dynamically insert rows. But the problem is the rows are being added horizontally. I want each tablerow to be stacked vertically. I have this so far:
TableLayout mytable = (TableLayout)findViewById(R.id.studentContainer);
TableRow tablerow = new TableRow(this);
tablerow.setOrientation(TableRow.VERTICAL);
EditText g = new EditText(this);
g.setText("AAAAAAAAA");
g.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT));
EditText g2 = new EditText(this);
g2.setText("BBBBBBBBBB");
g2.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT));
tablerow.addView(g);
tablerow.addView(g2);
mytable.addView(tablerow, new TableLayout.LayoutParams(TableLayout.LayoutParams.WRAP_CONTENT, TableLayout.LayoutParams.WRAP_CONTENT));
TableRow tablerow2 = new TableRow(this);
tablerow2.setOrientation(TableRow.VERTICAL);
EditText g4 = new EditText(this);
g4.setText("AAAAAAAAA");
g4.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT));
EditText g5 = new EditText(this);
g5.setText("BBBBBBBBBB");
g5.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT));
tablerow.addView(g4);
tablerow.addView(g5);
mytable.addView(tablerow2, new TableLayout.LayoutParams(TableLayout.LayoutParams.WRAP_CONTENT, TableLayout.LayoutParams.WRAP_CONTENT));
XML
<TableLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="#+id/studentContainer" >
</TableLayout >
Does anyone know whats wrong here?
Thanks

Try to put the first row in the xml and rotate the entire table, edit the text_views if necessary. Like this
XML
<TableLayout
android:id="#+id/list_tableLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:rotation="-90"
android:stretchColumns="0,1,2,3" >
<TableRow
android:id="#+id/tableRow1"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Column1"
android:textColor="#000000"/>
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Column2"
android:textColor="#000000"/>
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Column3"
android:textColor="#000000"/>
<TextView
android:id="#+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:text="Column4"
android:textColor="#000000"/>
</TableRow>
</TableLayout>
and then code like this
TableRow tr = new TableRow(this);
tr.setPadding(0,20,0,20);
tr.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
TextView tv_item1 = new TextView(this);
TextView tv_item2 = new TextView(this);
TextView tv_item3 = new TextView(this);
TextView tv_item4 = new TextView(this);
tv_item1.setText(M_Number);
tv_item1.setGravity(Gravity.CENTER);
tv_item2.setText(M_Number);
tv_item2.setGravity(Gravity.CENTER);
tv_item3.setText(M_Number);
tv_item3.setGravity(Gravity.CENTER);
tv_item4.setText(M_Number);
tv_item4.setGravity(Gravity.CENTER);
tr.addView(tv_item1);
tr.addView(tv_item2);
tr.addView(tv_item3);
tr.addView(tv_item4);
Table.addView(tr, new TableLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));

Better you have a table row item in XML, inflate in as a new view and set data accordingly.
then add that view to the table layout

adding textViews programatically doesn't print anything

i have three lists with the same number of elements in each other, i want to put first element of all lists in a tablerow, then second element of all lists in another tablerow,
the lists are :
competitoinsIDs = new LinkedList<String>();
marks = new LinkedList<String>();
numOfQuestions = new LinkedList<String>();
so i use this function:
private void addTextViews() {
// TODO Auto-generated method stub
TableLayout tbl=(TableLayout) findViewById(R.id.tlMarksTable);
for(int ctr=0;ctr<marks.size();ctr++)
{
//Creating new tablerows and textviews
TableRow row=new TableRow(this);
TextView txt1=new TextView(this);
TextView txt2=new TextView(this);
TextView txt3=new TextView(this);
//setting the text
txt1.setText(competitoinsIDs.get(ctr));
txt2.setText(marks.get(ctr));
txt3.setText(numOfQuestions.get(ctr));
//the textviews have to be added to the row created
row.addView(txt1);
row.addView(txt2);
row.addView(txt3);
tbl.addView(row);
}
}
and this is the layout xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TableLayout
android:id="#+id/tlMarksTable"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TableRow
android:id="#+id/tableRow1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="5dip"
android:weightSum="2" >
<TextView
android:id="#+id/tvMarksCompetitionID"
android:layout_weight="1"
android:text="Competition"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="#+id/tvMarksMarks"
android:layout_weight="1"
android:text="Marks"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="#+id/tvMarksQuestionsNum"
android:layout_weight="1"
android:text="Questions"
android:textAppearance="?android:attr/textAppearanceMedium" />
</TableRow>
</TableLayout>
</FrameLayout>
what am i doing wrong please ?

The problem is that you don't set proper LayoutParams on the TableRows and TextView that you add to the layout:
private void addTextViews() {
TableLayout tbl=(TableLayout) findViewById(R.id.tlMarksTable);
for(int ctr=0;ctr<marks.size();ctr++) {
TableRow row=new TableRow(this);
TableLayout.LayoutParams tlp = new TableLayout.LayoutParams(TableLayout.LayoutParams.FILL_PARENT, TableLayout.LayoutParams.WRAP_CONTENT);
TextView txt1=new TextView(this);
TableRow.LayoutParams text1lp = new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT);
TextView txt2=new TextView(this);
TableRow.LayoutParams text2lp = new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT);
TextView txt3=new TextView(this);
TableRow.LayoutParams text3lp = new TableRow.LayoutParams(TableRow.LayoutParams.WRAP_CONTENT, TableRow.LayoutParams.WRAP_CONTENT);
txt1.setText(competitoinsIDs.get(ctr));
txt1.setLayoutParams(text1lp);
txt2.setText(marks.get(ctr));
txt2.setLayoutParams(text2lp);
txt3.setText(numOfQuestions.get(ctr));
txt3.setLayoutParams(text3lp);
row.addView(txt1);
row.addView(txt2);
row.addView(txt3);
row.setLayoutParams(tlp);
tbl.addView(row);
}
}
This is assuming that your data lists aren't empty.

ADD as TableRow and TextView To TableLayout :
for(int ctr=0;ctr<marks.size();ctr++)
{
//YOUR CODE....
TableRow row=new TableRow(this);
row.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
TextView txt1=new TextView(this);
txt1.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
TextView txt2=new TextView(this);
txt1.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
TextView txt3=new TextView(this);
txt3.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
//YOUR CODE....
}

android create textViews in tableRows programmatically

I have these three lists with the same number of elements
List<String>competitoinsIDs = new LinkedList<String>();
List<String>marks = new LinkedList<String>();
List<String>numOfQuestions = new LinkedList<String>();
I want to put the first element of each list in a tablerow , then the second element of each list in another tablerow, would you help me please, this is the xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TableLayout
android:id="#+id/tlMarksTable"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TableRow
android:id="#+id/tableRow1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="5dip"
android:weightSum="2" >
<TextView
android:id="#+id/tvMarksCompetitionID"
android:layout_weight="1"
android:text="Competition"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="#+id/tvMarksMarks"
android:layout_weight="1"
android:text="Marks"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="#+id/tvMarksQuestionsNum"
android:layout_weight="1"
android:text="Questions"
android:textAppearance="?android:attr/textAppearanceMedium" />
</TableRow>
</TableLayout>
</FrameLayout>

First change your XML file to:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TableLayout
android:id="#+id/tlMarksTable"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</TableLayout>
</FrameLayout>
We'll add all the content dynamically.
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
List<String>competitoinsIDs = new LinkedList<String>();
List<String>marks = new LinkedList<String>();
List<String>numOfQuestions = new LinkedList<String>();
//make sure that the lists contain data or else display will be blank screen
TableRow.LayoutParams params1=new TableRow.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT,1.0f);
TableRow.LayoutParams params2=new TableRow.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT);
TableLayout tbl=(TableLayout) findViewById(R.id.tlMarksTable);
for(int ctr=0;ctr<marks.size();ctr++)
{
//Creating new tablerows and textviews
TableRow row=new TableRow(this);
TextView txt1=new TextView(this);
TextView txt2=new TextView(this);
TextView txt3=new TextView(this);
//setting the text
txt1.setText(competitoinsIDs.get(ctr));
txt2.setText(marks.get(ctr));
txt3.setText(numOfQuestions.get(ctr));
txt1.setLayoutParams(params1);
txt2.setLayoutParams(params1);
txt3.setLayoutParams(params1);
//the textviews have to be added to the row created
row.addView(txt1);
row.addView(txt2);
row.addView(txt3);
row.setLayoutParams(params2);
tbl.addView(row);
}
}

please see the android code here and use it in your activities onCreate method
setContentView(R.layout.table_layout_xml); // use your layout xml file here
TableLayout tableLayout = (TableLayout)findViewById(R.id.tlMarksTable);
List<String>competitoinsIDs = new LinkedList<String>();
List<String>marks = new LinkedList<String>();
List<String>numOfQuestions = new LinkedList<String>();
// adding static values to test the layout. use your dynamic data here
competitoinsIDs.add("123");
competitoinsIDs.add("124");
competitoinsIDs.add("125");
marks.add("56");
marks.add("57");
marks.add("58");
numOfQuestions.add("10");
numOfQuestions.add("11");
numOfQuestions.add("12");
TableRow tableRows[] = new TableRow[competitoinsIDs.size()];
for (int i = 0; i < tableRows.length; i++) {
tableRows[i] = new TableRow(this);
tableRows[i].setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
tableRows[i].setWeightSum(2.0f);
tableRows[i].setPadding(5, 5, 5, 5);
TextView text = new TextView(this);
text.setLayoutParams(new android.widget.TableRow.LayoutParams(android.widget.TableRow.LayoutParams.WRAP_CONTENT,
android.widget.TableRow.LayoutParams.WRAP_CONTENT, 1.0f));
text.setText(competitoinsIDs.get(i));
tableRows[i].addView(text);
text = new TextView(this);
text.setLayoutParams(new android.widget.TableRow.LayoutParams(android.widget.TableRow.LayoutParams.WRAP_CONTENT,
android.widget.TableRow.LayoutParams.WRAP_CONTENT, 1.0f));
text.setText(marks.get(i));
tableRows[i].addView(text);
text = new TextView(this);
text.setLayoutParams(new android.widget.TableRow.LayoutParams(android.widget.TableRow.LayoutParams.WRAP_CONTENT,
android.widget.TableRow.LayoutParams.WRAP_CONTENT, 1.0f));
text.setText(numOfQuestions.get(i));
tableRows[i].addView(text);
tableLayout.addView(tableRows[i]);
}

RelativeLayout Elements are incorrectly overlapping

I'm trying to build a part of a Android View Programmatically, but unfortunately I'm having some problems with the RelativeLayout. it makes my Elements overlay on eachother
This is my Code:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.insertnew_layout);
LinearLayout ll = (LinearLayout) findViewById(R.id.container);
ll.setOrientation(LinearLayout.VERTICAL);
TableLayout tl = new TableLayout(this);
tl.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
// fill content
for (int i = 0; i < 3; i++) {
TableRow tr = new TableRow(this);
tr.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
RelativeLayout rl = new RelativeLayout(this);
rl.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
TextView score = new TextView(this);
score.setText(""+i);
RelativeLayout.LayoutParams lpScore = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.FILL_PARENT);
lpScore.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
score.setLayoutParams(lpScore);
TextView description = new TextView(this);
description.setText("this is my description");
RelativeLayout.LayoutParams lpDescription = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.FILL_PARENT);
lpDescription.addRule(RelativeLayout.RIGHT_OF, score.getId());
description.setLayoutParams(lpDescription);
CheckBox checkbox = new CheckBox(this);
RelativeLayout.LayoutParams lpCheckbox = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.FILL_PARENT);
lpCheckbox.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
checkbox.setLayoutParams(lpCheckbox);
rl.addView(score);
rl.addView(description);
rl.addView(checkbox);
tl.addView(rl);
}
ll.addView(tl);
This is what it looks like:
As you can see, the "description" is on top of of the "score".
Here is the same code in xml:
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/tableLayoutTextEntry" >
<TableRow
android:id="#+id/tableRowTextEntry"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<RelativeLayout
android:id="#+id/relativeLayout1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/score"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:text="score" />
<TextView
android:id="#+id/description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#+id/score"
android:text="description" />
<CheckBox
android:id="#+id/checkBox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:text="select" />
</RelativeLayout>
</TableRow>
</TableLayout>
And here is what it looks like in xml:
As you can see, in xml, the toRightOf-command works as expected - the description is to the right of the score
How is that possible? Shouldnt the line
lpDescription.addRule(RelativeLayout.RIGHT_OF, score.getId());
do the same thing?

At the moment you are calling it, score.getId() will return -1 (invalid), because it has not been added yet to the screen with the whole layout processed.
You will have to set the id manually with setId() before calling getId() and it should all work fine.

Adding data row dynamically

I'm using eclipse + android SDK.
I'm trying to create a table with data provided by sensors. I get the information correctly, by i'm having problems to make a table to show it in XML dinamically.
This is the sensorinfo.XML:
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:stretchColumns="1"
android:id="#+id/SensorInfoTableLayout">
<TableRow>
<TextView
android:layout_column="1"
android:text="#string/sensor_name_title"
android:padding="3dip" />
<TextView
android:layout_column="2"
android:text="#string/sensor_type_title"
android:padding="3dip" />
<TextView
android:layout_column="3"
android:text="#string/sensor_value_title"
android:padding="3dip" />
<TextView
android:layout_column="4"
android:text="#string/sensor_unit_title"
android:padding="3dip" />
</TableRow>
<View
android:layout_height="4dip"
android:background="#FF909090" />
</TableLayout>
And this is the code of my activity:
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
getSensorInfo();
setContentView(R.layout.sensorinfo);
setInfoByView();
}
And
private void setInfoByView()
{
/* Find Tablelayout defined in xml */
TableLayout myTableLayout = (TableLayout)findViewById(R.id.SensorInfoTableLayout);
/* Create a new row to be added. */
TableRow myTableRow = new TableRow(this);
myTableRow.setLayoutParams(new LayoutParams(
LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
/* Create a Button to be the row-content. */
Button b = new Button(this);
b.setText("Dynamic Button");
b.setLayoutParams(new LayoutParams(
LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
myTableRow.setBackgroundColor(5);
/* Add Button to row. */
myTableRow.addView(b);
/* Add row to TableLayout. */
myTableLayout.addView(myTableRow,new TableLayout.LayoutParams(
LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
}
THIS IS A TEST, i'm trying to include a button dinamically, if work, i will put the information i get from getSensorInfo();
But my Activity looks like this:
What could I be doing wrong?
All the info i found was THIS, but the answers didn't help me.

First of all create one Table Layout in your XML file like this :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#BFD6E8">
<ScrollView android:id="#+id/image_scroll"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TableLayout android:id="#+id/image_table"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
</TableLayout>
</ScrollView>
</LinearLayout>
Then use this code for creating dynamic row inside the Table Layout :
TableLayout image_table=null;
image_table=(TableLayout)findViewById(R.id.image_table);
for(int i=0; i<10; i++){
TableRow tableRow=new TableRow(this);
tableRow.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
tableRow.setGravity(Gravity.CENTER_HORIZONTAL);
tableRow.setPadding(5, 5, 5, 5);
for(int j=0; j<1; j++){
Button bttn=new Button(this);
bttn.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
bttn.setText(Hello);
tableRow.addView(image, 200, 200);
}
image_table.addView(tableRow);
}
FINAL (test) SOLUTION:
private void setInfoByView2()
{
TableLayout myTableLayout = null;
TableRow myTableRow = new TableRow(this);
myTableLayout = (TableLayout)findViewById(R.id.SensorInfoTableLayout);
myTableRow.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
//myTableRow.setGravity(Gravity.CENTER_HORIZONTAL);
myTableRow.setPadding(5, 5, 5, 5);
Button bttn = new Button(this);
bttn.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
bttn.setText("Hello");
myTableRow.addView(bttn, 200, 200);
myTableLayout.addView(myTableRow);
}
And the button is visible now.

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Programmatically add content to a TableLayout on Android - android

Related

How to add new row dynamically to table layout

adding textViews programatically doesn't print anything

android create textViews in tableRows programmatically

RelativeLayout Elements are incorrectly overlapping

Adding data row dynamically

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