final TableLayout table = (TableLayout) findViewById(R.id.tableLayout);
TableRow row = new TableRow(this);
TextView t2 = new TextView(this);
t2.setText("test");
row.addView(t2);
Button bu = new Button(this);
bu.setBackgroundResource(R.drawable.del);
bu.setOnClickListener(new Button.OnClickListener() {
#Override
public void onClick(View v) {
//I need to delete the tablerow
//how to do?
}
});
row.addView(bu);
table.addView(row, new TableLayout.LayoutParams(WC, WC));
**
i want to delete tablerow in bu.setOnClickListener
how to do removeViewAt() ,i cant find indexId
**
use removeView for removing tablerow as:
table.removeView(row);
NOTE: If they don't have unique id then use:
table.removeView(rowIndex);
and by using removeViewAt
for(int i = 0, j < table.getChildCount(); i < j; i++){
// then, you can remove the the row you want...
// for instance...
TableRow row = getChildAt(i);
if( something you want to check ) {
removeViewAt(i);
// or...
removeView(row);
}
}
Related
I want to add buttons dynamically. I am adding multiple buttons dynamically but I want to add the buttons in following pattern:
[BUTTON1] [BUTTON2]
[BUTTON3] [BUTTON4]
[BUTTON5] [BUTTON6]
That means I want to add only 2 buttons in a row that is dynamically.
I have tried many options.
one of them is:
LinearLayout ll = (LinearLayout) findViewById(R.id.buttonlayout);
Button[][] buttonArray = new Button[count][count];
TableLayout table = new TableLayout(this);
for (int row = 0; row < count; row++) {
TableRow currentRow = new TableRow(this);
for (int button = 0; button < row; button++) {
Button currentButton = new Button(this);
// you could initialize them here
currentButton.setOnClickListener(this);
// you can store them
buttonArray[row][button] = currentButton;
// and you have to add them to the TableRow
currentRow.addView(currentButton);
}
// a new row has been constructed -> add to table
table.addView(currentRow);
}
and finally takes that new table and add it to your layout. ll.addView(table);
Note: count of button could be random.
How can I do that?
Use vertical LinearLayout in XML. Then programmatically create horizontal LinearLayout and add buttons in horizontal layout. For each line, create and add new horizontal layout.
XML:
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/buttonlayout">
</LinearLayout>
ACTIVITY:
public class dynamicButtons extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.myLayout);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
int numberOfRows = 3;
int numberOfButtonsPerRow = 2;
int buttonIdNumber = 0;
final LinearLayout verticalLayout= LinearLayout)findViewById(R.id.buttonlayout);
for(int i=0;i<numberOfRows;i++){
LinearLayout newLine = new LinearLayout(this);
newLine.setLayoutParams(params);
newLine.setOrientation(LinearLayout.HORIZONTAL);
for(int j=0;j<numberOfButtonsPerRow;j++){
Button button=new Button(this);
// You can set button parameters here:
button.setWidth(20);
button.setId(buttonIdNumber);
button.setLayoutParams(params);
button.setText("Button Name");
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent is = new Intent(getApplicationContext(), someOtherApplication.class);
is.putExtra("buttonVariable", buttonIdNumber);
startActivity(is);
}
});
newLine.addView(button);
buttonIdNumber++;
}
verticalLayout.addView(newLine);
}
}
}
try this code:
TableLayout layout = new TableLayout (this);
layout.setLayoutParams( new TableLayout.LayoutParams(TableLayout.LayoutParams.WRAP_CONTENT, TableLayout.LayoutParams.WRAP_CONTENT));
for (int i=0; i<2; i++) { //number of rows
TableRow tr = new TableRow(this);
for (int j=0; j<2; j++) { //number of columns
Button b = new Button (this);
b.setText("Button:"+i+j);
b.setTextSize(10.0f);
b.setOnClickListener(this);
tr.addView(b, 30,30);
}
layout.addView(tr);
}
As your number of button is random u can use:
int total = 20; //random number of buttons
int column = 3; //specify the column number
int row = total / column;
now use the column and row value to dynamically show buttons
Do something like this:
LinearLayout ll_Main = new LinearLayout(getActivity());
LinearLayout ll_Row01 = new LinearLayout(getActivity());
LinearLayout ll_Row02 = new LinearLayout(getActivity());
ll_Main.setOrientation(LinearLayout.VERTICAL);
ll_Row01.setOrientation(LinearLayout.HORIZONTAL);
ll_Row02.setOrientation(LinearLayout.HORIZONTAL);
final Button button01 = new Button(getActivity());
final Button button02 = new Button(getActivity());
final Button button03 = new Button(getActivity());
final Button button04 = new Button(getActivity());
ll_Row01.addView(button01);
ll_Row01.addView(button02);
ll_Row02.addView(button03);
ll_Row02.addView(button04);
ll_Main.addView(ll_Row01);
ll_Main.addView(ll_Row02);
button04.setVisibility(View.INVISIBLE);
button04.setVisibility(View.VISIBLE);
Create a listview/recyclerview with custom item that hold 2 button as you mentioned in your question, than populate that listView with the buttons (inside the adapter if item index % 2 == 0 it will take the left position otherwise the right position).
Only show one row(last data)
I did not get multiple row.There is showing only one row. How to solve this problem.
//Activity
public class TableViewActivity extends AppCompatActivity {
TableLayout tableLayout;
TableRow tableRow;
TextView textView1, textView2;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_table_view);
tableLayout = (TableLayout) findViewById(R.id.tableLayout);
tableRow = (TableRow) findViewById(R.id.tableRow2);
textView1 = (TextView) findViewById(R.id.TextViewRowTwo1);
textView2 = (TextView) findViewById(R.id.TextViewRowTwo2);
List<Student> students = new ArrayList<>();
students.add(new Student(1, "Mahmud"));
students.add(new Student(2, "Saiful"));
students.add(new Student(3, "Monir"));
students.add(new Student(4, "Milton"));
for (int j = 0; j< students.size(); j++) {
textView1.setText(students.get(j).getId()+"");
textView2.setText(students.get(j).getName());
// TEXTVIEW
if(textView1.getParent()!=null)
((ViewGroup)textView1.getParent()).removeView(textView1); // <- fix
tableRow.addView(textView1);
if(textView2.getParent()!=null)
((ViewGroup)textView2.getParent()).removeView(textView2); // <- fix
tableRow.addView(textView2);
if(tableRow.getParent()!=null)
((ViewGroup)tableRow.getParent()).removeView(tableRow); // <- fix
tableLayout.addView(tableRow);
}
setContentView(tableLayout);
}
}
You need to create the TableRow Dynamically and whenever you put the values in tablerow you need to add that tablerow to tablelayut.
for (int j = 0; j< students.size(); j++) {
TableRow tableRow = new TableRow(this);
textView1.setText(students.get(j).getId()+"");
textView2.setText(students.get(j).getName());
// TEXTVIEW
if(textView1.getParent()!=null)
((ViewGroup)textView1.getParent()).removeView(textView1); // <- fix
tableRow.addView(textView1);
tableLayout.addView(tableRow);
if(textView2.getParent()!=null)
((ViewGroup)textView2.getParent()).removeView(textView2); // <- fix
tableRow.addView(textView2);
tableLayout.addView(tableRow);
if(tableRow.getParent()!=null)
((ViewGroup)tableRow.getParent()).removeView(tableRow); // <- fix
tableLayout.addView(tableRow);
}
Hope this will work for you.
I think that in your case is better for you to use a ListView. It's more easy and is designed to show a list of objects like your students.
https://developer.android.com/guide/topics/ui/layout/listview.html
I have a table layout with table rows being added dynamically from the database. I need to programmatically choose only one table row and deselect the previous choosen. Similar to a listview onItemClick. For some reasons I can't use a ListView.
You could add click listener on table rows. See the code below:
private int selectedIndex = -1;
private TableLayout tableLayout;
private void initTableLayout() {
View.OnClickListener clickListener = new View.OnClickListener() {
#Override
public void onClick(View v) {
Integer index = (Integer) v.getTag();
if (index != null) {
selectRow(index);
}
}
};
tableLayout = (TableLayout) findViewById(R.id.table_layout);
final TableRow tr = new TableRow(this);
tr.setTag(0);
tr.setOnClickListener(clickListener);
// Add views on tr
tableLayout.addView(tr, 0, new TableLayout.LayoutParams(
TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT));
final TableRow tr2 = new TableRow(this);
tr2.setTag(1);
tr2.setOnClickListener(clickListener);
// Add views on tr2
tableLayout.addView(tr2, 1, new TableLayout.LayoutParams(
TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.WRAP_CONTENT));
....
}
private void selectRow(int index) {
if (index != selectedIndex) {
if (selectedIndex >= 0) {
deselectRow(selectedIndex);
}
TableRow tr = (TableRow) tableLayout.getChildAt(index);
tr.setBackgroundColor(Color.GRAY); // selected item bg color
selectedIndex = index;
}
}
private void deselectRow(int index) {
if (index >= 0) {
TableRow tr = (TableRow) tableLayout.getChildAt(index);
tr.setBackgroundColor(Color.TRANSPARENT);
}
}
I am trying to create a simple table programmatically. But the code crashes when row2.addView is called. With this error:
Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
Here is my code:
import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.contnt_2);
TableLayout tableLayout = new TableLayout(this);
TableRow.LayoutParams tableRowParams = new TableRow.LayoutParams();
tableRowParams.setMargins(1, 1, 1, 1);
TableRow row1 = new TableRow(this);
TableRow row2 = new TableRow(this);
TableRow row3 = new TableRow(this);
TextView text1 = new TextView(this);
text1.setText("DDDDDDDDDDDDD");
text1.setBackgroundColor(Color.GRAY);
TextView text2 = new TextView(this);
text2.setText("DDDDDDDDDDDDD");
text2.setBackgroundColor(Color.GRAY);
TextView text3 = new TextView(this);
text3.setText("DDDDDDDDDDDDD");
text3.setBackgroundColor(Color.GRAY);
row1.addView(text1, tableRowParams);
row1.addView(text2, tableRowParams);
row1.addView(text3, tableRowParams);
row2.addView(text1, tableRowParams);
row2.addView(text2, tableRowParams);
row2.addView(text3, tableRowParams);
row3.addView(text1, tableRowParams);
row3.addView(text2, tableRowParams);
row3.addView(text3, tableRowParams);
tableLayout.addView(row1);
tableLayout.addView(row2);
tableLayout.addView(row3);
setContentView(tableLayout);
}
I can't find a reason why it happens. how correctly to add rows to table ? Can you help me out?
This is because you created three TextViews and added them to your first TableRow with this code:
row1.addView(text1, tableRowParams);
row1.addView(text2, tableRowParams);
row1.addView(text3, tableRowParams);
Then tried adding that same TextView that you already created to Row 2.
You can't add the same TextView to multiple TableRows, because as the error says, each TextView can only have one parent.
You need to create three different TextViews for EACH TableRow.
The main problem with your approach: A view can't be a child of more than one parent in Android.
Here's a tutorial on how to create a TableLayout programmatically, maybe you get some ideas for improvements to your logic:
http://www.prandroid.com/2014/05/creating-table-layout-dynamically-in.html
I'll paste it here as well just in case:
public class MainActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String[] row = { "ROW1", "ROW2", "Row3", "Row4", "Row 5", "Row 6",
"Row 7" };
String[] column = { "COLUMN1", "COLUMN2", "COLUMN3", "COLUMN4",
"COLUMN5", "COLUMN6" };
int rl=row.length; int cl=column.length;
Log.d("--", "R-Lenght--"+rl+" "+"C-Lenght--"+cl);
ScrollView sv = new ScrollView(this);
TableLayout tableLayout = createTableLayout(row, column,rl, cl);
HorizontalScrollView hsv = new HorizontalScrollView(this);
hsv.addView(tableLayout);
sv.addView(hsv);
setContentView(sv);
}
public void makeCellEmpty(TableLayout tableLayout, int rowIndex, int columnIndex) {
// get row from table with rowIndex
TableRow tableRow = (TableRow) tableLayout.getChildAt(rowIndex);
// get cell from row with columnIndex
TextView textView = (TextView)tableRow.getChildAt(columnIndex);
// make it black
textView.setBackgroundColor(Color.BLACK);
}
public void setHeaderTitle(TableLayout tableLayout, int rowIndex, int columnIndex){
// get row from table with rowIndex
TableRow tableRow = (TableRow) tableLayout.getChildAt(rowIndex);
// get cell from row with columnIndex
TextView textView = (TextView)tableRow.getChildAt(columnIndex);
textView.setText("Hello");
}
private TableLayout createTableLayout(String [] rv, String [] cv,int rowCount, int columnCount) {
// 1) Create a tableLayout and its params
TableLayout.LayoutParams tableLayoutParams = new TableLayout.LayoutParams();
TableLayout tableLayout = new TableLayout(this);
tableLayout.setBackgroundColor(Color.BLACK);
// 2) create tableRow params
TableRow.LayoutParams tableRowParams = new TableRow.LayoutParams();
tableRowParams.setMargins(1, 1, 1, 1);
tableRowParams.weight = 1;
for (int i = 0; i < rowCount; i++) {
// 3) create tableRow
TableRow tableRow = new TableRow(this);
tableRow.setBackgroundColor(Color.BLACK);
for (int j= 0; j < columnCount; j++) {
// 4) create textView
TextView textView = new TextView(this);
// textView.setText(String.valueOf(j));
textView.setBackgroundColor(Color.WHITE);
textView.setGravity(Gravity.CENTER);
String s1 = Integer.toString(i);
String s2 = Integer.toString(j);
String s3 = s1 + s2;
int id = Integer.parseInt(s3);
Log.d("TAG", "-___>"+id);
if (i ==0 && j==0){
textView.setText("0==0");
} else if(i==0){
Log.d("TAAG", "set Column Headers");
textView.setText(cv[j-1]);
}else if( j==0){
Log.d("TAAG", "Set Row Headers");
textView.setText(rv[i-1]);
}else {
textView.setText(""+id);
// check id=23
if(id==23){
textView.setText("ID=23");
}
}
// 5) add textView to tableRow
tableRow.addView(textView, tableRowParams);
}
// 6) add tableRow to tableLayout
tableLayout.addView(tableRow, tableLayoutParams);
}
return tableLayout;
}
}
I have List of route in tablelayout.
CheckBox & TextView created dynamically.
I set the checkbox id.
I want to do the selectall & deselectAll . How we can implement?
I created checkBox using coding.then How can call this CheckBox cb = (CheckBox)view.findViewById(R.id.????);
tl = (TableLayout) findViewById(R.id.dailyDRoute);
ArrayList<SalesRoutes> routeList = getSalesRoute();
for (int i = 0; i < routeList.size(); i++) {
TableRow tr = new TableRow(this);
CheckBox ch = new CheckBox(this);
ch.setHeight(1);
ch.setId(i);
TextView tv2 = new TextView(this);
tr.addView(ch);
tv2.setText(routeList.get(i).getDescription());
tv2.setTextColor(Color.BLACK);
tr.addView(tv2);
tl.addView(tr);
}
}
public void deselectAll(View view){
// CheckBox cb = (CheckBox)view.findViewById(R.id.);
}
public void selectAll(View view){
}
Please help me ...
Thanks in advance..
R.id.* are integer constants generated during build process. Actually, you need to pass an integer id to findViewById (same integer as you set us as id in init block).
Like this:
for (int i = 0; i < tl.getChildCount(); i++) {
CheckBox cb = (CheckBox)view.findViewById(i);
cb.setChecked(true);
}
But as for me this is not very reliable because id set in runtime can be not unique and I think this loop is better:
for (int i = 0; i < tl.getChildCount(); i++) {
CheckBox cb = (CheckBox)((TableRow)tl.getChildAt(i)).getChildAt(0);
cb.setChecked(true);
}