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 to create a full screen TableLayout programmatically (table height collapses unintendedly)

The following TableLayout matches exactly my requirements (it fills its parent and columns are stretched evenly):
<?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:background="#7434a6" >
<TableRow
android:layout_width="fill_parent"
android:layout_height="0px"
android:layout_weight="1" >
<TextView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#836492" />
<TextView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#103456" />
</TableRow>
<TableRow
android:layout_width="fill_parent"
android:layout_height="0px"
android:layout_weight="1" >
<TextView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#958453" />
<TextView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:background="#756aa9" />
</TableRow>
</TableLayout>
However, as I want to have the number of rows being configurable I started to create my layout programmatically:
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
Context context = getActivity();
TableLayout.LayoutParams tableParams =
new TableLayout.LayoutParams(TableLayout.LayoutParams.MATCH_PARENT,
TableLayout.LayoutParams.MATCH_PARENT);
TableRow.LayoutParams rowParams =
new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, 0, 1f);
TableRow.LayoutParams itemParams =
new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT,
TableRow.LayoutParams.MATCH_PARENT, 1f);
TableLayout tableLayout = new TableLayout(context);
tableLayout.setLayoutParams(tableParams);
tableLayout.setBackgroundColor(0xff7434a6);
for (int row = 0; row < 2; row++) {
TableRow tableRow = new TableRow(context);
tableRow.setLayoutParams(rowParams);
for (int column = 0; column < 2; column++) {
Random color = new Random();
int randomColor =
Color.argb(255, color.nextInt(256),
color.nextInt(256),
color.nextInt(256));
TextView textView = new TextView(context);
textView.setLayoutParams(itemParams);
textView.setBackgroundColor(randomColor);
tableRow.addView(textView);
}
tableLayout.addView(tableRow);
}
return tableLayout;
}
Up to a certain point this works not bad as well. Only issue I have is, that my table collapses vertically:
What is wrong here? Thought my code is doing the same as my XML. I searched and tried quite a lot but didn't get the right idea.

Try this..
LinearLayout.LayoutParams tableParams =
new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT);
LinearLayout.LayoutParams rowParams =
new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT, 1f);
LinearLayout.LayoutParams itemParams =
new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.MATCH_PARENT, 1f);
LinearLayout tableLayout = new LinearLayout(context);
tableLayout.setLayoutParams(tableParams);
tableLayout.setOrientation(LinearLayout.VERTICAL);
tableLayout.setBackgroundColor(0xff7434a6);
for (int row = 0; row < 2; row++) {
LinearLayout tableRow = new LinearLayout(context);
tableRow.setOrientation(LinearLayout.HORIZONTAL);
tableRow.setLayoutParams(rowParams);
for (int column = 0; column < 2; column++) {
Random color = new Random();
int randomColor =
Color.argb(255, color.nextInt(256),
color.nextInt(256),
color.nextInt(256));
TextView textView = new TextView(context);
textView.setLayoutParams(itemParams);
textView.setBackgroundColor(randomColor);
tableRow.addView(textView);
}
tableLayout.addView(tableRow);
}
OR In your rowParams change TableRow to TableLayout and try.
TableLayout.LayoutParams tableParams =
new TableLayout.LayoutParams(TableLayout.LayoutParams.MATCH_PARENT,
TableLayout.LayoutParams.MATCH_PARENT, 1f);
TableLayout.LayoutParams rowParams =
new TableLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT, 1f);
TableRow.LayoutParams itemParams =
new TableRow.LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT, 1f);
TableLayout tableLayout = new TableLayout(MainActivity.this);
tableLayout.setLayoutParams(tableParams);
tableLayout.setBackgroundColor(0xff7434a6);
for (int row = 0; row < 2; row++) {
TableRow tableRow = new TableRow(MainActivity.this);
tableRow.setLayoutParams(rowParams);
for (int column = 0; column < 2; column++) {
Random color = new Random();
int randomColor =
Color.argb(255, color.nextInt(256),
color.nextInt(256),
color.nextInt(256));
TextView textView = new TextView(MainActivity.this);
textView.setLayoutParams(itemParams);
textView.setBackgroundColor(randomColor);
tableRow.addView(textView);
}
tableLayout.addView(tableRow);
}

Add a dynamic tablelayout in a relativelayout above a existing button

i'm trying to add a tablelayout in a relativelayout, but i'm havind some problems to put this tablelayout above a existing button, i can only but it below it.
XML
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:stretchColumns="0,1"
tools:context=".MainActivity" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_horizontal"
android:text="Button" />
the lp.addRule(RelativeLayout.ABOVE, idx); isn't working
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// get the size of the screen to set the size of the buttons according
// to the level
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int level = 3;
int width = size.x - (size.x / level);
int btsize = width / level;
// Get the main Layout
RelativeLayout rLayout = (RelativeLayout) findViewById(R.id.main);
//
TableLayout tLayout = new TableLayout(this);
int id = 0;
for (int i = 0; i < level; i++) {
// Create the TableRow
TableRow tRow = new TableRow(this);
for (int j = 0; j < level; j++) {
id++;
Button bt = new Button(this);
bt.setId(id);
bt.setWidth(btsize);
bt.setHeight(btsize);
bt.setMinimumWidth(0);
bt.setMinimumHeight(0);
tRow.addView(bt); // add button into the row
}
tLayout.addView(tRow);// add row into the table
}
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
int idx = findViewById(R.id.button1).getId();
lp.addRule(RelativeLayout.ABOVE, idx);
rLayout.addView(tLayout,lp);// add table into the relativelayout
}

you can try this...
put this code in your oncreate() method
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
relay = (RelativeLayout)findViewById(R.id.rlayout);
LayoutParams layoutprams = new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);
TableLayout table=new TableLayout(this);
relay.addView(table);

Adding Scrollbar to Dynamic Table-View in Relative Layout

I have created dynamic table-layout dynamically in Relative-Layout. I am adding text-views dynamically. I have 9 fields to display. How can i put horizontal and vertical scroll bar in it ?
Code:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view);
// Show the Up button in the action bar.
setupActionBar();
TableLayout tableLayout = new TableLayout(getApplicationContext());
TableRow tableRow;
TextView textView;
............................
............................
............................
for (int i = 0; i < rows; i++)
{ //4 rows
tableRow = new TableRow(getApplicationContext());
for (int j = 0; j < columns; j++)
{ //3 columns
textView = new TextView(getApplicationContext());
textView.setText(temp[k++]);
textView.setPadding(15, 15, 15, 15);
tableRow.addView(textView);
}
tableLayout.addView(tableRow);
}
setContentView(scrollView);
setContentView(tableLayout);

Create your layout.xml file like this
<RelativeLayout xmlns:ads="http://schemas.android.com/apk/res/com.smartcloud.podcast_he"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/bg_iphone" >
<ScrollView
android:id="#+id/ScrollView03"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/headingtitle2" >
</ScrollView>
</RelativeLayout>
And then in code
setContentView(R.layout.activity_view);
// Show the Up button in the action bar.
setupActionBar();
ScrollView scrollview = (ScrollView) findViewById(R.id.ScrollView03);
TableLayout tableLayout = new TableLayout(getApplicationContext());
TableRow tableRow;
TextView textView;
............................
............................
............................
for (int i = 0; i < rows; i++)
{ //4 rows
tableRow = new TableRow(getApplicationContext());
for (int j = 0; j < columns; j++)
{ //3 columns
textView = new TextView(getApplicationContext());
textView.setText(temp[k++]);
textView.setPadding(15, 15, 15, 15);
tableRow.addView(textView);
}
tableLayout.addView(tableRow);
}
scrollview.addView(tableLayout );
Remove this 2 lines
setContentView(scrollView);
setContentView(tableLayout);

Make your top level layout a ScrollView
scrollView.addView(tableLayout);
setContentView(scrollView);

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);
}