Building xml relative layout programmatically - android

I'm trying to update/populate xml on run-time. The textViews are displayed fine but it seems like it fails position them correctly after the first item (see the else statement). Is it because getId() is not recognised or am I totally wrong?
for(int x=1; x<13; x++){
String prompt="PROMPT_"+String.valueOf(x);
String promptValue = myTacorCursor.getString(myTacorCursor.getColumnIndex(prompt));
//if not empty draw a row
if (!promptValue.equals("")){
//insert new rows into layout
RelativeLayout myLayout = (RelativeLayout) findViewById(R.id.RelativeLayout1);
TextView promptLabel = new TextView(this);
promptLabel.setTextAppearance(this, android.R.style.TextAppearance_DeviceDefault_Large);
promptLabel.setText(myTacorCursor.getString(myTacorCursor.getColumnIndex("PROMPT_"+String.valueOf(x))));
promptLabel.setId(1);
((RelativeLayout) myLayout).addView(promptLabel);
RelativeLayout.LayoutParams mLayoutParams1=(RelativeLayout.LayoutParams)promptLabel.getLayoutParams();
mLayoutParams1.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
if (i==1){
mLayoutParams1.addRule(RelativeLayout.BELOW,R.id.textView7);
Log.w("ID is:", String.valueOf(promptLabel.getId()));
} else{
mLayoutParams1.addRule(RelativeLayout.BELOW,promptLabel.getId());
Log.w("ID is:", String.valueOf(promptLabel.getId()));
}
i++;
}
}
I'm trying to display:
(textView)LABEL xx R.id.textview7
<-- here would be the inserted columns -->
(text view) prompt 1
(text view) prompt 2
(text view) prompt 3
... etc ...'

Setting ids dynamically is OK. Just some more attentiveness and your code works.
As far as you're in the for loop, it's better to increment index only in one place.
After you've changed the LayoutParams of the View you need to set it back: promptLabel.setLayoutParams(layoutParams)
Try this. It should work:
public class MainActivity extends Activity {
private static final int BASE_ID = 1;
private static final int ITEMS_COUNT = 13;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RelativeLayout rootLayout = (RelativeLayout) findViewById(R.id.root);
for (int index = BASE_ID; index < ITEMS_COUNT; index++) {
String prompt = "PROMPT_" + String.valueOf(index);
// if not empty draw a row
// insert new rows into layout
TextView promptLabel = new TextView(this);
promptLabel.setTextAppearance(this,
android.R.style.TextAppearance_DeviceDefault_Large);
promptLabel.setText(prompt);
promptLabel.setId(index);
rootLayout.addView(promptLabel);
RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) promptLabel
.getLayoutParams();
layoutParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
if (index == BASE_ID) {
layoutParams.addRule(RelativeLayout.BELOW, R.id.top);
Log.d("ID is:", String.valueOf(index));
} else {
layoutParams.addRule(RelativeLayout.BELOW, index - 1);
Log.d("ID is:", String.valueOf(index - 1));
}
promptLabel.setLayoutParams(layoutParams);
}
}
}

You don't need to construct the whole layout programatically. Define it in separate layout xml file and then use layout inflater to inflate it. After that add it where you want it.
I have never seen ids assigned programatically, but with my suggestion you can define them in the xml as usual.
PS: Here is a good example explaining how to use LayoutInflater.

Related

Android : How to get Dynamic EditText values

In my application I'am creating 10 EditText by dynamically. Now I want to give different value in run time and I want to add it to the list. I have assigned EditText object to the String variable like object.getText.toString(). But i cant get any value.I'am a beginner in android. Can anyone help me how to achieve this? Thanks in advance.
for(int i=0;i<=10;i++)
{
requirement = require.get(i);
RelativeLayout rl1 = new RelativeLayout(getActivity());
rl1.addView(req1);
req1estimate_value = new EditText(getActivity());
String value = req1estimate_value.getText().toString();
rl2.addView(req1estimate_value);
}
Try this. You should instantiate relative layout (rl1) at out of for loop, and should add child views with in that, so that all views could belongs to a parent layout. After that for accessing the values of all EditText you can use following:
String viewValue;
ViewGroup rootView = (ViewGroup) rl1;
int count = rootView.getChildCount();
for (int i = 0; i < count; i++) {
View view = rootView.getChildAt(i);
if (view instanceof EditText) {
viewValue = ((EditText) view).getText().toString();
Log.v("Value:: ", i + " " + viewValue);
} else if (view instanceof Spinner) {
viewValue = ((Spinner) view).getSelectedItem()
.toString();
Log.v("Value:: ", i + " " + viewValue);
}
}
Now after getting values you can put on a List or anywhere you want to use.

How to add dynamic layout in existing layout ( Android, JSON )

I have an app in which I am showing data from JSON. I am displaying data in a dynamic textview on the right and left side of the relative layout. Now I want to add this layout in an existing layout so that I can apply an OnClickListener on the textview. Right now I am getting data into a string and then setting that string into static textviews in the left and right side of the layout.
How would it be possible to generate textview dynamically on the basis of number of data I am getting from JSON ?
for (Region object : temp.phonelist.regionList)
{
if (object.getCCInfoShortDesc() != null || !(object.getCCInfoShortDesc().equals(null)))
{
Log.i("nullexception", "nullexception");
holder.tvDescription.setText(object.getCCInfoShortDesc());
holder.tvDescription.setVisibility(View.VISIBLE);
}else {
Log.i("nullexception1", "nullexception1");
holder.tvDescription.setVisibility(View.GONE);
}
leftContent += object.getCCInfoLeft() + ":" + "\n";
rightContent += object.getCCInfoRight() + "\n";
}
Log.i("lefftcontent", leftContent);
Log.i("rightcontent", rightContent);
if (leftContent != null) {
holder.tvData2.setText(leftContent);
holder.tvData2.setVisibility(View.VISIBLE);
}
if (rightContent != null) {
holder.tvData1.setText(rightContent);
holder.tvData1.setVisibility(View.VISIBLE);
}
You can do it in this way..
final int Count = < Number of TextViews>; // total number of textviews to add
final TextView[] TextViewsARR = new TextView[N]; // create an empty array;
for (int i = 0; i < Count; i++) {
// create a new textview
final TextView rowTextView = new TextView(this);
// set some properties of rowTextView or something
rowTextView.setText("This is row #" + i);
// add the textview to the linearlayout
myLinearLayout.addView(rowTextView);
// save a reference to the textview for later
TextViewsARR [i] = rowTextView;
}
I have a sample below that generates a checkbox dynamically, If you
observe i am generating the checkbox based on the cursor count.
You can adapt this saple to your needs
Instead of checkbox use a texview
Give any layout like linear, relative etc and generate views
dynamically
private CheckBox chkBoxMealType[] = null;
mCursor = db.rawQuery("SELECT meal_type_id,meal_type_name FROM meal_type_mas", null);
if(mCursor.moveToFirst()){
do{
if(chkBoxMealTypeCnt==0){
chkBoxMealType=new CheckBox[mCursor.getCount()];
}
//create a general view for checkbox
chkBoxMealType[chkBoxMealTypeCnt]= new CheckBox(getActivity());
//Create params for veg-checkbox
//Reason:: we don't need to worry about the data exist in cuisine_type_mas table
chkBoxMealType[chkBoxMealTypeCnt].setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
chkBoxMealType[chkBoxMealTypeCnt].setTextColor(getResources().getColor(R.color.searchGoldLight));
chkBoxMealType[chkBoxMealTypeCnt].setTextSize(TypedValue.COMPLEX_UNIT_SP,12);
chkBoxMealType[chkBoxMealTypeCnt].setTag(mCursor.getString(mCursor.getColumnIndexOrThrow(meal_type_mas.COLUMN_MEAL_TYPE_ID)));
chkBoxMealType[chkBoxMealTypeCnt].setText(WordUtils.capitalizeFully(mCursor.getString(mCursor.getColumnIndexOrThrow(meal_type_mas.COLUMN_MEAL_TYPE_NAME))));
mealTypeContainer.addView(chkBoxMealType[chkBoxMealTypeCnt]);
//since cursor count starts from 0 last count must be allowed
chkBoxMealTypeCnt++;
}while(mCursor.moveToNext());
Log.d("", "");
}
I have another sample..... Download this project(Click Here) and run in your editor
Snapshot::
Firstly you need to add a View in your layout ... Like you may try using LinearLayout or HorizontalLayout ... and then attach/add your dynamic textview to that layout.
Pragmatically you may try like this
packageButtons = new ArrayList<TextView>(); // Create your textview arraylist like this
for(int a = 0; a < your_text_view_from_json.size(); a++){
final TextView rowTextView;
rowTextView = new TextView(getApplicationContext());
rowTextView.setText(taxi_type_spin.get(a).taxi_type);
rowTextView.setTextSize(15);
rowTextView.setTextColor(getResources().getColor(R.color.white));
LinearLayout.LayoutParams lparam = new LinearLayout.LayoutParams(0,
LinearLayout.LayoutParams.WRAP_CONTENT, 1);
//rowTextView.setPadding(0, 0, 0, 0);
packageButtons.add(rowTextView);
rowTextView.setLayoutParams(lparam);
rowTextView.setId(a);
final int b = a;
// get value of clicked item over here ..
rowTextView.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Button btn = (Button)v;
String get_value = btn.getText().toString();
//Toast.makeText(getApplicationContext(), "Button name is : " + get_value + " AND ID IS : " + rowTextView.getId(), Toast.LENGTH_LONG).show();
if(taxi_type_spin.get(b).taxi_type.equalsIgnoreCase(Utils.Hourly_Package))
{
setTaxiType(rowTextView.getId(),true);
ll_spin.setVisibility(View.VISIBLE);
}
else
{
setTaxiType(rowTextView.getId(),false);
ll_spin.setVisibility(View.GONE);
}
setSelectedButtonColor(b);
}
});
// add the textview to the linearlayout
myLinearLayout.addView(rowTextView);
NOTE rowTextView .. this is your default view attached to your XML file
Hope it helps!
private void setLayout(LinearLayout llayout,
final ArrayList<String> items) {
for (int i = 0; i < items.size(); i++) {
LinearLayout row = null;
LayoutInflater li = getLayoutInflater();
row = (LinearLayout) li.inflate(R.layout.custom_item,
null);
ImageView image = (ImageView) row.findViewById(R.id.image);
llayout.addView(row);
}
}
I would suggest you to use ArrayList, because the class java.util.ArrayList provides resizable-array, which means that items can be added and removed from the list dynamically.
and get value from ArrayList something like this:
for(int i=0; i<arrayList.size(); i++)
{
textName.setText(object.getName());
}
How it is possible to genrate textview dynamically
on the basis of number of data i am getting from json.
You need to create TextView and add it to the parent layout each time you iterate on the forloop. So you will have textView for each of the element of the temp.phonelist.regionList
sample:
for (Region object : temp.phonelist.regionList)
{
TextView tx = new TextView(context); //creating a new instance if textview
//yourstuff goes here
tx.setText(text_you_want);
yourView.addView(tx); //this is to add the textView on each iteration
}
here is your solution do this way,Take one Layout(Linear or Relative) and add control dynamically....
LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
for (int i = 0; i < 4; i++)
{
TextView txtDemo = new TextView(getActivity());
txtDemo .setTextSize(16);
txtDemo .setLayoutParams(lp);
txtDemo .setId(i);
lp.setMargins(0, 10, 0, 0);
txtDemo .setPadding(20, 10, 10, 10);
txtDemo .setText("Text View"+ i);
linearlayout.addView(txtDemo );
}
}

How to dynamically add rows and detect and delete clicked?

I'm dynamically adding rows to the table. I have few textViews[] that I add to the row[] and then I add row[] to the table. That's ok, but then I want to detect click on textView[] and delete that row, also I want the numbers of the textViews below deleted ones to decrease.
example:
1 a a a //(I delete this row)
2 b b b
3 c c c
after deleting, I want to have this:
1 b b b
2 c c c
I have tried adding onClickListener to one textView[], but sometimes it deletes row[] and decreases number, sometimes don't.
Can someone write me some example to try out?
EDIT: Here's my code (I think it's all that's needed for this)
This is the code on my button for adding rows:
public TextView textViewKoeficijent[] = new TextView[50];
public TextView textViewBr[] = new TextView[50];
public TextView textViewObrisi[] = new TextView[50];
public TextView textViewTip[] = new TextView[50];
public TextView textViewPar[] = new TextView[50];
fkoeficijent = Double.valueOf(koeficijent);
koefIzracun = koefIzracun * fkoeficijent;
TextView textViewKoeficijentIzracun = (TextView) findViewById(R.id.textViewUkupniKoeficijentIzracun);
koefIzracun = Math.round(koefIzracun*100)/100.0d;
koefIzracunString = String.valueOf(koefIzracun);
textViewKoeficijentIzracun.setText(koefIzracunString);
final TableLayout PopisParova = (TableLayout) findViewById(R.id.TableLayout);
final TableRow noviPar[] = new TableRow[50];
LayoutParams paramsBroj = new LayoutParams(0, LayoutParams.WRAP_CONTENT, 1);
paramsBroj.setMargins(4, 0, 2, 4);
LayoutParams paramsPar = new LayoutParams(0, LayoutParams.WRAP_CONTENT, 2);
paramsPar.setMargins(2, 0, 2, 4);
LayoutParams paramsKoef = new LayoutParams(0, LayoutParams.WRAP_CONTENT, 2);
paramsKoef.setMargins(2, 0, 4, 4);
//onclicklistener:
OnClickListener onClickListener = new View.OnClickListener() {
#Override
public void onClick(View view) {
// TODO Auto-generated method stub
id = view.getId();
brpara --;
TextView textViewKoeficijentIzracun = (TextView) findViewById(R.id.textViewUkupniKoeficijentIzracun);
if(brpara==1){
textViewKoeficijentIzracun.setText("0");
koefIzracun = 1;
}
else{
koeficijent = textViewKoeficijent[id].getText().toString();
fkoeficijent = Double.valueOf(koeficijent);
koefIzracun = koefIzracun / fkoeficijent;
koefIzracun = Math.round(koefIzracun*100)/100.0d;
koefIzracunString = String.valueOf(koefIzracun);
textViewKoeficijentIzracun.setText(koefIzracunString);}
PopisParova.removeViewAt(id);
//PopisParova.removeView(noviPar[id]);
for(i=1; i<=brpara; i++){
if(i>id){
String bri = String.valueOf(i-1);
textViewBr[i].setText(bri);
textViewObrisi[i].setDrawingCacheBackgroundColor(i-1);
}
}
}};
{
textViewBr[brpara] = new TextView(MainActivity.this);
textViewBr[brpara].setLayoutParams(paramsBroj);
textViewBr[brpara].setGravity(Gravity.CENTER_HORIZONTAL);
textViewBr[brpara].setBackgroundColor(0xFFFFFFFF);
brojPara = String.valueOf(brpara);
textViewBr[brpara].setText(brojPara);
textViewBr[brpara].setId(brpara);
}
{
textViewPar[brpara] = new TextView(MainActivity.this);
textViewPar[brpara].setLayoutParams(paramsPar);
textViewPar[brpara].setGravity(Gravity.CENTER_HORIZONTAL);
textViewPar[brpara].setBackgroundColor(0xFFFFFFFF);
textViewPar[brpara].setText(par);
textViewPar[brpara].setId(brpara);
}
{
textViewTip[brpara] = new TextView(MainActivity.this);
textViewTip[brpara].setLayoutParams(paramsPar);
textViewTip[brpara].setGravity(Gravity.CENTER_HORIZONTAL);
textViewTip[brpara].setBackgroundColor(0xFFFFFFFF);
textViewTip[brpara].setText(tip);
textViewTip[brpara].setId(brpara);
}
{
textViewKoeficijent[brpara] = new TextView(MainActivity.this);
textViewKoeficijent[brpara].setLayoutParams(paramsPar);
textViewKoeficijent[brpara].setGravity(Gravity.CENTER_HORIZONTAL);
textViewKoeficijent[brpara].setBackgroundColor(0xFFFFFFFF);
textViewKoeficijent[brpara].setText(koeficijent);
textViewKoeficijent[brpara].setId(brpara);
}
{
textViewObrisi[brpara] = new TextView(MainActivity.this);
textViewObrisi[brpara].setLayoutParams(paramsKoef);
textViewObrisi[brpara].setGravity(Gravity.CENTER_HORIZONTAL);
textViewObrisi[brpara].setBackgroundColor(0xFFFFFFFF);
textViewObrisi[brpara].setText("X");
textViewObrisi[brpara].setId(brpara);
textViewObrisi[brpara].setClickable(true);
textViewObrisi[brpara].setOnClickListener(onClickListener);
}
noviPar[brpara] = new TableRow(MainActivity.this);
noviPar[brpara].addView(textViewBr[brpara]);
noviPar[brpara].addView(textViewPar[brpara]);
noviPar[brpara].addView(textViewTip[brpara]);
noviPar[brpara].addView(textViewKoeficijent[brpara]);
noviPar[brpara].addView(textViewObrisi[brpara]);
PopisParova.addView(noviPar[brpara]);
brpara++;
editTextPar.setText("");
editTextTip.setText("");
editTextKoeficijent.setText("");
EDIT [2]:
brpara is my counter so I know which is number of row which is being added. I have a max of 20 rows.
Also, my loop is working perfectly for deleting one row, but when I delete multiple rows at once, it only changes my row numbers for the first time and after that only deletes rows.
What are you doing is this:
Let's say that brpara = 3.
You click the view with id = 2.
You execute brbara --; So brbara is now 2.
You check if id != brpara they are NOT so no renumbering. Logical Problem!
Furthermore you have this loop:
for(i=id+1; i<=brpara; i++){
i=id+1;
String bri = String.valueOf(id);
textViewBr[i].setText(bri);
textViewObrisi[i].setId(id);}
You say that i must be id+1 (in our example 3) to < brpara (in our example 2) so 3 <= 2 it never executes, if however id and brpara allows loop execution you resetting the i inside the loop
i=id+1;
If for example the loop starting with i = id+1 let's say id=2 so it is now 3 and go inside the loop the i will be always 3 because you are resetting it inside the loop.
It is not clear from your code how are you using brpara but the loop for renumbering is wrong. So let's assume that brpara is ALWAYS the last index in the array then I suggest the following code:
#Override
public void onClick(View view) {
// TODO Auto-generated method stub
id = view.getId();
TextView textViewKoeficijentIzracun = (TextView) findViewById(R.id.textViewUkupniKoeficijentIzracun);
if(brpara==1){
textViewKoeficijentIzracun.setText("0");
koefIzracun = 1;
}
else{
koeficijent = textViewKoeficijent[id].getText().toString();
fkoeficijent = Double.valueOf(koeficijent);
koefIzracun = koefIzracun / fkoeficijent;
koefIzracun = Math.round(koefIzracun*100)/100.0d;
koefIzracunString = String.valueOf(koefIzracun);
textViewKoeficijentIzracun.setText(koefIzracunString);}
//FIRST RENUMBER ALL VIEWS FROM id+1 to brpara
if(id!=brpara){
for(i=id+1; i<=brpara; i++){
String bri = String.valueOf(i - 1); //<--HERE MAYBE MUST BE i-1 NOT id...
textViewBr[i].setText(bri);
textViewObrisi[i].setId(id);} //THIS DOESN'T FEEL RIGHT MAYBE i INSTEAD OF id? OR i - 1?
}
//AND FINALY REMOVE VIEW AND DECREASE brpara...
PopisParova.removeViewAt(id);
brpara --;
}
My suggestion assumes that brpara is always the last index and you are renumbering from the clicked view + 1 to the end. However there is a more elegant solution which is to create a function that renumbers the whole array from top to bottom regardless the view clicked and call it whenever a view gets added or removed. That way you will not have to manage brpara at all but this depends on what exactly you are trying to achieve.
Based on your Edits
Try this:
#Override
public void onClick(View view) {
// TODO Auto-generated method stub
id = view.getId();
TextView textViewKoeficijentIzracun = (TextView) findViewById(R.id.textViewUkupniKoeficijentIzracun);
if((brpara - 1)==1){
textViewKoeficijentIzracun.setText("0");
koefIzracun = 1;
} else {
koeficijent = textViewKoeficijent[id].getText().toString();
fkoeficijent = Double.valueOf(koeficijent);
koefIzracun = koefIzracun / fkoeficijent;
koefIzracun = Math.round(koefIzracun*100)/100.0d;
koefIzracunString = String.valueOf(koefIzracun);
textViewKoeficijentIzracun.setText(koefIzracunString);
PopisParova.removeViewAt(id);
brpara --;
for(i=1; i<=brpara; i++){
String bri = String.valueOf(i);
textViewBr[i].setText(bri);
textViewObrisi[i].setDrawingCacheBackgroundColor(i);
}
}
}
Since brpara is a counter you should decrease it only when you are actually remove the view. You may have to change the
if((brpara - 1)==1){
with
if(brpara==1){
based on your needs. But now the loop seems to be OK.
Hope this helps...
The only possible solution is to replace deleted rows, and their data, with rows following, and their data and delete last row. So it looks like the deleted row is really deleted.
row[x] = row[x+1] // want to delete this
row[x+1] = row[x+2]
//... and like that until the last row
row[last] // delete this row

android TextView arrays

I am making a word game in which each a user has multiple guesses, each one made up of multiple TextViews. So far my code reads:
TextView[] guess1 = new TextView[numTextViews];
guess1[0] = (TextView) findViewById(R.id.Guess1_1);
guess1[1] = (TextView) findViewById(R.id.Guess1_2);
guess1[2] = (TextView) findViewById(R.id.Guess1_3);
guess1[3] = (TextView) findViewById(R.id.Guess1_4);
guess1[4] = (TextView) findViewById(R.id.Guess1_5);
with the xml looking like:
<TextView
android:id="#+id/Guess1_1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1"
android:gravity="center"
android:text="#string/guessChar" />...
which repeats with android:id= changing.
I am going to be repeating myself if I type out TextView[] guess2 and all its elements.
What is a better way to go about this?
Would it be better to create all the TextViews programmatically as they are so similar?
This is how you can iterate through your views without the use of ids in repetitive code:
LinearLayout ll = (LinearLayout) findViewById(R.id.layout_containing_textviews);
for (int i = 0; i < ll.getChildCount(); i++) {
if (ll.getChildAt(i).getClass() == TextView.class) {
guess1[i] = (TextView)ll.getChildAt(i);
}
}
Make sure to tweak this in case you have non-TextView views since the i index will not be consecutive in that case. You can use another counter just for the TextViews.
Now if your layout has only TextViews, you don't even need an array. You can use that layout as a container/array the way it's used in the snipped above.
Do you know what is the amount of guesses for each text view?
I would suggest you to use reflection
Class clazz = R.id.class; // get the R class
Field f = clazz.getField("Guess1_" + "1");
int id = f.getInt(null); // pass in null, since field is a static field.
TextView currcell = (TextView) findViewById(id);
in this case it will bring the Guess1_1
for you case:
for (int i =0; i < numTextViews; i++)
{
Class clazz = R.id.class;
Field f = clazz.getField("Guess1_" + Integer.toString(i+1));
int id = f.getInt(null);
guess[i] = (TextView)findViewById(id);
}
but this only bring you the first array of Guess1 you need to convert it to generic code..
so some problems can be occur.. so read it with the xml as you have right now would be the easiest way..
Edit:
If the all textView have the same attributes you can also create it programmatically
LinearLayout view = new LinearLayout(this); // create new linear layout
view.setOrientation(LinearLayout.HORIZONTAL); // optional.. so the
// view will be horizontaly
view.setLayoutParams(new LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT)); // set the layout
// height and width
for (int i = 0; i < numOf ; i ++)
{
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
guess[i] = new TextView();
guess[i].setLayoutParams(lp);
guess[i].setID(i+1);
}
You could either create the textViews programmatically (and use inflate if you wish to use some xml too), or you could use the getIdentifier method , for example:
private static final String ID_FORMAT="Guess1_%d";
...
for(int i=0;i<10;++i)
{
String id=String.format(FORMAT,i);
TextView tv = (TextView) findViewById(getResources().getIdentifier(id, "id", getPackageName()));
//...
}
same goes if you wish to do a loop within a loop.
If the layout has a lot of views, I would suggest using an adapterView (listView,gridView,...) instead, and avoid creation of so many views (either programmatically or by xml).

Android Table Layout with 5x5 dimension

I'm still new in android programming, what I'm trying to do is, I want to create 5x5 dimension TableLayout. I know this can be done by using GridView BaseAdapter suing Inflate service. But for this one i try to apply using table layout. Below is the code. I create new instance of TableLayout, and new instance of Table row. On each table row, I created instance of 5 TextView. But once I open in emulator or in my phone, there is no TableRow created, it just empty blank Table Layout. Also there is no exception was thrown.
GridView navIcon = (GridView) findViewById(R.id.content);
navIcon.setAdapter(new ImageAdapter(this));
navIcon.setOnItemClickListener(new OnItemClickListener(){
#Override
public void onItemClick(AdapterView<?> parent, View v, int position,long id) {
// TODO Auto-generated method stub
if (position==0){
try{
TableLayout calgrid = (TableLayout) findViewById(R.id.gridtable);
Context ctxt = v.getContext();
TextView[] tView = new TextView[25];
calgrid = new TableLayout(ctxt);
int dip = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,(float) 1, getResources().getDisplayMetrics());
int counter=1;
TableRow[] tr = new TableRow[5];
for(int j=0;j<5;j++){
tr[j] = new TableRow(ctxt);
for(int i=0;i<5;i++){
tView[i] = new TextView(ctxt);
tView[i].setText(String.valueOf(counter));
tView[i].setTextSize(15);
counter+=1;
tView[i].setWidth(50 * dip);
tView[i].setPadding(20*dip, 0, 0, 0);
tView[i].setTextColor(Color.rgb( 100, 200, 200));
Toast.makeText(getApplicationContext(), "tView["+i+"] value " + String.valueOf(tView[i].getText()), Toast.LENGTH_SHORT).show();
tr[j].addView(tView[i], 50, 50);
}
calgrid.addView(tr[j]);
}
}catch(Exception e){
Log.e("MainActivity", "Error in activity", e);
Toast.makeText(getApplicationContext(),e.getClass().getName() + " " + e.getMessage(),Toast.LENGTH_LONG).show();
}
}
}
});
First of all, it is a mistake to do calgrid = (TableLayout) findViewById(R.id.gridtable); and then calgrid = new TableLayout(ctxt);, which basically says find this view now assign this variable to something completely different. Remove the second statement and it will load the table from xml which is what you want.
Second, I think it would be a good idea to simplify things for yourself because there is a lot going on here. Instead of doing all this work inside an onClick listener, do it in the onCreate method itself. Also, you seem to be using the Context from the GridView, which seems odd. Perhaps if you posted your xml layout file it could help explain what you are trying to do?
There is also a problem with indices in the array of TextViews, as tView[i] will only assign items up to 5 but the array contains 25 items. Try using tView[(j*5)+i] instead. I don't think this is causing your problems but just make sure you are assigning your items correctly.
Here is an example of how to do something along the lines of what you want
setContentView(R.layout.grid);
TableLayout tl = (TableLayout) findViewById(R.id.gridtable);
for (int j = 0; j < 5; j++) {
TableRow tr = new TableRow(this);
tr.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
for (int i = 0; i < 5; i++) {
TextView tView = new TextView(this);
tView.setText("TEXT" + String.valueOf((j * 5) + i + 1));
tView.setLayoutParams(new LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
tr.addView(tView);
}
tl.addView(tr, new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
}
and grid.xml
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/gridtable"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</TableLayout>
Once you get it working in the activity itself you can try to put it inside a listener attached to a GridView. Hope this helps!

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