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android - adding button dynamically when each button width is different , automicatically flow to next row when width is full

I need to create buttons dynamically to a linear layout. The width of each button will be wrap_content. Once the whole row is full, the button should be created in the next row.
I have seen other answers in stackOverflow where this is done, but in those cases the no of buttons in a row is constant. In my case it is dynamic, because the width of each button is dynamic based on text width.
It is similar to how tags are added to a question in this site.
e.g. the answers in one of questions was:
LinearLayout layout = (LinearLayout) findViewById(R.id.linear_layout_tags);
layout.setOrientation(LinearLayout.VERTICAL); //Can also be done in xml by android:orientation="vertical"
for (int i = 0; i < 3; i++) {
LinearLayout row = new LinearLayout(this);
row.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
for (int j = 0; j < 4; j++) {
Button btnTag = new Button(this);
btnTag.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
btnTag.setText("Button " + (j + 1 + (i * 4));
btnTag.setId(j + 1 + (i * 4));
row.addView(btnTag);
}
layout.addView(row);
}
But here the no of buttons in a row is constant. In my case , this will be different because the width of each button is different.

You need a FlowLayout, which is an Extended linear layout that wrap its content when there is no place in the current line.
Check this out: https://github.com/ApmeM/android-flowlayout

Have you tried using GridLayout ?
linearLayoutParent = findViewById(R.id.ll_buttons_parent); // container layout or parent layout - orientation vertical
LayoutInflater inflater = getLayoutInflater();
View view = inflater.inflate(R.layout.button_horizontal_layout, linearLayoutParent, false);
LinearLayout linearLayoutButton = view.findViewById(R.id.ll_button_horizontal);
int rows = 3;
for (int r = 0; r < rows; r++) {
GridLayout gridLayout = new GridLayout(this);
gridLayout.setColumnCount(2);
for (int i = 0; i < 4; i++) {
Button optionButton = new Button(this);
optionButton.setGravity(Gravity.CENTER);
optionButton.setText(String.valueOf(i + 1));
gridLayout.addView(optionButton); // adding buttons to grid layout
}
linearLayoutButton.addView(gridLayout); // adding grid layout to vertical linear layout row by row
}
linearLayoutParent.addView(linearLayoutButton); //adding linear layouts to container layout
Container : ll_buttons_parent
<LinearLayout
android:id="#+id/ll_buttons_parent"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintTop_toTopOf="parent"/>
button_horizontal_layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/ll_button_horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="#F8CCCC"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
app:layout_constraintTop_toTopOf="parent" />

Arrange RelativeLayout below another dynamically

I'm trying to dynamically build relative layouts consisting of an image and a textview at the moment. I have tried building a loop to place the next relative layout below the former one, but I can't really make it work. The end result should be something like this, but I guess that if i figure out how to align below the former one, I can also figure out how to place it right_of the former relative layout.
Any suggestions? This is my code so far:
RelativeLayout container1 = (RelativeLayout) rootView
.findViewById(R.id.main_layout);
for (int i = 0; i < pictures.size(); i++) {
RelativeLayout tile = new RelativeLayout(getActivity());
tile.setId(i);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
params.height = height / 3;
params.width = width / 2;
tile.setLayoutParams(params);
ImageButton ibGood = new ImageButton(getActivity());
ibGood.setId(1);
ibGood.setImageResource(pictures.get(0));
ibGood.setAdjustViewBounds(true);
ibGood.setMaxHeight(height / 3 / 5 * 4);
ibGood.setMaxWidth(width);
ibGood.setScaleType(ScaleType.CENTER_CROP);
ibGood.setPadding(5, 5, 5, 5);
tile.addView(ibGood);
RelativeLayout.LayoutParams tvPriceParam = new RelativeLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
tvPriceParam.addRule(RelativeLayout.BELOW, ibGood.getId());
tvPriceParam.addRule(RelativeLayout.ALIGN_LEFT, ibGood.getId());
TextView tvPrice = new TextView(getActivity());
tvPrice.setId(2);
tvPrice.setHeight(tile.getHeight() / 5);
tvPrice.setWidth(tile.getWidth() / 5 * 2);
tvPrice.setPadding(5, 0, 0, 5);
tvPrice.setText(Integer.toString(price.get(0)));
tile.addView(tvPrice, tvPriceParam);
if (counter == 0) {
container1.addView(tile);
} else if (counter % 2 == 0) {
RelativeLayout.LayoutParams lay = new RelativeLayout.LayoutParams(
LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
lay.addRule(RelativeLayout.BELOW, -1);
tile.setLayoutParams(lay);
container1.addView(tile);
}
counter += 1;
}

you can make it with the custom gridview !! why you are doing this with the relative layout ?
here is the link which you can use to achieve what do you want..
http://www.learn-android-easily.com/2013/09/android-custom-gridview-example.html
http://www.caveofprogramming.com/uncategorized/custom-gridview-with-imageview-and-textview-in-android/
please visit 3 links are there you will get that you want .. with relative layout ..
Thanks,
Madhav

Don't understand extra padding when using FrameLayout inside TableLayout

I'm trying to learn how to write Android programs, and I'm having trouble figuring out how padding works, in particular in a FrameLayout within a TableLayout.
private void fillTable(int nrows, int ncols) {
final int CENTER = 0x11; // used for "gravity" parameters
TableLayout table = (TableLayout) this.findViewById(R.id.tablelayout);
int counter = 1;
TextView text;
for (int i = 0; i < nrows; i++) {
TableRow row = new TableRow(this);
table.addView(row);
for (int j = 0; j < ncols; j++) {
View cell;
text = new TextView(this);
text.setTextColor(Color.BLUE);
text.setText(Integer.toString(counter++));
text.setGravity(CENTER);
if (i == 2 && j == 2) {
FrameLayout frame = new FrameLayout(this);
text.setLayoutParams(new FrameLayout.LayoutParams(90, 45, CENTER));
frame.setPadding(0, 0, 0, 0);
frame.addView(text);
cell = frame;
} else {
cell = text;
}
cell.setBackgroundColor((i + j) % 2 == 0 ? Color.YELLOW : Color.WHITE);
row.addView(cell);
cell.setLayoutParams(new TableRow.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, 1F/ncols));
}
row.setLayoutParams(new TableLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, 1F/nrows));
}
}
tablelayout just looks like this:
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/tablelayout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</TableLayout>
I'm calling this with nrows=12 and ncols=5. I'm running on an emulator whose width is 720 pixels. If I change if (i==2&&j==2) to if (false), so that only an array of TextView is displayed, the columns are even, as I expect. However, with the code as written, the middle column is wider than the others.
I've also tried this adding android:stretchColumns="*" to the tablelayout definition and removing the weight parameter from cell.setLayoutParams, and the results are the same.
Assuming I have a reason to want to specify pixels for text.setLayoutParams (because of what I plan to do later), how would I get the column widths to be the same? Since 90*5 is well under 720, I don't understand why, or where, the extra width is being added.

Whenever you are dealing with weights, you must let the option take care of the remaining space. In this case width. Just set the width of each element to 0:
cell.setLayoutParams(new TableRow.LayoutParams(0, LayoutParams.MATCH_PARENT, 1F/ncols));

Add Buttons to Relative Layout Dynamically or Extended Linear Layout android

I want to add buttons to relative layout dynamically as per button and screen width as shown in image. Number of buttons is not fixed and width of button depends on the text which is set to the button.
I tried to achieve this using below code but that to not working fine as per my requirement.
Can anyone please help me ? Please help me through this.
RelativeLayout layout = (RelativeLayout) findViewById(R.id.genre_layout);
for(int i=0; i < genreList.size(); i++){
Button btn = new Button(MovieDetailsActivity.this);
btn.setText(genreList.get(i).getGenreName());
btn.setPadding(15, 5, 15, 5);
btn.setBackgroundColor(Color.parseColor("#FFFFFF"));
btn.setBackgroundColor(Color.parseColor("#80333333"));
LayoutParams param = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
param.setMargins(5, 5, 5, 5);
if (i != 0){
int prevId = genreList.get(i).getGenreId();
param.addRule(RelativeLayout.RIGHT_OF, prevId);
}
btn.setLayoutParams(param);
btn.setId(genreList.get(i).getGenreId());
layout.addView(btn);
}

Try this
Display display=getWindowManager().getDefaultDisplay();
int width=display.getWidth();
btn.setWidth(width);
or if you have two buttons, do
Display display=getWindowManager().getDefaultDisplay();
int width=display.getWidth();
btn1.setWidth(width/2);
btn2.seTwidth(width/2);
Update
LinearLayout.LayoutParams paramz = new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT,
0dp, 1.0f);
then btn.setLayoutParams(paramz);

I have the code to add buttons dynamically to linear layout. Just check out whether it helps you https://docs.google.com/document/d/1QA1tAIe601fZT2Dlp1A0qDuLD0U4IqKL3f_Crx1rtkE/edit?usp=sharing

Try this for adding dynamic buttons in relativelayout
RelativeLayout layout = (RelativeLayout)findViewById(R.id.slidingDrawerContent);
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT );
for (int i=0; i<4; i++) {
Button btn = new Button(this);
btn.setId(i);
btn.setText("some_text");
// lp.addRule(RelativeLayout.RIGHT_OF, <Id>);
layout.addView(tv2, lp);
}

I would like to suggest use LinearLayout as you asked in your question and give a Weight.
LinearLayout

I Solved my problem by using FlowLayout.
Sample code and references are available here
Its simple to use. Thank you all for help.

issue with clear content in RelativeLayout

I am facing one issue for updating TextView content in RelativeLayout. When I update in the second time, I need to clear the previous text from RelativeLayout.
I have one RelativeLayout in my app activity_calendar.xml
<RelativeLayout
android:id="#+id/rel_container"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentRight="true"
android:layout_alignTop="#+id/linearLayout1"
android:layout_toRightOf="#+id/linearLayout1">
</RelativeLayout>
This is the Main Code :
public void listall () {
RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.rel_container);
int prevTextViewId = 0;
for (int i = 0; i < titleCalendar.length; i++) {
final TextView textView = new TextView(this);
textView.setText(titleCalendar[i]);
cnvrttime = hourCalendar[i] - 3;
addcnvrtTime = 60*cnvrttime;
curTextViewId = prevTextViewId + 1;
textView.setId(curTextViewId);
final RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT,RelativeLayout.LayoutParams.WRAP_CONTENT);
params.addRule(RelativeLayout.BELOW, addcnvrtTime);
params.setMargins(0, convertDPtoInt((float)addcnvrtTime), 0, 0);
textView.setLayoutParams(params);
prevTextViewId = curTextViewId;
relativeLayout.addView(textView, params);
}

You need to give the TextView an id so you can find it later:
textView.setId(1234);
Then later:
TextView textView = findViewById(1234);
textView.setText("New Text");

If there aren't any child Views inside the relative layout that you want to keep, call relativeLayout.removeAllViews() before your for loop. Otherwise, use removeView(View) or removeViewAt(int) to remove the ones you don't want.