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Android add multiple Textviews programmatically to Layout line break

I need to add TextViews to a Layout (RelativeLayout or LinearLayout I don't care) programatically.
I want something like this:
After the textview 4 there is no more space on the right side so the next TextView will be placed in a new Line bellow.
This is what I have done:
Create a LinearLayout in the xml file:
<LinearLayout
android:id="#+id/my_linear_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
</LinearLayout>
In my code, I loop over a list of Objects and add a new TextView for each objekt:
LinearLayout myLinearLayout = (LinearLayout) itemView.findViewById(R.id.my_linear_layout);
for(MyObject object : myObjectList) {
final LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
params.setMargins(20, 0, 20, 0); // llp.setMargins(left, top, right, bottom);
final TextView textView = new TextView(context);
textView.setText(object.getName());
textView.setLayoutParams(params);
myLinearLayout.addView(textView, params);
}
But this is the result I get:
I have thought adding LinearLayouts vertically instead of TextViews, but still my problem is that I don't know when I need to add the next the next one, I mean, when there is no more space on the right side.
I have also tried it with TableLayout but still the same problem, I don't know when I have to add the next row.
Any ideas? Maybe there is a View that already solves that problem and I don't know...

Margin in container which apply it all children in android

Suppose I have a container like LinearLayout and it has 10 Element(TextView,editText,..etc), so I want to give top margin on each element inside linear layout. But I don't want to give margin individual each element, I want give top Margin to container ( LinearLayout) which apply to its all element . is it possible in android?

LinearLayout layout = yourLayout;
for (int i = 0; i < layout.getChildCount(); i++) {
View view = layout.getChildAt(i);
LayoutParams layoutParams = (LayoutParams) view.getLayoutParams();
layoutParams.setMargins(0, 10, 0, 0);
view.setLayoutParams(layoutParams);
}

May be you can use paddingTop in LinearLayout but I m not sure.
Try This in your XML file
android:paddingTop="10dp"

Late answer but...
For vertical LinearLayout and layout_marginTop you only need to set it to the first children.
For horizontal LinearLayout and layout_marginTop (or any property that is relative to the parent and not a sibling element), you need an additional layout as child with the layout_marginTop value, another LinearLayout or ConstraintLayout for example.

Create buttons side by side dynamically

I have the following method which I call a few times to create a list of buttons. It works well and creates the buttons.
public void CreateButton(int i) {
LinearLayout btnLayout = (LinearLayout)findViewById(R.id.btnLayout);
Button btn = new Button(this);
btn.setId(i);
btn.setText(String.valueOf(i+1));
btnLayout.addView(btn);
}
But each created button is fitting the screen in width, and I would want it to stay side by side, two buttons per row. I managed to set the button to half the screen size using this:
int displaywidth= getResources().getDisplayMetrics().widthPixels;
btn.setLayoutParams(new LayoutParams((int)(displaywidth/2), LayoutParams.WRAP_CONTENT));
It makes the button's width to be half the screen's size, but I can't figure out how to place them side by side. Any help is appreciated.

Change your orientation in your LinearLayout to horizontal.
<LinearLayout
...
android:orientation="horizontal"
... >
...
</LinearLayout>
If you only have a single LinearLayout that is to hold multiple side-by-side buttons you can make horizontal LinearLayouts to hold your button pairs and either nest them in the main veritical layout or utilize another layout, for example RelativeLayout, to get the desired results.

Try using weight property of LinearLayout. If in each row you want only two buttons then give
android:weightSum="1"
to LinearLayout and
android:layout_weight="0.5"
to each button or you can set weight dynamically in your code by
LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT, xf);
where x represents the float value of layout weight of your button.
for more details about layout weight http://developer.android.com/guide/topics/ui/layout/linear.html

One way to solve the problem is by using their weight and width. Make sure the Linear Layout has a horizontal orientation. Then, use Layout_params to set their width to "Wrap_Content" and their weight to "1". Then both will automatically take up the same amount of space.

android adding views dynamically

I am adding views dynamically in a linear layout as follows:
xml:
<LinearLayout
android:id="#+id/part1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:gravity="right"
android:orientation="horizontal" >
</LinearLayout>
java:
View linearLayout = findViewById(R.id.part1);
((LinearLayout) linearLayout).removeAllViews();
for (int i = 0; i < 15; i ++){
TextView tv = new TextView(this);
tv.setText(String.valueOf(i));
LinearLayout.LayoutParams lay = new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
tv.setLayoutParams(lay);
tv.setBackgroundResource(R.drawable.msg);
tv.setId(i);
((LinearLayout) linearLayout).addView(tv);
}
Now i have two questions:
1) the text views are added horizontally correctly but if not fitting screensize, some of them won't appear, how to force it to continue adding in a new line once the horizontal space is full ?
2) textviews are added from left to right, how to add them from right to left ?
thanks

You need to understand how ViewGroups work, in this case, LinearLayout will add items horizontally or vertically without making position calculations for you unless you explicitly specify (jumping to next line is not one of them...), think of it as an item holder that will show items only on the space you specify for it (thats why some of the elements disappear...), by default the way LinearLayout arrange items is from left to right or up to down, if this do not fit your needs, you could go for any of the ViewGroup options android has, the most important might be:
RelativeLayout
FrameLayout
TableLayout
AbsoluteLayout(not recommended)
If you need some sort of Free Draw on the screen, you can always go for a View object, override onDraw, and play with the canvas of that object...
Regards!

Alignment in android Linear Layout

I am using linear layout with 2 textviews, 4 buttons, 1 seekbar,1 image view. If I am place those textviews,buttons, etc. in a linear layout the alignment is fine in android phone. While I am running the same code in android tablet, alignment is not proper. Why this alignment is not proper in tablet.? I have created the textviews,buttons etc by java code. Even I am specifying the two text views horizontally by settings the left margin of the second text view by devicewidth/2 having the difference in android phone and tablet. I need to align like the below.
TextView1 TextView2
Button1 Button2 Button3 Button4 SeekBar ImageView
Here is my code.
LinearLayout.LayoutParams textViewParams1 = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
textViewLayout.setOrientation(LinearLayout.HORIZONTAL);
TextView TextView1=new TextView(this);
TextView1.setText("Text1");
textViewParams1.gravity=Gravity.CENTER;
textViewParams1.setMargins(60, 20, 40, 10);
textViewLayout.addView(chooseColorTextView, textViewParams1);
LinearLayout.LayoutParams textViewParams2 = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
TextView TextView2=new TextView(this);
TextView2.setText("Text2");
int width=getWindowManager().getDefaultDisplay().getWidth();
textViewParams2.gravity=Gravity.CENTER;
textViewParams2.setMargins((width/2), 20, 40, 10);
textViewLayout.addView(strokeWidthTextView, textViewParams2);
parentlinearLayout.addView(textViewLayout, textViewLayoutParams);
In the next linear layout, I have added the 4 buttons,seekbar and image view. But facing problems in alignment.

I advise to create complex layout that must be rendered on different screen sizes in XML rather than programmatically, so you can have two different main.xml in res/layout and in res/layout-large and the system would pick up the correct one depending on screen size.

Use layout_weight and weightSum in XML:
<LinearLayout android:weightSum="1" android:layout_width="match_parent" android:layout_height="wrap_content">
<!-- First column -->
<LinearLayout android:layout_weight=".5" android:layout_width="0dp" android:layout_height="wrap_content"> ... </LinearLayout>
<!-- Second column -->
<LinearLayout android:layout_weight=".5" android:layout_width="0dp" android:layout_height="wrap_content"> ... </LinearLayout>
</LinearLayout>
This will produce a dynamically resizing 2 column layout. If you want the divide shorter or longer, change .5 to .3 and .7 for a 30/70% split etc.

Please read more about wrap_content and other android controls. Also read about dpi of tablets. Due to resolution appearance changes.

Why don't you use a TableLayout ? its the one you need to manage cells alignement:
All that you need is in the span attribute to make cells use multiple columns.
TableLayout myLayout = new TableLayout(myContext);
TableRow row1 = new TableRow(myContext);
TableRow.LayoutParams layouparams1 = new TableRow.LayoutParams(TableRow.LayoutParams.FILL_PARENT,TableRow.LayoutParams.WRAP_CONTENT);
layouparams1.span = 4;
row1.setLayoutParams = layouparams1 ;
TableRow.LayoutParams layouparams2 = new TableRow.LayoutParams(TableRow.LayoutParams.FILL_PARENT,TableRow.LayoutParams.WRAP_CONTENT);
layouparams2.span = 2;
TableRow row2 = new TableRow(myContext);
row2.setLayoutParams = layouparams2 ;
//then create and add your childs to each row :
...
row1.addView(text1);
row1.addView(text1);
row1.addView(button1);
row1.addView(button2);
row1.addView(button3);
row1.addView(button4);
row1.addView(seekbar);
row1.addView(imageView);
myLayout.addView(row1);
myLayout.addView(row2);
also consider adding layout_weight on children to manage the space they left to each other.