Develop Reference

How to make two buttons on the same row in eclipse programmatically?

LinearLayout table = (LinearLayout)findViewById(R.id.linearlayout);
btnControl = new Button(this);
btnControl.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
btnControl.setPadding(0,40,0,40);//x,y,w,h
btnControl.setBackgroundColor(Color.parseColor("#1C344E"));
btnControl.setTextColor(Color.WHITE);
setMargins(btnControl, 50, 50, 50, 50);
btnLogs = new Button(this);
btnLogs.setLayoutParams(new LayoutParams(380, LayoutParams.WRAP_CONTENT));
btnLogs.setPadding(0,40,0,40);//x,y,w,h
btnLogs.setBackgroundColor(Color.parseColor("#1C344E"));
btnLogs.setTextColor(Color.WHITE);
setMargins(btnLogs, 50, 50, 50, 50);
btnLogs.setId(5);
btnLogs.setOnClickListener(this);
btnTermLogs = new Button(this);
btnTermLogs.setLayoutParams(new LayoutParams(380, LayoutParams.WRAP_CONTENT));
btnTermLogs.setPadding(0,40,0,40);//x,y,w,h
btnTermLogs.setBackgroundColor(Color.parseColor("#CC6675"));
btnTermLogs.setTextColor(Color.WHITE);
setMargins(btnLogs, 50, 50, 50, 50);
btnTermLogs.setId(6);
btnTermLogs.setOnClickListener(this);
btnLogout = new Button(this);
btnLogout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
btnLogout.setPadding(0,40,0,40);//x,y,w,h
btnLogout.setBackgroundColor(Color.parseColor("#CC6675"));
btnLogout.setTextColor(Color.WHITE);
table.addView(btnLogs);
table.addView(btnTermLogs);
I want the two buttons to be aligned together horizontally. However it just align themselves vertically which i dont want.
My buttons look like this:
what i want is to look like this:

Try this below function. It will help
public void addButtons(){
LinearLayout table = (LinearLayout)findViewById(R.id.linearlayout);
LinearLayout linearLayout1 = new LinearLayout(this);
linearLayout1.setOrientation(LinearLayout.VERTICAL);
LinearLayout.LayoutParams LayoutParamsview = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
Button button1 = new Button(this);
button1.setText("Btn 1");
button1.setLayoutParams(LayoutParamsview);
linearLayout1.addView(button1);
table.addView(linearLayout1);
//
LinearLayout linearLayout2 = new LinearLayout(this);
linearLayout2.setOrientation(LinearLayout.HORIZONTAL);
Button button2 = new Button(this);
button2.setText("Btn 2");
button2.setLayoutParams(LayoutParamsview);
Button button3 = new Button(this);
button3.setText("Btn 3");
button3.setLayoutParams(LayoutParamsview);
linearLayout2.addView(button2);
linearLayout2.addView(button3);
table.addView(linearLayout2);
//
LinearLayout linearLayout3 = new LinearLayout(this);
linearLayout3.setOrientation(LinearLayout.VERTICAL);
Button button4 = new Button(this);
button4.setText("Btn 4");
button4.setLayoutParams(LayoutParamsview);
linearLayout3.addView(button4);
table.addView(linearLayout3);
}

Horizontal linear layout supports left to right widgets approach, When
app developer selects horizontal orientation in linear layout then it
will automatically start adding components and widgets to left to
right side after adding them. So here is the complete step by step
tutorial for Creating horizontal linearlayout programmatically
android.
Write this code
//Creating LinearLayout.
LinearLayout Horizontallinearlayout = new LinearLayout(this);
//Setting up LinearLayout Orientation
Horizontallinearlayout.setOrientation(LinearLayout.HORIZONTAL);
LayoutParams Horizontallinearlayoutlayoutparams = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
setContentView(Horizontallinearlayout, Horizontallinearlayoutlayoutparams);
LayoutParams LayoutParamsview = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
//Creating textview .
Button button1 = new Button(this);
Button button2 = new Button(this);
//Adding text to TextView.
button1.setText("First Button");
button2.setText("Second Button");
button1.setLayoutParams(LayoutParamsview);
button2.setLayoutParams(LayoutParamsview);
//Adding textview to linear layout using Add View function.
Horizontallinearlayout.addView(button1);
Horizontallinearlayout.addView(button2);
Hope this helps you

You should use setLayoutParams
Add setOrientation(LinearLayout.HORIZONTAL);
Set the layout parameters associated with this view. These supply
parameters to the parent of this view specifying how it should be
arranged. There are many subclasses of ViewGroup.LayoutParams, and
these correspond to the different subclasses of ViewGroup that are
responsible for arranging their children.
Code Structure
LinearLayout table = (LinearLayout)findViewById(R.id.linearlayout);
table.setOrientation(LinearLayout.HORIZONTAL);
Button Btn1 = new Button(Activity.this);
Btn1.setText("Button 1");
LinearLayout.LayoutParams childParam = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT);
childParam.weight = 0.5f;
Btn1.setLayoutParams(childParam);
Button Btn2 = new Button(Activity.this);
Btn2.setText("Button 2");
LinearLayout.LayoutParams childParam2 = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
childParam2.weight = 0.5f;
Btn2.setLayoutParams(childParam2);
table.addView(Btn1);
table.addView(Btn2);
Respected OP

You can create another XML file, that contains a horizontal LinearLayout, then inflate it and insert the two buttons into it, and then add the whole horizontal LinearLayout to the vertical LinearLayout:
Create an XML file e.g. horizontal_layout.xml:
<LinearLayout
android:id="#+id/horizontal_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
// You will insert the buttons programmatically.
</LinearLayout>
In your Activity use this method to inflate the Layout:
LinearLayout verticalLinearLayout = rootView.findViewById(R.id.vertical_linear_layout);
// Add the first vertical Button regularly.
Button firstVerticalButton = new Button(Activity.this);
firstVerticalButton.setText("Vertical");
verticalLinearLayout.addView(firstVerticalButton);
// Inflate the horizontal LinearLayout and add the two horizontal buttons.
LinearLayout horizontalLinearLayout = getLayoutInflater().inflate(R.layout.horizontal_layout,
linearLayout, false);
Button horizontalOne = new Button(Activity.this);
horizontalOne.setText("Horizontal");
LinearLayout.LayoutParams childParam = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.WRAP_CONTENT);
childParam1.weight = 0.5f;
horizontalOne.setLayoutParams(childParam);
Button horizontalTwo = new Button(Activity.this);
horizontalTwo.setText("Horizontal");
LinearLayout.LayoutParams childParam2 = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
childParam1.weight = 0.5f;
horizontalTwo.setLayoutParams(childParam2);
horizontalLinearLayout.addView(horizontalOne);
horizontalLinearLayout.addView(horizontalTwo);
// Insert the inflated layout to the main layout.
verticalLinearLayout.addView(horizontalLinearLayout);
// Add the second vertical Button
Button secondVerticalButton = new Button(Activity.this);
secondVerticalButton.setText("Vertical");
verticalLinearLayout.addView(secondVerticalButton);

use table.setOrientation(LinearLayout.HORIZONTAL); .
Hope it Helps.

Applying LayoutParams hides the View

In the code snippet below there's one commented line. When I uncomment that line, then the contents of LinearLayout are not displayed in a TableRow. Without setting the LayoutParams, the row displays both texts. I don't understand this behavior. I know that I can include complex views via xml files, but I'd rather understand what's wrong with this code:
TableLayout tableLayout = (TableLayout) findViewById(R.id.table);
TableRow tableRow = new TableRow(this );
tableRow.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.MATCH_PARENT));
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, TableRow.LayoutParams.MATCH_PARENT);
LinearLayout linearLayout = new LinearLayout(this);
linearLayout.setOrientation(LinearLayout.HORIZONTAL);
// when I comment out this line, the row only shows the second text.
// linearLayout.setLayoutParams(layoutParams);
TextView textLabel = new TextView(this);
textLabel.setText("inside linear layout");
linearLayout.addView(textLabel);
TextView message = new TextView(this);
message.setText( "inside tablerow");
tableRow.addView(linearLayout);
tableRow.addView(message);
tableLayout.addView(tableRow);

Assuming the question is something like "What's the issue of this? How to resolve this?", here's my answer:
When you are setting LayoutParams to a View, those params would be used by the parent of this View to layout that View appropriately. So in your case what you have done is following:
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(...);
linearLayout.setLayoutParams(layoutParams);
tableRow.addView(linearLayout);
Now, the tableRow is confused, because it expects TableRow.LayoutParams in order to layout the view appropriately, but it suddenly finds out some other layout params. Whereas, had you not explicitly specified params (i.e. when linearLayout.setLayoutParams() is commented out), the default layout params would be generated.
#Override
protected LinearLayout.LayoutParams generateDefaultLayoutParams() {
return new LayoutParams(); // this is TableRow.LayoutParams
}
So, instead of creating LinearLayout.LayoutParams, create TableRow.LayoutParams:
TableRow.LayoutParams layoutParams = new TableRow.LayoutParams(...);
linearLayout.setLayoutParams(layoutParams);
tableRow.addView(linearLayout);

how to arrange button at bottom of scrollview programatically

Here is my code to display button at bottom of scroll view programmatically.but only scrollview is displaying.button is not displaying on the screen.how to fix this.
LinearLayout ll = new LinearLayout(this);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT);
ll.setLayoutParams(lp);
ScrollView scrollView = new ScrollView(this);
TableLayout resultLayout = new TableLayout(this);
resultLayout.setStretchAllColumns(true);
resultLayout.setShrinkAllColumns(true);
scrollView.addView(resultLayout);
ll.addView(scrollView);
Button btn = new Button(this);
ViewGroup.LayoutParams blp = new ViewGroup.LayoutParams(
LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT);
btn.setLayoutParams(blp);
btn.setText("Click Me");
//ll.addView(rl1);
ll.addView(btn);
setContentView(ll);
screen of scroll view which contains

Try this approach... Change your ll (Linear Layout) to relative layout then put the properties for button to attach at layout bottom and and for scroll view to attach above button....hope you get my point....

Change your current layout LinearLayout with RelativeLayout and use this params. it will work
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
lp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);

Just Add the Footer to the Scroll View and then get the button as you wish.
Button btn = new Button(this);
ViewGroup.LayoutParams blp = new ViewGroup.LayoutParams(
LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT);
btn.setLayoutParams(blp);
btn.setText("Click Me");
Then Add the view to your Scroll View.
ll.addFooterView(btn);

Adding multiple framelayout in a linearlayout programmatically

I need to overlap an image view with textview. And this combined view will be repeated 100 times in a LinearLayout. I was thinking of using FrameLayout in LinearLayout and Repeating the FrameLayout in LinearLayout 100 times when FrameLayout holds the imageview and textview overlapped.
Need to do this programatically not from xml file.
I added the image and textview to framelayout first then tried to add the framelayout to linearlayout. But it says : the specified child has already a parent.. so not working. Can you please show me in code? Thanks for your help.
it is going to be like this, but need to be done programmaticaly
---linear layout--------------
------------------------------
|frame layout----------------|
||txt view on top of img view|
------------------------------
frame layout will be repeated|
---/end of linear layout------
Also here is the separated code:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_test);
LinearLayout dynamicview = (LinearLayout) findViewById(R.id.main_layout);
FrameLayout barFrameLayout = new FrameLayout(this);
FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT,
Gravity.CENTER);
barFrameLayout.setLayoutParams(params);
LinearLayout.LayoutParams slparams1 = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
for (int i = 65; i <= 75; i++) {
TextView catTV = new TextView(this);
catTV.setLayoutParams(slparams1);
catTV.setText("===" + Character.toString((char) i) + "===");
catTV.setTextSize(32);
ImageView iv = new ImageView(this);
iv.setImageResource(R.drawable.ic_launcher);
iv.setLayoutParams(slparams1);
barFrameLayout.addView(catTV);
barFrameLayout.addView(iv);
dynamicview.addView(barFrameLayout);
}
}

Here is the code to demonstrate what you are trying to achieve. I have used RelativeLayout, which is very flexible, you can position the elements easily relative to others.( if you need to change to FrameLayout you can change ).
import android.content.Context;
import android.util.AttributeSet;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class ExampleLayout extends LinearLayout{
public ExampleLayout(Context context,AttributeSet attrs){
super(context,attrs);
for(int i =0; i< 100; i++){
RelativeLayout childLayout = new RelativeLayout(context);
ImageView img = new ImageView(context);
TextView text = new TextView(context);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
childLayout.addView(img, params);
params = new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
childLayout.addView(text, params);
LinearLayout.LayoutParams parentParams = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
this.addView(childLayout,parentParams);
}
}
}
You can then use the ExampleLayout class to add it to any of the layout.xml file.

FrameLayout is designed to block out an area on the screen to display
a single item
(source: http://developer.android.com/reference/android/widget/FrameLayout.html).
Anyway, you have to create new FrameLayouts not use the same.
When you're doing:
barFrameLayout.addView(catTV);
barFrameLayout.addView(iv);
dynamicview.addView(barFrameLayout);
you're always adding these new objects (catTV and iv) to the same instance of a FrameLayout (barFrameLayout).
I don't think that's what you wanted to do.

Android button layout

I have recently coded my button to be aligned to the right of the screen and it seems to not want to work.
I have also checked to see if my parent layout is set to cover the whole width of the screen and it is.
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
//Vertical Layout - For the layout of the newSheetLayout.
newSheetLayoutV = new LinearLayout(this);
newSheetLayoutV.setOrientation(LinearLayout.VERTICAL);
//Horizontal layout - nested in Vertical layout. Used for the next, back and save buttons.
newSheetButtonLayoutH = new LinearLayout(this);
newSheetButtonLayoutH.setOrientation(LinearLayout.HORIZONTAL);
//Vertical Layout - For the layout of the newSheetLayout.
dataShowV = new LinearLayout(this);
dataShowV.setOrientation(LinearLayout.VERTICAL);
//Horizontal layout - nested in the dataShow V. Used for the data entry objects.
dataShowH = new LinearLayout(this);
dataShowH.setOrientation(LinearLayout.HORIZONTAL);
//Next button.
nextButton = new Button(this);
nextButton.setText("NEXT >");
nextButton.setOnClickListener(nextListener);
//Back button.
backButton = new Button(this);
backButton.setText("< BACK");
backButton.setOnClickListener(backListener);
backButton.setEnabled(false);
//Save button.
saveButton = new Button(this);
saveButton.setText("Save");
saveButton.setOnClickListener(saveListener);
saveButton.setEnabled(false);
//Addition of the buttons to the button view in order that needs to be seen.
newSheetButtonLayoutH.addView(backButton);
newSheetButtonLayoutH.addView(nextButton);
newSheetButtonLayoutH.addView(saveButton);
//Layout Param's for the buttons.
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
newSheetButtonLayoutH.setLayoutParams(params);
//Set save to anchor right.
LinearLayout.LayoutParams saveButtonParam = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
saveButtonParam.gravity = Gravity.RIGHT;
saveButton.setLayoutParams(saveButtonParam);
//Add all the layout Views to the main layout view.
newSheetLayoutV.addView(dataShowV);
newSheetLayoutV.addView(newSheetButtonLayoutH);
newSheetLayoutV.setGravity(Gravity.BOTTOM);
setContentView(newSheetLayoutV);
}
If it is something simple and I'm very blind to the solution, I will punish myself accordingly.
Thank you for your help.

try
saveButton.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,Gravity.RIGHT);
if you are using xml and your need is not to do it in dynamic way then do
android:layout_gravity="right"
Edit:
i think this is what you want
LinearLayout newSheetLayoutV,dataShowV,dataShowH,newSheetButtonLayoutH,newlayout;
Button nextButton,backButton,saveButton;
//RelativeLayout ;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
newSheetLayoutV = new LinearLayout(this);
newSheetLayoutV.setOrientation(LinearLayout.VERTICAL);
//Horizontal layout - nested in Vertical layout. Used for the next, back and save buttons.
newSheetButtonLayoutH = new LinearLayout(this);
newSheetButtonLayoutH.setOrientation(LinearLayout.HORIZONTAL);
newlayout = new LinearLayout(this);
newlayout.setOrientation(LinearLayout.VERTICAL);
newlayout.setGravity(Gravity.RIGHT);
newlayout.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT));
//newSheetButtonLayoutH = new RelativeLayout(this);
//Vertical Layout - For the layout of the newSheetLayout.
dataShowV = new LinearLayout(this);
dataShowV.setOrientation(LinearLayout.VERTICAL);
//Horizontal layout - nested in the dataShow V. Used for the data entry objects.
dataShowH = new LinearLayout(this);
dataShowH.setOrientation(LinearLayout.HORIZONTAL);
//Next button.
nextButton = new Button(this);
nextButton.setText("NEXT >");
//nextButton.setOnClickListener(nextListener);
//Back button.
backButton = new Button(this);
backButton.setText("< BACK");
//backButton.setOnClickListener(backListener);
backButton.setEnabled(false);
//Save button.
saveButton = new Button(this);
saveButton.setText("Save");
//saveButton.setOnClickListener(saveListener);
saveButton.setEnabled(false);
LinearLayout.LayoutParams saveButtonParam = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
//saveButtonParam.gravity = Gravity.RIGHT;
saveButton.setLayoutParams(saveButtonParam);
//Addition of the buttons to the button view in order that needs to be seen.
newSheetButtonLayoutH.addView(backButton);
newSheetButtonLayoutH.addView(nextButton);
newlayout.addView(saveButton);
newSheetButtonLayoutH.addView(newlayout);
//Layout Param's for the buttons.
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
newSheetButtonLayoutH.setLayoutParams(params);
//Set save to anchor right.
//Add all the layout Views to the main layout view.
newSheetLayoutV.addView(dataShowV);
newSheetLayoutV.addView(newSheetButtonLayoutH);
newSheetLayoutV.setGravity(Gravity.BOTTOM);
setContentView(newSheetLayoutV);
}

Try giving RelativeLayout params
RelativeLayout.LayoutParams rel_lp = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
rel_lp.addRule(RelativeLayout.ALIGN_RIGHT);
rel_lp.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
btn.setLayoutParams(rel_lp);

Try setting the layout_gravity of LinearLayout instead of your Button.