Develop Reference

How to dynamically change a sublayout which was assigned using <include/> view in android studio?

I am using < include /> to show a sublayout (layoutA) inside a Main layout.
however, what I want to do is to change the sublayout from layoutA to layoutB dynamically in Java. Which means in <include../> the line layout="#layout/layoutA" should change to layout="#layout/layoutB".I am not sure how to achieve this. Not sure if there is an option like view.setLayout() for .
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
<other data/>
<include
android:id="#+id/id1"
android:layout_width="match_parent"
android:layout_height="match_parent"
layout="#layout/layoutA"
/>
</LinearLayout>
Note: I have about 7-8 sublayouts so I do not just want to create multiple and hide them. Which could be an option.

you can replace include with fragment and keep replace fragment if subviews have different and complex logic if not or simple stuff you can use include and remove all views to remove old one and add a new view
ViewGroup parentLayout = findViewById(R.id.id1);
parentLayout.removeAllViews();
LayoutInflater inflater = LayoutInflater.from(this);
View newSublayout = inflater.inflate(R.layout.layoutB, parentLayout, false);
parentLayout.addView(newSublayout);

Setting CustomView in Android ActionBar; CustomView does not appear

I am trying to set a custom view in an ActionBar. I am using the support.v7 ActionBar - min API is 9. For some odd reason, I cannot get the custom view to appear in the ActionBar. Am I missing something painfully obvious? Any help appreciated.
Here is the layout I am inflating:
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="flsfjkelsjek"
android:background="#color/black"
android:textColor="#color/white"
/>
...Very simple, just a TextView for testing.
Here is the code to set this view as my custom ActionBar view:
TextView customView = (TextView) myInflater.inflate(R.layout.my_test_textview, null);
myActionBar.setDisplayShowTitleEnabled(false);
myActionBar.setDisplayHomeAsUpEnabled(true);
myActionBar.setDisplayShowCustomEnabled(true);
myActionBar.setCustomView(customView, new ActionBar.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
Again, very simple and straightforward. I have tried many different varations on this, such as:
mActionBar.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM | ActionBar.DISPLAY_HOME_AS_UP, ActionBar.DISPLAY_SHOW_TITLE);
and have even tried that line along with all of the above. I've also tried with a TextView just created on the fly, rather than inflating one.
The custom view simply doesn't appear. When I check the value of
myActionBar.getCustomView()
it returns my TextView. However, the width of that TextView is 0. Does anyone have any idea why the CustomView is not showing up?

Create a Custom ImageButton Class with FrameLayout and TextView

I am a newbie, so, any help is appreciated. I read a lot of posts here at StackOverflow and also I searched for my doubt in Google, but it's hard to find a good answer.
Here is what I am trying to do:
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1">
<ImageButton
android:background="#layout/roundcorners"
android:id="#+id/hug"
android:scaleType="centerInside"
android:cropToPadding="false"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:paddingBottom="10dip"
android:layout_height="fill_parent"
android:layout_width="fill_parent"
android:src="#drawable/hug">
</ImageButton>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|center"
android:textColor="#000000"
android:textSize="15dip"
android:textStyle="bold"
android:paddingBottom="5dip"
android:clickable="true"
android:text="Hug">
</TextView>
</FrameLayout>
Above you guys can see the XML version of what I need.
The point is... I will have many of these FrameLayouts at run time. Every information to fill out the buttons will come from a database.
So, I need to create a Java Class where I can use a loop through all the registers from my database and instantiate a new FrameLayout Class (this class must have an ImageButton and a TextView as you can see from above XML) and just pass parameters, like this:
for (int i = 0; i < mArray.length; i++) {
button = new MyNewImageButton(name, src, text);
}
The above is just to simplify. What I mean is that I will pass parameters from my database when creating an Instance of this class that I am planning to create. Of course, every single button created will be added to the layout.
So... my question is: I know how to do this using XML, but I am REALLY having a hard time to create a class to do this.
Any thoughts? Any help is appreciated.
P.S.: Sorry if I made any mistake in my English, ok? I am a Brazilian. Someday my English will be flawless! Sorry if this question was already answered.
sorry to answer my own question to make another question. I tried to use the comments but there's a limitation in the number of characters, so, I am really sorry.
Hey guys and #blessenm. Well... I tried to use inflater and I came up with the following code:
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
// *******************************************
setContentView(R.layout.main);
//this is my main screen
//it's a linearlayout vertical orientation
ViewGroup parent = (ViewGroup) findViewById(R.id.tela_principal);
//these two new LinearLayouts will be one above the other,
//just like two lines
LinearLayout l1 = new LinearLayout(this);
LinearLayout l2 = new LinearLayout(this);
//inside of each linearlayout I set the orientation to horizontal
//so, everytime a picture is inflated from xml, it will fill in one
//linearlayout
l1.setOrientation(LinearLayout.HORIZONTAL);
l2.setOrientation(LinearLayout.HORIZONTAL);
//setting linearlayout parameters, so they fill the whole screen
l1.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
l2.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
//the first two inflated xml imagebuttons I add to LinearView1
view = LayoutInflater.from(getBaseContext()).inflate(R.layout.figurabotao,
l1, true);
view = LayoutInflater.from(getBaseContext()).inflate(R.layout.figurabotao,
l1, true);
//the next two inflated xml imagebuttons I add to LinearView2
view = LayoutInflater.from(getBaseContext()).inflate(R.layout.figurabotao,
l2, true);
view = LayoutInflater.from(getBaseContext()).inflate(R.layout.figurabotao,
l2, true);
//after the above, we should have a grid 2X2
//after linearlayouts are filled, I add them to the main screen
parent.addView(l1, new LinearLayout.LayoutParams(0, 0, 1));
parent.addView(l2, new LinearLayout.LayoutParams(0, 0, 1));
However this is not working. In the errorlog I get the following message:
"Unhandled event loop exception".
Any ideas about what I am doing wrong?
Thanks!

If you are just trying to create a view from the xml and add it to the layout. Just use the LayoutInflater.
Inside the activity use something like
FrameLayout frame = (FrameLayout)getLayoutInfalter.inflate(
R.id.YOUR_VIEW_XML,null);
layout.addView(frame);
If you are trying to create a class extend the frame layout or the the view. Create a constructor which takes your parameters and assign's the required values.
EDIT:
To Acess Elements Inside
If you have set id's to those element, you can access them by
TextView text = (TextView)frame.findViewById(R.id.yourtextview);
Or you can use the child index like
TextView text = (TextView)frame.getChildAt(0);

It sounds like you are looking for a way to create a view class that will be an ImageButton and a TextView wrapped with a FrameLayout.
In this case, you could look into creating your own View class. Probably a View class that extends FrameLayout. See this dev article for more information about how to create a custom view. http://developer.android.com/guide/topics/ui/custom-components.html
Specifically the "Compound Controls" section: http://developer.android.com/guide/topics/ui/custom-components.html#compound

Android overlay a view ontop of everything?

Can you overlay a view on top of everything in android?
In iPhone I would get the new view set its frame.origin to (0,0) and its width and height to the width and height of self.view. Adding it to self.view would then cause it to act as an overlay, covering the content behind (or if it had a transparent background then showing the view behind).
Is there a similar technique in android? I realise that the views are slightly different (there are three types (or more...) relativelayout, linearlayout and framelayout) but is there any way to just overlay a view on top of everything indiscriminately?

Simply use RelativeLayout or FrameLayout. The last child view will overlay everything else.
Android supports a pattern which Cocoa Touch SDK doesn't: Layout management.
Layout for iPhone means to position everything absolute (besides some strech factors). Layout in android means that children will be placed in relation to eachother.
Example (second EditText will completely cover the first one):
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/root_view">
<EditText
android:layout_width="fill_parent"
android:id="#+id/editText1"
android:layout_height="fill_parent">
</EditText>
<EditText
android:layout_width="fill_parent"
android:id="#+id/editText2"
android:layout_height="fill_parent">
<requestFocus></requestFocus>
</EditText>
</FrameLayout>
FrameLayout is some kind of view stack. Made for special cases.
RelativeLayout is pretty powerful. You can define rules like View A has to align parent layout bottom, View B has to align A bottom to top, etc
Update based on comment
Usually you set the content with setContentView(R.layout.your_layout) in onCreate (it will inflate the layout for you). You can do that manually and call setContentView(inflatedView), there's no difference.
The view itself might be a single view (like TextView) or a complex layout hierarchy (nested layouts, since all layouts are views themselves).
After calling setContentView your activity knows what its content looks like and you can use (FrameLayout) findViewById(R.id.root_view) to retrieve any view int this hierarchy (General pattern (ClassOfTheViewWithThisId) findViewById(R.id.declared_id_of_view)).

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/root_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:id = "#+id/Everything"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<!-- other actual layout stuff here EVERYTHING HERE -->
</LinearLayout>
<LinearLayout
android:id="#+id/overlay"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right" >
</LinearLayout>
Now any view you add under LinearLayout with android:id = "#+id/overlay" will appear as overlay with gravity = right on Linear Layout with android:id="#+id/Everything"

You can use bringToFront:
View view=findViewById(R.id.btnStartGame);
view.bringToFront();

The best way is ViewOverlay , You can add any drawable as overlay to any view as its overlay since Android JellyBeanMR2(Api 18).
Add mMyDrawable to mMyView as its overlay:
mMyDrawable.setBounds(0, 0, mMyView.getMeasuredWidth(), mMyView.getMeasuredHeight())
mMyView.getOverlay().add(mMyDrawable)

I have just made a solution for it. I made a library for this to do that in a reusable way that's why you don't need to recode in your XML. Here is documentation on how to use it in Java and Kotlin. First, initialize it from an activity from where you want to show the overlay-
AppWaterMarkBuilder.doConfigure()
.setAppCompatActivity(MainActivity.this)
.setWatermarkProperty(R.layout.layout_water_mark)
.showWatermarkAfterConfig();
Then you can hide and show it from anywhere in your app -
/* For hiding the watermark*/
AppWaterMarkBuilder.hideWatermark()
/* For showing the watermark*/
AppWaterMarkBuilder.showWatermark()
Gif preview -

I have tried the awnsers before but this did not work.
Now I jsut used a LinearLayout instead of a TextureView, now it is working without any problem. Hope it helps some others who have the same problem. :)
view = (LinearLayout) findViewById(R.id.view); //this is initialized in the constructor
openWindowOnButtonClick();
public void openWindowOnButtonClick()
{
view.setAlpha((float)0.5);
FloatingActionButton fb = (FloatingActionButton) findViewById(R.id.floatingActionButton);
final InputMethodManager keyboard = (InputMethodManager) getSystemService(getBaseContext().INPUT_METHOD_SERVICE);
fb.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
// check if the Overlay should be visible. If this value is false, it is not shown -> show it.
if(view.getVisibility() == View.INVISIBLE)
{
view.setVisibility(View.VISIBLE);
keyboard.toggleSoftInput(InputMethodManager.SHOW_IMPLICIT, 0);
Log.d("Overlay", "Klick");
}
else if(view.getVisibility() == View.VISIBLE)
{
view.setVisibility(View.INVISIBLE);
keyboard.toggleSoftInput(0, InputMethodManager.HIDE_IMPLICIT_ONLY);
}

bringToFront() is super easy for programmatic adjustments, as stated above. I had some trouble getting that to work with button z order because of stateListAnimator. If you end up needing to programmatically adjust view overlays, and those views happen to be buttons, make sure to set stateListAnimator to null in your xml layout file. stateListAnimator is android's under-the-hood process to adjust translationZ of buttons when they are clicked, so the button that is clicked ends up visible on top. This is not always what you want... for full Z order control, do this:

Is it possible to set content view of a single view group within the code?

I want to know whether it is possible to use an xml layout file to define the content of a view dynamically from within the code. When we start an activity we pass it the xml layout to use with the method call setContentView(R.layout.main); but is it possible to use an xml layout file to define a dynamically created ViewGroup such as LinearLayout?
I have a layout xml which shows a score table for a game. Each score that is displayed on this screen needs to be dynamically added via code. I know that it is possible within the code to create a ViewGroup for this score and populate it with all the things I need to make a single score, and then do this every time for each score, and then add them all to the existing UI structure, already defined in the xml layout. What I would like to know is if it is possible to use another xml file to do this?
For example, a layout xml file:
<LinearLayout android:id="#+id/top">
<LinearLayout android:id="#+id/column_heading"/>
</LinearLayout>
In another xml layout file is something like:
<LinearLayout android:id="#+id/row">
<TextView/>
<TextView/>
<TextView/>
<TextView/>
</LinearLayout>
Within the code I would like to do something like the following:
LinearLayout top = (LinearLayout)findViewById(R.id.top);
for (int i = 0; i < num_of_rows; i++) {
LinearLayout row = new LinearLayout(this);
row.setContentView(R.layout.row); //where R.layout.row is the second layout above
// ... dynamically change values as needed
top.addView(row);
}
However .setContentView(...) is not a valid method of LinearLayout. Is there another way to do this? I know I could do it all by code, but that's rather messy and this way would seem to be very tidy and rational..

You should use LayoutInflater for this. Here is a short example
LinearLayout top = (LinearLayout)findViewById(R.id.top);
for (int i = 0; i < num_of_rows; i++) {
LayoutInflater inflater = LayoutInflater.from(this);
LinearLayout row = (LinearLayout)inflater.inflate(R.layout.row, null);
// ... dynamically change values as needed
top.addView(row);
}

LayoutInflater vi = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = vi.inflate(R.layout.row, null);

You can use LayoutInflater's inflate method to inflate an arbitrary layout from resources. If you provide a root view parameter to this method, the inflated layout will be contained within it. This way you can inflate the XML view into your row.