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Replace a full screen fragment with another

I have a fragment (fragment_1) which gets displayed when the main activity starts and displays a full screen layout (layout_1). Now i have added a button, clicking on which will start a new fragment (fragment_2)and replace the entire layout (layout_1) with my new layout (layout_2).
My first fragment (fragment_1) has a ScrollView as my root view.
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:background="#fff"
android:scrollbarSize="0dp"
android:id="#+id/scroll_main"
tools:context=".MainActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true">
....
</RelativeLayout>
</ScrollView>
Now i want to start a new fragment (fragment_2) on a button click and display another layout (layout_2) but i don't know how to do that.
My main activity had a frame layout like this
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/root_container">
And i used to set this as my default layout using
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
After this i start my first fragment and display the layout_1.
Now from fragment_1 i want to start fragment_2 and display the layout_2. I have read online articles and documentation where i can't find and solution regarding this. Pleas Note :" I don't want to simply replace a part of my layout_1 and replace it with my layout_2 rather i want my layout_1 totally gets replaced with layout_2 on a button click"

Replacing fragments seems like a job for the fragment manager.
This answer might help you Replacing a fragment with another fragment inside activity group

Android app tutorial content.xml and activity.xml files have different code to tutorial

I'm working through the android tutorial at
http://developer.android.com/training/basics/firstapp/building-ui.html
I've created the project as stated in the tutorial however the code that it says is supposed to be in my activity.xml file is instead in my content.xml file its as if they have swapped?
Code in activity xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:fitsSystemWindows="true"
tools:context=".MyActivity">
<android.support.design.widget.AppBarLayout android:layout_height="wrap_content"
android:layout_width="match_parent" android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar android:id="#+id/toolbar"
android:layout_width="match_parent" android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary" app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_my" />
<android.support.design.widget.FloatingActionButton android:id="#+id/fab"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_gravity="bottom|end" android:layout_margin="#dimen/fab_margin"
android:src="#android:drawable/ic_dialog_email" />
</android.support.design.widget.CoordinatorLayout>
Code in content xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:showIn="#layout/activity_main" tools:context=".MainActivity">
<TextView android:text="Hello World!" android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>
The tutorial is telling me to change the relative layout block to linear layout (which it says should be in the activity xml, but for me its in content xml)
So when I replace the code in activity xml with what the tutorial has it gives me errors because I removed the code that was there previously.
OR
if I edit the code in content xml and run the app I can't see the changes because activity is not updated, and I cant move the linear layout code to activity xml because it gives me "multiple root tags" error.
Can someone show me a solution that will allow me to continue with the tutorial, because if I edit the java code or something like that I get problems with later stages in the tutorial.
Thanks

Instead of working on the activity.xml try editing the content.xml to reflect the LinearLayout change (do add the orientation value as shown).
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:showIn="#layout/activity_main" tools:context=".MainActivity">
<TextView android:text="Hello World!" android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
Do also go through on the Android Getting Started Resources. They will come in handy

You just have to keep in mind that these .xml files represent the layout part, the UI.
To put it simply, a 'screen' in Android is composed of 2 files : the layout (the .xml file), and its associated .java file.
Here, we can see that your "content" is included in your "activity".
It's quite the same thing as putting directly the content of "content.xml" into "activity.xml".
What is in the "OnCreate()" method of you MyActivity.java ?
Have you tried replacing the "include" in "activity.xml" by the actual content of "content.xml", not forgetting to remove "root specific" values (xmlns:android, xmlns:tools, xmlns:app and tools:context)?
As fernaMuruthi said, try following the Android Getting Started Resources. Also, try not to use the graphic designer : it sometimes generate crappy code. instead, Type you UI pseudo-xml directly.

I was having the same issue. Never really worked with XML, and my Java is rusty. I ended up searching online a bunch and this is what I found out.
The .xml files are used to determine your layouts for your activity. They can be used in conjunction with one another or separately. This means using content.xml and main_activity.xml don't really matter. However because the tutorial is not very clear about this, it makes it hard for newcomers to figure out a work around.
The solution is to understand what the MainActivity.java file is doing with your .xml files. Mike James at i-programmer explains this fairly well...(http://www.i-programmer.info/programming/android/5914-android-adventures-activity-and-ui.html)
There is a method called onCreate() that controls which layout is being used by MainActivity.java. Here you will see the auto generated function setContentView() this is the main issue with determining what is being displayed in the app.
There is also a bunch of other generated code that is used to get more data from main_activity.xml. If you look at the code you will see what needs to be removed.
Hope this helps. Please up vote if it did :)

So, if you follow the tutorial to a tee, i.e. make your activity_my.xml file the exact same as what they are expecting, then you will see the edit text view and the button view as depicted.
It seems that quite a bit has been added to the blank activity template since the creation of this tutorial, making the tutorial quite obscure.

After looking around for a while and trying multiple solutions I finally realized that the toolbar created in activity_my.xml was obscuring the text/button created in content_my.xml.
My solution was to just pad the linear layout.
android:paddingTop="55dp"
But then again I'm on day #2 in the Android/Java world...

Java - How to add a JPG/PNG file from resources(drawable) to a layout?

I have a relative layout:
RelativeLayout battle_layout = (RelativeLayout) findViewById(R.id.battle);
I need to attach here a child (a JPG image from resources/drawable).
I was writting in c# and javascript earlier, but here it's a bit harder to accomplish :)
Is there someone who could help me? Thanks!

Maybe you can use one of these options. programmatically or in xml:
Add a ImageView to your layout
Set the image as background of your layout
Layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/YOUR_IMAGE">
<ImageView
android:src="#drawable/YOUR_IMAGE"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
Code
ImageView imageView = new ImageView(this);
image.setImageResource(R.drawable.YOUR_IMAGE);
battle_layout.addView(image);

Java - Runnable

I'm trying to set an imageview's resource like so:
Code:
ImageView imageView = new ImageView(getApplicationContext());
imageView.setImageResource(R.drawable.bg);
Yet I see nothing on my screen.
I can set
imageView = (ImageView) findViewById(R.id.bgView);
And it works, but in my instance I can't use this because I need apply the imageview to an arraylist of imageviews.
Is there any other way to construct my imageview or am I doing something wrong?
Edit:
My xml looks like:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/entire_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/black"
tools:context="com.example.guilyan.Game" >
<ImageView
android:id="#+id/bgView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:contentDescription="#string/Descript"
android:scaleType="fitXY"
android:src="#+drawable/testpicks" />
</FrameLayout>

I think u should add the dynamically created image view to your layout.just try this.Suppose if your layout id is frameLayout then
frameLayout.addView(imageView);

Using of
new ImageView(getApplicationContext()); not correct.
You need use activity context, not application.
And of course after initialization of view you need attach it to parent.

How can I make my android dialog fullscreen?

I already tried all things I could find (on stackoverflow and the net) but I somehow cannot set my dialog to fullscreen. It has a scrollview with a textview in it, and when there is not much text in the textview the scrollview is not fullscreen. How can I force it to be fullscreen even when there is not much text visible ?
I create the dialog like this:
final TextView box;
final Dialog info = new Dialog(cx);
final ScrollView scroll;
info.setContentView(R.layout.dialoginfo);
info.setTitle("Info");
info.setCancelable(true);
info.getWindow().setFlags(LayoutParams.FLAG_FULLSCREEN, LayoutParams.FLAG_FULLSCREEN);
scroll = ((ScrollView) info.findViewById(R.id.scrollviewinfo));
scroll.setPersistentDrawingCache(ScrollView.PERSISTENT_NO_CACHE);
scroll.setScrollbarFadingEnabled(false);
box = (TextView) info.findViewById(R.id.infotext);
box.setText(text);
info.show();
This is the xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:id="#+id/infolayout"
>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/ImageView01"
android:layout_weight="1.0"
android:id="#+id/scrollviewinfo">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="#+id/infolayout2">
<TextView android:layout_margin="5dip" android:layout_width="fill_parent" android:layout_height="wrap_content"
android:id="#+id/infotext"
android:textSize="8sp"
android:text=""/>
</LinearLayout>
</ScrollView>
</LinearLayout>

It looks like your ScrollView has its height set to wrap_content, I'd first try replacing it with fill_parent.
Here are some other resources that may help you:
How can I get a Dialog style activity window to fill the screen?
I've never used the setFlags() method, so this may give you the same results. Basically try replacing
info.getWindow().setFlags(LayoutParams.FLAG_FULLSCREEN, LayoutParams.FLAG_FULLSCREEN);
with
info.getWindow().setLayout(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
Alternatively, if you wanted more exact control over the height, you can create an instance of layout params, as the first answer here describes:
How to make an alert dialog fill 90% of screen size?
You can also use this code to get the screen size, if you wanted to modify it to be slightly smaller than full screen.
Display display = ((WindowManager) getSystemService(WINDOW_SERVICE)).getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();
There are quite a few other ways to get the current screen size, too, this is just one example. Good luck!

Have you tried setting layout_height of the ScrollView to "match_parent" (and you can set the LinearLayout to "match_parent" too, though I don't think it's necessary)?. I'm guessing it shrinks when there isn't much text because it's set to "wrap_content". Try this:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:layout_below="#+id/ImageView01"
android:layout_weight="1.0"
android:id="#+id/scrollviewinfo">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="#+id/infolayout2">
...
</LinearLayout>
</ScrollView>

Try wrapping your dialog custom layout into RelativeLayout instead of Linear Layout. That worked for me.