Develop Reference

No view found for id for fragment, even that the FrameLayout is a child of the main layout

I've created code so that Fragment is added dynamically when I tap on a menu button. However I get the error:
No view found for id 0x7f0d009a (tech.glasgowneuro.attysecg:id/fragment_container2) for fragment XYPlotFragment{a75aa2e #0 id=0x7f0d009a}
I've been through all the other posts here and the std answer is that the Frame layout needs to be child of the main layout. I think I've done that right. Still no id is found.
activity_plot_window.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/mainlayout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/my_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:elevation="4dp"
android:theme="#style/ThemeOverlay.AppCompat.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<tech.glasgowneuro.attysecg.InfoView
android:id="#+id/infoview"
title="Plot Window"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp" />
<tech.glasgowneuro.attysecg.RealtimePlotView
android:id="#+id/realtimeplotview"
title="Plot Window"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="10dp" />
</RelativeLayout>
<FrameLayout
android:id="#+id/fragment_container2"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
</RelativeLayout><!-- </LinearLayout> -->
main JAVA code of the Activity:
public class AttysECG extends AppCompatActivity {
...
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
....
setContentView(R.layout.activity_plot_window);
Toolbar myToolbar = (Toolbar) findViewById(R.id.my_toolbar);
setSupportActionBar(myToolbar);
....
}
...
case R.id.showplot:
// Create a new Fragment to be placed in the activity layout
XYPlotFragment plotFragment = new XYPlotFragment();
// Add the fragment to the 'fragment_container' FrameLayout
getSupportFragmentManager().beginTransaction()
.add(R.id.fragment_container2, plotFragment).commit();
The question is why do I get this exception? If I do a findViewById(fragment_container2) then the result is null.
How can I get a valid id for the fragment_container2?
At this point the view is certainly inflated because I trigger this crash long after the app has been started.

I've figured it out. Android studio created two "activity_plot_window.xml" files. One has the suffix _v21 so that there are two versions for the older APIs and the newer ones. It's explained here:
https://developer.android.com/training/material/compatibility.html
I've added the Framelayout to the _v21 file and now it works. See the screenshot. It's very easy to oversee when not expanded (just a grey (2)).

You need to find it through FragmentManager:
getSupportFragmentManager().findFragmentById(R.id.fragment_container2);

Multiple layout within one activity android

In my activity IndividualActivity i have set the contextview of individual.xml now i also want to add another sub_individual.xml in the activity without removing, replacing or hiding the individual.xml so that they remain together.
public class IndividualActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.individual);
...
}
}
individual.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".IndividualActivity"
android:background="#drawable/default_wall" >
<ListView
android:id="#+id/listx"
android:layout_width="fill_parent"
android:layout_height="380dp"
android:dividerHeight="1dp"/>
...
sub_individual.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="40dip"
android:layout_marginLeft="0dp"
android:background="#323331"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingLeft="5dip"
android:text="custom title bar" >
<ImageView
android:id="#+id/bk_btn"
android:layout_width="35dip"
android:layout_height="35dip"
android:background="#DDD" />
...

This functionality is supported by using Fragments. See http://developer.android.com/guide/components/fragments.html

You can use this from xml
Use "include" tag in your first xml and add second xml in this tag.

Fill a listview without calling setContentView

I want to fill a list with some information. My problem is that I want to fill the last, at the end of an activity.
I try to explain:
Start -> activity1 (layout1) -> activity2 (layout2) -> end (layoutEnd)
Now I want to add some information to a list and I want to do this the onCreate of the end (activity). I can't setContentView to the layout of the activity, because I set that to layoutEnd.
Code end:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.training_beendet);
listview = (ListView) findViewById(R.id.listview);
listview.setAdapter(new yourAdapter(this, new String[] { "Anfänger 1"}));
}
Layout with listView:
<?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="horizontal" >
<ListView
android:id="#+id/listview"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</ListView>
</LinearLayout>
Layout with textViews for the listView:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
>
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Header"
android:id="#+id/header"/>
<TextView
android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="15dp"
android:layout_toRightOf="#id/header" />
</RelativeLayout>

You can preserve a boolean flag either in SharedPreference or in database inside MainActivity, my mean of flag is to maintain a value whether it's a fresh start or not.
Inside onCreate() method of MainActivity, just check that boolean flag variable, if it's fresh start then launch Start activity otherwise Activity with ListView.
If it's fresh start and you are in the end, then write an Intent to launch activity which is having listview with information.

Resize layout to get into other layout

I created a menuView.xml layout to be in all of the layouts of my activity. This layout has one column on each border and a title bar like this:
ComposeView http://img845.imageshack.us/img845/2121/d6zp.png
I insert this layout in the other layouts this way:
<!-- Show menu -->
<com.example.MenuView
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
But if one of the layouts has full screen view, part of this view gets covered by the MenuView, so...
How could I tell to this view to adapt its size to the blank space inside the MenuView to not get covered by it?
UPDATE -- full XML included
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:background="#drawable/degradado">
<!-- Show menu -->
<com.example.MenuView
android:layout_width="match_parent"
android:layout_height="match_parent" />
<RelativeLayout
android:id="#+id/Left_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentBottom="true" >
//Here go buttons, views, etc...
</RelativeLayout>
<RelativeLayout
android:id="#+id/Right_layout"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentRight="true"
android:layout_alignParentBottom="true" >
//Here go buttons, views, etc...
</RelativeLayout>
What happens here is that these 2 Relative layouts get covered by the MenuView (The darkest gre borders and the top black bar), and the ideal way would be that these 2 layouts get fitted to the blank space (the clearest gray).
I can solve this setting margin sizes to the Relative layouts to fit inside of it, but i know this is not the best way to do it, so I don't know if there is another way.

I think the best way to solve your issue is with inheritance.
If you define an Activity that can be used as a template for all your fleshed out Activitys to add their content to.
I don't know what you custom menu is 'made of' but as a simple example:
Create a basic Activity with code:
public class ActivityWithMenu extends Activity
{
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_with_menu_layout);
}
}
and xml:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ActivityWithMenu" >
<TextView
android:layout_width="match_parent"
android:layout_height="20dip"
android:background="#ff000000"
android:textColor="#ffffffff"
android:text="Main Menu Title Bar"
android:id="#+id/mainmenutitle" />
<LinearLayout
android:layout_width="20dip"
android:layout_height="match_parent"
android:layout_below="#+id/mainmenutitle"
android:layout_alignParentLeft="true"
android:background="#ff999999"
android:orientation="vertical"
android:id="#+id/lefthandmenu" />
<LinearLayout
android:layout_width="20dip"
android:layout_height="match_parent"
android:layout_below="#+id/mainmenutitle"
android:layout_alignParentRight="true"
android:background="#ff999999"
android:orientation="vertical"
android:id="#+id/righthandmenu" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_toLeftOf="#+id/righthandmenu"
android:layout_toRightOf="#+id/lefthandmenu"
android:layout_below="#+id/mainmenutitle"
android:orientation="vertical"
android:id="#+id/activitycontent"
/>
</RelativeLayout>
Then create your xml for a specific Activity, in this case a simple 'Hello World' layout:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#ff00ff00"
android:text="Hello World!"
/>
</LinearLayout>
</ScrollView>
But now when you write the code for this Activity, extend 'ActivityWithMenu' instead of the Activity class direct and inflate this xml layout as follows:
public class Activity1 extends ActivityWithMenu
{
#Override
protected void onCreate(Bundle savedInstanceState)
{
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
super.onCreate(savedInstanceState);
LinearLayout ll = (LinearLayout)findViewById(R.id.activitycontent);
ScrollView sv = (ScrollView)this.getLayoutInflater().inflate(R.layout.activity1_layout, ll, false);
ll.addView(sv);
}
}
I have added the code for making the Activity fullscreen here instead of in the parent ActivityWithMenu class assuming that you wouldn't want them all displayed that way but you could move it into the parent class if appropriate.
Hope this helps.

How do I show a mapview and a listview on the same screen?

Usually I would just seperate out the activities but I want to show a screen that has a view text views, a list, and then a map view. I'm not sure how to go about doing that because I know the activity can only extend either listview or mapview.
I have one xml file like this we'll call it the main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:id="#+id/relativeLayout1"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="fill_parent" android:layout_width="fill_parent">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:orientation="vertical" android:background="#ffffff">
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="#+id/tvName"
android:textColor="#color/dark" android:text="Name"></TextView>
<EditText android:layout_width="match_parent"
android:layout_height="wrap_content" android:id="#+id/etName"></EditText>
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content" android:id="#+id/btnAdd"
android:text="Add location"></Button>
<ListView android:layout_height="wrap_content"
android:layout_width="match_parent" android:id="#android:id/list"></ListView>
</LinearLayout>
and another xml file that is just a big map
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" android:layout_height="fill_parent">
<com.google.android.maps.MapView
android:id="#+id/mapsView" android:layout_width="fill_parent"
android:layout_height="fill_parent" android:clickable="true"
android:apiKey="myapikey" />
The main activity inflates the first xml sheet with the list, but then how do I add the map to this? Do I nest a class that extends the map activity class and some how add the view?
This is what I was thinking
public class AddLocationActivity extends ListActivity{
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
getWindow().setLayout(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
}
public class ShowMap extends MapActivity{
public ShowMap(){
//maybe get the map.xml and add the view somehow?
}
#Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
}

Like mkso commented, you do not need to extend from ListActivity to use a ListView, see this for an example (not the best, but what I could find quickly). Just create the layout how you want it, extend from MapActivity and use the ListView by calling findViewById().