Android: addview()- adding a new view on top of activity

Question

I have the following layout with an imageview and textfield,

<?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="vertical" 
    >

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_marginRight="26dp"
        android:layout_marginTop="22dp"
        android:src="@drawable/a01" />

     <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_below="@+id/imageView1"
        android:layout_marginTop="31dp"
        />

</RelativeLayout>

This layout will be transparent and I want to call this layout on top of a particular activity ,when the particular activity first starts, how to implement it with addview()?

Also have a look at my question https://stackoverflow.com/questions/76529993/add-view-to-android-rootview-application-without-permission — Taimoor Khan, Jun 22 '23 at 11:23

score 44 · Accepted Answer · edited Nov 01 '13 at 18:53

44

When you want to show it:

FrameLayout rootLayout = (FrameLayout)findViewById(android.R.id.content);
View.inflate(this, R.layout.overlay_layout, rootLayout);

Then when you want to remove it:

FrameLayout rootLayout = (FrameLayout)findViewById(android.R.id.content);
rootLayout.removeViewAt(rootLayout.getChildCount()-1);

That's a concise solution, you should remove the View by giving the RelativeLayout an id in the XML file, then remove by: rootLayout.removeView(findViewById(R.id.the_id_of_the_relative_layout));.

edited Nov 01 '13 at 18:53

turbo

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answered Jan 07 '13 at 12:02

nmw

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getting error at this line View.inflate(this, R.layout.overlay_layout. rootLayout); – teekib Jan 07 '13 at 12:10
Change 'overlay_layout' to whatever you've named the layout that you posted. – nmw Jan 07 '13 at 12:13
i did..error saying R.layout.quicktip doesn't have a field rootlayout – teekib Jan 07 '13 at 12:15
Ah, there was a typo - typed '.' instead of ',' - now fixed. – nmw Jan 07 '13 at 12:17
FrameLayout rootLayout = (FrameLayout)findViewById(android.R.id.content); View.inflate(this, R.layout.overlay_layout, rootLayout); this worked – teekib Jan 07 '13 at 12:26
how to remove layout view when cancel button in the same layout is clicked – teekib Jan 07 '13 at 12:28
Set an onClickListener (google 'view setonclicklistener') on your cancel button, then put the second part of the code I listed inside onClick(). – nmw Jan 07 '13 at 12:32
i did that ..thanks...can u suggest how i can disable calling activity layout untill the my trasparent layout is on top? – teekib Jan 07 '13 at 12:42
Not sure what you mean, post another question with more detail. – nmw Jan 07 '13 at 12:44
now when my trasparent layout is on top of the activityA, the actual layout of the activityA is still functional, how to diable it. – teekib Jan 07 '13 at 12:47
1

See http://stackoverflow.com/questions/14181394/how-to-disable-all-child-elements-of-view-to-capture-mouse-touch-event. If you don't understand how to do what that post explains, then ask another question. – nmw Jan 07 '13 at 12:52
@nmw Have a look at my question https://stackoverflow.com/questions/76529993/add-view-to-android-rootview-application-without-permission – Taimoor Khan Jun 22 '23 at 11:23

itsrajesh4uguys · Answer 2 · 2013-01-07T11:45:18.290

2

Please use the following code to add the view.

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

// fill in any details dynamically here
TextView textView = (TextView) v.findViewById(R.id.a_text_view);
textView.setText("your text");

// insert into main view
View insertPoint =(View) findViewById(R.id.insert_point); // edited. 
insertPoint.addView(v, 0, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));

edited Jan 07 '13 at 11:45

answered Jan 07 '13 at 11:35

itsrajesh4uguys

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@itsrajesh.. what is this line View insertPoint = findViewById(R.id.insert_point);?? – teekib Jan 07 '13 at 11:40
thats the view which you have to add the layout(any layout file) ..for example - this is your new activity layout . there only you are going to add something.. from another xml file. that may be linear layout or relative layout etc... – itsrajesh4uguys Jan 07 '13 at 11:42
i didn't get your, what will be R.id.insert_point ,in my context? – teekib Jan 07 '13 at 11:44
see now the edited answer View insertPoint =(View) findViewById(R.id.insert_point); // edited. – itsrajesh4uguys Jan 07 '13 at 11:45
that your layout id.. to which layout (view ) you are going to add. – itsrajesh4uguys Jan 07 '13 at 11:48
you mean layout id of calling acitivity or the transparent layout? – teekib Jan 07 '13 at 11:50
you want to show like popup right ??? or want to add some other formats?? else show this transparent layout as the another Activity and show as on top of your needed activity. – itsrajesh4uguys Jan 07 '13 at 12:14
else provide us the code.. which you are using to show the transparent activity. – itsrajesh4uguys Jan 07 '13 at 12:14
how to call my activity on top of a other activity , when that other activity loads ? – teekib Jan 07 '13 at 12:17
from your activity on create pass the intent to transparent activity.. so it will look like being in top of your current activity. – itsrajesh4uguys Jan 07 '13 at 12:42

score 1 · Answer 3 · answered Jan 07 '13 at 11:45

1

The layout of your calling activity should be inside FrameLayout (as in this layout last view added will be always on top of previous view ) , in onCreate method of calling activity inflate the given layout using LayoutInflater and use addView method of activity directly.

answered Jan 07 '13 at 11:45

android2013

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my calling activity dont have framelayout, without framelayourt can i use? – teekib Jan 07 '13 at 11:51
You can put a FramLayout in calling activity xml file (topmost node ) , as you need to put new view on top of current activity otherwise it will be added after last view . – android2013 Jan 07 '13 at 11:59

Android: addview()- adding a new view on top of activity

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