Can't add RelativeLayout programmatically in android

Question

i have some xml layout file.this is a my xml layout source code

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >

<RelativeLayout
    android:id="@+id/rot"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:background="#ff0000" >

    <ImageView
        android:id="@+id/btn_categorry"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_marginRight="12dp"
        android:background="@drawable/ic_launcher" />
</RelativeLayout>

i try to add new RelativeLayout programmatically,bellow my 'rot' layout.i wrote some code but i can't add new layout this is a my source

img.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            RelativeLayout.LayoutParams parms = new RelativeLayout.LayoutParams(
                    RelativeLayout.LayoutParams.FILL_PARENT,
                    RelativeLayout.LayoutParams.WRAP_CONTENT);
            final RelativeLayout ll = new RelativeLayout(
                    getApplicationContext());

            Button add_btn = new Button(getApplicationContext());
            add_btn.setText("Click to add TextViiews and EditTexts");
            ll.addView(add_btn);

            parms.addRule(RelativeLayout.BELOW, R.id.rot);
            ll.setLayoutParams(parms);
        }
    });

as i said i can't add layout.what am i doing wrong? if anyone knows solution please help me thanks

So Just now add your `ll` layout to your main parent `Relativelayout`. — Piyush, Nov 11 '14 at 12:30
If you're adding more views to the relativelayout, you'd be better off just designing a custom view and instantiating that to add to the parent view, instead of having reams of code adding individual components at runtime. — laminatefish, Nov 11 '14 at 12:32
@ Blaze Tama i want to add new layout bellow my 'rot' layout.layout witch i have xml file — chromelend, Nov 11 '14 at 12:32
You must first findviewbyid rot, then added your view to it. — Naruto Uzumaki, Nov 11 '14 at 12:36
[Try this](http://stackoverflow.com/a/4979362/2574791). this code is working. — Satheesh Natarajan, Nov 11 '14 at 13:11

score 1 · Answer 1 · answered Nov 11 '14 at 12:35

1

You're not adding the layout to the root view. Call:

((ViewGroup)findViewById(R.id.rot)).addView(ll);

answered Nov 11 '14 at 12:35

Pedro Oliveira

20,442
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score 0 · Answer 2 · answered Nov 11 '14 at 12:39

0

after this line:

 ll.setLayoutParams(parms);

added this code:

RelativeLayout root = (RelativeLayout).findViewById(R.id.rot);
root.addView(ll);

answered Nov 11 '14 at 12:39

Naruto Uzumaki

2,019
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37

score 0 · Accepted Answer · answered Nov 11 '14 at 12:53

0

create object of your main Relative Layout.

       RelativeLayout main = (RelativeLayout)findViewById(R.id.mainRelativeLayout);
       main.addView(ll);

add above code after ll.setLayoutParams(parms);

answered Nov 11 '14 at 12:53

Ravi

34,851
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Can't add RelativeLayout programmatically in android

3 Answers3