Button resize problem. Android

Question

in my project i have a view with 4 buttons. I have a relative layout to place them correctly. The thing is that i want the buttons to fill the whole screen without disappearing and I don't want to set a fixed size to them to ensure that the buttons will fit in any screen size. Right now the only thing i can see is one big button because RelativeLayout has no android:layout_weight. How can i accomplish this? Here's what i got:

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout 
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

          <Button
                android:id="@+id/search_icon"
                android:background="@drawable/search_icon"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                />

          <Button
                android:id="@+id/categories_icon"
                android:background="@drawable/categories"
                android:layout_toRightOf="@+id/search_icon"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                />

          <Button
                android:id="@+id/green_icon"
                android:background="@drawable/green_icon"
                android:layout_below="@+id/search_icon"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                />

          <Button
                android:id="@+id/red_icon"
                android:background="@drawable/red_icon"
                android:layout_toRightOf="@+id/green_icon"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                />

    </RelativeLayout>

Answer 1

Read this guy's blog if you have any of these problems: http://blog.stylingandroid.com/

Lots of examples, and explains things like weight really well.

Answer 2

Well, it seems easier than I thought... I think you are looking for this:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
android:orientation="vertical" >

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:layout_weight="1" 
    android:layout_>

    <Button android:id="@+id/button1" 
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" 
        android:layout_weight="1"
        android:text="1" />

    <Button android:id="@+id/button2" 
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" 
        android:layout_weight="1"
        android:text="2" />
</LinearLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:layout_weight="1" >

    <Button android:id="@+id/button3" 
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" 
        android:layout_weight="1"
        android:text="3" />

    <Button android:id="@+id/button4" 
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" 
        android:layout_weight="1"
        android:text="4" />
</LinearLayout>

Try it out, it should look like this:

Answer 3

Is this what you are looking for?

Here is the code I did for this layout:

<?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="wrap_content"
    android:orientation="vertical">

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">
      <Button
            android:text="BUTTON 1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            />

      <Button
            android:text="BUTTON 2"
            android:layout_toRightOf="@+id/search_icon"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            />
</LinearLayout>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">
      <Button
            android:text="BUTTON 3"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="1"
            />

      <Button
            android:text="BUTTON 4"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="1"
            />
</LinearLayout>
</LinearLayout>

Answer 4

The thing about RelativeLayout is that you have to tell where to put the itens. Example:

<Button android:id="@+id/buyTicket" 
    android:layout_width="match_parent"
    android:layout_height="wrap_content" 
    android:text="Buy ticket"
    android:layout_above="@id/LinearLayout02" />

<ImageView android:id="@+id/logo"
    android:src="@drawable/logo"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_above="@id/buyTicket" />

Pay attention to android:layout_above="@id/buyTicket". If you want button A on top of button B, you first declare button A (for example), align it to top of parent, and then at the button B declaration, you say you want it under button A.

In your case, you have to declare button A, B, C and D, then set android:layout_alignParentTop="true" in button A, and then set android:layout_bellow on B, C and D (to the one before them). And don't forget to set height and width to wrap_content.