Android User Interface xml question

Question

<LinearLayout android:layout_width="fill_parent" 
            android:orientation="horizontal"
            android:layout_height="wrap_content">
<LinearLayout android:id="@+id/LinearLayout01" 
            android:layout_width="wrap_content" 
            android:orientation="horizontal"
            android:gravity="center_horizontal"
            android:layout_height="wrap_content">
    <TextView android:text="2" 
            android:id="@+id/numberone" 
            android:layout_width="wrap_content" 
            android:textStyle="bold"
            android:textSize="24px"
            android:layout_height="wrap_content"></TextView>
    <TextView android:text="x" 
            android:id="@+id/operation" 
            android:textStyle="bold"
            android:textSize="24px"
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content"></TextView>

    <TextView android:text="5" 
            android:id="@+id/numbertwo" 
            android:textStyle="bold"
            android:textSize="24px"
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content"></TextView>
  </LinearLayout>
 <TextView android:text="5" 
            android:id="@+id/numbertwo" 
            android:textStyle="bold"
            android:textSize="24px"
            android:gravity="left"
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content"></TextView>
 </LinearLayout>

I try to set the first three Textfields in the center, and the last TextField on the left. But all TextViews are displayed on the right.

But i set the gravity tag.

Thanks for your help, Martin

Answer 1

Yes , you set gravity but issue is that it will apply to position in your LinearLayout01. Since your LinearLayout01 has width set to wrap_content, it will occupy just place needed to display 2x5. If you change that to fill_parent, you will see 2x5 in the center, but not the other 5.

For more freedom one option is using RelativeLayout, having other layout types (Linear, Relative ...) as children.

Answer 2

<RelativeLayout android:layout_width="fill_parent" 
            android:orientation="horizontal"
            android:layout_height="wrap_content">
<LinearLayout android:id="@+id/LinearLayout01" 
            android:layout_width="wrap_content" 
            android:orientation="horizontal"
            android:gravity="center_horizontal"
            android:layout_height="wrap_content">
    <TextView android:text="2" 
            android:id="@+id/numberone" 
            android:layout_width="wrap_content" 
            android:textStyle="bold"
            android:textSize="24px"
            android:layout_height="wrap_content"></TextView>
    <TextView android:text="x" 
            android:id="@+id/operation" 
            android:textStyle="bold"
            android:textSize="24px"
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content"></TextView>

    <TextView android:text="5" 
            android:id="@+id/numbertwo" 
            android:textStyle="bold"
            android:textSize="24px"
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content"></TextView>
  </LinearLayout>
 <TextView android:text="5" 
            android:id="@+id/numbertwo" 
            android:textStyle="bold"
            android:textSize="24px"
            android:gravity="left"
            android:layout_width="wrap_content" 
            android:layout_height="wrap_content"></TextView>
 </RelativeLayout>

Mhm, I tried to use RelativeLayout instead of LinearLayout, but I didn't work.