how to design for all device resolution

hi all i have to use linear layout with all resolution type device such as 480x800,480x854,320x480. i use x,y position for placing element in linear layout while designing for 320x480. i have to redesign for other resolution device therefore it takes more 开发者_StackOverflow社区time. please give common method for all the resolution with linear layout. thanks in advance.

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DON'T design for a specific resolution. Use combinations of layout_weight attributes, layout_width and layout_height values of wrap_content and match_parent to get different proportional widths depending on the screen size, rather than hard coding pixel values.

For example, say you want to add a row of four buttons, each taking up equal width, along the top of the screen, offset from the top left by ~5 pixels:

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="5dp"
    android:gravity="top"
    android:orientation="horizontal"
    >
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"       
        android:text="Button 1"
        />
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"       
        android:text="Button 2"
        />
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"       
        android:text="Button 3"
        />
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"       
        android:text="Button 4"
        />
</LinearLayout>

This will give you a reliable result for any screen density, and you never have to worry about a certain pixel value. The use of dp (device-independent pixel) for the padding also changes slightly depending on the density, so that it stays a consistent physical size no matter what the resolution.

Read through the examples on the Android Developers site about LinearLayouts, FrameLayouts, and RelativeLayouts. You'll get a good feel on what each one is good for, and their advantages and disadvantages.

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You can define different layouts for different screen categories. So you can adapt your layout so that it fits the actual screen. A good resource that describes how this is done is available here:

http://developer.android.com/guide/practices/screens_support.html

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It's a good idea to use density-independent pixel (dp) in layouts. And I think this could be helpful: http://developer.android.com/guide/practices/screens_support.html

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Very EXCELLENT ANSWERS ... I believe that alot of individuals and business alike think that Android is a "Device" and not clearly understanding Android is a "OS". Inorder to properly display images for all devices running Android OS one must go with the option to Support Mutiple Devices and develop according to Android OS and not a certain device running Android OS. I have encountered this problem before, my Boss (at that time) said "What size Images does your Test Device need? I said "just get me the images! I was forced to use 320x480 images (according to the test device) and when the Regional Manager saw the demo product on his ThinkPad (and 4 other device's) I was terminated from my position because my Supervisor thought Android was a Device and Not a OS ... and the company Android App has yet to be completed.My opinion holds "Supporting Mutiple Devices is developing for General Android OS while developing according to "Resolution" is for a certain device or type of device.