Full screen background image in an activity

There are several ways you can do it.

Option 1:

Create different perfect images for different dpi and place them in related drawable folder. Then set

android:background="@drawable/your_image"

Option 2:

Add a single large image. Use FrameLayout. As a first child add an ImageView. Set the following in your ImageView.

android:src="@drawable/your_image"android:scaleType = "centerCrop"

Another option is to add a single image (not necessarily big) in the drawables (let's name it backgroung.jpg), create an ImageView iv_background at the root of your xml without a "src" attribute.Then in the onCreate method of the corresponding activity:

    /* create a full screen window */    requestWindowFeature(Window.FEATURE_NO_TITLE);    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,            WindowManager.LayoutParams.FLAG_FULLSCREEN);    setContentView(R.layout.your_activity);    /* adapt the image to the size of the display */    Display display = getWindowManager().getDefaultDisplay();    Point size = new Point();    display.getSize(size);    Bitmap bmp = Bitmap.createScaledBitmap(BitmapFactory.decodeResource(      getResources(),R.drawable.background),size.x,size.y,true);    /* fill the background ImageView with the resized image */    ImageView iv_background = (ImageView) findViewById(R.id.iv_background);    iv_background.setImageBitmap(bmp);

No cropping, no many different sized images.Hope it helps!

You should put the various size images into the followings folder

for more detail visit this link

• ldpi

• mdpi

• hdpi

• xhdpi

• xxhdpi

and use RelativeLayout or LinearLayout background instead of using ImageView as follwoing example

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:background="@drawable/your_image"></RelativeLayout>