¿Establecer imagen de fondo para el diseño relativo?

Question

He descargado la imagen en tiempo de ejecución. Ahora quiero configurarlo como fondo para el diseño relativo de cómo hacerlo? Es posible

Answer 1

Eche un vistazo a setBackgroundDrawable, o quizás createFromPath en la clase Drawable.

RelativeLayout rLayout = (RelativeLayout) findViewById (R.id.rLayout); 
    Resources res = getResources(); //resource handle 
    Drawable drawable = res.getDrawable(R.drawable.newImage); //new Image that was added to the res folder 

    rLayout.setBackground(drawable); 

Answer 2

usar en su lugar:

View lay = (View) findViewById(R.id.rLayout); 
lay.setBackgroundResource(R.drawable.newImage); 

Esto funciona porque R.drawable.newImage se refiere a un número entero. Por lo que podría hacer:

int pic = R.drawable.newImage; 
lay.setBackgroundResource(pic); 

Answer 3

probar esto por Xamarin.Android (multiplataforma) -

RelativeLayout relativeLayout = new RelativeLayout (this); 

O

RelativeLayout relativeLayout = (RelativeLayout)FindViewById (Resource.Id.relativeLayout); 

Y

relativeLayout.SetBackgroundDrawable (Resources.GetDrawable (Resource.Drawable.imageName)); 

Answer 4

En el onCreate función:

RelativeLayout baseLayout = (RelativeLayout) this.findViewById(R.id.the_layout_id); 

Drawable drawable = loadImageFromAsset(); 

if(drawable != null){ 
    baseLayout.setBackground(drawable); 
    Log.d("TheActivity", "Setting the background"); 
} 

El método imagen de carga:

public Drawable loadImageFromAsset() { 

    Drawable drawable; 

    // load image 
    try { 

     // get input stream 
     InputStream ims = getAssets().open("images/test.9.png"); 

     //Note: Images can be in hierarical 

     // load image as Drawable 
     drawable = Drawable.createFromStream(ims, null); 

    } 
    catch(IOException ex) { 
     Log.d("LoadingImage", "Error reading the image"); 
     return null; 
    } 

    return drawable; 
} 

El método abierto:

> public final InputStream open (String fileName, int accessMode) 
> 
> Added in API level 1 Open an asset using an explicit access mode, 
> returning an InputStream to read its contents. This provides access to 
> files that have been bundled with an application as assets -- that is, 
> files placed in to the "assets" directory. 
> 
> fileName --- The name of the asset to open. This name can be hierarchical. 
> 
> accessMode --- Desired access mode for retrieving the data. 
> 
> Throws IOException