Comment afficher un objet de classe Bitmap dans android sans utiliser XML

Question

J'essaie d'afficher un bitmap que j'ai créé dans et programme android, mais tous les tutoriels que je trouve impliquent soit Drawables ou XML afin de les afficher. Quelqu'un peut-il me montrer les étapes nécessaires pour afficher un bitmap dans le code?

Ce n'est pas l'intégralité du code, c'est juste la majorité, le reste est lié à faire fonctionner la caméra.

class Preview extends SurfaceView implements SurfaceHolder.Callback { 
private SurfaceHolder mHolder; 
private Camera mCamera; 
private Paint mPaint; 
private Drawable bitmap; 
private Bitmap currentprev; 
private ImageView mImageView; 

private Camera.PreviewCallback mPrevCallback = new Camera.PreviewCallback() 
{ 
     public void onPreviewFrame(byte[] data, Camera Cam) { 
       Log.d("CombineTestActivity", "Preview registered"); 
       Log.d("CombineTestActivity", "Data length = " 
         + data.length); 
       // currentprev = BitmapFactory.decodeByteArray(data, 0, 
       //  data.length); 
       currentprev = BitmapFactory.decodeResource(getResources(), 
        R.drawable.creature00); 
       if(currentprev == null) 
        Log.d("CombineTestActivity", "currentprev is null"); 
       if(mImageView == null) 
        Log.d("CombineTestActivity", "mImageView is null"); 
     //Code fails here, gives null pointer exception 
       mImageView.setImageBitmap(currentprev); 
       Log.d("CombineTestActivity", "Preview Finished"); 
     } 
}; 

private OnTouchListener mCorkyListener = new OnTouchListener() { 
     public boolean onTouch(View v, MotionEvent me) { 
       Log.d("CombineTestActivity", "touch registered"); 
       mCamera.takePicture(null, null, mPicCallback); 
       return false; 
     } 
}; 

private Camera.PictureCallback mPicCallback = new Camera.PictureCallback() { 
     public void onPictureTaken(byte[] data, Camera mCamera) { 

       Log.d("CombineTestActivity", "picture method run"); 
     } 
}; 

Preview(Context context) { 
    super(context); 

    // Install a SurfaceHolder.Callback so we get notified when the 
    // underlying surface is created and destroyed. 
    mImageView = (ImageView)findViewById(R.id.imageview); 
    mHolder = getHolder(); 
    mHolder.addCallback(this); 
    mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
    mPaint = new Paint(); 
    bitmap = context.getResources().getDrawable(
     R.drawable.creature00); 
    if(mImageView == null) 
     Log.d("CombineTestActivity", "mImageView is null"); 

this.setOnTouchListener(mCorkyListener); 

} 

Answer 1

Bitmap bm; // some bitmap you have loaded. 
ImageView iv; // the image view you want to display the bitmap in 

iv.setImageBitmap(bm); 

Answer 2

Vous devez utiliser le BitmapFactory pour créer le Bitmap et le charger dans le ImageView. Comme ceci:

Bitmap image = BitmapFactory.decodeResource(getResources(), R.drawable.my_image); 
ImageView view = (ImageView)findViewById(R.id.my_image_view); 
view.setImageBitmap(image);