DisplayMetrics metrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(metrics); int height = metrics.heightPixels; int width = metrics.widthPixels; Bitmap bmap2 = BitmapFactory.decodeResource(getResources(), R.drawable.superman); Bitmap bitmap = Bitmap.createScaledBitmap(bmap2, width, height, true); WallpaperManager wallpaperManager = WallpaperManager.getInstance(getApplicationContext()); try { wallpaperManager.setBitmap(bitmap); } catch (IOException e) { e.printStackTrace(); }
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