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POAndroid: Generate bitmap of a view without drawing
 

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  1. POAndroid: Generate bitmap of a view without drawing
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    <p>We have a problem to generate a bitmap from a particular view. The restriction is that it can not be rendered view (drawing). Does anyone have any tips how to solve this?</p> <p>The documentation of the class view (<a href="http://developer.android.com/reference/android/view/View.html" rel="nofollow">http://developer.android.com/reference/android/view/View.html</a>) has some explanation of the steps used by Android to render a View. In the case, we would get in step "layout", but not in the "drawing". Anyone who has any idea, could show an example?</p> <p>My code is generating the exception: error -> width and height must be> 0</p> <pre><code>... public static Bitmap loadBitmapFromView(View v) { Bitmap b = null; try { b = Bitmap.createBitmap( v.getWidth(), v.getHeight(), Bitmap.Config.ARGB_8888); Canvas c = new Canvas(b); v.measure(v.getWidth(), v.getHeight()); v.layout(0, 0, v.getWidth(), v.getHeight()); v.draw(c); } catch (Exception e) { Log.e(MainActivity.TAG, "error -&gt; "+e.getMessage()); } return b; } public void snap(View v) { LayoutInflater inflate = (LayoutInflater) getBaseContext() .getSystemService(LAYOUT_INFLATER_SERVICE); View view = new View(getBaseContext()); view = inflate.inflate(R.layout.list_item, null); Log.d(MainActivity.TAG, "getWidth -&gt; "+view.getWidth()); Log.d(MainActivity.TAG, "getHeight -&gt; "+view.getHeight()); Bitmap b = loadBitmapFromView(view); if (b != null) { LinearLayout mainLayout = (LinearLayout) findViewById(R.id.LinearLayout1); ImageView image = new ImageView(this); image.setImageBitmap(b); mainLayout.addView(image); } } </code></pre>
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    1. USDouglas Frari
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    1. COI really didn't understand what you want to achieve. But the view will not have a size before the `onMeasure` step. So, just inflate the view will not do the trick.
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      1. POAndroid: Generate bitmap of a view without drawing
      1. USThiago Moura
    2. COCan you generate a bitmap from the a view without drawing it? I would like to generate an image (Bitmap) to a view that has not been drawn on the screen. The idea is to generate multiple bitmap images and show only when needed.
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      1. POAndroid: Generate bitmap of a view without drawing
      1. USDouglas Frari
 

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