android - Camera2 with a SurfaceView -

i'm trying new camera2 working simple surfaceview , i'm having problems live preview. on devices image stretched out of proportions while looking fine on others.

i've setup surfaceview programatically adjust fit size of preview stream size.

on nexus 5 looks fine 1 samsung devices way off. samsung devices have black border on right part of preview.

is not possible work surfaceview or time switch textureview ?

yes, possible. note surfaceview , associated surface 2 different things, , each can/must assigned size.

the surface actual memory buffer hold output of camera, , setting size dictates size of actual image each frame. each format available camera, there small set of possible (exact) sizes can make buffer.

the surfaceview displaying of image when available, , can size in layout. stretch underlying associated image data fit whatever layout size is, note display size different data's size- android resize image data display automatically. causing stretching.

for example, can make surfaceview-based autofit view similar camera2basic's autofittextureview follows (this use):

import android.content.context; import android.util.attributeset; import android.view.surfaceview;  public class autofitsurfaceview extends surfaceview {      private int mratiowidth = 0;     private int mratioheight = 0;      public autofitsurfaceview(context context) {         this(context, null);     }      public autofitsurfaceview(context context, attributeset attrs) {         this(context, attrs, 0);     }      public autofitsurfaceview(context context, attributeset attrs, int defstyle) {         super(context, attrs, defstyle);     }      /**      * sets aspect ratio view. size of view measured based on ratio      * calculated parameters. note actual sizes of parameters don't matter,      * is, calling setaspectratio(2, 3) , setaspectratio(4, 6) make same result.      *      * @param width  relative horizontal size      * @param height relative vertical size      */     public void setaspectratio(int width, int height) {         if (width < 0 || height < 0) {             throw new illegalargumentexception("size cannot negative.");         }         mratiowidth = width;         mratioheight = height;         requestlayout();     }      @override     protected void onmeasure(int widthmeasurespec, int heightmeasurespec) {         super.onmeasure(widthmeasurespec, heightmeasurespec);         int width = measurespec.getsize(widthmeasurespec);         int height = measurespec.getsize(heightmeasurespec);         if (0 == mratiowidth || 0 == mratioheight) {             setmeasureddimension(width, height);         } else {             if (width < height * mratiowidth / mratioheight) {                 setmeasureddimension(width, width * mratioheight / mratiowidth);             } else {                 setmeasureddimension(height * mratiowidth / mratioheight, height);             }         }     } }