get Optimal Preview Size with target height - Android Camera

Android examples for Camera:Camera Preview

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  2. Android
  3. Camera
  4. Camera Preview

Description

get Optimal Preview Size with target height

Demo Code


//package com.java2s;

import android.hardware.Camera;

import java.util.List;

public class Main {

    public static Camera.Size getOptimalPreviewSize(
            List<Camera.Size> sizes, int targetHeight) {
        final double MIN_ASPECT_RATIO = 1.0;
        final double MAX_ASPECT_RATIO = 1.5;
        Camera.Size optimalSize = null;//  w w w . j  av  a  2 s . c  o  m
        double minDiff = Double.MAX_VALUE;
        for (Camera.Size size : sizes) {
            double ratio = (double) size.width / size.height;
            if (ratio <= MIN_ASPECT_RATIO || ratio > MAX_ASPECT_RATIO)
                continue;
            if (Math.abs(size.height - targetHeight) < minDiff) {
                optimalSize = size;
                minDiff = Math.abs(size.height - targetHeight);
            }
        }
        if (optimalSize == null) {
            minDiff = Double.MAX_VALUE;
            for (Camera.Size size : sizes) {
                if (Math.abs(size.height - targetHeight) < minDiff) {
                    optimalSize = size;
                    minDiff = Math.abs(size.height - targetHeight);
                }
            }
        }
        return optimalSize;
    }
}

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