获取图像从相机到ImageView的机器人 [英] Get Image from camera into ImageView Android

问题描述

下面code能很好地得到相机拍摄的照片的缩略图。我想获得完整的图像，而不是缩略图。我有一个三星Galaxy Nexus的

 私有静态最终诠释CAMERA_PIC_REQUEST = 1111;

私人ImageView的mImage;

    公共无效的onCreate（包savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.activity_my_camera）;
        mImage =（ImageView的）findViewById（R.id.imageView1）;
        意向意图=新的意图（android.provider.MediaStore.ACTION_IM​​AGE_CAPTURE）;
        startActivityForResult（意向，CAMERA_PIC_REQUEST）;
    }

    保护无效onActivityResult（INT申请code，INT结果code，意图数据）{
        如果（要求code == CAMERA_PIC_REQUEST）{
            。位图的缩略图=（位图）data.getExtras（）获得（数据）;
            mImage.setImageBitmap（缩略图）;
            ByteArrayOutputStream字节=新ByteArrayOutputStream（）;
            thumbnail.com preSS（Bitmap.Com pressFormat.JPEG，100个字节）;
            档案文件=新的文件（Environment.getExternalStorageDirectory（）+文件分割符+image.jpg文件）;
            尝试 {
                file.createNewFile（）;
                FileOutputStream中FO =新的FileOutputStream（文件）;
                fo.write（bytes.toByteArray（））;
                fo.close（）;
            }赶上（IOException异常E）{
                // TODO自动生成的catch块
                e.printStackTrace（）;
            }
        }
    }
 

解决方案

要得到你需要先将其保存到文件，然后提取它是从它的位图一个全尺寸的画面，做到这一点：

 意向意图=新的意图（android.media.action.IMAGE_CAPTURE）;
 档案文件=新的文件（Environment.getExternalStorageDirectory（）+文件分割符+image.jpg文件）;
 intent.putExtra（MediaStore.EXTRA_OUTPUT，Uri.fromFile（文件））;
 startActivityForResult（意向，CAPTURE_NEW_PICTURE）;
 

然后在 onActivityResult ：

 文件文件=新的文件（Environment.getExternalStorageDirectory（）+文件分割符+image.jpg文件）;
 mImage =（ImageView的）findViewById（R.id.imageView1）;
 mImage.setImageBitmap（德codeSampledBitmapFromFile（file.getAbsolutePath（），500，250））;
 

在德codeSampledBitmapFromFile ：

 公共静态位图德codeSampledBitmapFromFile（字符串路径，
        INT reqWidth，诠释reqHeight）{//最好的质量MATCH

    //第一代code与inJustDe codeBounds = true来检查尺寸
    最后BitmapFactory.Options选项=新BitmapFactory.Options（）;
    options.inJustDe codeBounds = TRUE;
    BitmapFactory.de codeFILE（路径选择）;

    //计算inSampleSize
        //原始高度和宽度的图像
        最终诠释身高= options.outHeight;
        最终诠释宽度= options.outWidth;
        options.in preferredConfig = Bitmap.Config.RGB_565;
        INT inSampleSize = 1;

        如果（高度＆GT; reqHeight）{
            inSampleSize = Math.round（（浮动）的高度/（浮点）reqHeight）;
        }

        INT expectedWidth =宽度/ inSampleSize;

        如果（expectedWidth＆GT; reqWidth）{
            //if(Math.round((float)width /（浮点）reqWidth）＆GT; inSampleSize）//如果大SampSize ..
            inSampleSize = Math.round（（浮点）宽/（浮点）reqWidth）;
        }


    options.inSampleSize = inSampleSize;

    与inSampleSize集//德code位图
    options.inJustDe codeBounds = FALSE;

    返回BitmapFactory.de codeFILE（路径选择）;
  }
 

您可以用数字（500，在这种情况下，250）起到改变位图的品质的ImageView 。

The following code works well to get the thumbnail of a picture taken from the camera. I want to get the full image, not just the thumbnail. I have a Samsung Galaxy Nexus

private static final int CAMERA_PIC_REQUEST = 1111;

private ImageView mImage;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_my_camera);
        mImage = (ImageView) findViewById(R.id.imageView1);
        Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(intent, CAMERA_PIC_REQUEST);
    }

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == CAMERA_PIC_REQUEST) {
            Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
            mImage.setImageBitmap(thumbnail);
            ByteArrayOutputStream bytes = new ByteArrayOutputStream();
            thumbnail.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
            File file = new File(Environment.getExternalStorageDirectory()+File.separator + "image.jpg");
            try {
                file.createNewFile();
                FileOutputStream fo = new FileOutputStream(file);
                fo.write(bytes.toByteArray());
                fo.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }

解决方案

To get a full size picture you need to first save it to file and then extract it's bitmap from it, do this:

 Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
 File file = new File(Environment.getExternalStorageDirectory()+File.separator + "image.jpg");
 intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(file));
 startActivityForResult(intent, CAPTURE_NEW_PICTURE);

Then in onActivityResult:

 File file = new File(Environment.getExternalStorageDirectory()+File.separator + "image.jpg");
 mImage = (ImageView) findViewById(R.id.imageView1);
 mImage.setImageBitmap(decodeSampledBitmapFromFile(file.getAbsolutePath(), 500, 250));

When decodeSampledBitmapFromFile:

    public static Bitmap decodeSampledBitmapFromFile(String path,
        int reqWidth, int reqHeight) { // BEST QUALITY MATCH

    // First decode with inJustDecodeBounds=true to check dimensions
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeFile(path, options);

    // Calculate inSampleSize
        // Raw height and width of image
        final int height = options.outHeight;
        final int width = options.outWidth;
        options.inPreferredConfig = Bitmap.Config.RGB_565;
        int inSampleSize = 1;

        if (height > reqHeight) {
            inSampleSize = Math.round((float)height / (float)reqHeight);
        }

        int expectedWidth = width / inSampleSize;

        if (expectedWidth > reqWidth) {
            //if(Math.round((float)width / (float)reqWidth) > inSampleSize) // If bigger SampSize..
            inSampleSize = Math.round((float)width / (float)reqWidth);
        }


    options.inSampleSize = inSampleSize;

    // Decode bitmap with inSampleSize set
    options.inJustDecodeBounds = false;

    return BitmapFactory.decodeFile(path, options);
  }

You can play with the numbers (500 and 250 in this case) to change the quality of the bitmap for the ImageView.

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