在我当我捕捉图像从相机的Andr​​oid应用程序，我想重新大小它的尺寸。我成功了重新大小，当我把图像从画廊。但是，当我从相机捕获，我失败了。请帮忙

 如果（要求code == take_image和放大器;＆安培;结果code == RESULT_OK和放大器;＆安培;空=数据！）{
    。缩略图=（位图）data.getExtras（）获得（数据）;
    IMAGE2 = ME1;
    addattachmentsToListView（IMAGE2）;
}
 

下面是code，从SD卡调整图像：

 如果（要求code == UploadFile和放大器;＆安培;结果code == RESULT_OK和放大器;＆安培;！空=数据）{
    乌里selectedImage = data.getData（）;
    尝试 {

        位图图像=（德codeURI（selectedImage））;
        addattachmentsToListView（图像）;
        }赶上（FileNotFoundException异常E）{
        // TODO自动生成的catch块
        e.printStackTrace（）;
    }
}


私人位图德codeURI（URI selectedImage）抛出FileNotFoundException异常{
    BitmapFactory.Options O =新BitmapFactory.Options（）;
    o.inJustDe codeBounds = TRUE;
    BitmapFactory.de codeStream（
    。getContentResolver（）openInputStream（selectedImage），空，O）;

    最终诠释REQUIRED_SIZE = 200;

    INT width_tmp = o.outWidth，height_tmp = o.outHeight;
    int标= 1;
    而（真）{
        如果（width_tmp / 1.5安培; LT; REQUIRED_SIZE || height_tmp / 1.5安培; LT; REQUIRED_SIZE）{
            打破;
        }
        width_tmp / = 4;
        height_tmp / = 4;

        // width_tmp = 20;
        // height_tmp = 20;
        规模* = 2;
    }

    BitmapFactory.Options O2 =新BitmapFactory.Options（）;
    o2.inSampleSize =规模;
    返回BitmapFactory.de codeStream（
    getContentResolver（）openInputStream（selectedImage），空，O2）。
}
 

解决方案

在你的在previewFrame公共无效（byte []的数据，摄像头摄像头），你可以得到一个位图是这样的：

  BMP位= YUVtoBMP（数据，ImageFormat.NV21，YOUR_CAMERA_SIZE）;

公共位图YUVtoBMP（byte []的数据，INT格式，Camera.Size大小）
{
    ByteArrayOutputStream OUT =新ByteArrayOutputStream（）;
    YuvImage yuvImage =新YuvImage（数据，格式，size.width，size.height，NULL）;
    yuvImage.com pressToJpeg（新的矩形（0，0，size.width，size.height），50，出）;
    byte []的imageBytes = out.toByteArray（）;
    选项​​选项=新的选项（）;
    options.in preferQualityOverSpeed​​ = FALSE;
    位图图像= BitmapFactory.de codeByteArray（imageBytes，0，imageBytes.length，期权）;

    返回形象;
}
 

为了扩展位图，您可以：

 位图缩放= Bitmap.createScaledBitmap（BMP，NEW_WIDTH，NEW_HEIGHT，真正的）;
 

这仅仅是一个暗示：从这个开始，并尝试寻找优化，如果任何

In my android application when I capture image from camera, I want to re-size it's dimensions. I am successful to re-size, when I take image from gallery. But when I capture from camera, I failed. Please help

if (requestCode == take_image &&  resultCode == RESULT_OK && null != data) {
    thumbnail = (Bitmap) data.getExtras().get("data");  
    image2 = me1;
    addattachmentsToListView(image2);
}

Here is the code to resize image from sdcard:

if (requestCode == UploadFile && resultCode == RESULT_OK && null != data) {
    Uri selectedImage = data.getData();
    try {

        Bitmap image=(decodeUri(selectedImage));
        addattachmentsToListView(image);
        } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}


private Bitmap decodeUri(Uri selectedImage) throws FileNotFoundException {
    BitmapFactory.Options o = new BitmapFactory.Options();
    o.inJustDecodeBounds = true;
    BitmapFactory.decodeStream(
    getContentResolver().openInputStream(selectedImage), null, o);

    final int REQUIRED_SIZE = 200;

    int width_tmp = o.outWidth, height_tmp = o.outHeight;
    int scale = 1;
    while (true) {
        if (width_tmp / 1.5 < REQUIRED_SIZE || height_tmp / 1.5 < REQUIRED_SIZE) {
            break;
        }
        width_tmp /= 4;
        height_tmp /= 4;

        //   width_tmp = 20;
        // height_tmp = 20;
        scale *= 2;
    }

    BitmapFactory.Options o2 = new BitmapFactory.Options();
    o2.inSampleSize = scale;
    return BitmapFactory.decodeStream(
    getContentResolver().openInputStream(selectedImage), null, o2);
}

In your public void onPreviewFrame(byte[] data, Camera camera), you could get a bitmap in this way:

Bitmap bmp = YUVtoBMP(data, ImageFormat.NV21, YOUR_CAMERA_SIZE);

public Bitmap YUVtoBMP(byte[] data, int format, Camera.Size size)
{
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    YuvImage yuvImage = new YuvImage(data, format, size.width, size.height, null);
    yuvImage.compressToJpeg(new Rect(0, 0, size.width, size.height), 50, out);
    byte[] imageBytes = out.toByteArray();
    Options options = new Options();
    options.inPreferQualityOverSpeed = false;
    Bitmap image = BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.length, options);

    return image;
}

In order to scale a bitmap, you can:

Bitmap scaled = Bitmap.createScaledBitmap(bmp, NEW_WIDTH, NEW_HEIGHT, true);

This is just a hint: start from this and try to look for optimization if any.