保存相机preVIEW与叠加图像 [英] Save cameraPreview with overlay image

问题描述

我使用谷歌的相机preVIEW样品演示。在这里，我有相机preVIEW，并在摄像头preVIEW的叠加图像。

当我拍摄照片时，只有相机preVIEW是保住了，但我需要的叠加图像将超过相机preVIEW也得救了。

这是我的方式保存相机preVIEW的照片，但我需要知道什么是对覆盖展位图像的最佳方式，并将它们保存到一个。

 公共无效onPictureTaken（字节[]数据，相机摄像头）{    。字符串photoPath = Environment.getExternalStorageDirectory（）getAbsolutePath（）+/ miFoto.jpg;    尝试{
        FOS的FileOutputStream =新的FileOutputStream（photoPath）;
        fos.write（数据）;
        fos.close（）;
    }赶上（IOException异常五）{
        Toast.makeText（这一点，产品图未保存，Toast.LENGTH_SHORT）.show（）;
        返回;
    }
    Toast.makeText（这一点，产品图保存在：+ photoPath，Toast.LENGTH_SHORT）.show（）;    camera.start preVIEW（）;
}
 

解决方案

我终于做到了这种方式：

 公共无效onPictureTaken（字节[]数据，相机摄像头）{    位图cameraBitmap = BitmapFactory.de codeByteArray的（数据，0，data.length）;
    位图cameraScaledBitmap = Bitmap.createScaledBitmap（cameraBitmap，1280，720，真正的）;
    INT妇女参与发展= cameraScaledBitmap.getWidth（）;
    INT HGT = cameraScaledBitmap.getHeight（）;
    位图newImage = Bitmap.createBitmap（WID，HGT，Bitmap.Config.ARGB_8888）;
    位图overlayScaledBitmap = Bitmap.createScaledBitmap（overlayBit​​map，妇女参与发展，HGT，真正的）;
    帆布帆布=新的Canvas（newImage）;
    canvas.drawBitmap（cameraScaledBitmap，0，0，NULL）;
    canvas.drawBitmap（overlayScaledBitmap，0，0，NULL）;    文件storagePath =新的文件（Environment.getExternalStorageDirectory（）getAbsolutePath（））;
    storagePath.mkdirs（）;
    串finalName = Long.toString（System.currentTimeMillis的（））;
    文件MYIMAGE =新的文件（storagePath，finalName +.JPG）;    。字符串photoPath = Environment.getExternalStorageDirectory（）getAbsolutePath（）+/+ finalName +.JPG;    尝试{
        FOS的FileOutputStream =新的FileOutputStream（MYIMAGE）;
        newImage.com preSS（Bitmap.Com pressFormat.JPEG，80，FOS）;
        fos.close（）;
    }赶上（IOException异常五）{
        Toast.makeText（这一点，产品图未保存，Toast.LENGTH_SHORT）.show（）;
        返回;
    }
    Toast.makeText（这一点，产品图保存在：+ photoPath，Toast.LENGTH_SHORT）.show（）;    camera.start preVIEW（）;
    newImage.recycle（）;
    newImage = NULL;
    cameraBitmap.recycle（）;
    cameraBitmap = NULL;
}
 

I'm using Google's CameraPreview sample demo. Here, I have the cameraPreview, and an overlayed image over cameraPreview.

When I take the photo, only the cameraPreview is saved, but I need the overlay image to be saved too over the cameraPreview.

This is the way I save cameraPreview's photo, but I need to know what would be the best way for overlaying booth images and save them into one.

public void onPictureTaken(byte[] data, Camera camera) {

    String photoPath = Environment.getExternalStorageDirectory().getAbsolutePath()+"/miFoto.jpg";

    try {
        FileOutputStream fos = new FileOutputStream(photoPath);
        fos.write(data);
        fos.close();
    } catch (IOException e) {
        Toast.makeText(this, "Pic not saved", Toast.LENGTH_SHORT).show();
        return;
    }


    Toast.makeText(this, "Pic saved in: " + photoPath, Toast.LENGTH_SHORT).show();

    camera.startPreview();
}

解决方案

I finally made it this way:

public void onPictureTaken(byte[] data, Camera camera) {

    Bitmap cameraBitmap = BitmapFactory.decodeByteArray(data, 0, data.length);
    Bitmap cameraScaledBitmap = Bitmap.createScaledBitmap(cameraBitmap, 1280, 720, true);
    int wid = cameraScaledBitmap.getWidth();
    int hgt = cameraScaledBitmap.getHeight();
    Bitmap newImage = Bitmap.createBitmap(wid, hgt, Bitmap.Config.ARGB_8888);
    Bitmap overlayScaledBitmap = Bitmap.createScaledBitmap(overlayBitmap, wid, hgt, true);
    Canvas canvas = new Canvas(newImage);
    canvas.drawBitmap(cameraScaledBitmap , 0, 0, null);
    canvas.drawBitmap(overlayScaledBitmap , 0, 0, null);

    File storagePath = new File(Environment.getExternalStorageDirectory().getAbsolutePath());
    storagePath.mkdirs();
    String finalName = Long.toString(System.currentTimeMillis());
    File myImage = new File(storagePath, finalName + ".jpg");

    String photoPath = Environment.getExternalStorageDirectory().getAbsolutePath() +"/" + finalName + ".jpg";

    try {
        FileOutputStream fos = new FileOutputStream(myImage);
        newImage.compress(Bitmap.CompressFormat.JPEG, 80, fos);
        fos.close();
    } catch (IOException e) {
        Toast.makeText(this, "Pic not saved", Toast.LENGTH_SHORT).show();
        return;
    }
    Toast.makeText(this, "Pic saved in: " + photoPath, Toast.LENGTH_SHORT).show();

    camera.startPreview();
    newImage.recycle();
    newImage = null;
    cameraBitmap.recycle();
    cameraBitmap = null;
}

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