Question

我需要拍照并进行编辑。我使用原始相机并返回大尺寸图像，所以当我尝试创建新模板图像进行编辑时，应用程序将因为outOfMemoryError而更加接近。是否有任何方法可以帮助我在将图像加载到我的应用程序之前调整图像大小？

我的代码用相机拍照：

void loadImageFromCamera(){
    Intent takePicture = new Intent("android.media.action.IMAGE_CAPTURE");
    File photo = null;
    try{
        // place where to store camera taken picture
        photo = this.createTemporaryFile("picture", ".jpg");
        photo.delete();
    } catch(Exception e){

    }
    mImageUri = Uri.fromFile(photo);
    takePicture.putExtra(MediaStore.EXTRA_OUTPUT, mImageUri);
    startActivityForResult(takePicture, 0);
}
private File createTemporaryFile(String part, String ext) throws Exception{
    File tempDir = Environment.getExternalStorageDirectory();
    tempDir = new File(tempDir.getAbsolutePath() + "/.temp/");
    if(!tempDir.exists()){
        tempDir.mkdir();
    }
    return File.createTempFile(part, ext, tempDir);
}
public void grabImage(){
    this.getContentResolver().notifyChange(mImageUri, null);
    ContentResolver cr = this.getContentResolver();
    try {
        originImage = android.provider.MediaStore.Images.Media.getBitmap(cr, mImageUri);
    }catch (Exception e){

    }

}

Answer 1

是的，您可以调整图像大小使用以下方法调整图像大小

public static Bitmap getResizedBitmap(Bitmap image, int newHeight, int newWidth) {
    int width = image.getWidth();
    int height = image.getHeight();
    float scaleWidth = ((float) newWidth) / width;
    float scaleHeight = ((float) newHeight) / height;
    // create a matrix for the manipulation
    Matrix matrix = new Matrix();
    // resize the bit map
    matrix.postScale(scaleWidth, scaleHeight);
    // recreate the new Bitmap
    Bitmap resizedBitmap = Bitmap.createBitmap(image, 0, 0, width, height,
            matrix, false);
    return resizedBitmap;
}

在相机中拍照并进行编辑

1 个答案: