Question

我已将blob数据插入到sqlite中并从sqlite中检索到时间blob数据未在imageview上设置为位图。让msg无法加载。所以请帮我解决我的代码问题。以下是我的代码。

            bitmap = android.provider.MediaStore.Images.Media
             .getBitmap(cr, selectedImage);

            imageView.setImageBitmap(bitmap);


            ByteArrayOutputStream stream= new ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
            byte imginbyte[]=stream.toByteArray();
            byte temp[]=imginbyte;

            myDb.execSQL("INSERT INTO tableimage VALUES('"+temp+"');");
            Cursor c= myDb.rawQuery("SELECT * FROM tableimage", null);
            c.moveToLast();
            byte asd[]= c.getBlob(c.getColumnIndex("imgpath"));
            byte img[]=null;

          //  BitmapFactory.decodeByteArray(asd, 0, asd.length);
            ImageView iv=(ImageView)findViewById(R.id.img2);
            ImageView iv1=(ImageView)findViewById(R.id.img3);

            iv.setImageBitmap( BitmapFactory.decodeByteArray(asd, 0, asd.length));
            iv1.setImageBitmap( BitmapFactory.decodeByteArray(asd, 0, asd.length));

Answer 1

试试这个

ByteArrayInputStream imageStreamFront = new ByteArrayInputStream(asd);

Bitmap bitFrontImage = BitmapFactory.decodeStream(imageStreamFront);

if(bitFrontImage!=null)
{
   iv.setImageBitmap(bitFrontImage, 40);
}

Answer 2

没有blob存储图像和retrive。与字符串数据库见下面的代码

YourGroup:LibraryProject:1.0-SNAPSHOT

blob数据未设置为imageview android

2 个答案: