Question

在下面的代码中，我从SD卡获取图像，并通过意图发送图像，但是我想更改代码以发送图像的路径，而不是图像本身

  @Override
       protected void onActivityResult(int requestCode, int resultCode, Intent data) {

           super.onActivityResult(requestCode, resultCode, data);

            if (requestCode == 1 && resultCode == RESULT_OK && data != null && data.getData() != null) {

                //file name
                filePath = data.getData();
                try {
                //  Bundle extras2 = data.getExtras();
                    bitmap  = MediaStore.Images.Media.getBitmap(getContentResolver(), filePath);
                    ByteArrayOutputStream stream = new ByteArrayOutputStream();               
                   byte imageInByte[] = stream.toByteArray();                    
                  Intent i = new Intent(this, AddImage.class);
                  i.putExtra("image", imageInByte);
                  startActivity(i);
                } catch (IOException e) {
                    e.printStackTrace();     }   }   }    




and here I am receiving the image



     byte[] byteArray = getIntent().getByteArrayExtra("image");
       //      encodedImage = Base64.encodeToString(byteArray, Base64);
            bmp = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
          ImageView imageview = (ImageView) findViewById(R.id.imageView);
            imageview.setImageBitmap(bmp);

我也试过了，但它没有用：

 protected void onActivityResult(int requestCode, int resultCode, Intent data) {

           super.onActivityResult(requestCode, resultCode, data);

            if (requestCode == 1 && resultCode == RESULT_OK && data != null && data.getData() != null) {

                filePath = data.getData();

                  Intent i = new Intent(this, AddImage.class);
                  i.putExtra("imagepath", filePath);
                  startActivity(i);
                } catch (IOException e) {
                    e.printStackTrace();     }   }}

但是如何接收uri路径

geturi().getintent()？然后获取图像

编辑 -

我在这里遇到错误nullpointerexception uri string

    img.setImageURI(Uri.parse(imagePath ));

这是代码

  String imagePath = getIntent().getStringExtra("imagePath");
            ImageView img=(ImageView) findViewById(R.id.imageView);
            img.setImageURI(Uri.parse(imagePath ));

            Bitmap bitmap = ((BitmapDrawable)img.getDrawable()).getBitmap();
            Bitmap out = Bitmap.createScaledBitmap(bitmap, 500, 500, false); 
            // bitmap is the image 
            ByteArrayOutputStream stream = new ByteArrayOutputStream();
           out.compress(Bitmap.CompressFormat.JPEG, 60, stream); 
           out.recycle();

/*       byte[] byteArray = getIntent().getByteArrayExtra("image");

           //      encodedImage = Base64.encodeToString(byteArray, Base64);
//              bmp = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);*/
           //   ImageView imageview = (ImageView) findViewById(R.id.imageView);
                img.setImageBitmap(out);

我发送这样的意图

filePath = data.getData（）; 意图i =新意图（这， AddImage.class）; i.putExtra（＆＃34; imagepath＆＃34;，filePath）; startActivity（ⅰ）;

Answer 1

AddImage活动

   onCreate(...)
   {
        ....
        String imagePath = getIntent().getStringExtra("imagePath");
        ImageView img=(ImageView) findViewById(R.id.imageView1);
        img.setImageURI(Uri.parse(imagePath ));

        Bitmap bitmap = ((BitmapDrawable)img.getDrawable()).getBitmap();
        Bitmap out = Bitmap.createScaledBitmap(bitmap, 500, 500, false); 
        // bitmap is the image 
        ByteArrayOutputStream stream = new ByteArrayOutputStream();
        out.compress(Bitmap.CompressFormat.JPEG, 60, stream);
        img.setImageBitmap(out); 
        bitmap.recycle();
        ....
   }

如何从onactivityresult uri路径发送到另一个活动并将其更改为图像

1 个答案: