Develop Reference

How to pass an ImageView which is selected from the internal Storage between Activities

I uploaded an Image from my Internal Storage and want now to pass this
selected Image to a new Activity. I do not pass an Image from the
drawable. I pass an Image which I selected from my Internal Storage. I
tried to pass this Image via the R.id
ImageView imageView_selectedImage;
imageView_selectedImage =(ImageView)findViewById(R.id.imageView_selectedImage);
Button button_goToNextActivity = (Button) findViewById(R.id.button_goToNextActivity);
button_goToNextActivity.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(this, nextActivity.class);
intent.putExtra("resId", R.id.selectedImage);
startActivity(intent);
}
}

imageView.invalidate();
BitmapDrawable drawable = (BitmapDrawable) imageView.getDrawable();
Bitmap bitmap = drawable.getBitmap();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 90, baos);
byte[] b = baos.toByteArray();
String imageEncoded = Base64.encodeToString(b, Base64.DEFAULT);
Then pass the byte array to the next activity.
Intent intent = new Intent(this, nextActivity.class);
intent.putExtra("image", imageEncoded);
startActivity(intent);
Get the byte from the intent second activity.
Bitmap bmp;
byte[] byteArray = getIntent().getByteArrayExtra("image");
bmp = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
Set the bitmap to the imageview of the second activty
imageview.setImageBitmap(bmp);

Don't pass imageview to next activity.
You can pass uri of Image which is selected from gallery.\
Get Uri for selected image in onActivityResult method like below code:
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == SELECT_GALLERY) {
if (data != null) {
imageSelectedFromGallery(data);
pictureUri=data.getData();
imageView_selectedImage.setImageURI(pictureUri);
}
}
}
Note**: make pictureUri instance variable instead of local variable.
Pass Image Uri to next Activity like below code:
Intent intent=new Intent(Main2Activity.this,NextActivity.class);
intent.putExtra("pictureUri",pictureUri);
startActivity(intent);
Get Image Uri in Next Activity and set into imageView :
ImageView imageview=findViewById(R.id.imageview);
Bundle bundle=getIntent().getExtras();
if(bundle!=null) {
String pictureUri = bundle.getString("pictureUri");
imageview.setImageURI( Uri.parse(pictureUri));
}
I hope its work for you.

How do I pass image to another activity from Listview

I got this image from the server. The image is not in the project resource folder. The text is working correctly, but the image is not showing in another activity.
MyAdapter objAdapter1;
listView.setOnItemClickListener(new OnItemClickListener()
{
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
Item item = (Item) objAdapter1.getItem(position);
Intent intent = new Intent(ChooseDriver.this, DriverDetail.class);
intent.putExtra(ID, item.getId());
intent.putExtra(NAME, item.getName().toString());
intent.putExtra(IMAGE, item.getImage().toString());
image.buildDrawingCache();
Bitmap image= image.getDrawingCache();
Bundle extras = new Bundle();
extras.putParcelable("imagebitmap", image);
intent.putExtras(extras);
startActivity(intent);
}
});

try this:
Main Activity:
ByteArrayOutputStream stream = new ByteArrayOutputStream();
mItem.getIcon().compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
newIntent.putExtra("image", byteArray);
Second Activity:
byte[] byteArray = getIntent().getExtras().getByteArray("image");
Bitmap bmp = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
img.setImageBitmap(bmp);

In FirstActivity,
Intent intent = new Intent(this, SecondActivity.class);
intent.putExtra("YourBitmap", bitmap);
and in SecondActivity,
Intent intent = getIntent();
Bitmap bitmap = (Bitmap)intent.getParcelableExtra("YourBitmap");
May it help you.

Passed Bitmap is Not Drawing on Another Activity

I'm trying to draw a Bitmap on a ImageView, but it is not showing... I created the Bitmap and stored on a Intent Extra, but on the new activity I'm not able to draw it on the ImageView.
Here is my code, calling the new activity:
public void onClickShare(View v) {
Intent myIntent = new Intent(this, Share.class);
Bitmap b = Bitmap.createBitmap(v.getWidth(), v.getHeight(), Bitmap.Config.ARGB_8888);
myIntent.putExtra("createdImg", b);
startActivity(myIntent);
}
And on the new activity:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.share);
backgroundImg = (ImageView)findViewById(R.id.imageView1);
Intent myIntent = getIntent();
Bitmap bitmap = (Bitmap) myIntent.getParcelableExtra("createdImg");
backgroundImg.setImageBitmap(bitmap);
}
What am I missing? Thanks!

Try to send it as ByteArray and decode it in the receiving activity.
ByteArrayOutputStream stream = new ByteArrayOutputStream();
b.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
Intent in1 = new Intent(this, Share.class);
in1.putExtra("image",byteArray);
in the second activity
byte[] byteArray = getIntent().getByteArrayExtra("image");
Bitmap bmp = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);

You can also try like this
Bundle bundle = new Bundle();
bundle.putParcelable("createdImg", b);
intent.putExtras(bundle);
and in next activity
Bundle bundle = this.getIntent().getExtras();
Bitmap bmap = bundle.getParcelable("createdImg");
as given in this tutorial http://android-er.blogspot.com/2011/10/pass-bitmap-between-activities.html

I took it a little bit from every answer, plus other researches, and I came up with the code below that worked nicely:
Calling the new activity:
public void onClickShare(View v) {
Intent myIntent = new Intent(this, Share.class);
// create bitmap screen capture
Bitmap bitmap;
View v1 = v.getRootView();
v1.setDrawingCacheEnabled(true);
bitmap = Bitmap.createBitmap(v1.getDrawingCache());
// create a new one with the area I want
Bitmap bmpLast = Bitmap.createBitmap(bitmap, 25, 185, 430, 520);
v1.setDrawingCacheEnabled(false);
//create an empty bitmap with the size I need
Bitmap bmOverlay = Bitmap.createBitmap(480, 760, Bitmap.Config.ARGB_8888);
//draw the content on the bitmap
Canvas c = new Canvas(bmOverlay);
c.drawBitmap(bmpLast, 0, 0, null);
//compress the bitmap to send to other activity
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bmpLast.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
//store compressed bitmap
myIntent.putExtra("createdImg", byteArray);
startActivity(myIntent);
}
And on the new activity:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.share);
//decompress the bitmap
byte[] byteArray = getIntent().getByteArrayExtra("createdImg");
Bitmap bmp = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
//set the imageview with the bitmap
backgroundImg = (ImageView)findViewById(R.id.imageView1);
backgroundImg.setImageDrawable(new BitmapDrawable(getResources(), bmp));
}
Thanks everyone! =)

Image from SD card to byte[]

how can i get the byte[] of an image from android emulator SD card?
here's my current code:
File f = new File("/mnt/sdcard/test.jpg");
ImageView mImgView1 = (ImageView)findViewById(R.id.iv);
Bitmap bmp = BitmapFactory.decodeFile(f.getAbsolutePath());
What i want is the byte format of the image how can i do this?

Create a ByteArrayOutputStream then call compress() method of Bitmap so the contents of bitmap will be passed in ByteArrayOutputStream and converted to byte[]
public byte[] bitmapToByteArray(Bitmap b)
{
ByteArrayOutputStream stream = new ByteArrayOutputStream();
b.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
return byteArray;
}
To apply,
Bitmap bmp = BitmapFactory.decodeFile(file.getAbsolutePath());
byte[] bitmapBytes = bitmapToByteArray(bmp);

You can convert Bitmap to byte[] like :
String imageInSD = Environment.getExternalStorageDirectory().getAbsolutePath() +"/Folder/" + filename + ".PNG";
Bitmap bmp = BitmapFactory.decodeFile(imageInSD);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();

How to convert ImageView image to byte code by using Base64 encode?

I am working with an image. In my application I have displayed an image from drawable and set that drawable image to ImageView. When I click on a button I would like to encode the ImageView image to byte code by using Base64.
I have implemented code as follows:
((ImageView)findViewById(R.id.imageView1)).setImageResource(R.drawable.person);
((Button)findViewById(R.id.button1)).setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
((TextView)findViewById(R.id.textView1)).setText("Get((ImageView)findViewById(R.id.imageView1)) image Base64.encode() here");
}
});
How can I get the encoded imageView1 image to byte code?
Can anybody please help me.

Try this...
Bitmap bitmap=BitmapFactory.decodeResource(getResources(), R.drawable.images);
ByteArrayOutputStream stream=new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 90, stream);
byte[] image=stream.toByteArray();
System.out.println("byte array:"+image);
String img_str = Base64.encodeToString(image, 0);
System.out.println("string:"+img_str);
Now set that string to your Textview as
tv.setText(img_str);

Look at this code,
Bitmap bMap = BitmapFactory.decodeResource(getResources(), R.drawable.person)
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bMap .compress(Bitmap.CompressFormat.PNG, 100, baos);
//bMap is the bitmap object
byte[] b = baos.toByteArray();
String encodedString = Base64.encodeToString(b, Base64.DEFAULT)

use this
public String encode(Bitmap icon) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
icon.compress(Bitmap.CompressFormat.PNG, 50, baos);
byte[] data = baos.toByteArray();
String test = Base64.encodeBytes(data);
return test;
}`