Develop Reference

The picture is not being shown when clicked on addImage button. What is missing in the code?

I am trying to add Image from Gallery to show up in my app. But it is not showing after I select the image from the gallery. It is not showing any error and runs successfully on my device.
private static int RESULT_LOAD_IMAGE=1;
public void addImage(View view){
Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, RESULT_LOAD_IMAGE);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if((requestCode == RESULT_LOAD_IMAGE) && (resultCode == RESULT_OK) && (null !=data)){
Uri selectedImage = data.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
ImageView imageView = (ImageView) findViewById(R.id.memeImage);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
}
}

try this with uri
imageView.setImageUri(selectedImage )

Android fragment disappear when return from startactivityforresult

I have an android predefined navigation drawer activity named as MainActivity.
From that on addUser button click AddUserFragment is showed. There is a button addImage when i click on that it startAnActivityForResult. And from gallery when i pick the image instead of returning to AddUserFragment it take me back to MainActivity.
Thanks in advance!.

for pick image from fragment start intent in this way:
Intent galleryIntent = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(galleryIntent, 1);
and handle the result in this way:
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1) {
if (resultCode == Activity.RESULT_OK && null != data) {
Uri selectedImage = imageReturnedIntent.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(
selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
cursor.close();
Bitmap yourSelectedImage = BitmapFactory.decodeFile(filePath);
}
}
}
NOTE: do all command in fragment

Place a 2D image on the top of the background

I am working on the android application with following requirements
Take images from gallery and display it as background.
This is done as follows:
btn_select.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View view) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,"SelectPicture"),PICK_IMAGE);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == requestCode && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
imageView.setImageURI(Uri.parse(picturePath));
cursor.close();
}
2.Place a 2D iamge on the top of the background image.
3.Reposition the image by dragging
4.Scale the image.
Anyone please suggest the ways to complete steps 2,3 and 4.
Thanks in Advance!

i need to access images from gallery and then access the pixels of the image for further processing in android

this is the code i'm using currently,the code only displays the image from gallery. but i want to access the pixels of the image.i am confused exactly where the image data is stored in the code as in which variable.
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button buttonLoadImage = (Button) findViewById(R.id.buttonLoadPicture);
buttonLoadImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
Intent i = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
ImageView imageView = (ImageView) findViewById(R.id.imgView);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
}
}
}

Please refer this Answer on SO, here is described to get Pixels, you should use:
Bitmap bm = BitmapFactory.decodeFile(picturePath);
and then :
bm.getPixel(x,y);// will return an int that corresponds to an int in the Color class, such as Color.BLACK or Color.WHITE.
Hope this may help you

How to have the option of having a user add an image in android

I am developing an android application for the first time and I was wondering how can I have a option of having the user upload an image. Like for example, in a contact manager the user has the option of uploading an image of a contact. I was wondering how can I do that in my android application. Any help would be appreciated.

You can start from scratch..
1)Take a look at INTENT
Android Intent
Then take a look at this blogpost
Image Upload
Hope this helps you

In this one you want to click the image view to get image from sd card.. If you want to change to button then replace the listener from image to button.
int RESULT_LOAD_IMAGE = 1;
image.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
}
});
getting image from sd card:
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK
&& null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
image.setImageBitmap(BitmapFactory.decodeFile(picturePath));
}
}