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What is the callback or return function in android studio using java?

Respect my post Im a newbie :) thank you for understanding
sorry for my grammar
This program is to choose from gallery permission and send to second activity. the
permission is allowed is okay it will send it to the second activity...but when i clicked "oks" in the first popup permission and when i "dont allow files access the device" it will run and when i click button "pick " it will stay to and main activity when i click the button "pick"
MainActivity.java
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void buttonGalleryOpen(View view)
{
Intent intent = new Intent(this, gallery_view.class);
startActivity(intent);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="#+id/textview1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="camera sample"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/textview1"
android:layout_marginTop="3dp">
<Button
android:id="#+id/button_pick"
android:layout_width="100dp"
android:layout_height="50dp"
android:layout_marginTop="30dp"
android:gravity="center"
android:onClick="buttonGalleryOpen"
android:text="pick" />
</RelativeLayout>
</RelativeLayout>
gallery_view.java
public class gallery_view extends AppCompatActivity {
private int STORAGE_PERMISSION_CODE = 1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_gallery_view);
if (ContextCompat.checkSelfPermission(gallery_view.this,
Manifest.permission.READ_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
Intent intent = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
//noinspection deprecation
startActivityForResult(intent, 3);
} else {
requestStoragePermission();
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK && data != null) {
Uri selectedImage = data.getData();
ImageView imageView = findViewById(R.id.imageviewfromgallery);
imageView.setImageURI(selectedImage);
} else {
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
}
}
private void requestStoragePermission() {
if (ActivityCompat.shouldShowRequestPermissionRationale(this,
Manifest.permission.READ_EXTERNAL_STORAGE)) {
new AlertDialog.Builder(this)
.setTitle("Permission needed")
.setMessage("This permission is needed because of this and that")
.setPositiveButton("oks", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
ActivityCompat.requestPermissions(gallery_view.this, new
String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, STORAGE_PERMISSION_CODE);
}
})
.setNegativeButton("cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int i) {
dialog.dismiss();
}
})
.create().show();
} else {
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
}
}
}
activity_gallery_view.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<RelativeLayout
android:id="#+id/relative_1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="camera sample"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</RelativeLayout>
<RelativeLayout
android:layout_below="#id/relative_1"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/imageviewfromgallery"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</RelativeLayout>
</RelativeLayout>

Check official documentation here https://developer.android.com/training/permissions/requesting#java
Also, after user disabled permission dialog,try to send user to app settings to enable it manually.
Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS); Uri uri = Uri.fromParts("package", getPackageName(), null); intent.setData(uri); startActivityForResult(intent, REQUEST_PERMISSION_SETTING);

Select a photo from the gallery and show it in another Activity [duplicate]

This question already has answers here:
Select a image from the gallery and show it in another Activity
(3 answers)
Closed 6 months ago.
I am making an mobile app in which i have to select image from gallery by clicking a button and then display it in another activity. The problem is the image wont show to the second activity. Theres no problems running the code. what would be the problem.. PLEASE HELP ME
MainActivity.java
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void buttonGalleryOpen(View view)
{
Intent intent = new Intent(Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
//noinspection deprecation
startActivityForResult(intent, RESULT_OK);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #Nullable Intent data) {
Bitmap selectedphoto = null;
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK && data != null){
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 filePath = cursor.getString(columnIndex);
selectedphoto = BitmapFactory.decodeFile(filePath);
cursor.close();
Intent intent = new Intent(MainActivity.this,gallery_view.class);
intent.putExtra("data", selectedphoto);
startActivity(intent);
}
}
}
I am making an mobile app in which i have to select image from gallery by clicking a button and then display it in another activity. The problem is the image wont show to the second activity. Theres no problems running the code. what would be the problem.. PLEASE HELP ME
This is an activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<TextView
android:id="#+id/textview1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="camera sample"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:layout_below="#+id/textview1"
android:layout_marginTop="3dp">
<Button
android:id="#+id/bottonGalleryOpen"
android:onClick="buttonGalleryOpen"
android:layout_width="100dp"
android:layout_height="50dp"
android:layout_marginTop="30dp"
android:gravity="center"
android:text="pick" />
</RelativeLayout>
</RelativeLayout>
gallery_view.java
public class gallery_view extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_gallery_view);
ImageView imageview = (ImageView)findViewById(R.id.ImageShow);
Bitmap selectedImage =(Bitmap)this.getIntent().getParcelableExtra("data");
imageview.setImageBitmap(selectedImage);
}
}
gallery_view.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<RelativeLayout
android:id="#+id/relative_1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="camera sample"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</RelativeLayout>
<RelativeLayout
android:layout_below="#id/relative_1"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/ImageShow"
android:layout_width="match_parent"
android:layout_height="500dp" />
</RelativeLayout>
</RelativeLayout>

This line in your code does not make sense:
intent.putExtra("data", "selectedphoto");
You are adding here string "selectedphoto" which is in no way connected to selectedphoto variable you initialised earlier. You could put your bitmap to intent extra as byte array but this is in-efficient, especially when the image is large.
Instead of passing bitmap to ShowImage activity, pass your URI and then retrieve actual bitmap in ShowImage activity exactly as you do now in your PictureOptions activity.
intent.setData(passed uri here);
In your ShowImage activity do:
URI imageUri = getIntent().getData();

Attempt to invoke virtual method 'void android.widget.Button.setVisibility(int)' on a null object

I have 3 buttons on my layout 1 visible and 2 invisible at the time when the app is open,
when I click the 1st visible button it's open the camera to click the picture after the picture was clicked the picture was displayed at an ImageView on that same layout. After the picture was displayed at that ImageView I want to make the 2 invisible buttons visible and the 1 visible button invisible but when I try to do this I gating this error.
here is my XML file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/background"
android:orientation="vertical"
android:padding="30dp"
tools:context=".Front_Scan">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="16dp"
android:gravity="center"
android:text="Scan Front Side"
android:textAlignment="center"
android:textAllCaps="false"
android:textColor="#color/yellow"
android:textSize="28sp"
android:textStyle="bold" />
<com.google.android.material.card.MaterialCardView
android:layout_width="match_parent"
android:layout_height="230dp"
android:layout_gravity="center"
android:layout_marginTop="30dp"
app:cardBackgroundColor="#color/background"
app:cardCornerRadius="22dp"
app:cardElevation="4dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:orientation="vertical">
<ImageView
android:id="#+id/Image_id_front"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:scaleType="fitXY"
android:src="#drawable/id_front" />
</LinearLayout>
</com.google.android.material.card.MaterialCardView>
<Button
android:id="#+id/Front_imgCapture_again"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="#drawable/flag_transparent"
android:text="Scan Again"
android:textAllCaps="false"
android:textColor="#color/yellow"
android:visibility="invisible"
android:textSize="17sp" />
<android.widget.Button
android:id="#+id/imgCapture_front"
android:layout_width="220dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="16dp"
android:background="#drawable/button_style_ylo"
android:text="Scan Now"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="19sp"
android:textStyle="bold"
android:visibility="visible"/>
<android.widget.Button
android:id="#+id/front_next"
android:layout_width="220dp"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="8dp"
android:background="#drawable/button_style_ylo"
android:text="Next Step"
android:textAllCaps="false"
android:textColor="#color/white"
android:textSize="19sp"
android:textStyle="bold"
android:onClick="next"
android:visibility="invisible"/>
</LinearLayout>
enter image description here
here is my java class Code
public class Front_Scan extends AppCompatActivity {
private static final int PERMISSION_CODE = 1000;
private static final int IMAGE_CAPTURE_CODE = 1001;
Button frontImgCap;
Button frontImgCapAgain;
Button frontNext;
ImageView frontImg;
Uri image_uri;
private int REQUEST_CODE_PERMISSIONS = 101;
private String[] REQUIRED_PERMISSIONS = new String[]{"android.permission.CAMERA",
"android.permission.WRITE_EXTERNAL_STORAGE"};
AutoFitTextureView textureView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_front_scan);
frontImg = findViewById(R.id.Image_id_front);
frontImgCap = findViewById(R.id.imgCapture_front);
frontImgCapAgain = findViewById(R.id.imgCapture_again);
frontNext = findViewById(R.id.front_next);
frontImgCap.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//if system os is >= marshmallow, request runtime permission
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (checkSelfPermission(Manifest.permission.CAMERA) ==
PackageManager.PERMISSION_DENIED ||
checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) ==
PackageManager.PERMISSION_DENIED) {
//permission not enable, request it
String[] permission = {Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE};
//show popup to request permissions
requestPermissions(permission, PERMISSION_CODE);
} else {
//permission already given
openCamera();
}
} else {
//system os < marshmallow
openCamera();
}
}
});
}
private void openCamera() {
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.TITLE, "New Picture");
values.put(MediaStore.Images.Media.DESCRIPTION, "From the camera");
image_uri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
//Camera intent
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, image_uri);
startActivityForResult(cameraIntent,IMAGE_CAPTURE_CODE);
}
public void next(View view) {
Intent myIntent = new Intent(Front_Scan.this, back_scan.class);
Front_Scan.this.startActivity(myIntent);
finish();
}
#Override
public void onRequestPermissionsResult(int requestCode, #NonNull String[] permissions, #NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
switch (requestCode) {
case PERMISSION_CODE:
if (grantResults.length > 0 && grantResults[0] ==
PackageManager.PERMISSION_GRANTED){
openCamera();
}else {
Toast.makeText(this, "permission denied...", Toast.LENGTH_SHORT).show();
}
}
}
#Override
protected void onActivityResult(int requestCode, int resultCode, #NonNull Intent data) {
//called when image was captured from camera
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
frontImg.setImageURI(image_uri);
//geting error at this line//
frontImgCapAgain.setVisibility(VISIBLE);
frontImgCap.setVisibility(INVISIBLE);
frontNext.setVisibility(VISIBLE);
}
}
}

I think You should change something in Your AndroidManifest.xml file. Try adding the singleTop attribute to the Front_Scan <activity>. I've encountered a similar problem once and the attribute helped because, as the docs say:
If, when starting the activity, there is already an instance of the same activity class in the foreground that is interacting with the user, then re-use that instance.
So the code fragment in Your case should look like this:
<activity
android:name=".Front_Scan"
android:launchMode="singleTop"
...>
...
</activity>

How to display an ImageView on the whole screen on android?

In my app I need to take a pic from the gallery(I have working code for that, that gives me the Uri of the pic) and place the Uri in an ImageView. The problem I'm running into is that the pic is not covering the whole screen like I want it to, even though I have the height and width of the ImageVIew set to match_parent in the layout. Is there any way I can set every pic from the gallery to display on the whole sceen?
Here's my code:
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
selectedImageUri = data.getData();
selectedImagePath = getPath(selectedImageUri);
System.out.println("Image Path : " + selectedImagePath);
img.setImageURI(selectedImageUri);
}
}
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
public void onClick(View v) {
// TODO Auto-generated method stub
if(v.getId()==btn.getId())
{
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,"Select Picture"), SELECT_PICTURE);
}
}
And here's my layout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal" >
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="30"
android:orientation="vertical" >
<Button
android:id="#+id/gallery"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
<ImageView
android:id="#+id/pic"
android:layout_width="fill_parent"
android:layout_height="fill_parent"/>
</RelativeLayout>

You can use the following android:scaleType="fitXY"

Picture not being saved Android

At the click of a button, I want to start an Intent to take a picture, and then display it in my layout. I am using the following code:
private void takePicture() {
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
File photo = new File(Environment.getExternalStorageDirectory(),
"Pic.jpg");
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photo));
imageUri = Uri.fromFile(photo);
startActivityForResult(intent, 0);
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case 0:
if (resultCode == Activity.RESULT_OK) {
Uri selectedImage = imageUri;
getContentResolver().notifyChange(selectedImage, null);
ImageView imageView = (ImageView) findViewById(R.id.ImageView);
ContentResolver cr = getContentResolver();
Bitmap bitmap;
try {
bitmap = android.provider.MediaStore.Images.Media
.getBitmap(cr, selectedImage);
imageView.setImageBitmap(Bitmap.createScaledBitmap(bitmap, bitmap.getHeight()/2, bitmap.getWidth()/2, false));
Toast.makeText(this, selectedImage.toString(),
Toast.LENGTH_LONG).show();
} catch (Exception e) {
Toast.makeText(this, "Failed to load", Toast.LENGTH_SHORT)
.show();
}
}
The Picture is definitely showing, but when I change the activity and go back to this one, the picture goes away. How do I save it permanently?

Well, you will have to manually save the image either in SQL Lite or SD Card or wherever you want.
See this for storing image in SQLite
See this for storing image in SD Card

Try this as my code is working properly
public class PhotoActivity extends Activity {
/** The Constant PICK_IMAGE. */
private static final int PICK_IMAGE = 0;
/** The Constant PICK_IMAGE_FROM_GALLERY. */
private static final int PICK_IMAGE_FROM_GALLERY = 1;
/** The btn cancel. */
private Button btnPhotoCamera,btnPhotoGallery,btnCancel;
/** The img view. */
private ImageView imgView;
/** The u. */
private Uri u;
/* (non-Javadoc)
* #see android.app.Activity#onCreate(android.os.Bundle)
*/
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_photo_options);
imgView=(ImageView)findViewById(R.id.imgDisplayImage);
btnPhotoCamera=(Button)findViewById(R.id.btnPhotoCamera);
btnPhotoGallery=(Button)findViewById(R.id.btnPhotoGallery);
btnCancel=(Button)findViewById(R.id.btnCancel);
btnPhotoCamera.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent camera=new Intent();
camera.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
camera.putExtra("crop", "true");
File f=Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
u = Uri.fromFile(new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),"myFile.jpg"));
camera.putExtra(MediaStore.EXTRA_OUTPUT, u);
startActivityForResult(camera, PICK_IMAGE);
}
});
btnPhotoGallery.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, PICK_IMAGE_FROM_GALLERY);
}
});
btnCancel.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent goStartUp=new Intent(PhotoActivity.this, StartUpActivity.class);
goStartUp.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(goStartUp);
finish();
}
});
}
/* (non-Javadoc)
* #see android.app.Activity#onActivityResult(int, int, android.content.Intent)
*/
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
if (resultCode==RESULT_OK )
{
if(requestCode == PICK_IMAGE) {
InputStream is=null;
try {
is = this.getContentResolver().openInputStream(u);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
Bitmap bmp=BitmapFactory.decodeStream(is);
imgView.setImageBitmap(bmp);
Log.i("Inside", "PICK_IMAGE");
}
if (requestCode == PICK_IMAGE_FROM_GALLERY) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Log.d("data",filePathColumn[0]);
Cursor cursor = getContentResolver().query(selectedImage,filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
imgView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
Log.i("Inside", "PICK_IMAGE_FROM_GALLERY");
}
}
}
}
XML File:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#f0f0f0" >
<TextView
android:id="#+id/lblSelectOptions"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginTop="20dp"
android:text="#string/two_options"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#ff0000" />
<Button
android:id="#+id/btnPhotoCamera"
android:layout_width="75dp"
android:layout_height="wrap_content"
android:layout_below="#+id/lblSelectOptions"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"
android:text="#string/camera" />
<Button
android:id="#+id/btnPhotoGallery"
android:layout_width="75dp"
android:layout_height="wrap_content"
android:layout_below="#+id/btnPhotoCamera"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"
android:text="#string/gallery" />
<Button
android:id="#+id/btnCancel"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:layout_below="#+id/btnPhotoGallery"
android:layout_centerHorizontal="true"
android:layout_marginTop="19dp"
android:text="#string/cancel" />
<TextView
android:id="#+id/lblDisplayImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/btnCancel"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"
android:text="#string/below_this_text_image_will_be_displayed"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textColor="#000000"
android:textSize="13dp" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_below="#+id/lblDisplayImage"
android:layout_centerInParent="true"
android:layout_marginTop="10dp"
android:gravity="bottom" >
<!--
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent" >
-->
<ImageView
android:id="#+id/imgDisplayImage"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/lblDisplayImage"
android:layout_centerInParent="true"
android:contentDescription="#string/area_where_image_is_to_be_displayed" />
<!-- </ScrollView> -->
</RelativeLayout>
</RelativeLayout>
Also Modify the Android Manifest file as per your use with following:
<manifest....
<uses-sdk
android:minSdkVersion="3"
android:targetSdkVersion="21" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.RECORD_VIDEO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-feature
android:name="android.hardware.camera"
android:required="false" />
<application....
..........
</application>
</manifest>