I want to be able to select an image from the gallery and be able to show it and zoom in / out
I tried this code just to select an image
public static final int PICK_IMAGE = 1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
Button buttonLoadImage = (Button) findViewById(R.id.button);
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, PICK_IMAGE);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_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.imageView);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
}
}
and when i tried to see if it works .. it opened the gallery but when i selected in image .. it didnt appear in the imageview
how can i fix it and how to be able to zoom in and out
Use this code inside onActivityResult()
if (resultCode == RESULT_OK) {
try {
final Uri imageUri = data.getData();
final InputStream imageStream = getContentResolver().openInputStream(imageUri);
final Bitmap bitmapImage= BitmapFactory.decodeStream(imageStream);
ImageView imageView = (ImageView) findViewById(R.id.imageView);
imageView.setImageBitmap(bitmapImage);
} catch (FileNotFoundException e) {
e.printStackTrace();
Toast.makeText(PostImage.this, "Something went wrong", Toast.LENGTH_LONG).show();
}
}else {
Toast.makeText(PostImage.this, "You haven't picked Image",Toast.LENGTH_LONG).show();
}
}
In onActivityResult:
imageView.setImageUri(data.getData());
Thats all.
Related
This question already has answers here:
android pick images from gallery
(19 answers)
Closed 5 years ago.
Source Code for get image from gallery and set it to image view and i want to pass the selected image in another activity and set it to linear layout.
private void galleryIntent() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);//
startActivityForResult(Intent.createChooser(intent, "Select File"), SELECT_FILE);
}
private void onSelectFromGalleryResult(Intent data) {
bitmap = null;
if (data != null) {
filePath = data.getData();
try {
bitmap = MediaStore.Images.Media.getBitmap(getApplicationContext().getContentResolver(), data.getData());
System.out.println("bitmap is :" +bitmap);
} catch (IOException e) {
e.printStackTrace();
}
}
set.setImageBitmap(bitmap);
}
private static int RESULT_LOAD_IMAGE = 1;
#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();
Intent i=new Intent(this,NextActivity.class);
i.putExtra("path",picturePath);
startActivity(i);
}
}
NextActivity File :-
String picturePath =getIntent().getStringExtra("path");
LinearLayout imageView = (LinearLayout) findViewById(R.id.imgView);
Bitmap bmImg = BitmapFactory.decodeFile(picturePath);
BitmapDrawable background = new BitmapDrawable(bmImg);
imageView.setBackgroundDrawable(background);
Used from https://stackoverflow.com/a/26403116/8603832
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 2 && 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();
bitmap = BitmapFactory.decodeFile(picturePath);
image.setImageBitmap(bitmap);
if (bitmap != null) {
ImageView rotate = (ImageView) findViewById(R.id.rotate);
}
}
pass selectedImage URI in Other Activity and using intent and use same code for generate the Bitmap with that URI
public class Main2Activity extends AppCompatActivity {
private static int PICK_IMAGE_REQUEST = 1;
ImageView imgView;
static final String TAG = "Main2Activity";
public String[] filePathColon;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
}
public void loadImagefromGallery(View view) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE_REQUEST);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
try {
if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK && null != data) {
Uri uri = data.getData();
Bitmap bitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), uri);
int nh = (int) (bitmap.getHeight() * (1024.0 / bitmap.getWidth()));
Bitmap scaled = Bitmap.createScaledBitmap(bitmap, 1024, nh, true);
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(uri, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
final String filePath = cursor.getString(columnIndex);
imgView = (ImageView) findViewById(imageView);
imgView.setImageBitmap(scaled);
Button button3 = (Button) findViewById(R.id.button3);
button3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(getApplicationContext(), Main3Activity.class);
intent.putExtra("imageUri", filePath);
startActivity(intent);
}
});
} else {
Toast.makeText(this, "No.", Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
Toast.makeText(this, "Oops! Sorry", Toast.LENGTH_LONG).show();
e.printStackTrace();
}
}
}
public class Main3Activity extends AppCompatActivity {
ImageView imageView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main3);
imageView = (ImageView) findViewById(R.id.imageView2);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Bitmap ba = this.getIntent().getParcelableExtra("imageUri");
imageView.setImageBitmap(ba);
}
}
What is the problem?
Step #1: Delete these lines:
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(uri, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
final String filePath = cursor.getString(columnIndex);
Step #2: Replace intent.putExtra("imageUri", filePath); with intent.setData(uri).addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
Step #3: Replace:
Bitmap ba = this.getIntent().getParcelableExtra("imageUri");
imageView.setImageBitmap(ba);
with:
Uri imageUri = getIntent().getData();
imageView.setImageURI(imageUri);
Eventually, replace of your bitmap work (the Bitmap that you are not using in the first activity, and setImageURI() in the second activity) with an image-loading library, such as Picasso, so that you can move all this data processing off the main application thread.
I am a beginner of android development. I am trying to develop my own gallery. But I am facing a problem. When I go to SD card on my memory and choose a photo then I am trying to open image using my Image Viewer app. But when I select Image Viewer then another intent is called for choosing my image. But I directly want show the selected image on Imageview. Please anyone help me.
My code:
public class MainActivity extends Activity {
private static final int REQUEST_CODE = 1;
private Bitmap bitmap;
private ImageView imageView;
private String selectedImagePath;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = (ImageView) findViewById(R.id.result);
pickImage();
}
public void pickImage() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
startActivityForResult(intent, REQUEST_CODE);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
InputStream stream = null;
if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK)
try {
// recyle unused bitmaps
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);
Log.v("roni", filePath);
cursor.close();
if(bitmap != null && !bitmap.isRecycled())
{
bitmap = null;
}
bitmap = BitmapFactory.decodeFile(filePath);
imageView.setBackgroundResource(0);
imageView.setImageBitmap(bitmap);
// imageView.setImageBitmap(bitmap);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (stream != null)
try {
stream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
private 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);
}
}
/////After changing the code
public class MainActivity extends Activity {
private static final int REQUEST_CODE = 1;
private Bitmap bitmap;
private ImageView imageView;
private String selectedImagePath;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = (ImageView) findViewById(R.id.result);
Intent i = new Intent(
Intent.ACTION_PICK,android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, REQUEST_CODE);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
InputStream stream = null;
if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK)
try {
// recyle unused bitmaps
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);
Log.v("roni", filePath);
cursor.close();
if(bitmap != null && !bitmap.isRecycled())
{
bitmap = null;
}
bitmap = BitmapFactory.decodeFile(filePath);
//imageView.setBackgroundResource(0);
imageView.setImageBitmap(bitmap);
// imageView.setImageBitmap(bitmap);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (stream != null)
try {
stream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
private 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); } }
Let's assume you have an activity called ViewActivity that shows selected Image.
in your AndroidManifest.xml set your activity as a Image Viewer Activity by adding this :
<activity android:name=".ViewActivity">
<intent-filter>
<action android:name="android.intent.action.VIEW"/>
<category android:name="android.intent.category.DEFAULT"/>
<data android:mimeType="image/*"/>
</intent-filter>
</activity>
in onCreate() method of ViewActivity catch passed Image by doing this :
Intent intent = getIntent();
Uri data = intent.getData();
//Check If data type is Image
if (intent.getType().indexOf("image/") != -1)
{
myImageView.setImageURI(data);
}
try this Code replace whole class plz if success then i will explain to you
public class ImageGalleryDemoActivity extends Activity {
private static int RESULT_LOAD_IMAGE = 1;
#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));
}
}
}
How Can I put image from directory instead of load from media. I load from gallery like this
String[] filePathColumn = { MediaStore.Images.Media.DATA };. How can load from /assets or /drawable-mdpi ? This is my code. Kindly tell me how can i used this code to add image from my directory?
public class ImageGalleryDemoActivity extends Activity {
private static int RESULT_LOAD_IMAGE = 1;
/** Called when the activity is first created. */
#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));
}
}
You can put the respective drawables in the android drawables folders and Android would automatically choose the required drawable based upon the device display density. You can set the drawables as
imageView = (ImageView)findViewById(R.id.imageView);
imageView.setImageDrawable(getResources().getDrawable(R.drawable.image));
You can also take help from here.
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