seleccionar - manipular imagenes en android studio

¿Cómo cargar una imagen en la vista de imagen desde la galería?

Question

Tengo una actividad, que tiene un botón. Cuando hago clic en el botón, me redirige a la galería de imágenes. Quiero mostrar la imagen seleccionada en la siguiente actividad usando una vista de imagen. Pero no está mostrando la imagen. La vista está fuera de la pantalla cuando se establece la imagen.

Mi código para seleccionar la imagen y pasar a continuación se muestra a continuación. No uso ninguna historia verdadera en mis actividades.

 @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();
if (!(picturePath.equals(""))) {
Intent intent = new Intent();
intent.setClass(MainActivity.this, ImageInGellary.class);
intent.putExtra("picturePath", picturePath);
startActivity(intent);
}
}
}
public class ImageInGellary extends Activity {
Button cancel;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.load_image);
cancel = (Button) findViewById(R.id.buttonCancelPicture);
Intent in = getIntent();
savedInstanceState = in.getExtras();
String picturePath = savedInstanceState.getString("picturePath");
ImageView imageView = (ImageView) findViewById(R.id.img_view);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
cancel.setOnClickListener(new OnClickListener() {
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);
*/
Intent intent = new Intent();
intent.setClass(ImageInGellary.this, MainActivity.class);
startActivity(intent);
}
});
}
}

Answer 1

 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));
}
}
}

Answer 2

Si quieres lograrlo en 1 línea, entonces todo lo que tienes que hacer es:

Picasso.with(MainActivity.this).load(data.getData()).noPlaceholder().centerCrop().fit().into((ImageView) findViewById(R.id.imageView1));

Solución completa :-

Elegir imagen

public void pickImage() {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"), SELECT_PICTURE);
}

Cargar imagen

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
//Get ImageURi and load with help of picasso
//Uri selectedImageURI = data.getData();
Picasso.with(MainActivity1.this).load(data.getData()).noPlaceholder().centerCrop().fit()
.into((ImageView) findViewById(R.id.imageView1));
}
}
}

En su situación, debe pasar ImageURI a la siguiente actividad

Uri selectedImageURI = data.getData();

Answer 3

public void onClick(View view) {
Intent gallery = new Intent(Intent.ACTION_GET_CONTENT);
gallery.setType("image/*");
startActivityForResult(gallery, 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){
Uri imageUri = data.getData();
imgView.setImageURI(imageUri);
}
}

Answer 4

He resuelto tu problema Después de seleccionar la imagen, convierta la imagen de Uri a Cadena y en su segunda clase, convierta su cadena de nuevo en imagen.

http://whats-online.info/science-and-tutorials/95/Android-get-image-from-gallery-into-imageview-programmatically/

http://whats-online.info/science-and-tutorials/49/Android-passing-multiple-data-from-one-activity-to-another/

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch(requestCode) {
case SELECT_PHOTO:
if(resultCode == RESULT_OK){
Uri selectedImage = data.getData();
if(selectedImage !=null){
Intent intent=new Intent(MainActivity.this, Activity2.class);
Bundle extras = new Bundle();
extras.putString("image", selectedImage.toString());
intent.putExtras(extras);
startActivity(intent);
}
}
}

Activity2.class

 Bundle extras = getIntent().getExtras();
String name = extras.getString("image");
Uri imageFinal=Uri.parse(name);

Answer 5

Si nada funciona, el siguiente código funcionará:

import java.io.FileDescriptor;
import java.io.IOException;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.ParcelFileDescriptor;
import android.provider.MediaStore;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
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);
Bitmap bmp = null;
try {
bmp = getBitmapFromUri(selectedImage);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
imageView.setImageBitmap(bmp);
}
}
private Bitmap getBitmapFromUri(Uri uri) throws IOException {
ParcelFileDescriptor parcelFileDescriptor =
getContentResolver().openFileDescriptor(uri, "r");
FileDescriptor fileDescriptor = parcelFileDescriptor.getFileDescriptor();
Bitmap image = BitmapFactory.decodeFileDescriptor(fileDescriptor);
parcelFileDescriptor.close();
return image;
}
}