How to distinguish whether the image is coming from gallery or camera in android?

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执念已碎
执念已碎 2020-12-12 05:49

I am making an app in which i can pick an image from gallery or i can take image from camera and i am moving to next activity with the selected image.There I want to disting

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  • 2020-12-12 06:22
    // try this way,hope this will help you...
    
    launcher.xml
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:orientation="vertical">
    
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1">
            <ImageView
                android:id="@+id/imageView"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content" />
        </LinearLayout>
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
            <Button
                android:id="@+id/select_photo"
                android:layout_width="0dp"
                android:layout_weight="1"
                android:layout_height="wrap_content"
                android:text="Gallery"/>
    
            <Button
                android:id="@+id/take_photo"
                android:layout_width="0dp"
                android:layout_weight="1"
                android:layout_height="wrap_content"
                android:text="Camera"/>
        </LinearLayout>
    </LinearLayout>
    
    activity_main
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center">
    
        <ImageView
            android:id="@+id/imageView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:adjustViewBounds="true"/>
    </LinearLayout>
    
    LauncherActivity.java
    public class LauncherActivity extends Activity {
    
        private static final int CAMERA_REQUEST = 1;
        private static final int RESULT_LOAD_IMAGE = 2;
        Button camera;
        Button gallery;
        ImageView imageView;
        private String imgPath;
    
        protected void onCreate(Bundle paramBundle) {
            super.onCreate(paramBundle);
            setContentView(R.layout.launcher);
            gallery = (Button) findViewById(R.id.select_photo);
            camera = (Button) findViewById(R.id.take_photo);
            imageView = (ImageView) findViewById(R.id.imageView);
    
    
            gallery.setOnClickListener(new View.OnClickListener() {
    
                @Override
                public void onClick(View v) {
                    Intent intent = new Intent();
                    intent.setType("image/*");
                    intent.setAction(Intent.ACTION_GET_CONTENT);
                    startActivityForResult(Intent.createChooser(intent, ""), RESULT_LOAD_IMAGE);
                }
            });
    
            camera.setOnClickListener(new View.OnClickListener() {
    
                @Override
                public void onClick(View v) {
                    final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                    intent.putExtra(MediaStore.EXTRA_OUTPUT, setImageUri());
                    startActivityForResult(intent, CAMERA_REQUEST);
                }
            });
    
        }
    
        public Uri setImageUri() {
            // Store image in dcim
            File file = new File(Environment.getExternalStorageDirectory() + "/DCIM/", "image" + new Date().getTime() + ".png");
            Uri imgUri = Uri.fromFile(file);
            this.imgPath = file.getAbsolutePath();
            return imgUri;
        }
    
        public String getImagePath() {
            return imgPath;
        }
    
        protected void onActivityResult(int requestCode, int resultCode, Intent data) {
            super.onActivityResult(requestCode, resultCode, data);
            if (resultCode == Activity.RESULT_OK) {
                if (requestCode == RESULT_LOAD_IMAGE) {
                    imageView.setImageBitmap(decodeFile(getAbsolutePath(data.getData())));
                    Intent intent = new Intent(LauncherActivity.this, MainActivity.class);
                    intent.putExtra("path", getAbsolutePath(data.getData()));
                    intent.putExtra("from", "Gallery");
                    startActivity(intent);
                } else if (requestCode == CAMERA_REQUEST) {
                    imageView.setImageBitmap(decodeFile(getImagePath()));
                    Intent intent = new Intent(LauncherActivity.this, MainActivity.class);
                    intent.putExtra("path", getImagePath());
                    intent.putExtra("from", "Camera");
                    startActivity(intent);
                }
            }
    
        }
    
        public String getAbsolutePath(Uri uri) {
            if(Build.VERSION.SDK_INT >= 19){
                String id = uri.getLastPathSegment().split(":")[1];
                final String[] imageColumns = {MediaStore.Images.Media.DATA };
                final String imageOrderBy = null;
                Uri tempUri = getUri();
                Cursor imageCursor = getContentResolver().query(tempUri, imageColumns,
                        MediaStore.Images.Media._ID + "="+id, null, imageOrderBy);
                if (imageCursor.moveToFirst()) {
                    return imageCursor.getString(imageCursor.getColumnIndex(MediaStore.Images.Media.DATA));
                }else{
                    return null;
                }
            }else{
                String[] projection = { MediaStore.MediaColumns.DATA };
                Cursor cursor = getContentResolver().query(uri, projection, null, null, null);
                if (cursor != null) {
                    int column_index = cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATA);
                    cursor.moveToFirst();
                    return cursor.getString(column_index);
                } else
                    return null;
            }
    
        }
    
        private Uri getUri() {
            String state = Environment.getExternalStorageState();
            if(!state.equalsIgnoreCase(Environment.MEDIA_MOUNTED))
                return MediaStore.Images.Media.INTERNAL_CONTENT_URI;
    
            return MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
        }
    
        public Bitmap decodeFile(String path) {
            try {
                // Decode image size
                BitmapFactory.Options o = new BitmapFactory.Options();
                o.inJustDecodeBounds = true;
                BitmapFactory.decodeFile(path, o);
                // The new size we want to scale to
                final int REQUIRED_SIZE = 1024;
    
                // Find the correct scale value. It should be the power of 2.
                int scale = 1;
                while (o.outWidth / scale / 2 >= REQUIRED_SIZE && o.outHeight / scale / 2 >= REQUIRED_SIZE)
                    scale *= 2;
    
                // Decode with inSampleSize
                BitmapFactory.Options o2 = new BitmapFactory.Options();
                o2.inSampleSize = scale;
                return BitmapFactory.decodeFile(path, o2);
            } catch (Throwable e) {
                e.printStackTrace();
            }
            return null;
        }
    }
    
    MainActivity.java
    public class MainActivity extends Activity {
    
    
        ImageView imageView;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            imageView = (ImageView) findViewById(R.id.imageView);
            Toast.makeText(this,getIntent().getStringExtra("from"),Toast.LENGTH_SHORT)
            .show();
            imageView.setImageBitmap(decodeFile(getIntent().getStringExtra("path")));
    
        }
    
        public Bitmap decodeFile(String path) {
            try {
                // Decode image size
                BitmapFactory.Options o = new BitmapFactory.Options();
                o.inJustDecodeBounds = true;
                BitmapFactory.decodeFile(path, o);
                // The new size we want to scale to
                final int REQUIRED_SIZE = 1024;
    
                // Find the correct scale value. It should be the power of 2.
                int scale = 1;
                while (o.outWidth / scale / 2 >= REQUIRED_SIZE && o.outHeight / scale / 2 >= REQUIRED_SIZE)
                    scale *= 2;
    
                // Decode with inSampleSize
                BitmapFactory.Options o2 = new BitmapFactory.Options();
                o2.inSampleSize = scale;
                return BitmapFactory.decodeFile(path, o2);
            } catch (Throwable e) {
                e.printStackTrace();
            }
            return null;
    
        }
    }
    
    Note : please not forget this permission in AndroidManifest.xml
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    
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  • 2020-12-12 06:37
    startActivityForResult(cameraIntent, CAMERA_REQUEST); 
    startActivityForResult(gallery_intent, RESULT_LOAD_IMAGE);
    

    regarding to your request code you can differentiate image is coming from gallery or camera

     boolean gallery;
    
         if(requestCode == CAMERA_REQUEST){
            //then image from camera
    
    gallery=true;
        galleryIntent intent = new Intent(LauncherActivity.this, MainActivity.class);
              intent.putExtra("path", picturePath);  
             intent.putExtra("isfrom", gallery); 
        startActivity(intent);
            }
            if(requestCode == RESULT_LOAD_IMAGE){
        galleryIntent intent = new Intent(LauncherActivity.this, MainActivity.class);
              intent.putExtra("path", picturePath);  
             intent.putExtra("isfrom", gallery); 
        startActivity(intent);
            //then image from gallery
            }
    

    in second activity you can get boolean from intent.if it is true image from gallery

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