如何从android中的库中选择多个图像？

Question

我正在制作一个项目，我想从库中选择多张照片，并希望将其保存在imageview数组中。 我可以导入单个图像并保存在imageview 任何人都可以告诉我如何导入多个图像并保存在数组或不同的图像视图中？

MainActivity extends Activity implements OnClickListener {

    Button addphoto, save;
    ImageView img1[];
    Bitmap yourbitmap, resized;
    int RESULT_LOAD_IMAGE1 =1;



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        addphoto = (Button)findViewById(R.id.add);
        img1[0] = (ImageView)findViewById(R.id.imageView1);
        save = (Button)findViewById(R.id.save);
        addphoto.setOnClickListener(this);
        save.setOnClickListener(this);
    }
@Override
    public void onClick(View arg0) {
        // TODO Auto-generated method stub
        switch(arg0.getId()){
        case R.id.add:
            Intent intent = new Intent();
            intent.setType("image/*");
            intent.setAction(Intent.ACTION_GET_CONTENT);
            startActivityForResult(Intent.createChooser(intent, "Select Picture"), RESULT_LOAD_IMAGE1);
            break;
            }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        // TODO Auto-generated method stub
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == RESULT_LOAD_IMAGE1 && 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();

            try {
                yourbitmap = BitmapFactory.decodeFile(picturePath);
                resized=    Bitmap.createScaledBitmap(yourbitmap, 200,300, true);


                img1[0].setImageBitmap(resized);
            } catch (Exception e) {
                e.printStackTrace();
            }

        }



    }

}

Answer 1

使用以下代码实现自定义图库选择器：

<强> activity_main          

<ScrollView
    android:layout_width="match_parent"
    android:layout_height="wrap_content" android:id="@+id/scroll1"
    >

    <LinearLayout
        android:id="@+id/lnrImages"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

    </LinearLayout>
</ScrollView>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:id="@+id/linearLayout">
    <Button
        android:id="@+id/btnAddPhots"
        android:layout_width="0dp"
        android:layout_weight="1"
        android:layout_height="wrap_content"
        android:text="Add Phots"/>

    <Button
        android:id="@+id/btnSaveImages"
        android:layout_width="0dp"
        android:layout_weight="1"
        android:layout_height="wrap_content"
        android:text="Save"/>
</LinearLayout>

<强> custom_gallery

<?xml version="1.0" encoding="utf-8"?>
<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">
    <GridView
        android:id="@+id/grdImages"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:numColumns="auto_fit"
        android:verticalSpacing="10dp"
        android:horizontalSpacing="10dp"
        android:columnWidth="90dp"
        android:stretchMode="columnWidth"
        android:gravity="center"/>

    <Button
        android:id="@+id/btnSelect"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Select"
        android:layout_marginTop="5dp"/>

</LinearLayout>

<强> custom_gallery_item          

    <ImageView
        android:id="@+id/imgThumb"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

    <CheckBox
        android:id="@+id/chkImage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="top|right"/>
</FrameLayout>

<强> MainActivity

public class MainActivity extends Activity implements View.OnClickListener{

    private LinearLayout lnrImages;
    private Button btnAddPhots;
    private Button btnSaveImages;
    private ArrayList<String> imagesPathList;
    private Bitmap yourbitmap;
    private Bitmap resized;
    private final int PICK_IMAGE_MULTIPLE =1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        lnrImages = (LinearLayout)findViewById(R.id.lnrImages);
        btnAddPhots = (Button)findViewById(R.id.btnAddPhots);
        btnSaveImages = (Button)findViewById(R.id.btnSaveImages);
        btnAddPhots.setOnClickListener(this);
        btnSaveImages.setOnClickListener(this);
    }
    @Override
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.btnAddPhots:
                Intent intent = new Intent(MainActivity.this,CustomPhotoGalleryActivity.class);
                startActivityForResult(intent,PICK_IMAGE_MULTIPLE);
                break;
            case R.id.btnSaveImages:
                if(imagesPathList !=null){
                    if(imagesPathList.size()>1) {
                        Toast.makeText(MainActivity.this, imagesPathList.size() + " no of images are selected", Toast.LENGTH_SHORT).show();
                    }else{
                        Toast.makeText(MainActivity.this, imagesPathList.size() + " no of image are selected", Toast.LENGTH_SHORT).show();
                    }
                }else{
                    Toast.makeText(MainActivity.this," no images are selected", Toast.LENGTH_SHORT).show();
                }
                break;
        }
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK) {
            if(requestCode == PICK_IMAGE_MULTIPLE){
                imagesPathList = new ArrayList<String>();
                String[] imagesPath = data.getStringExtra("data").split("\\|");
                try{
                    lnrImages.removeAllViews();
                }catch (Throwable e){
                    e.printStackTrace();
                }
                for (int i=0;i<imagesPath.length;i++){
                    imagesPathList.add(imagesPath[i]);
                    yourbitmap = BitmapFactory.decodeFile(imagesPath[i]);
                    ImageView imageView = new ImageView(this);
                    imageView.setImageBitmap(yourbitmap);
                    imageView.setAdjustViewBounds(true);
                    lnrImages.addView(imageView);
                }
            }
        }

    }

}

<强> CustomPhotoGalleryActivity

 public class CustomPhotoGalleryActivity extends Activity {

    private GridView grdImages;
    private Button btnSelect;

    private ImageAdapter imageAdapter;
    private String[] arrPath;
    private boolean[] thumbnailsselection;
    private int ids[];
    private int count;


    /**
     * Overrides methods
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.custom_gallery);
        grdImages= (GridView) findViewById(R.id.grdImages);
        btnSelect= (Button) findViewById(R.id.btnSelect);

        final String[] columns = { MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID };
        final String orderBy = MediaStore.Images.Media._ID;
        @SuppressWarnings("deprecation")
        Cursor imagecursor = managedQuery(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null, null, orderBy);
        int image_column_index = imagecursor.getColumnIndex(MediaStore.Images.Media._ID);
        this.count = imagecursor.getCount();
        this.arrPath = new String[this.count];
        ids = new int[count];
        this.thumbnailsselection = new boolean[this.count];
        for (int i = 0; i < this.count; i++) {
            imagecursor.moveToPosition(i);
            ids[i] = imagecursor.getInt(image_column_index);
            int dataColumnIndex = imagecursor.getColumnIndex(MediaStore.Images.Media.DATA);
            arrPath[i] = imagecursor.getString(dataColumnIndex);
        }

        imageAdapter = new ImageAdapter();
        grdImages.setAdapter(imageAdapter);
        imagecursor.close();


        btnSelect.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                final int len = thumbnailsselection.length;
                int cnt = 0;
                String selectImages = "";
                for (int i = 0; i < len; i++) {
                    if (thumbnailsselection[i]) {
                        cnt++;
                        selectImages = selectImages + arrPath[i] + "|";
                    }
                }
                if (cnt == 0) {
                    Toast.makeText(getApplicationContext(), "Please select at least one image", Toast.LENGTH_LONG).show();
                } else {

                    Log.d("SelectedImages", selectImages);
                    Intent i = new Intent();
                    i.putExtra("data", selectImages);
                    setResult(Activity.RESULT_OK, i);
                    finish();
                }
            }
        });
    }
    @Override
    public void onBackPressed() {
        setResult(Activity.RESULT_CANCELED);
        super.onBackPressed();

    }

    /**
     * Class method
     */

    /**
     * This method used to set bitmap.
     * @param iv represented ImageView 
     * @param id represented id
     */

    private void setBitmap(final ImageView iv, final int id) {

        new AsyncTask<Void, Void, Bitmap>() {

            @Override
            protected Bitmap doInBackground(Void... params) {
                return MediaStore.Images.Thumbnails.getThumbnail(getApplicationContext().getContentResolver(), id, MediaStore.Images.Thumbnails.MICRO_KIND, null);
            }

            @Override
            protected void onPostExecute(Bitmap result) {
                super.onPostExecute(result);
                iv.setImageBitmap(result);
            }
        }.execute();
    }


    /**
     * List adapter
     * @author tasol
     */

    public class ImageAdapter extends BaseAdapter {
        private LayoutInflater mInflater;

        public ImageAdapter() {
            mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        }

        public int getCount() {
            return count;
        }

        public Object getItem(int position) {
            return position;
        }

        public long getItemId(int position) {
            return position;
        }

        public View getView(int position, View convertView, ViewGroup parent) {
            final ViewHolder holder;
            if (convertView == null) {
                holder = new ViewHolder();
                convertView = mInflater.inflate(R.layout.custom_gallery_item, null);
                holder.imgThumb = (ImageView) convertView.findViewById(R.id.imgThumb);
                holder.chkImage = (CheckBox) convertView.findViewById(R.id.chkImage);

                convertView.setTag(holder);
            } else {
                holder = (ViewHolder) convertView.getTag();
            }
            holder.chkImage.setId(position);
            holder.imgThumb.setId(position);
            holder.chkImage.setOnClickListener(new OnClickListener() {

                public void onClick(View v) {
                    CheckBox cb = (CheckBox) v;
                    int id = cb.getId();
                    if (thumbnailsselection[id]) {
                        cb.setChecked(false);
                        thumbnailsselection[id] = false;
                    } else {
                        cb.setChecked(true);
                        thumbnailsselection[id] = true;
                    }
                }
            });
            holder.imgThumb.setOnClickListener(new OnClickListener() {

                public void onClick(View v) {
                    int id = holder.chkImage.getId();
                    if (thumbnailsselection[id]) {
                        holder.chkImage.setChecked(false);
                        thumbnailsselection[id] = false;
                    } else {
                        holder.chkImage.setChecked(true);
                        thumbnailsselection[id] = true;
                    }
                }
            });
            try {
                setBitmap(holder.imgThumb, ids[position]);
            } catch (Throwable e) {
            }
            holder.chkImage.setChecked(thumbnailsselection[position]);
            holder.id = position;
            return convertView;
        }
    }


    /**
     * Inner class
     * @author tasol
     */
    class ViewHolder {
        ImageView imgThumb;
        CheckBox chkImage;
        int id;
    }

}

Answer 2

通过EXTRA_ALLOW_MULTIPLE方法对意图设置Intent.putExtra()选项：

  intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);

在您的代码中写如下：

Intent intent = new Intent();
intent.setType("image/*");
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,"Select Picture"), RESULT_LOAD_IMAGE1);

注意： EXTRA_ALLOW_MULTIPLE选项仅适用于Android API 18及更高版本。

如果您想开发自己的图库，请查看Select Multiple Images from Gallery

Answer 3

使用以下库从gallary中选择多个图像。 https://github.com/sangcomz/FishBun

Answer 4

以下是从默认图库中选择多个图像和视频的代码。

Button buttonLoadImage = (Button) findViewById(R.id.buttonLoadPicture);
    buttonLoadImage.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {

            Intent i = new Intent();
            i.setType("image/*");
       //i.setType("video/*");
            i.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
            i.setAction(Intent.ACTION_GET_CONTENT);
            startActivityForResult(
                    Intent.createChooser(i, "android.intent.action.SEND_MULTIPLE"), 1);
        }
    });

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    System.out.println("++data" + data.getClipData().getItemCount());// Get count of image here.

        System.out.println("++count" + data.getClipData().getItemCount());
        Uri selectedImage = data.getClipData().getItemAt(0).getUri();//As of now use static position 0 use as per itemcount.
        Bitmap bitmap = null;
  //        Uri selectedImage1 = data.getData();
        try {
            bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), selectedImage);
        } catch (IOException e) {
            e.printStackTrace();
        }
        System.out.println("+++ clipdate" + selectedImage);

        ImageView imageView = (ImageView) findViewById(R.id.imgView);
        imageView.setImageBitmap(bitmap);
    //        }

}

Answer 5

完成工作答案

意图

 Intent intent = new Intent();
        intent.setType("image/*");
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
            intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
        }
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGE_MULTIPLE);

活动结果

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    try {
        // When an Image is picked
        if (requestCode == PICK_IMAGE_MULTIPLE && resultCode == RESULT_OK
                && null != data && null != data.getClipData()) {

            ClipData mClipData = data.getClipData();

            Toast.makeText(getActivity(), "You picked " +
                            (mClipData.getItemCount() > 1 ? mClipData.getItemCount() + "Images" :
                                    mClipData.getItemCount() + "Image"),
                    Toast.LENGTH_LONG).show();

            pickedImageContainer.removeAllViews();

            int pickedImageCount;

            for (pickedImageCount = 0; pickedImageCount < mClipData.getItemCount();
                 pickedImageCount++) {

                ImageView productImageView =
                        new ImageView(getActivity());

                productImageView.setAdjustViewBounds(true);

                productImageView.setScaleType(ImageView.ScaleType.FIT_XY);

                productImageView.setLayoutParams(new LinearLayout
                        .LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
                        LinearLayout.LayoutParams.MATCH_PARENT));

                pickedImageContainer.addView(productImageView);

                Glide.with(getActivity())
                        .load(mClipData.getItemAt(pickedImageCount).getUri())
                        .fitCenter().placeholder(R.drawable.map_default)
                        .error(R.drawable.map_default)
                        .into(productImageView);
            }
        } else {
            Toast.makeText(getActivity(), "You haven't picked any Image",
                    Toast.LENGTH_LONG).show();
        }
    } catch (Exception e) {
        Toast.makeText(getActivity(), "Error: Something went wrong " + e.getMessage(), Toast.LENGTH_LONG)
                .show();
    }
    super.onActivityResult(requestCode, resultCode, data);
}

Answer 6

我认为android不支持选择多个图像。为此需要使用一些库。 我也被困在同一个

https://github.com/luminousman/MultipleImagePick

这个人帮助了我。

Answer 7

This is manifest file code for app to get consider you are sending images to your app

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.appshare"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                 <action
                android:name="android.intent.action.SEND_MULTIPLE" />
                 <action
                android:name="android.intent.action.SEND" />
            <category
                android:name="android.intent.category.DEFAULT" />
            <data
                android:mimeType="image/*" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

Program code...

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Log.d("MainActivity", "on Create ");

        if (Intent.ACTION_SEND_MULTIPLE.equals(getIntent().getAction())&& getIntent().hasExtra(Intent.EXTRA_STREAM))
        {
                ArrayList<Parcelable> list =
                        getIntent().getParcelableArrayListExtra(Intent.EXTRA_STREAM);
                            for (Parcelable parcel : list) {
                               Uri uri1 = (Uri) parcel;
                               Log.d("MainActivity", "on Create uri1 " + uri1);
                               String sourcepath=getPath(uri1);
                               Log.d("MainActivity", "on Create sourcepath " + sourcepath);
                               /// do things here with each image source path.
                           }
                            //Commented by Aishwary coz I want to open the app after selecting images otherwise uncomment to just select 
                            //finish();
            }else{
                // This part is of single image by Aishwary
                Uri imageUri =(Uri) getIntent().getExtras().get(Intent.EXTRA_STREAM);
                Log.d("MainActivity", "on Create ImageUri " + imageUri);
            }
            }

    public  String getPath(Uri uri) {
        String[] projection = { MediaStore.Images.Media.DATA };
        Cursor cursor = managedQuery(uri, projection, null, null, null);
        startManagingCursor(cursor);
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
        }

    }

This will allow you to get source path and images url . Now you can make array for url and use this url as you want...

Answer 8

int SELECT_PICTURE=1;
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"),SELECT_PICTURE);
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    try {
        switch (requestCode) {
            case SELECT_PICTURE:
                Uri selectedImageUri = data.getData();
                imgPerview.setBackgroundColor(Color.TRANSPARENT);
                LinearLayout.LayoutParams vp = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
                imgPerview.setLayoutParams(vp);
                imgPerview.setScaleType(ImageView.ScaleType.FIT_XY);
                imgPerview.setImageURI(selectedImageUri);
                uri = selectedImageUri;
        }
    }
    catch (Exception ex)
    {}
}

Answer 9

您可以使用图像的Uri存储其位置 在MainActivity.java

ArrayList<Uri> Images = new ArrayList<>();
...
...


public void PickImagesIntent(){
    Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
    intent.setType("image/*");
    intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
    startActivityForResult(Intent.createChooser(intent, "Select Picture"), PICK_IMAGES);
}

   
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (resultCode == RESULT_OK) {
        if (requestCode == PICK_IMAGES) {
            if (data.getClipData() != null) {
                ClipData mClipData = data.getClipData();
                for (int i = 0; i < mClipData.getItemCount(); i++) {
                    ClipData.Item item = mClipData.getItemAt(i);
                    Uri imageUri = item.getUri();
                    Images.add(imageUri);
                }
            } else if (data.getData() != null) {
                Uri imageUri = data.getData();
                Images.add(uri);
            }
        }
    }
}

您可以将其以字符串形式发送到另一个类（ViewImage.java）

Intent ImageIntent = new Intent(this,ViewImage.class);
ImageIntent.putExtra("imageUri",Images.get(i).toString());
stratActivity(ImageIntent);

要在另一个类（ViewImage.java）中接收它

Intent intent = getIntent();
String imageUriString = intent.getStringExtra("imageUri");
Uri uri = Uri.parse(imageUriSrting);

要将其设置为ImageView

ImageView imageView = (ImageView)findViewById(##id##);
imageView.setImageURI(uri);