从android库中选择多个图像

Question

所以基本上我想要实现的是在Android中打开Gallery并让用户选择multiple images。现在这个问题已被提出经常，但我对答案不满意。主要是因为我在我的IDE中发现了de docs中的一些有趣内容（我稍后再回来），因此我不想使用自定义适配器而只需要使用自定义适配器。

现在我选择一张图片的代码是：

Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,"Select Picture"), 1);

现在SO和其他网站上的人们会告诉你，你有两个选择：

1）请勿使用ACTION_GET_CONTENT而是使用ACTION_SEND_MULTIPLE。  
这个不起作用。这个是根据sending文件的文档，而不是retrieving，这正是它的作用。当使用ACTION_SEND_MULTIPLE时，我在我的设备上打开了一个窗口，我必须选择一个应用程序来发送我的数据。这不是我想要的，所以我想知道人们如何通过这个解决方案实现这一目标。我想念一些东西吗？

2）实施custom Gallery。现在这是我考虑的最后一个选择，因为我不是我要搜索的东西，因为我必须自己设计风格，为什么你不能在香草画廊中选择多个图像呢？

必须有一个选项..现在我发现的有趣的是这个：
我在ACTION_GET_CONTENT。

的文档说明中找到了这个

  

如果调用者可以处理多个返回的项目（用户执行   多选），然后它可以指定EXTRA_ALLOW_MULTIPLE   表明这一点。

这非常有趣。他们在这里指的是用户可以选择多个项目的用例吗？

后来他们在文档中说：

  

您可以使用EXTRA_ALLOW_MULTIPLE来允许用户选择多个   项目

所以这很明显吧？这就是我需要的。但我的以下问题是：我可以在哪里放EXTRA_ALLOW_MULTIPLE？令人遗憾的是，我无法在 developers.android指南中找到这个位置，并且这也没有被定义为INTENT类中的常量。

任何人都可以帮我解决这个EXTRA_ALLOW_MULTIPLE？

Answer 1

通过Intent.putExtra（）方法在intent上设置EXTRA_ALLOW_MULTIPLE选项：

intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);

上面的代码应如下所示：

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"), 1);

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

Answer 2

在班级中定义这些变量：

int PICK_IMAGE_MULTIPLE = 1; 
String imageEncoded;    
List<String> imagesEncodedList;

让我们假设onClick一个按钮它应该打开图库来选择图像

 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"), PICK_IMAGE_MULTIPLE);

然后你应该覆盖onActivityResult方法

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    try {
        // When an Image is picked
        if (requestCode == PICK_IMAGE_MULTIPLE && resultCode == RESULT_OK
                    && null != data) {
            // Get the Image from data

            String[] filePathColumn = { MediaStore.Images.Media.DATA };
            imagesEncodedList = new ArrayList<String>();
            if(data.getData()!=null){

                Uri mImageUri=data.getData();

                // Get the cursor
                Cursor cursor = getContentResolver().query(mImageUri,
                            filePathColumn, null, null, null);
                // Move to first row
                cursor.moveToFirst();

                int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
                imageEncoded  = cursor.getString(columnIndex);
                cursor.close();

            } else {
                if (data.getClipData() != null) {
                    ClipData mClipData = data.getClipData();
                    ArrayList<Uri> mArrayUri = new ArrayList<Uri>();
                    for (int i = 0; i < mClipData.getItemCount(); i++) {

                        ClipData.Item item = mClipData.getItemAt(i);
                        Uri uri = item.getUri();
                        mArrayUri.add(uri);
                        // Get the cursor
                        Cursor cursor = getContentResolver().query(uri, filePathColumn, null, null, null);
                        // Move to first row
                        cursor.moveToFirst();

                        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
                        imageEncoded  = cursor.getString(columnIndex);
                        imagesEncodedList.add(imageEncoded);
                        cursor.close();

                    }
                    Log.v("LOG_TAG", "Selected Images" + mArrayUri.size());
                }
            }
        } else {
            Toast.makeText(this, "You haven't picked Image",
                        Toast.LENGTH_LONG).show();
        }
    } catch (Exception e) {
        Toast.makeText(this, "Something went wrong", Toast.LENGTH_LONG)
                    .show();
    }

    super.onActivityResult(requestCode, resultCode, data);
}

注意： 图库不能让您选择多图像，因此我们在这里打开所有图像工作室，您可以从中选择多图像。 并且不要忘记将权限添加到清单

非常重要： 的getData（）;得到一个单一的图像，我把它存储在imageEncoded String中 如果用户选择多图像 它们应该存储在列表中

所以你必须检查哪个是null才能使用其他

希望你和别人有个好的尝试

Answer 3

我希望这个答案不迟。因为图库窗口小部件默认情况下不支持多选，但您可以自定义接受多选意图的gridview。另一个选项是扩展库视图并添加您自己的代码以允许多个选择。
这是简单的库可以做到的：https://github.com/luminousman/MultipleImagePick

<强>更新：
来自@ ilsy的评论，此库中的CustomGalleryActivity使用manageQuery，已弃用，因此应将其更改为getContentResolver().query()和cursor.close()，如this answer

Answer 4

很多这些答案都有相似之处，但都缺少onActivityResult中最重要的部分，在检查data.getClipData之前检查data.getData是否为空

调用文件选择器的代码：

Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*"); //allows any image file type. Change * to specific extension to limit it
//**These following line is the important one!
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
startActivityForResult(Intent.createChooser(intent, "Select Picture"), SELECT_PICTURES); //SELECT_PICTURES is simply a global int used to check the calling intent in onActivityResult

获取所选图片全部的代码：

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if(requestCode == SELECT_PICTURES) {
        if(resultCode == Activity.RESULT_OK) {
            if(data.getClipData() != null) {
                int count = data.getClipData().getItemCount(); //evaluate the count before the for loop --- otherwise, the count is evaluated every loop.
                for(int i = 0; i < count; i++)  
                    Uri imageUri = data.getClipData().getItemAt(i).getUri();
                    //do something with the image (save it to some directory or whatever you need to do with it here) 
                }
            } else if(data.getData() != null) {
                String imagePath = data.getData().getPath();
                //do something with the image (save it to some directory or whatever you need to do with it here)
            }
        }
    }
}

请注意，Android的选择器在某些设备上提供了照片和图库。照片允许选择多个图像。 Gallery一次只允许一个。

Answer 5

初始化实例：

private String imagePath;
private List<String> imagePathList;

在 onActivityResult 中，您必须编写If-else 2块。一个用于单个图像，另一个用于多个图像。

if (requestCode == GALLERY_CODE && resultCode == RESULT_OK  && data != null){

    imagePathList = new ArrayList<>();

    if(data.getClipData() != null){

        int count = data.getClipData().getItemCount();
        for (int i=0; i<count; i++){

            Uri imageUri = data.getClipData().getItemAt(i).getUri();
            getImageFilePath(imageUri);
        }
    }
    else if(data.getData() != null){

        Uri imgUri = data.getData();
        getImageFilePath(imgUri);
    }
}

最重要的部分，从uri获取图像路径：

public void getImageFilePath(Uri uri) {

    File file = new File(uri.getPath());
    String[] filePath = file.getPath().split(":");
    String image_id = filePath[filePath.length - 1];

    Cursor cursor = getContentResolver().query(android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI, null, MediaStore.Images.Media._ID + " = ? ", new String[]{image_id}, null);
    if (cursor!=null) {
        cursor.moveToFirst();
        imagePath = cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA));
        imagePathList.add(imagePath);
        cursor.close();
    }
}

希望这可以为您提供帮助。

Answer 6

嗨，下面的代码工作正常。

 Cursor imagecursor1 = managedQuery(
    MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null,
    null, orderBy + " DESC");

   this.imageUrls = new ArrayList<String>();
  imageUrls.size();

   for (int i = 0; i < imagecursor1.getCount(); i++) {
   imagecursor1.moveToPosition(i);
   int dataColumnIndex = imagecursor1
     .getColumnIndex(MediaStore.Images.Media.DATA);
   imageUrls.add(imagecursor1.getString(dataColumnIndex));
  }

   options = new DisplayImageOptions.Builder()
  .showStubImage(R.drawable.stub_image)
  .showImageForEmptyUri(R.drawable.image_for_empty_url)
  .cacheInMemory().cacheOnDisc().build();

   imageAdapter = new ImageAdapter(this, imageUrls);

   gridView = (GridView) findViewById(R.id.PhoneImageGrid);
  gridView.setAdapter(imageAdapter);

您想要进一步澄清。 http://mylearnandroid.blogspot.in/2014/02/multiple-choose-custom-gallery.html

Answer 7

我也有同样的问题。我也希望用户可以在从画廊中挑选照片时轻松拍照。无法找到本地方式，因此我决定制作一个开源项目。它很像MultipleImagePick，但只是更好的实现方式。

https://github.com/giljulio/android-multiple-image-picker

private static final RESULT_CODE_PICKER_IMAGES = 9000;


Intent intent = new Intent(this, SmartImagePicker.class);
startActivityForResult(intent, RESULT_CODE_PICKER_IMAGES);


@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    switch (requestCode){
        case RESULT_CODE_PICKER_IMAGES:
            if(resultCode == Activity.RESULT_OK){
                Parcelable[] parcelableUris = data.getParcelableArrayExtra(ImagePickerActivity.TAG_IMAGE_URI);

                //Java doesn't allow array casting, this is a little hack
                Uri[] uris = new Uri[parcelableUris.length];
                System.arraycopy(parcelableUris, 0, uris, 0, parcelableUris.length);

                //Do something with the uris array
            }
            break;

        default:
            super.onActivityResult(requestCode, resultCode, data);
            break;
    }
}

Answer 8

试试这个IntentChooser。只需添加一些代码行，我就为您完成剩下的工作。

private void startImageChooserActivity() {
    Intent intent = ImageChooserMaker.newChooser(MainActivity.this)
            .add(new ImageChooser(true))
            .create("Select Image");
    startActivityForResult(intent, REQUEST_IMAGE_CHOOSER);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == REQUEST_IMAGE_CHOOSER && resultCode == RESULT_OK) {
        List<Uri> imageUris = ImageChooserMaker.getPickMultipleImageResultUris(this, data);
    }
}

PS：正如上面的答案所述，EXTRA_ALLOW_MULTIPLE仅适用于API＆gt; = 18.而且某些图库应用不提供此功能（Google照片和文档（com.android.documentsui）可用。

Answer 9

我从Cursor中得到了空值。 然后找到一种将Uri转换为Bitmap的解决方案，效果很好。

这是最适合我的解决方案：

@Override
public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
{

    if (resultCode == Activity.RESULT_OK) {

        if (requestCode == YOUR_REQUEST_CODE) {

            if (data != null) {

                if (data.getData() != null) {

                    Uri contentURI = data.getData();
                    ex_one.setImageURI(contentURI);

                    Log.d(TAG, "onActivityResult: " + contentURI.toString());
                    try {

                        Bitmap bitmap = MediaStore.Images.Media.getBitmap(context.getContentResolver(), contentURI);

                    } catch (IOException e) {
                        e.printStackTrace();
                    }

                } else {

                    if (data.getClipData() != null) {
                        ClipData mClipData = data.getClipData();
                        ArrayList<Uri> mArrayUri = new ArrayList<Uri>();
                        for (int i = 0; i < mClipData.getItemCount(); i++) {

                            ClipData.Item item = mClipData.getItemAt(i);
                            Uri uri = item.getUri();
                            try {
                                Bitmap bitmap = MediaStore.Images.Media.getBitmap(context.getContentResolver(), uri);
                            } catch (IOException e) {
                                e.printStackTrace();
                            }

                        }
                    }

                }

            }

        }

    }

}

Answer 10

     // for choosing multiple images declare variables
     int PICK_IMAGE_MULTIPLE = 2;
     String realImagePath;

     // After requesting FILE READ PERMISSION may be on button click
     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 Images"), PICK_IMAGE_MULTIPLE);


    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);// FOR CHOOSING MULTIPLE IMAGES
        try {
            // When an Image is picked
            if (requestCode == PICK_IMAGE_MULTIPLE && resultCode == RESULT_OK
                    && null != data) {
                if (data.getClipData() != null) {
                    int count = data.getClipData().getItemCount(); //evaluate the count before the for loop --- otherwise, the count is evaluated every loop.
                    for (int i = 0; i < count; i++) {
                        Uri imageUri = data.getClipData().getItemAt(i).getUri();
                        realImagePath = getPath(this, imageUri);
                        //do something with the image (save it to some directory or whatever you need to do with it here)
                        Log.e("ImagePath", "onActivityResult: " + realImagePath);
                    }
                } else if (data.getData() != null) {
                    Uri imageUri = data.getData();
                    realImagePath = getPath(this, imageUri);
                    //do something with the image (save it to some directory or whatever you need to do with it here)
                    Log.e("ImagePath", "onActivityResult: " + realImagePath);
                }
            }
        } catch (Exception e) {
            Toast.makeText(this, "Something went wrong", Toast.LENGTH_LONG)
                    .show();
        }
    }
     

    public static String getPath(final Context context, final Uri uri) {
        // DocumentProvider
        if (DocumentsContract.isDocumentUri(context, uri)) {
            // ExternalStorageProvider
            if (isExternalStorageDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];
    
                if ("primary".equalsIgnoreCase(type)) {
                    return Environment.getExternalStorageDirectory() + "/" + split[1];
                }
    
                // TODO handle non-primary volumes
            }
            // DownloadsProvider
            else if (isDownloadsDocument(uri)) {
    
                final String id = DocumentsContract.getDocumentId(uri);
                final Uri contentUri = ContentUris.withAppendedId(
                        Uri.parse("content://downloads/public_downloads"), Long.parseLong(id));
    
                return getDataColumn(context, contentUri, null, null);
            }
            // MediaProvider
            else if (isMediaDocument(uri)) {
                final String docId = DocumentsContract.getDocumentId(uri);
                final String[] split = docId.split(":");
                final String type = split[0];
    
                Uri contentUri = null;
                if ("image".equals(type)) {
                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                } else if ("video".equals(type)) {
                    contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                } else if ("audio".equals(type)) {
                    contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
                }
    
                final String selection = "_id=?";
                final String[] selectionArgs = new String[]{
                        split[1]
                };
    
                return getDataColumn(context, contentUri, selection, selectionArgs);
            }
        }
        // MediaStore (and general)
        else if ("content".equalsIgnoreCase(uri.getScheme())) {
            return getDataColumn(context, uri, null, null);
        }
        // File
        else if ("file".equalsIgnoreCase(uri.getScheme())) {
            return uri.getPath();
        }
    
        return null;
    }
    
    /**
     * Get the value of the data column for this Uri. This is useful for
     * MediaStore Uris, and other file-based ContentProviders.
     *
     * @param context       The context.
     * @param uri           The Uri to query.
     * @param selection     (Optional) Filter used in the query.
     * @param selectionArgs (Optional) Selection arguments used in the query.
     * @return The value of the _data column, which is typically a file path.
     */
    public static String getDataColumn(Context context, Uri uri, String selection,
                                       String[] selectionArgs) {
    
        Cursor cursor = null;
        final String column = "_data";
        final String[] projection = {
                column
        };
    
        try {
            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
                    null);
            if (cursor != null && cursor.moveToFirst()) {
                final int column_index = cursor.getColumnIndexOrThrow(column);
                return cursor.getString(column_index);
            }
        } finally {
            if (cursor != null)
                cursor.close();
        }
        return null;
    }
    
    
    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is ExternalStorageProvider.
     */
    public static boolean isExternalStorageDocument(Uri uri) {
        return "com.android.externalstorage.documents".equals(uri.getAuthority());
    }
    
    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is DownloadsProvider.
     */
    public static boolean isDownloadsDocument(Uri uri) {
        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
    }
    
    /**
     * @param uri The Uri to check.
     * @return Whether the Uri authority is MediaProvider.
     */
    public static boolean isMediaDocument(Uri uri) {
        return "com.android.providers.media.documents".equals(uri.getAuthority());
    }

这对我的功劳非常好：Get real path from URI, Android KitKat new storage access framework

Answer 11

用于从图库中选择多个图像

i.putExtra(Intent.EXTRA_ALLOW_MULTIPLE,true);

使用相机选项上传多张图片的终极解决方案，也适用于 Android Lollipop 到 Android 10、SDK 30。

private static final int FILECHOOSER_RESULTCODE   = 1;
private ValueCallback<Uri> mUploadMessage;
private ValueCallback<Uri[]> mUploadMessages;
private Uri mCapturedImageURI = null;

将此添加到 MainActivity 的 OnCreate

mWebView.setWebChromeClient(new WebChromeClient() {

            // openFileChooser for Android 3.0+

            public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType){
                mUploadMessage = uploadMsg;
                openImageChooser();
            }

            // For Lollipop 5.0+ Devices

            public boolean onShowFileChooser(WebView mWebView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) {
                mUploadMessages = filePathCallback;
                openImageChooser();
                return true;
            }

            // openFileChooser for Android < 3.0

            public void openFileChooser(ValueCallback<Uri> uploadMsg){
                openFileChooser(uploadMsg, "");
            }

            //openFileChooser for other Android versions

            public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
                openFileChooser(uploadMsg, acceptType);
            }

private void openImageChooser() {
    try {
        File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "FolderName");
        if (!imageStorageDir.exists()) {
            imageStorageDir.mkdirs();
        }
        File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg");
        mCapturedImageURI = Uri.fromFile(file);

        final Intent captureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI);

        Intent i = new Intent(Intent.ACTION_GET_CONTENT);
        i.addCategory(Intent.CATEGORY_OPENABLE);
        i.setType("image/*");
        i.putExtra(Intent.EXTRA_ALLOW_MULTIPLE,true);
        Intent chooserIntent = Intent.createChooser(i, "Image Chooser");
        chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Parcelable[]{captureIntent});

        startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

        });

onActivityResult

public void onActivityResult(final int requestCode, final int resultCode, final Intent data) {


        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == FILECHOOSER_RESULTCODE) {

            if (null == mUploadMessage && null == mUploadMessages) {
                return;
            }

            if (null != mUploadMessage) {
                handleUploadMessage(requestCode, resultCode, data);

            } else if (mUploadMessages != null) {
                handleUploadMessages(requestCode, resultCode, data);
            }
        }





    }

    private void handleUploadMessage(final int requestCode, final int resultCode, final Intent data) {
        Uri result = null;
        try {
            if (resultCode != RESULT_OK) {
                result = null;
            } else {
                // retrieve from the private variable if the intent is null

                result = data == null ? mCapturedImageURI : data.getData();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        mUploadMessage.onReceiveValue(result);
        mUploadMessage = null;

        // code for all versions except of Lollipop
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {

                result = null;

                try {
                    if (resultCode != RESULT_OK) {
                        result = null;
                    } else {
                        // retrieve from the private variable if the intent is null
                        result = data == null ? mCapturedImageURI : data.getData();
                    }
                } catch (Exception e) {
                    Toast.makeText(getApplicationContext(), "activity :" + e, Toast.LENGTH_LONG).show();
                }

                mUploadMessage.onReceiveValue(result);
                mUploadMessage = null;
            }

        } // end of code for all versions except of Lollipop






    private void handleUploadMessages(final int requestCode, final int resultCode, final Intent data) {
        Uri[] results = null;
        try {
            if (resultCode != RESULT_OK) {
                results = null;
            } else {
                if (data != null) {
                    String dataString = data.getDataString();
                    ClipData clipData = data.getClipData();
                    if (clipData != null) {
                        results = new Uri[clipData.getItemCount()];
                        for (int i = 0; i < clipData.getItemCount(); i++) {
                            ClipData.Item item = clipData.getItemAt(i);
                            results[i] = item.getUri();
                        }
                    }
                    if (dataString != null) {
                        results = new Uri[]{Uri.parse(dataString)};
                    }
                } else {
                    results = new Uri[]{mCapturedImageURI};
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        mUploadMessages.onReceiveValue(results);
        mUploadMessages = null;
    }

Answer 12

https://github.com/Sarjeetsinghbabu/Gallery 为请求图像列表创建意图

          int LAUNCH_SECOND_ACTIVITY = 101;

           Intent i = new Intent(CallMainActivity2.this, 
            GalleryFoldersActivity.class);
            startActivityForResult(i, LAUNCH_SECOND_ACTIVITY);

https://github.com/Sarjeetsinghbabu/Gallery

选择图片后获取模型列表

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

    if (requestCode == LAUNCH_SECOND_ACTIVITY) {
        if(resultCode == Activity.RESULT_OK){
            String result=data.getStringExtra("result");
            Log.d(TAG, "onActivityResult: "+result);
        }
        if (resultCode == Activity.RESULT_CANCELED) {
            //Write your code if there's no result
        }
    }
}

https://github.com/Sarjeetsinghbabu/Gallery

Answer 13

这适用于多个图像选择。还在 Google 照片中的 API 29,30 中进行了测试。

private static final int PICK_IMAGE = 2;

Intent intent = new Intent(Intent.ACTION_PICK, 
    android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
                startActivityForResult(Intent.createChooser(intent, "Select 
    images"),PICK_IMAGE);

public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
if (requestCode == PICK_IMAGE && resultCode == RESULT_OK) {
        if(data.getClipData() != null) {
            int count = data.getClipData().getItemCount();
            for(int i = 0; i < count; i++) {
            Uri imageUri = data.getClipData().getItemAt(i).getUri();
            //do what do you want to do
            }
        }
        else if(data.getData() != null) {
            Uri selectedImageUri = data.getData();
            //do what do you want to do
        }
}

Answer 14

智能Android图库，具有多种图像选择功能。

Check the demo on my blog

首先制作动作按钮，然后将其用于单个/多个

对于单张图片选择： -   - luminous.ACTION_PICK用于选择单个图像。

对于多个图像选择： -   - luminous.ACTION_MULTIPLE_PICK用于选择多个图像。

<强> MainActivity.java

// For single image
Intent i = new Intent(Action.ACTION_PICK);
startActivityForResult(i, 100);

// For multiple images
Intent i = new Intent(Action.ACTION_MULTIPLE_PICK);
startActivityForResult(i, 200);

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

        if (requestCode == 100 && resultCode == Activity.RESULT_OK) {
            adapter.clear();

            viewSwitcher.setDisplayedChild(1);
            String single_path = data.getStringExtra("single_path");
            imageLoader.displayImage("file://" + single_path, imgSinglePick);

        } else if (requestCode == 200 && resultCode == Activity.RESULT_OK) {
            String[] all_path = data.getStringArrayExtra("all_path");

            ArrayList<CustomGallery> dataT = new ArrayList<CustomGallery>();

            for (String string : all_path) {
                CustomGallery item = new CustomGallery();
                item.sdcardPath = string;

                dataT.add(item);
            }

            viewSwitcher.setDisplayedChild(0);
            adapter.addAll(dataT);
        }
    }

在AndroidManifest.xml中

<activity android:name="CustomGalleryActivity" >
            <intent-filter>
                <action android:name="luminous.ACTION_PICK" />
                <action android:name="luminous.ACTION_MULTIPLE_PICK" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
 </activity>