java打算在Android中的相机或图库中进行选择

Question

我正试图启动一个从相机或安卓 gallery中挑选图像的意图。我查看了THIS帖子，目前我的代码即将生效：

private Intent getPickIntent() {
    final List<Intent> intents = new ArrayList<Intent>();
    if (allowCamera) {
        setCameraIntents(intents, cameraOutputUri);
    }
    if (allowGallery) {
        intents.add(new Intent(Intent.ACTION_PICK, 安卓.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI));
    }

    if (intents.isEmpty()) return null;
    Intent result = Intent.createChooser(intents.remove(0), null);
    if (!intents.isEmpty()) {
        result.putExtra(Intent.EXTRA_INITIAL_INTENTS, intents.toArray(new Parcelable[] {}));
    }
    return result;
}

private void setCameraIntents(List<Intent> cameraIntents, Uri output) {
    final Intent captureIntent = new Intent(安卓.provider.MediaStore.ACTION_IMAGE_CAPTURE);
    final PackageManager packageManager = context.getPackageManager();
    final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0);
    for (ResolveInfo res : listCam) {
        final String packageName = res.activityInfo.packageName;
        final Intent intent = new Intent(captureIntent);
        intent.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name));
        intent.setPackage(packageName);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, output);
        cameraIntents.add(intent);
    }
}

当我设置allowCamera=true时，它工作正常

当我设置allowGallery=true时，它会显示以下选择器：

但是如果我设置allowCamera=true和allowGallery =true，则显示的选择器是：

如果选择Android System，则会显示第一个选择器

我希望选择器是这样的：

如何“扩展”Android System选项

Answer 1

您可能需要为此创建一个自定义对话框：

以下是当用户单击特定按钮时要调用的方法的代码：

private void ChooseGallerOrCamera() {
    final CharSequence[] items = { "Take Photo", "Choose from Gallery",
            "Cancel" };

    AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
    builder.setTitle("Add Photo!");
    builder.setItems(items, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int item) {
            if (items[item].equals("Take Photo")) {
                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                File f = new File(android.os.Environment
                        .getExternalStorageDirectory(), "MyImage.jpg");
                intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f));
                startActivityForResult(intent, REQUEST_CAMERA);
            } else if (items[item].equals("Choose from Gallery")) {
                Intent intent = new Intent(
                        Intent.ACTION_PICK,
                        android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
                intent.setType("image/*");
                startActivityForResult(
                        Intent.createChooser(intent, "Select File"),
                        SELECT_FILE);
            } else if (items[item].equals("Cancel")) {
                dialog.dismiss();
            }
        }
    });
    builder.show();
}

以及处理onActivityResult()的代码：

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (resultCode == RESULT_OK) {
        Bitmap mBitmap;
        if (requestCode == REQUEST_CAMERA) {
            File camFile = new File(Environment.getExternalStorageDirectory()
                    .toString());
            for (File temp : camFile.listFiles()) {
                if (temp.getName().equals("MyImage.jpg")) {
                    camFile = temp;
                    break;
                }
            }
            try {

                BitmapFactory.Options btmapOptions = new BitmapFactory.Options();

                mBitmap = BitmapFactory.decodeFile(camFile.getAbsolutePath(),
                        btmapOptions);
                //Here you have the bitmap of the image from camera

            } catch (Exception e) {
                e.printStackTrace();
            }
        } else if (requestCode == SELECT_FILE) {
            Uri selectedImageUri = data.getData();

            String tempPath = getPath(selectedImageUri, MyActivity.this);
            BitmapFactory.Options btmapOptions = new BitmapFactory.Options();
            mBitmap = BitmapFactory.decodeFile(tempPath, btmapOptions);

            //Here you have the bitmap of the image from gallery
        }
    }
}

public String getPath(Uri uri, Activity activity) {
    String[] projection = { MediaColumns.DATA };
    Cursor cursor = activity
            .managedQuery(uri, projection, null, null, null);
    int column_index = cursor.getColumnIndexOrThrow(MediaColumns.DATA);
    cursor.moveToFirst();
    return cursor.getString(column_index);
}

编辑： 尝试使用以下方法：

private void letUserTakeUserTakePicture() {

    Intent pickIntent = new Intent();
    pickIntent.setType("image/*");
    pickIntent.setAction(Intent.ACTION_GET_CONTENT);
    Intent takePhotoIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    takePhotoIntent.putExtra(MediaStore.EXTRA_OUTPUT,
            Uri.fromFile(getTempFile(getActivity())));

    String pickTitle = "Select or take a new Picture"; // Or get from strings.xml
    Intent chooserIntent = Intent.createChooser(pickIntent, pickTitle);
    chooserIntent.putExtra
            (Intent.EXTRA_INITIAL_INTENTS, new Intent[]{takePhotoIntent});

    startActivityForResult(chooserIntent, Values.REQ_CODE_TAKEPICTURE);
}

Answer 2

In your linked post你可以找到解决方案。代码的不同之处在于画廊意图的创建方式：

final Intent galleryIntent = new Intent();
galleryIntent.setType("image/*");
galleryIntent.setAction(Intent.ACTION_GET_CONTENT);

不是因为ACTION_PICK你是怎么做的，而是因为ACTION_GET_CONTENT。看起来，如果列表中有一个ACTION_PICK（“容器意图”），系统会遍历它以显示拾取的内容，但一旦包含相机意图，它就不能再遍历了（因为有一个直接意图和一个容器意图）

在this answer的注释中，你可以找到ACTION_PICK和ACTION_GET_CONTENT之间的区别

有一些解决方案建议使用自定义对话框。但是这个对话框没有标准图标（参见develper docshere）。因此，我建议您继续使用您的解决方案，解决层次结构问题