Question

这是我调用onactivity结果的代码。我正在使用一个对话框，提示从图库或相机中选择图像。相同的代码在活动中工作，但不是碎片。我已经在stackoverflow上尝试了所有以前的答案。请帮忙

AlertDialog.Builder builder = new AlertDialog.Builder(
                        getActivity());

                builder.setTitle("Choose Image Source");
                builder.setItems(new CharSequence[] { "Pick from Gallery",
                        "Take from Camera" },
                        new DialogInterface.OnClickListener() {

                            @Override
                            public void onClick(DialogInterface dialog,
                                    int which) {
                                switch (which) {
                                case 0:

                                    Intent intent = new Intent(
                                            Intent.ACTION_PICK,
                                            android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI);

                                    intent.putExtra("crop", "true");
                                    intent.putExtra("aspectX", 1);
                                    intent.putExtra("aspectY", 1);
                                    intent.putExtra("outputX", 250);
                                    intent.putExtra("outputY", 250);

                                    try {

                                        intent.putExtra("return-data", true);
                                        startActivityForResult(
                                                Intent.createChooser(
                                                        intent,
                                                        "Complete action using"),
                                                PICK_FROM_GALLERY);

                                    } catch (ActivityNotFoundException e) {

                                    }

                                    break;

                                case 1:

                                    Intent takePictureIntent = new Intent(
                                            MediaStore.ACTION_IMAGE_CAPTURE);
                                    if (takePictureIntent
                                            .resolveActivity(getActivity()
                                                    .getPackageManager()) != null) {

                                        startActivityForResult(
                                                takePictureIntent,
                                                PICK_FROM_CAMERA);

                                    }

                                    break;

                                default:
                                    break;
                                }
                            }
                        });
                builder.show();





public void onActivityResult(int requestCode, int resultCode, Intent data) {
    // TODO Auto-generated method stub

    try {
        if (requestCode == PICK_FROM_GALLERY) {
            System.out.print("ho ja please");
            Bundle extras2 = data.getExtras();
            if (extras2 != null) {
                bitmap = extras2.getParcelable("data");

                Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
                        bitmap.getHeight(), Config.ARGB_8888);


                dp.setImageBitmap(output);


            }
        }

        if (requestCode == PICK_FROM_CAMERA) {

            Bundle extras = data.getExtras();
            Bitmap bitmap1 = (Bitmap) extras.get("data");

            bitmap = Bitmap.createScaledBitmap(bitmap1, 250, 250, true);

            Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
                    bitmap.getHeight(), Config.ARGB_8888);

            dp.setImageBitmap(output);



        }

Answer 1

您可以尝试使用Activity上下文调用startActivityForResult，即。

getActivity().startActivityForResult(Intent.createChooser(
                                                        intent,
                                                        "Complete action using"),
                                                PICK_FROM_GALLERY);

我使用以下代码显示图像选择器，检查这是否对您有所帮助 -

private static final int SELECT_PICTURE = 1; // Declare this variable

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

                Intent takePhotoIntent = new Intent(
                        MediaStore.ACTION_IMAGE_CAPTURE);

                String pickTitle = "Select or take picture";

                // strings.xml
                Intent chooserIntent = Intent.createChooser(pickIntent,
                        pickTitle);
                chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS,
                        new Intent[] { takePhotoIntent });

                getActivity().startActivityForResult(chooserIntent,
                        SELECT_PICTURE);

然后在您的活动中，您可以使用此 -

protected void onActivityResult(int requestCode, int resultCode,
            Intent imageReturnedIntent) {
        super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
        if (imageReturnedIntent != null) {
            if (imageReturnedIntent.getData() != null) {
                Uri selectedImage = imageReturnedIntent.getData(); // use this URI for getting and updating the fragment


            }
        }
    }

Answer 2

这是因为您的警报对话框调用了Activity.startActivityForResult而不是Fragment.startActivityForResult。如果要修复该行为，请使用对话框中的片段引用来调用startActivityForResult。

UPD：同样如上所述@Ashish Tamrakar如果被覆盖，请不要忘记调用Activity.onActivityResult方法中的super.onActivityResult

Android onactivityresult（）没有在片段中调用

2 个答案: