onActivityresult数据为空 [英] onActivityresult data is null

问题描述

这是我的相机应用程序，我想在其中捕获图像并对其进行裁剪，但是它拍摄的照片保存在我的"myimage"目录中，但不执行裁剪功能.场地 这是我的相机开源代码

this is my camera app in which i want to capture image and crop it but it take picture is save in my ""myimage" directory but does't perform the crop functionality. please i need a help i am an new this field this is my camera open source code

Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File file = new File(Environment.getExternalStorageDirectory().getAbsoluteFile() + "/MyImage");             
file.mkdir();          
String timestmp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());      

File images = new File(file, "QR_" + timestmp + ".jpg");
Urisavedmsg=Uri.fromFile(images); 
intent.putExtra(MediaStore.EXTRA_OUTPUT, Urisavedmsg);
startActivityForResult(intent, REQUEST_Code);

这是我的活动"结果代码，此处执行的其他任何操作

    if (requestCode == REQUEST_Code && resultCode==Activity.RESULT_OK )
        if (Urisavedmsg!=null)
        {
            File file = new File(Environment.getExternalStorageDirectory().getAbsoluteFile() + "/Myimage");

            if (Urisavedmsg!=null){
                try {
                    Uri getImage;
                    getImage=data.getData();
                    cropCapturedImage(Uri.fromFile(file));
                    cropCapturedImage(getImage);


                } catch (ActivityNotFoundException ex) {
                    String msg = "sorry your device does't support the crop the action!";
                    Toast toast = Toast.makeText(this, msg, Toast.LENGTH_LONG);
                    toast.show();


                }}
            if (requestCode == 2) {
                Bundle bundle = data.getExtras();
                Bitmap thepic = bundle.getParcelable("data");
                mImageView.setImageBitmap(thepic);

            }


        } else {
            Toast.makeText(getApplicationContext(), "some thing worng", Toast.LENGTH_LONG).show();
        }
}

这是我的裁剪方法.....

private void cropCapturedImage(Uri picUri) {
        Intent cropIntent = new Intent("com.android.camera.action.CROP");

       cropIntent.setDataAndType(picUri, "image/*");

        cropIntent.putExtra("crop", "true");

        cropIntent.putExtra("aspectX", 1);
        cropIntent.putExtra("aspectY", 1);
        cropIntent.putExtra("outputX", 256);
        cropIntent.putExtra("outputY", 256);
        cropIntent.putExtra("scale", true);
        cropIntent.putExtra("return-data", true);
        startActivityForResult(cropIntent, Crop_pic);
    }

推荐答案

尝试下面的代码，它对我来说在片段中正常工作，如果您在Activity类中执行操作，则相应地更改代码.

Try below code, it works for me properly in fragment, change code accordingly if you are performing action in Activity class.

File file = new File(Uri.parse(Environment.getExternalStorageDirectory().getAbsolutePath()+ "/picture").getPath());
                    if (!file.exists()) {
                        file.mkdirs();
                    }
capturedImageUri = Uri.fromFile(File.createTempFile("myImages" + new SimpleDateFormat("ddMMyyHHmmss", Locale.US).format(new Date()), ".jpg", file));
intent.putExtra(MediaStore.EXTRA_OUTPUT, capturedImageUri);
startActivityForResult(intent, Util.REQUEST_CAMERA);

现在onActivityResult

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == getActivity().RESULT_OK) {
        switch (requestCode) {
            case Util.REQUEST_CAMERA:
                try {
                    if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED) && !Environment.getExternalStorageState().equals(
                            Environment.MEDIA_MOUNTED_READ_ONLY)) {
                        File file = new File(Uri.parse(Environment.getExternalStorageDirectory().getAbsolutePath()+ "./myImages"+ File.separator+ "picture").getPath());
                        if (!file.exists()) {
                            file.mkdirs();
                        }

                        selectedPath1 = File.createTempFile("myImages"+ new SimpleDateFormat("ddMMyyHHmmss",Locale.US).format(new Date()),".jpg", file).toString();
                        croppedImageUri = Uri.fromFile(new File(selectedPath1));

                        Intent intent = new Intent("com.android.camera.action.CROP");
                        intent.setDataAndType(capturedImageUri, "image/*");
                        intent.putExtra("outputX", 400);
                        intent.putExtra("outputY", 400);
                        intent.putExtra("aspectX", 1);
                        intent.putExtra("aspectY", 1);
                        intent.putExtra("scale", true);
                        intent.putExtra("noFaceDetection", true);
                        intent.putExtra("output", croppedImageUri);
                        startActivityForResult(intent, Util.REQUEST_CROP_IMAGE);
        } else {
                        Toast.show(getActivity(), "Please insert memory card to take pictures and make sure it is write able");
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
                break;

            case Util.REQUEST_CROP_IMAGE:
                Logg.e(getClass().getSimpleName(), "Profile_Pic ===== " + selectedPath1);
                imgProfile.setImageURI(Uri.parse("file://" + croppedImageUri));

                break;

            default:
                break;
        }
    }
}

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