java - 拍照并保存到SD卡

Question

我正在尝试开发一个应用程序，您可以在其中拍照然后将它们显示在屏幕上，或者从您的 SD 卡上传图片并显示在屏幕上。目前我的应用程序可以上传并在屏幕上显示，但是当我选择拍照选项时，我可以拍照并单击保存，但是，照片不会显示在屏幕上，也不会保存到 SD 卡中.请帮忙!

public class UploadActivity extends Fragment {

    private Button bt_browse;
    private ImageView iv_photo;
    private int REQUEST_CAMERA = 0, SELECT_FILE = 1;
    private String uploadImagePath = "";

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {

        View rootView = inflater.inflate(R.layout.upload,
                container, false);
        bt_browse = (Button) rootView.findViewById(R.id.button1);
        iv_photo = (ImageView) rootView.findViewById(R.id.iv_photo);


        bt_browse.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                selectImage();
            }
        });



        return rootView;

    }



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

        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setTitle("Select 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(), "temp.jpg");
                    intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f));
                    startActivityForResult(intent, REQUEST_CAMERA);
                } else if (items[item].equals("Choose from Library")) {
                    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();
    }


    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == Activity.RESULT_OK) {
            if (requestCode == REQUEST_CAMERA) {
                File f = new File(Environment.getExternalStorageDirectory()
                        .toString());
                for (File temp : f.listFiles()) {
                    if (temp.getName().equals("temp.jpg")) {
                        f = temp;
                        break;
                    }
                }
                try {
                    Bitmap bm;
                    BitmapFactory.Options btmapOptions = new BitmapFactory.Options();

                    bm = BitmapFactory.decodeFile(f.getAbsolutePath(), btmapOptions);

                    bm = Bitmap.createScaledBitmap(bm, 70, 70, true);
                    iv_photo.setImageBitmap(bm);
                    uploadImagePath = f.getAbsolutePath();

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

                String tempPath = getPath(selectedImageUri, getActivity());
                Bitmap bm;
                BitmapFactory.Options btmapOptions = new BitmapFactory.Options();
                bm = BitmapFactory.decodeFile(tempPath, btmapOptions);
                iv_photo.setImageBitmap(bm);
                uploadImagePath = tempPath;

            }
        }
    }

    @SuppressWarnings("deprecation")
    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);

    }



    }

我还在 list 文件中添加了以下代码

<uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="21" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />

Answer 1

我用这种方法处理了这个场景:

private void getImageFromCamera() {
    Log.i("GalaNotes", "From CAMERA Setting Capture TRUE");
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    mImageCaptureUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(), "tmp_avatar_"
            + String.valueOf(System.currentTimeMillis()) + ".jpg"));
    intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, mImageCaptureUri);
    try {
        intent.putExtra("return-data", true);
        startActivityForResult(intent, PICK_FROM_CAMERA);
    } catch (ActivityNotFoundException e) {
        e.printStackTrace();
    }
}

private void getImageFromGallery() {
    Log.i("GalaNotes", "From Gallery Setting Capture TRUE");
    Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    startActivityForResult(intent, PICK_FROM_FILE);
}

在 onActivityResult() 方法中，您可以打印 Uri 或 Path 存储位置，如下所示:

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

    switch (requestCode) {

case PICK_FROM_CAMERA:


        try {

        log.i("Stored location of File",getRealPathFromURI(mImageCaptureUri));
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        break;



case PICK_FROM_FILE:
        mImageCaptureUri = data.getData();
        Log.d("PHOTO", "" + mImageCaptureUri.toString()); // UPLOAD FEEDS
        // RESPONSE
        // doCrop();
        Intent i = new Intent(activity, CropActivity.class);

        try {

            i.putExtra("imgSdcardPath", getRealPathFromURI(mImageCaptureUri));// mImageCaptureUri.toString());
            startActivityForResult(i, 212);
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        break;

}}

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