我一直坚持这个问题一段时间了。 我正在尝试使用相机拍照并将全尺寸照片直接保存到内存中。 我可以在没有故障的情况下保存到外部存储器，但由于某种原因，我无法让它为内部存储器工作。 下面的解决方案仅保存数据对象返回的小图片，而不是全尺寸图片。 似乎相机没有检索全尺寸图片，或者当我使用文件功能（新文件，FileOutputStream ...）时，Android没有从相机Intent中检索图像（显示空白图像）。
我阅读了所有论坛，教程并尝试了不同的方法来实现这一目标，但我还没有找到答案。我无法成为唯一一个尝试这样做的人。 你能帮帮我解决这个问题吗？ 谢谢！
这是我的代码：
String input = "1994-09-09";
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date date = df.parse(input);
System.out.println( date);
java.sql.Date sqlDate = new java.sql.Date( date.getTime() );
System.out.println( sqlDate);
我的另一个名为myCamera的类处理相机：
public class AddItem extends Fragment {
ListCell cell = new ListCell();
View view;
private Bitmap mImageBitmap;
protected myCamera cameraObject = null;
private Button saveBtn;
private Button cancelBtn;
DBSchema dbSchema;
protected boolean bdisplaymessage;
protected boolean ExternalStorage = false;
public AddItem(){
}
private class ListCell{
private EditText total;
private ImageView mImageView;
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
View rootView = inflater.inflate(R.layout.add_item, container,
false);
saveBtn = (Button) rootView.findViewById(R.id.SaveItem);
cancelBtn = (Button) rootView.findViewById(R.id.CancelItem);
cameraObject = new myCamera();
cell.total = (EditText) rootView.findViewById(R.id.item_total_Value);
cell.mImageView = (ImageView) rootView.findViewById(R.id.item_logo);
cell.mImageView.setImageResource(R.drawable.camera_icon);
cell.mImageView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dispatchTakePictureIntent();
}
});
saveBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
//save item to internal db
//get names of columns from db
bdisplaymessage = true;
dbSchema = new DBSchema();
Transaction transac = dbSchema.new Transaction();
Context context = getActivity().getApplicationContext();
//put values in content values
ContentValues values = new ContentValues();
values.put(transac.Total,cell.total.getText().toString());
StatusData statusData = ((MyFunctions) getActivity().getApplication()).statusData;
long nInsert = 0;
nInsert = statusData.insert(values,dbSchema.table_transaction);
if(nInsert!=0){
Toast.makeText(context, "inserted " + nInsert , Toast.LENGTH_LONG).show();
}
else{
Toast.makeText(context, "not inserted " + nInsert , Toast.LENGTH_LONG).show();
}
}
});
cancelBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//redirect to home page
getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.container, new LoadMenu()).commit();
}
});
return rootView;
}
// Some lifecycle callbacks so that the image can survive orientation change
@Override
public void onSaveInstanceState(Bundle outState) {
outState.putParcelable(cameraObject.BITMAP_STORAGE_KEY, mImageBitmap);
outState.putBoolean(cameraObject.IMAGEVIEW_VISIBILITY_STORAGE_KEY, (mImageBitmap != null) );
super.onSaveInstanceState(outState);
}
//take picture
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//takePictureIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
String mCurrentPhotoPath;
File f = null;
try {
//create image
f = cameraObject.setUpPhotoFile(getResources().getString(R.string.album_name),ExternalStorage, getActivity().getApplicationContext());
cameraObject.setCurrentPath(f.getAbsolutePath());
Log.d("uri_fromfile",Uri.fromFile(f).toString());
//uncomment the line below when ExternalStorage=true
//takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f));
} catch (IOException e) {
e.printStackTrace();
f = null;
mCurrentPhotoPath = null;
}
startActivityForResult(takePictureIntent, cameraObject.CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}
@Override
public void onActivityResult(int requestcode, int resultCode, Intent data) {
if (requestcode == cameraObject.CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE && resultCode == getActivity().RESULT_OK) {
handleCameraPhoto(data);
}
}
private void handleCameraPhoto(Intent data) {
setPic(data);
galleryAddPic();
}
private void setPic(Intent data) {
/* There isn't enough memory to open up more than a couple camera photos */
/* So pre-scale the target bitmap into which the file is decoded */
/* Get the size of the ImageView */
int targetW = cell.mImageView.getWidth();
int targetH = cell.mImageView.getHeight();
/* Get the size of the image */
BitmapFactory.Options bmOptions = new BitmapFactory.Options();
bmOptions.inJustDecodeBounds = true;
BitmapFactory.decodeFile(cameraObject.getCurrentPath(), bmOptions);
Log.d("image_path",cameraObject.getCurrentPath());
int photoW = bmOptions.outWidth;
int photoH = bmOptions.outHeight;
/* Figure out which way needs to be reduced less */
int scaleFactor = 1;
if ((targetW > 0) || (targetH > 0)) {
scaleFactor = Math.min(photoW/targetW, photoH/targetH);
}
/* Set bitmap options to scale the image decode target */
bmOptions.inJustDecodeBounds = false;
bmOptions.inSampleSize = scaleFactor;
bmOptions.inPurgeable = true;
/* Decode the JPEG file into a Bitmap */
Bitmap bitmap = null;
if(ExternalStorage){
bitmap = BitmapFactory.decodeFile(cameraObject.getCurrentPath(), bmOptions);
}
else{
File internalStorage = getActivity().getApplicationContext().getDir("imageDir", Context.MODE_PRIVATE);
File reportFilePath = new File(internalStorage, cameraObject.JPEG_FILE_PREFIX +"hello" + ".jpg");
String picturePath = reportFilePath.toString();
FileOutputStream fos = null;
try {
fos = new FileOutputStream(reportFilePath);
bitmap = (Bitmap) data.getExtras().get("data");
bitmap.compress(Bitmap.CompressFormat.PNG, 100 /*quality*/, fos);
fos.close();
}
catch (Exception ex) {
Log.i("DATABASE", "Problem updating picture", ex);
picturePath = "";
}
/* below is a bunch of options that I tried with decodefile, FileOutputStream... none seems to work */
//File out = new File(getActivity().getApplicationContext().getFilesDir(),cameraObject.JPEG_FILE_PREFIX + "hello");
//bitmap = BitmapFactory.decodeFile(out.getAbsolutePath());
//FileOutputStream fos = null;
//try {
//fos = new FileOutputStream(new File(getActivity().getApplicationContext().getFilesDir(),"/" + cameraObject.JPEG_FILE_PREFIX + "hello" + cameraObject.JPEG_FILE_SUFFIX).getAbsolutePath());
//bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos);
// Use the compress method on the BitMap object to write image to the OutputStream
//fos.close();
//Bitmap bitmap = null;
/*try{
FileInputStream fis = new FileInputStream(new File(getActivity().getApplicationContext().getFilesDir(),"/" + cameraObject.JPEG_FILE_PREFIX + "hello" + cameraObject.JPEG_FILE_SUFFIX).getAbsolutePath());
//getActivity().getApplicationContext().openFileInput(cameraObject.getCurrentPath());
bitmap = BitmapFactory.decodeStream(fis);
//
fis.close();
}
catch(Exception e){
Log.d("what?",e.getMessage());
bitmap = null;
}*/
/*} catch (Exception e) {
e.printStackTrace();
}*/
/*File mypath=new File(getActivity().getApplicationContext().getFilesDir(),"/" + cameraObject.JPEG_FILE_PREFIX + "hello" + cameraObject.JPEG_FILE_SUFFIX);
bitmap = BitmapFactory.decodeFile(mypath.getAbsolutePath());*/
//bitmap = (Bitmap) data.getExtras().get("data");
}
/* Associate the Bitmap to the ImageView */
cell.mImageView.setImageBitmap(bitmap);
cell.mImageView.setVisibility(View.VISIBLE);
}
private void galleryAddPic() {
Intent mediaScanIntent = new Intent("android.intent.action.MEDIA_SCANNER_SCAN_FILE");
File f = new File(cameraObject.mCurrentPhotoPath);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
getActivity().sendBroadcast(mediaScanIntent);
}
}
答案 0 :(得分：-2)
我找到了解决方案！我没有使用原生相机应用程序，而是创建了我自己的相机类，并使用相机通过回调发回的数据。工作顺利！