问题
I am trying to save the image in imageview alongwith the other fields that user inputs. I wish to store the image in database and it will be retrieved on other page when the data is to be viewed. What changes do i need to make in my "NewPat.java" as well as "PatientInfoDB.java". Here's my code..
public class NewPat extends Activity implements OnClickListener{
//Display pic
ImageView iv;
Intent i;
final static int cameraData=0;
Bitmap bmp;
//from gallery
Button buttonLoadImage;
private static int RESULT_LOAD_IMAGE = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.newpat);
Initialize();
setCurrentDate();
addButtonListener();
//Display pic
InputStream is=getResources().openRawResource(R.drawable.ic_launcher);
bmp=BitmapFactory.decodeStream(is);
}
private void Initialize() {
//Display pic
ib=(Button)findViewById(R.id.ibTakePic);
iv=(ImageView)findViewById(R.id.ivReturnedPic);
buttonLoadImage = (Button) findViewById(R.id.bLoadPicture);
ib.setOnClickListener(this);
buttonLoadImage.setOnClickListener(this);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.bsave:
//Collecting data from edittexts
// getting Name
first = fname.getText().toString();
middle = mname.getText().toString();
last = lname.getText().toString();
//getting the id of selected radio button
int genderId = radiogrp.getCheckedRadioButtonId();
genderButton = (RadioButton) findViewById(genderId);
gender = genderButton.getText().toString();
//Getting DOB
date = dob.getText().toString();
//getting age
age= setage.getText().toString();
//getting admission date
admm =admitdate.getText().toString();
//getting address
addr = address.getText().toString();
//getting email
email=emailid.getText().toString();
//getting phone
phone = contact.getText().toString();
// How do i collect the image from imageview????
//Inserting in PatientinfoDB
PatientInfoDB entry = new PatientInfoDB(NewPat.this);
entry.open();
// here i need to pass the image along with other parameters in database
entry.createEntry(first,middle,last,gender,date,age,admm,addr,email,phone);
entry.close();
break;
//camera case
case R.id.ibTakePic:
Intent takePicture = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(takePicture, 0);//zero can be replaced with any action code
break;
case R.id.bLoadPicture:
Intent pickPhoto = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(pickPhoto , 1);//one can be replaced with any action code
break;
}
}
Database code
public class PatientInfoDB {
public static final String KEY_ROWID = "_id";
public static final String KEY_FNAME = "pat_fname";
public static final String KEY_MNAME = "pat_mname";
public static final String KEY_LNAME="pat_lname";
public static final String KEY_GENDER="pat_gender";
public static final String KEY_DOB="pat_dob";
public static final String KEY_AGE="pat_age";
public static final String KEY_ADMISSION="pat_admission";
public static final String KEY_ADDRESS="pat_address";
public static final String KEY_CONTACT="pat_phone";
public static final String KEY_EMAILID="pat_email";
public static final String KEY_PHOTO = "pic_dp";
private static final String DATABASE_NAME = "PatientdataDB";
private static final String DATABASE_TABLE = "PersonalDetails";
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
db.execSQL("CREATE TABLE " + DATABASE_TABLE + " (" +
KEY_ROWID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
KEY_FNAME + " TEXT NOT NULL, " +
KEY_MNAME + " TEXT NOT NULL, " +
KEY_LNAME + " TEXT NOT NULL, " +
KEY_GENDER + " TEXT NOT NULL, " +
KEY_DOB + " TEXT NOT NULL, " +
KEY_AGE + " TEXT NOT NULL, " +
KEY_ADMISSION + " TEXT NOT NULL, " +
KEY_ADDRESS + " TEXT NOT NULL, " +
KEY_EMAILID + " TEXT NOT NULL, " +
KEY_CONTACT + " TEXT NOT NULL, " +
KEY_PHOTO + " BLOB);"
);
}
public long createEntry(String first, String middle, String last,String gender, String date, String age, String admm, String addr, String email, String phone, byte[] image) {
// TODO Auto-generated method stub
ContentValues cv = new ContentValues();
cv.put(KEY_FNAME, first);
cv.put(KEY_MNAME, middle);
cv.put(KEY_LNAME, last);
cv.put(KEY_GENDER, gender);
cv.put(KEY_DOB, date);
cv.put(KEY_AGE, age);
cv.put(KEY_ADMISSION, admm);
cv.put(KEY_ADDRESS, addr);
cv.put(KEY_CONTACT, phone);
cv.put(KEY_EMAILID, email);
cv.put(KEY_PHOTO, image);
//startobv
//vc.put(KEY_DATETIME, value)
return ourDatabase.insert(DATABASE_TABLE, null, cv);
}
OnActivityResult
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
switch(requestCode) {
case 0:
if(resultCode == RESULT_OK){
Uri selectedImage = data.getData();
iv.setImageURI(selectedImage);
}
break;
case 1:
if(resultCode == RESULT_OK){
Uri selectedImage = data.getData();
iv.setImageURI(selectedImage);
}
break;
}
}
//Page where the pic has to b displayed i added this piece of code
PatientInfoDB entry = new PatientInfoDB(this);
entry.open();
Bitmap bm=entry.getPhoto();
iv.setImageBitmap(bm);
// Added this method in my database i.e. "PatientInfoDB.java"
public Bitmap getPhoto(){
Cursor c = ourDatabase.rawQuery("SELECT pic_dp FROM PersonalDetails ;", null);
byte[] byteArray = c.getBlob(0);
Bitmap bm = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
return bm;
}
But i got the error "android.database.CursorIndexOutOfBoundException:Index -1 requested,with a size of 2
回答1:
Do this to get the bitmap from the imageview:
Bitmap myBitmap= ((BitmapDrawable)image.getDrawable()).getBitmap();
then you need to convert the bitmap to a byte array:
ByteArrayOutputStream stream = new ByteArrayOutputStream();
myBitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
then you can store it as a blob in the DB
EDIT:
to retrieve the bimap you get the byte array from the db and convert it back to a bitmap
Cursor c = db.raw......
byte[] byteArray = c.getBlob(0);
Bitmap bm = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
Now you can just set the ImageView bitmap to the retrieved bitmap.
回答2:
Instead of storing and retrieving from DB, since your usage is for one time, you should store the image in a public static variable which you can access across whole project.
public static Uri publicSelectedImage; // Write this in NewPat at class level.
in your onActivityResult() assign value to this variable as following
Uri selectedImage = data.getData();
publicSelectedImage = selectedImage; // write this line.
Now from any other activity you can access this variable as following way,
Uri publicImage = NewPat.publicSelectedImage;
来源：https://stackoverflow.com/questions/23292814/saving-image-clicked-from-camera-or-loaded-from-gallery-in-database-and-retrievi