问题
I have been able to take a picture using a camera or take from a gallery and show it in an ImageView using this code. What I need to do now is to use that picture and upload it to Parse. I have been googling here and there to do this, and I haven't found the right way to do it. Can someone please help me with this? Is it possible to upload the image from the ImageView? Thank you.
protected Button mFromCamera;
protected Button mFromGallery;
protected ImageView mImageView;
private static final int CAMERA_REQUEST = 1888;
private static final int SELECT_PHOTO = 100;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Initialize ImageView
mImageView = (ImageView) findViewById(R.id.ImgPrev);
//Initialize Camera
mFromCamera = (Button) findViewById(R.id.FromCamera);
//use camera
mFromCamera.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
} //use camera end
});
//initialize button
mFromGallery = (Button) findViewById(R.id.FromGallery);
//pick a photo
mFromGallery.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Intent photoPickerIntent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
photoPickerIntent.setType("image/*");
startActivityForResult(photoPickerIntent, SELECT_PHOTO);
}
});//pick a photo end
}
//previewing Image
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
//from the gallery
case SELECT_PHOTO:
if (requestCode == SELECT_PHOTO && resultCode == RESULT_OK && null!= data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
mImageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
}
break;
//from the camera
case CAMERA_REQUEST:
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
Bitmap photo = (Bitmap) data.getExtras().get("data");
mImageView.setImageBitmap(photo);
}
break;
}
}//Preview Image End
回答1:
reading your answer :
I already followed the code that you have before. I was able to upload the image to parse. but I dont know how to switch the drawable source to be my image from camera/gallery or imageview. – stanley santoso
to :
Abhishek Bansal
I understand that your problem is not parsing your image ?
To try to answer your question :
I dont know how to switch the drawable source to be my image from camera/gallery or imageview.
1 - R.drawable.androidbegin seems to be your problem BUT the fact is that you already have your bitmap to parse in your code :
from gallery ->
mImageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
from camera ->
Bitmap photo = (Bitmap) data.getExtras().get("data");
2 - So I would suggest to declare a variable of type Bitmap at the beginning of your code
private Bitmap yourbitmap;
3 - then assign the bitmap for the gallery and the camera in your code and use it to parse it.
...
yourbitmap = BitmapFactory.decodeFile(picturePath);
...
yourbitmap = (Bitmap) data.getExtras().get("data");
...
4 - finally you can use your bitmap like so :
// Bitmap bitmap = BitmapFactory.decodeResource(getResources(),
// R.drawable.androidbegin);
// Convert it to byte
ByteArrayOutputStream stream = new ByteArrayOutputStream();
// Compress image to lower quality scale 1 - 100
yourbitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] image = stream.toByteArray();
...
回答2:
there are good tutorials available on internet. Essentially following is what you need to do
Bitmap bitmap = BitmapFactory.decodeResource(getResources(),
R.drawable.androidbegin);
// Convert it to byte
ByteArrayOutputStream stream = new ByteArrayOutputStream();
// Compress image to lower quality scale 1 - 100
bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] image = stream.toByteArray();
// Create the ParseFile
ParseFile file = new ParseFile("androidbegin.png", image);
// Upload the image into Parse Cloud
file.saveInBackground();
// Create a New Class called "ImageUpload" in Parse
ParseObject imgupload = new ParseObject("ImageUpload");
// Create a column named "ImageName" and set the string
imgupload.put("ImageName", "AndroidBegin Logo");
// Create a column named "ImageFile" and insert the image
imgupload.put("ImageFile", file);
// Create the class and the columns
imgupload.saveInBackground();
source: this tutorial
also see this question How to upload an image in parse server using parse api in android
回答3:
Click here to get AsyncHttpClient library and upload your image. it is fats to upload your image.
public void uploadImage(Bitmap img_bit)
{
AsyncHttpClient imgupload = new AsyncHttpClient();
RequestParams params = new RequestParams();
if (img_bit != null) {
byte[] imagebyte;
ByteArrayOutputStream bao = new ByteArrayOutputStream();
img_bit.compress(Bitmap.CompressFormat.PNG, 100, bao);
imagebyte = bao.toByteArray();
params.put("image", new ByteArrayInputStream(imagebyte), "test"+ System.currentTimeMillis() + ".png");
}
imgupload.post("url",params, new AsyncHttpResponseHandler() {
@Override
public void onSuccess(int arg0, Header[] arg1,
byte[] arg2) {
System.out.println("Image Upload successfully");
}
@Override
public void onFailure(int arg0, Header[] arg1,
byte[] arg2, Throwable arg3) {
System.out.println("faile the data");
}
});
}
来源：https://stackoverflow.com/questions/31227547/how-to-upload-image-to-parse-in-android