I m trying to refresh other page from homepage
how to possible it,Some one Help me to refresh other page
this is my code
abstract class IsSilly {
void makePeopleLaugh();
}
class _NewOrderScreenState extends State<NewOrderScreen>
with AutomaticKeepAliveClientMixin<NewOrderScreen>,IsSilly
#override
void makePeopleLaugh() {
setState(() {
isLoading=true;
});
}
same in other page how to refreshh.;....
private String getBase64String(Bitmap bitmap) {
// give your image file url in mCurrentPhotoPath
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, byteArrayOutputStream);
byte[] byteArray = byteArrayOutputStream.toByteArray();
return Base64.encodeToString(byteArray, Base64.DEFAULT);
}
Related
this must be a stupid question but please help me. How can we get the image file path in camera2basic api and display the image on the other activity's imageview? I have been trying to get the "Absolutepath" of the mFile in the project but not getting anything.
As Camera2 api is relatively complex to understand for me. Please help me.
public override void OnActivityCreated(Bundle savedInstanceState)
{
base.OnActivityCreated(savedInstanceState);
mFile = new Java.IO.File(Activity.GetExternalFilesDir(null), "pic.jpg");
mCaptureCallback = new CameraCaptureListener(this);
mOnImageAvailableListener = new ImageAvailableListener(this, mFile);
}
when we press the button, it evokes takepicture(); which has lockfocus();
private void LockFocus()
{
try
{
// This is how to tell the camera to lock focus.
mPreviewRequestBuilder.Set(CaptureRequest.ControlAfTrigger, (int)ControlAFTrigger.Start);
// Tell #mCaptureCallback to wait for the lock.
mState = STATE_WAITING_LOCK;
mCaptureSession.Capture(mPreviewRequestBuilder.Build(), mCaptureCallback,
mBackgroundHandler);
}
catch (CameraAccessException e)
{
e.PrintStackTrace();
}
}
I have showCapturePhoto which is getting the image from ImageAvailableListener
using Android.Media;
using Java.IO;
using Java.Lang;
using Java.Nio;
using Android.Util;
namespace Camera2Basic.Listeners
{
public class ImageAvailableListener : Java.Lang.Object,
ImageReader.IOnImageAvailableListener
{
private readonly File file;
private Camera2BasicFragment owner;
public ImageAvailableListener(Camera2BasicFragment fragment, File
file)
{
if (fragment == null)
throw new System.ArgumentNullException("fragment");
if (file == null)
throw new System.ArgumentNullException("file");
owner = fragment;
this.file = file;
}
//public File File { get; private set; }
//public Camera2BasicFragment Owner { get; private set; }
public void OnImageAvailable(ImageReader reader)
{
owner.mBackgroundHandler.Post(new ImageSaver(reader.AcquireNextImage(), file));
}
// Saves a JPEG {#link Image} into the specified {#link File}.
private class ImageSaver : Java.Lang.Object, IRunnable
{
// The JPEG image
private Image mImage;
// The file we save the image into.
private File mFile;
public ImageSaver(Image image, File file)
{
if (image == null)
throw new System.ArgumentNullException("image");
if (file == null)
throw new System.ArgumentNullException("file");
mImage = image;
mFile = file;
}
public void Run()
{
ByteBuffer buffer = mImage.GetPlanes()[0].Buffer;
byte[] bytes = new byte[buffer.Remaining()];
buffer.Get(bytes);
using (var output = new FileOutputStream(mFile))
{
try
{
output.Write(bytes);
}
catch (IOException e)
{
e.PrintStackTrace();
}
finally
{
mImage.Close();
}
}
Camera2BasicFragment.showCapturedPhoto(mImage);
}
}
}
}
ShowcapturePhoto
public static void showCapturedPhoto(Image img)
{
ByteBuffer buffer;
byte[] bytes;
MemoryStream memStream = new MemoryStream();
buffer = img.GetPlanes()[0].Buffer;
bytes = new byte[buffer.Capacity()];
buffer.Get(bytes);
Activity activity= new Activity();
Intent showPhoto = new Intent(activity, typeof(RetryOK));
showPhoto.PutExtra("savedImg", bytes);
showPhoto.PutExtra("zoomAmount", 1.7f / 1.4f);
showPhoto.PutExtra("focusDistance", -1.0f);
activity.StartActivity(typeof(RetryOK));
}
What I want is adding resource folder from file system for storing images and displaying them. I added the folder in the Application, and still working.
WicketTestApplication#init
getResourceSettings().getResourceFinders().add( new WebApplicationPath( getServletContext(), "C:\\image" ) );
And TestPage
public class TestPage extends WebPage {
private static final long serialVersionUID = 1L;
public TestPage() {
add( new ContextImage( "image", "C:/image/rhodes.jpg" ) );
}
}
Do I miss something?
WebApplicationPath is a IResourceFinder that will look for resources in the web application path, except in WEB-INF/ folder. So you cannot use it to load something from your file system.
I'd suggest you to use FileSystemResource[Reference] instead or a specialization of DynamicImageResource.
private static class ImageResource extends DynamicImageResource {
#Override
protected byte[] getImageData(Attributes attributes) {
PageParameters parameters = attributes.getParameters();
StringValue name = parameters.get("name");
byte[] imageBytes = null;
if (name.isEmpty() == false) {
imageBytes = getImageAsBytes(name.toString());
}
return imageBytes;
}
private byte[] getImageAsBytes(String imageName) {
// read the image from the file system, e.g. with FileInputStream(folder, imageName);
}
#Override
public boolean equals(Object that) {
return that instanceof ImageResource;
}
}
An article explaining this approach can be found at: http://wicketinaction.com/2011/07/wicket-1-5-mounting-resources/
In My application I am capturing image from camera and storing it in folder created by me. This folder is getting created in Pictures. Now I wants to save same image in my local storages's /BackUp folder.
This is code for
public class MainActivity extends Activity {
// Activity request codes
private static final int CAMERA_CAPTURE_IMAGE_REQUEST_CODE = 100;
private static final int CAMERA_CAPTURE_VIDEO_REQUEST_CODE = 200;
public static final int MEDIA_TYPE_IMAGE = 1;
public static final int MEDIA_TYPE_VIDEO = 2;
private MultipartEntity multipartEntity;
// directory name to store captured images and videos
private static final String IMAGE_DIRECTORY_NAME = "FORMS";
private Bitmap bitmap1;
private Uri fileUri; // file url to store image/video
private static String output;
private ImageView imgPreview;
private VideoView videoPreview;
private Button btnCapturePicture, btnRecordVideo;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imgPreview = (ImageView) findViewById(R.id.imgPreview);
videoPreview = (VideoView) findViewById(R.id.videoPreview);
btnCapturePicture = (Button) findViewById(R.id.btnCapturePicture);
btnRecordVideo = (Button) findViewById(R.id.btnRecordVideo);
/*
* Capture image button click event
*/
btnCapturePicture.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// capture picture
captureImage();
}
});
private void captureImage() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
// start the image capture Intent
startActivityForResult(intent, CAMERA_CAPTURE_IMAGE_REQUEST_CODE);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// if the result is capturing Image
if (requestCode == CAMERA_CAPTURE_IMAGE_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
// successfully captured the image
// display it in image view
previewCapturedImage();
} else if (resultCode == RESULT_CANCELED) {
// user cancelled Image capture
Toast.makeText(getApplicationContext(),
"User cancelled image capture", Toast.LENGTH_SHORT)
.show();
} else {
// failed to capture image
Toast.makeText(getApplicationContext(),
"Sorry! Failed to capture image", Toast.LENGTH_SHORT)
.show();
}
}
private void previewCapturedImage() {
try {
imgPreview.setVisibility(View.VISIBLE);
final Bitmap bitmap = BitmapFactory.decodeFile(fileUri.getPath(),
options);
imgPreview.setImageBitmap(bitmap1);
//imgPreview.setImageBitmap(result);
} catch (NullPointerException e) {
e.printStackTrace();
}
public Uri getOutputMediaFileUri(int type) {
return Uri.fromFile(getOutputMediaFile(type));
}
private static File getOutputMediaFile(int type) {
// External sdcard location
File mediaStorageDir = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
IMAGE_DIRECTORY_NAME);
// Create the storage directory if it does not exist
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
Log.d(IMAGE_DIRECTORY_NAME, "Oops! Failed create "
+ IMAGE_DIRECTORY_NAME + " directory");
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",
Locale.getDefault()).format(new Date());
File mediaFile;
if (type == MEDIA_TYPE_IMAGE) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator
+ "IMG_" + timeStamp + ".jpg");
}
return mediaFile;
}
Right Now this image is getting save at PICTURES/FORMS Folder. I wants to save it to FORMSBACKUP/IMAGES Folder as well.
i'm using universal image loader to populate thumbnails into gridview from assets gallary but images are loading slowly during scrolling up or down so i think because images are being loaded with it's current resolution so how i can change the resolution of the images for example i used to use createScaledBitmap to scale down the bitmap
Here is my code :
public class ImageAdapter extends BaseAdapter {
private Context mContext;
private List<String> mList;
private int mheight;
private int mwidth;
private InputStream is;
private HomePage homePage;
private ImageLoader imageLoader;
public ImageAdapter(Context context, List<String> list, int height, int width) {
mContext = context;
mList = list;
mheight = height;
mwidth = width;
ImageLoader imageLoader = ImageLoader.getInstance();
this.imageLoader = imageLoader;
}
#Override
public int getCount() {
return mList.size();
}
#Override
public Object getItem(int position) {
return mList.get(position).toString();
}
#Override
public long getItemId(int position) {
return 0;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) {
imageView = new ImageView(mContext);
} else {
imageView = (ImageView) convertView;
}
File cacheDir = new File(Environment.getExternalStorageDirectory(), "UniversalImageLoader/Cache");
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(mContext)
.threadPoolSize(5)
.memoryCacheExtraOptions(mwidth/3, mwidth/3)
.threadPriority(Thread.MIN_PRIORITY )
.memoryCache(new UsingFreqLimitedMemoryCache(5000000)) // You can pass your own memory cache implementation
.discCache(new UnlimitedDiscCache(cacheDir)) // You can pass your own disc cache implementation
.build();
imageLoader.init(config);
//
//
//display options
DisplayImageOptions options = new DisplayImageOptions.Builder()
.showStubImage(R.drawable.loading)
.showImageForEmptyUri(R.drawable.loading)
.cacheInMemory()
.cacheOnDisc()
.bitmapConfig(Bitmap.Config.RGB_565)
.imageScaleType(ImageScaleType.EXACTLY)
.build();
// // Create configuration for ImageLoader
String imString = mList.get(position);
String imageUria = "assets://"+imString;
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setLayoutParams(new GridView.LayoutParams(mwidth/3, mwidth/3));
imageLoader.displayImage(imageUria, imageView ,options );
return imageView ;
}
}
I have created a widget to display the slideshow.In firefox,everything is fine but in chrome nothing happens. After I refresh with many times, the slideshow is displayed. I don't know Why. Can you give me some ideas? Tks
This is my GWT client:
public SlideClient() {
super();
setStyleName("flexslider");
setHeight("100%");
setWidth("100%");
}
#Override
public void updateFromUIDL(UIDL uidl, ApplicationConnection client) {
this.client = client;
this.paintableId = uidl.getId();
listImage = Arrays.asList(uidl.getStringArrayAttribute("listImage"));
listUrl = Arrays.asList(uidl.getStringArrayAttribute("listUrl"));
loadImage();
checkImagesLoadedTimer.run();
}
public void display() {
m.setStyleName("slides");
m.setHeight("100%");
m.setWidth("100%");
add(m);
}
public native void slideshow() /*-{
$wnd.$('.flexslider').flexslider({slideshowSpeed: 2000});
}-*/;
public native String getURL(String url)/*-{
return $wnd.open(url,
'target=_blank')
}-*/;
private Timer checkImagesLoadedTimer = new Timer() {
#Override
public void run() {
if (loadedImageElements.size() == toLoad) {
display();
} else {
add(new Label("đang load "+loadedImageElements.size()));
checkImagesLoadedTimer.schedule(2000);
}
}
};
private void loadImage() {
for (String tmp : listImage) {
AbsolutePanel panel = new AbsolutePanel();
final Image ima = new Image(tmp);
add(new Label("before put"));
ima.addLoadHandler(new LoadHandler() {
#Override
public void onLoad(LoadEvent event) {
loadedImageElements.put(toLoad+"", ima);
slideshow();
add(new Label("đang put "+loadedImageElements.size()));
}
});
add(new Label("after put"));
panel.add(ima);
m.add(panel);
if (toLoad != 0) {
panel.setVisible(false);
}
toLoad++;
}
}
}
Did you implement an Image Loader to prepare your images before they are displayed? A clean solution would be to add the image elements to your page root as an invisible istance, wait for them to load and then use them elsewhere.
You should check out the tutorials about ImageBundling as well: ImageResource
Here's a little extract from one of my image loader classes as you requested, altough there are different ways to realize that:
private HashMap<String,ImageElement> loadedImageElements = new HashMap<String,ImageElement>();
private int toLoad = 0;
private void loadImage(final String name, String url){
final Image tempImage = new Image(url);
RootPanel.get().add(tempImage);
++toLoad;
tempImage.addLoadHandler(new LoadHandler(){
public void onLoad(LoadEvent event) {
loadedImageElements.put(name,ImageElement.as(tempImage.getElement()));
tempImage.setVisible(false);
}
});
}
The image url is retrieved via a ClientBundle-Interface pointing towards the real positions of the images.
I also implemented a timer running in the background to check if all the images have been loaded:
private Timer checkImagesLoadedTimer = new Timer(){
public void run() {
System.out.println("Loaded " + loadedImageElements.size() + "/" + toLoad + " Images.");
if(loadedImageElements.size() == toLoad){
buildWidget();
}else{
checkImagesLoadedTimer.schedule(50);
}
}
};
After everythign is ready, the original widget/page is created.
But as I said there are many ways to implement image loaders. Try out different implementations and select one that suits your needs best.