How to show last taken image from specific folder? - android

I want to make a feature like default camera feature did. There are a left thumbnail image which show last taken image. When click to the photo, it show the photo and I can slide to view next photo.
My photos is put on "Abc/Pictures" folder.

To get the latest modified file in folder for specific extension
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.comparator.LastModifiedFileComparator;
import org.apache.commons.io.filefilter.WildcardFileFilter;
...
/* Get the newest file for a specific extension */
public File getTheNewestFile(String filePath, String ext) {
File theNewestFile = null;
File dir = new File(filePath);
FileFilter fileFilter = new WildcardFileFilter("*." + ext);
File[] files = dir.listFiles(fileFilter);
if (files.length > 0) {
/** The newest file comes first **/
Arrays.sort(files, LastModifiedFileComparator.LASTMODIFIED_REVERSE);
theNewestFile = files[0];
}
return theNewestFile;
}
Addition
To get all files or only png and jpeg use
new WildcardFileFilter("*.*");
new WildcardFileFilter(new String[]{"*.png", "*.jpg"});

Use below code find latest images from folder and I hope you are saving images with there time stamp which is standard appraoch.
File path = new File(Environment.getExternalStorageDirectory()
.getPath() + "/Abc/Pictures");
int imagesCount= path .listFiles().length; // get the list of images from folder
Bitmap bmp = BitmapFactory.decodeFile(sdcardPath.listFiles()[imagesCount - 1].getAbsolutePath());
eachImageView.setImageBitmap(bmp); // set bitmap in imageview

Related

Print logo on top of recipe android

Hello guys i have the problem that i want to include an image in my project and when the user click the print button the image will be printet followed by other information but i dont get it to pass the image path to the PrintTool
PrintTool.printPhotoWithPath(imagePath, this);
and the first line in printtool are this
public static void printPhotoWithPath(String filePath, Context context) {
// Get the picture based on the path
File mfile = new File(filePath/*path*/);
if (mfile.exists()) {
Bitmap bmp = BitmapFactory.decodeFile(filePath/*path*/);
byte[] command = decodeBitmap(bmp);
printPhoto(command, context);
}else{
Log.e("PrintTools_58mm", "the file isn't exists");
}
}
So my problem is, how can i get the path from my image in drawable folder to the code?
Please remove this line
File mfile = new File(filePath/*path*/);
Provided the image is currently in your drawable directory, you can get it like this:
if (mfile.exists()) {
Bitmap bmp = BitmapFactory.decodeFile(getResources(), R.drawable.<yourDrawableName>);
byte[] command = decodeBitmap(bmp);
printPhoto(command, context);
}else{
Log.e("PrintTools_58mm", "the file isn't exists");
}
NB Replace with the name of your Drawable.
If you require the path of the Bitmap, by default it is
String imageUri = "drawable://" + R.drawable.image;
Refer to this.
i hope this helps you
File file = new File(String.valueOf(R.mipmap.imgeName));
file.getPath();

android-where to store lots of images and how to move them while installing

I'm writing an android app that contains about 500 images .
there are somethings that make me worry, I don't want to use internet.
1-the application size will be very big , is there anyway to moving images to sd card while installing? some devices may don't have this amount of space on the phone .
2-should I make 3 images for hdpi , ldpi and mdpi ?
You can put you image in asset folder. If you want to transfer image from assets to SD Card then you can't do like this.
But you can do by one way. You put your image on server and at 1st time when you will open app you can download it and save it in SD Card and then access from there.
Yes, it will be big. No, you can't remove them from your package.
No, you can make only hdpi images. Android will scale them automatically (which may slow down a bit the app).
Suggestion - use internet. Since the user has internet to download your app, he can wait to download the resources on first start. Also it give you the ability to add/remove files via online configuration. Just imagine if you have to add 1 image and upload new version - this means that the user will have to download the same huge package again.
I had a similar requirement - include a bunch of images in the app, but in my case, the image had to be accessible by any user or app, not just the app that unpacked them. I stored them in the res/raw folder and copied them to user space on start up:
private void loadCopyResources() {
// copy resources to space any activity can use
String sourceName;
String resourceName;
String fileName;
int resource;
String typeName = sourceSink.Types.photo.toString();
for (sourceSink.Sources source: sourceSink.Sources.values() ){
for (int i = 0; i< photoFileCount; i++) {
sourceName = source.toString();
resourceName = sourceName + "_" + typeName + (i+1); // i.e. dropbox_photo2
fileName = resourceName + ".jpg"; // files requires extension
resource = getResources().getIdentifier(resourceName, "raw", "com.example.myapp");
createExternalStoragePublicFile(typeName,fileName, resource); // copy it over
}
}
}
void createExternalStoragePublicFile(String fType, String fname, int res ) {
// Create a path where we will place our picture in the user's
// public pictures directory. Note that you should be careful about
// what you place here, since the user often manages these files. For
// pictures and other media owned by the application, consider
// Context.getExternalMediaDir().
File path = null;
if (((fType.equals(sourceSink.Types.photo.toString())) || (fType.equals(sourceSink.Types.file.toString())) ) ){
path = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES);
}
if (fType.equals(sourceSink.Types.music.toString())) {
path = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_MUSIC);
}
if (fType.equals(sourceSink.Types.video.toString())) {
path = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_MOVIES);
}
File file = new File(path, "/" + fname);
try {
// Make sure the Pictures directory exists.
path.mkdirs();
// Very simple code to copy a picture from the application's
// resource into the external file. Note that this code does
// no error checking, and assumes the picture is small (does not
// try to copy it in chunks). Note that if external storage is
// not currently mounted this will silently fail.
InputStream is = getResources().openRawResource(res);
OutputStream os = new FileOutputStream(file);
byte[] data = new byte[is.available()];
is.read(data);
os.write(data);
is.close();
os.close();
scanMedia(file);
} catch (IOException e) {
// Unable to create file, likely because external storage is
// not currently mounted.
Log.w("ExternalStorage", "Error writing " + file, e);
}
}
sourceSink, which I didn't include, is just a list of file names and file types I needed copied.

Takes images from gallery

My app takes images from gallery and copies to a subfolder. But, the images that are copied are comes to gallery as a copy of original one from different location.
How to prevent it? please help me.
this is my code to save to a pre defined folder....
protected String saveBitmap(Bitmap bm, String path) throws Exception {
String tempFilePath="/sdcard/AuFridis/Events/Images/"+System.currentTimeMillis()+"myEventImg.jpg";
File tempFile = new File(path+"/"+System.currentTimeMillis()+"myEventImg.jpg");
// File tempFile = new File("/sdcard/Notes");
tempFile.createNewFile();
if (!tempFile.exists()) {
if (!tempFile.getParentFile().exists()) {
tempFile.getParentFile().mkdirs();
}
}
//tempFile.delete();
//tempFile.createNewFile();
int quality = 100;
FileOutputStream fileOutputStream = new FileOutputStream(tempFile);
BufferedOutputStream bos = new BufferedOutputStream(fileOutputStream);
bm.compress(CompressFormat.JPEG, quality, bos);
bos.flush();
bos.close();
//bm.recycle();
Log.i("On saveBitmap Function - retrieved file path", "---"+tempFilePath);
return tempFilePath;
}
Are you trying to hide the images from the gallery? Android by default scans the memory of the device and puts all photos it finds into the gallery. The device is most likely seeing the repeated name and labeling. Just change the image name.
By default, android scans the SD card and adds all images it finds to the gallery. If you copy an image from gallery to another folder, that folder will automatically be added to the gallery. To prevent this, add an empty file with name .nomedia to your destination folder - and your copied images will not show in the gallery.

Move Images to gallery programmatically in Android

This question may have been asked elsewhere but did not work for me.
I save images in the app-private folder and the user has the option to move it to Android gallery. So my question is how to do that?
This is my code
String outPath = "new path which is gallery";
File outFile = new File(outPath);
// File (or directory) to be String
sourcePath="image in the app-private folder";
File file = new File(sourcePath);
// Destination directory
boolean success = file.renameTo(new File(outFile, "name of image"));
System.out.println("success: "+success);
success here is always "false"

Android get image path from drawable as string

Is there any way that I can get the image path from drawable folder in android as String. I need this because I implement my own viewflow where I'm showing the images by using their path on sd card, but I want to show a default image when there is no image to show.
Any ideas how to do that?
These all are ways:
String imageUri = "drawable://" + R.drawable.image;
Other ways I tested
Uri path = Uri.parse("android.resource://com.segf4ult.test/" + R.drawable.icon);
Uri otherPath = Uri.parse("android.resource://com.segf4ult.test/drawable/icon");
String path = path.toString();
String path = otherPath .toString();
based on the some of above replies i improvised it a bit
create this method and call it by passing your resource
Reusable Method
public String getURLForResource (int resourceId) {
//use BuildConfig.APPLICATION_ID instead of R.class.getPackage().getName() if both are not same
return Uri.parse("android.resource://"+R.class.getPackage().getName()+"/" +resourceId).toString();
}
Sample call
getURLForResource(R.drawable.personIcon)
complete example of loading image
String imageUrl = getURLForResource(R.drawable.personIcon);
// Load image
Glide.with(patientProfileImageView.getContext())
.load(imageUrl)
.into(patientProfileImageView);
you can move the function getURLForResource to a Util file and make it static so it can be reused
If you are planning to get the image from its path, it's better to use Assets instead of trying to figure out the path of the drawable folder.
InputStream stream = getAssets().open("image.png");
Drawable d = Drawable.createFromStream(stream, null);
I think you cannot get it as String but you can get it as int by get resource id:
int resId = this.getResources().getIdentifier("imageNameHere", "drawable", this.getPackageName());
First check whether the file exists in SDCard. If the file doesnot exists in SDcard then you can set image using setImageResource() methodand passing default image from drawable folder
Sample Code
File imageFile = new File(absolutepathOfImage);//absolutepathOfImage is absolute path of image including its name
if(!imageFile.exists()){//file doesnot exist in SDCard
imageview.setImageResource(R.drawable.defaultImage);//set default image from drawable folder
}

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