Develop Reference

Don't show image in ImageView

I have in my phone two folders Card and Phone. I create folder MyPhone in the folder Card and added in her an image flap.png. This image I want to show in the element ImageView. I want to use this variant. What am I doing wrong? Thank you.
button1.setOnClickListener {
var intent: Intent = Intent(Intent.ACTION_VIEW)
intent.setDataAndType(Uri.parse("/mnt/sdcard/MyPhoto/flap.png"),"image/*")
imageView1.setImageURI(intent.data)
}

if you want only this image you can use below code
File imgFile = new File("/mnt/sdcard/MyPhoto/flap.png");
if(imgFile.exists()){
Bitmap bm = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
imageView1.setImageBitmap(bm);
}else{
Log.e("tag","FILE NOT EXIST")
}

I am unable to get the currently taken image in the listview

I am unable to load the image in the listview, i have done like this in my adapterclass
File imgFile = new File(image.get(0));
System.out.println(" ### imgFile" + imgFile);
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
while here image is Array,but while giving the string path i am able to view the image to my whole listview but i want to to load the image for upcoming item which is to be loaded in the list view ,please help me thanks in advance.

GetView(...int position..){
File imgFile = new File(image.get(position));
System.out.println(" ### imgFile" + imgFile);
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
..
// Set image here..
Holder.mImageView.setImageBitmap(myBitmap);
..
}

Android: Displaying .jpg image from sdcard using ImageView

I am trying to display a .jpg from my sd card into an imageview in my layout. I dont get any errors, but nothing gets displayed. I would appreciate any help. Thanks
EDIT:
layout1 = (LinearLayout) findViewById(R.id.layout1Activity);
String imgFile = Environment.getExternalStorageDirectory() + "/Apple.jpg";
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile);
ImageView myImage = new ImageView(this);
myImage.setImageBitmap(myBitmap);
layout1.addView(myImage);

do NOT access the SD card directly, try accessing it trough Environment. Like this:
String imageDir = Environment.getExternalStorageDirectory()+"/apple.jpg";
and then you can call BitmapFactory:
Bitmap myBitmap = BitmapFactory.decodeFile(imageDir);

How to delete a bitmap image which is stored on the sd card in android

In my application I have a grid view of images and when a user clicks an image then it will open the image in fullscreen. The images are loaded from the SD card as follows:
File sdDir = new File("mnt/sdcard/Pictures");
File[] sdDirFiles = sdDir.listFiles();
for(File singleFile : sdDirFiles) {
String filePath = singleFile.getAbsolutePath();
Bitmap bmp = scaleBitmap(filePath);
photos.add(bmp);
}
mThumbIds = photos.toArray(new Bitmap[(photos.size())]);
}
Scale bitmap is a method which decodes each file into a bitmap and then scales the bitmap before returning it.
I then have another Activity which loads the images fullscreen once they have been clicked. I have a menu button "Delete", from which I would like to delete the file on the sdcard which represents the bitmap I see on the screen.
The problem I have is that there is no way to get the file name from the Bitmap object, so therefore I cannot delete the file.
Any help will be greatly appreciated.

You could extend the Bitmap class and add a filename field. Or, you could pass the filename to your new activity in the intent bundle.

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
}