Develop Reference

Set Image Wallpaper Intent in Flutter

Hi i have tried different ways to set my downloaded images from server as wallpaper using the native android intent in flutter but so far i am unable to implement it.
I have tried the intent package from pub.dev flutter but this code doesn't make my image pass through intent.
android_intent. Intent()
..setAction(android_action.Action.ATTACH_DATA)
..setData(outputFileUri)
//..putExtra(Extra.EXTRA_STREAM, outputFileUri)
..addFlag(1)
..setType('image/*')
..startActivity().catchError((e) => print(e));
Anyway to fix this would be really helpful. I am also sharing the functionality i want like in the image
t,

This should work for your situation:
Intent intent = new Intent(Intent.ACTION_ATTACH_DATA);
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.setDataAndType(uri, "image/*");
intent.putExtra("mimeType", "image/*");
this.startActivity(Intent.createChooser(intent, "Set as:"));
It's also independent of the image data type.

How to set the phone wallpaper through an intent

I have some images saved on the phone internal storage in a filepath that looks like this:
/storage/emulated/0/myApp/FILENAME.jpg
I want to open an intent so that the user can set the phone wallpaper with his app of choice. Every code I tried doesn't work at all or only works with some apps. Thanks.

You can set any image in sdcard or phone by opening this intent:
Intent intent = new Intent(Intent.ACTION_SET_WALLPAPER);
startActivity(Intent.createChooser(intent, "Select Wallpaper"));
kindly add permission too:
<uses-permission android:name="android.permission.SET_WALLPAPER"></uses-permission>
for more options check this answer
P.S: You need to add permission for SET_WALLPAPER for android 6+
Update:
You can also open set wallpaper as dialog using :
Intent intent = new Intent(Intent.ACTION_ATTACH_DATA);
intent.setDataAndType(imageUri, "image/*");
intent.putExtra("jpg", "image/*");
startActivityForResult(Intent.createChooser(intent,
getString(R.string.set_as)), REQUEST_ID_SET_AS_WALLPAPER);

Starting default Set as Wallpaper intent / activity with bitmap

I have a bitmap downloaded from a url and want to start android's default set as wallpaper intent/activity passing my bitmap. I have found following solution but missing value of "R.String.set_as" and "REQUEST_ID_SET_AS_WALLPAPER".
https://stackoverflow.com/a/26869604/4767525
what should be the value of this fields?
Thanks

Don't really know about REQUEST_ID_SET_AS_WALLPAPER. I think it is related to the size of the image.
R.String.set_as is just a string: "Set as:"
Use this code:
Intent intent = new Intent(Intent.ACTION_ATTACH_DATA);
intent.setDataAndType(contentUri, "image/*");
intent.putExtra("mimeType", "image/*");
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
startActivity(Intent.createChooser(
intent, "Set as:"));

Android - Set Wallpaper using the "Set Wallpaper" intent

The question was asked here and here but there was no real answer.
Android has a built-in "Set Wallpaper" feature, such feature is available when starting an activity intent with mime "image/jpeg" or long-tapping on images in browser.
My question is: how do I programmatically invoke the built-in "Set Wallpaper" feature using a file Uri?

Seems like there is no answer to the question however I did discover a workaround:
Intent intent = new Intent(Intent.ACTION_ATTACH_DATA);
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.setDataAndType(uri, "image/jpeg");
intent.putExtra("mimeType", "image/jpeg");
this.startActivity(Intent.createChooser(intent, "Set as:"));

For me work only:
Intent intent = new Intent(Intent.ACTION_ATTACH_DATA);
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.setDataAndType(uri, "image/*");
intent.putExtra("mimeType", "image/*");
this.startActivity(Intent.createChooser(intent, "Set as:"));
If mime "image/jpeg" apps not found image.

If your app crashes after choosing the application you want to set wallpaper with, you need to add
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
A typical example is attachments in a email app. Access to the emails should be protected by permissions, since this is sensitive user data. However, if a URI to an image attachment is given to an image viewer, that image viewer no longer has permission to open the attachment since it has no reason to hold a permission to access all email.
The solution to this problem is per-URI permissions: when starting an activity or returning a result to an activity, the caller can set Intent.FLAG_GRANT_READ_URI_PERMISSION and/or Intent.FLAG_GRANT_WRITE_URI_PERMISSION. This grants the receiving activity permission access the specific data URI in the intent, regardless of whether it has any permission to access data in the content provider corresponding to the intent.
https://developer.android.com/guide/topics/permissions/overview
val intent = Intent(Intent.ACTION_ATTACH_DATA)
.apply {
addCategory(Intent.CATEGORY_DEFAULT)
setDataAndType(uri, "image/*")
putExtra("mimeType", "image/*")
addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
}
startActivity(Intent.createChooser(intent, "Set as:"))

And for me work only
Intent intent = new Intent();
intent.setAction(Intent.ACTION_ATTACH_DATA);
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.setDataAndType(ContactsContract.Contacts.CONTENT_URI, "image/*");
intent.putExtra("mimeType", "image/*");
startActivityForResult(Intent.createChooser(intent, "Select service:"), position);
position - it is your : getIntent().getExtras().getInt("id_test");

How to get image path Uri and Crop for all devices

I have my main project which gets images from certain sources (returns Uri). The next step was to crop the image to scale (touch input). I recently found out that some phone manufacturer mess around with the android base classes so:
com.android.camera.action.crop
doesn't always exist.
So I've found a library that does cropping: https://github.com/lvillani/android-cropimage
I've added the library into my eclipse build path and project library's.
my question is, can I open the library like so:
Intent intent = new Intent("com.android.camera.action.CROP");
//intent.setClassName("com.android.camera", "com.android.camera.CropImage");
intent.setDataAndType(uri, "image/*");
intent.putExtra("crop", "true");
intent.putExtra("output", Uri);
intent.putExtra("outputFormat", "JPEG");
startActivityForResult(intent, 1);
And then retrieve the cropped image or do I have to do something else extra?
Another question: Also will this effect my app when I put it onto market (will the user need to download or accept permission for the extra library?
I want to make sure that my app works on everything, so is this the best way of doing it? Or is there better methods, please explain. (Also keep it simple, fairly new to Android dev!, thanks!)

I installed the library and made sure it was linking to my project and was in the build path, then I simply did:
Open file manager:
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent,"Select Picture"), PICK_FROM_FILE);
Alternatively if you want to capture from camera
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra("return-data", true);
startActivityForResult(intent, GET_IMAGE_FROM_CAMERA);
Then crop image:
Intent intent = new Intent(this, com.android.camera.CropImage.class);
intent.setData(uri);
intent.putExtra("return-data", true);
startActivityForResult(intent, CROP);
I've tested this on a few devices and it's working fine and dandy. Also works with camera.