Develop Reference

Magical Camera Error in onActivityResult and Path or Bitmap is null

I am using Magical Camera library to take photos. Works perfect on Android 7 but starting Android 8.0 crashing when I took photo (when calls magicalCamera.resultPhoto(requestCode, resultCode, data); on onActivityResult) its crashing. Shows error Attempt to invoke virtual method 'int android.graphics.Bitmap.getWidth()' on a null object reference. Called take photo method by clicking button:
takePhotoBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (isActivePermission(MagicalCamera.CAMERA)) {
magicalCamera.takePhoto();
}
}
});
Trying to get photo:
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
magicalCamera.resultPhoto(requestCode, resultCode, data);
}
How I can solve this problem. Checked all permissions (Wrote permissions into Manifest file).

If statement use in calling onActivityResult()

I am curious to know the difference between the following two methods. Does it matter which one I use, or can they be used according to preference?
Here is the first example:
#Override public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode != Activity.RESULT_OK){
return;
}
if (requestCode == REQUEST_DATA){
//Do stuff
}
}
Here is the second one:
#Override public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == Activity.RESULT_OK && requestCode == REQUEST_DATA){
//Do stuff
}
}

Logically both statements are identical.
The second statement makes the code more readable and understandable, so I always prefer the same. But the condition statement is too complex then nested if is more preferable. Anyway it depends on the coding standard that you follow.

photoeditor android sdk display result image along with result image path

public class MainActivity extends Activity implements PermissionRequest.Response{
public static int CAMERA_PREVIEW_RESULT = 1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
new CameraPreviewIntent(this)
.setExportDir(CameraPreviewIntent.Directory.DCIM, "ImgLyExample")
.setExportPrefix("example_")
.setEditorIntent(
new PhotoEditorIntent(this)
.setExportDir(PhotoEditorIntent.Directory.DCIM, "ImgLyExample")
.setExportPrefix("result_")
.destroySourceAfterSave(true)
)
.startActivityForResult(CAMERA_PREVIEW_RESULT);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, android.content.Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK && requestCode == CAMERA_PREVIEW_RESULT) {
String path = data.getStringExtra(CameraPreviewActivity.RESULT_IMAGE_PATH);
Toast.makeText(this, "Image Save on: " + path, Toast.LENGTH_LONG).show();
}
}
Hello
I want to edit the above code so that in the result the activity displays the result image along with the file path, can someone please help with this as I am very new to android development.
The github link to this sdk is-
https://github.com/imgly/imgly-sdk-android-demo

v1 of the SDK is deprecated, please use v2 instead. Please see the documentation how to integrate the newest version.
https://github.com/imgly/imgly-sdk-android-demo
Else I'am not sure what you actually want.
Can you please explain, how your app need to perform?

React Native(Android) Scan QRCode

I wanna write a native module for to scan barcode but it too hard for me to figure out a way to handle the result without adding a method to the MainActivity. It's not a good idea to modify the MainActivity such heavily because it's no easy job for application developers who writes javascript to use the module.
For example, if I use ZXing Android Embedded: https://github.com/journeyapps/zxing-android-embedded, I have to add a method to MainActivity to handle the result.
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
if(result != null) {
if(result.getContents() == null) {
Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show();
} else {
Toast.makeText(this, "Scanned: " + result.getContents(), Toast.LENGTH_LONG).show();
}
} else {
// This is important, otherwise the result will not be passed to the fragment
super.onActivityResult(requestCode, resultCode, data);
}
}
That makes an issue that any one who uses this module has to modify their MainActivity, which means the module is hard to use. So, any ideas to work it out?

You can just use react-native-rn-zxing:
npm i react-native-rn-zxing
then link it :
react-native link react-native-rn-zxing
And enjoy

notifyDataSetChanged() doesn't update ListView

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
deserializeQuotes();
quotesAdapter.notifyDataSetChanged();
}
}
My array clearly has been updated, and I can see the change when my app starts, but why doesn't it update in this method? The code enters this method.

this.quotesAdapter = new QuoteAdapter(this, R.layout.mainrow, quotes);
quotesAdapter.notifyDataSetChanged();
listView.setAdapter(quotesAdapter);
Works, but why do I have to create a new adapter? Why can't I use my existing one?