In the stacktrace I see this: java.lang.NullPointerException: Attempt to invoke interface method ‘int java.util.List.size()’ on a null object reference The adapter is trying to call size() on a null List. Make sure your list searchResults is not null. solved My object is not null but I’m getting a NULL POINTER EXCEPTION
Firebase ML Kit can perform face detection. It does however not perform face recognition. In other words: it can tell you that there is a face in a picture (and where it is), but it can’t tell you who it is. This makes it impossible to use ML Kit for authenticating a user. 3 solved … Read more
You are Calling Activity in a Background Thread Thats Why you are getting Error You Need to Call Like this Thread thread=new Thread(){ @Override public void run() { try { sleep(5*1000); runOnUiThread(new Runnable() { @Override public void run() { Intent i = new Intent(getApplicationContext(),MainActivity2.class); startActivity(i); } }); } catch (Exception ex) {} } }; thread.start(); … Read more
getSystemService() is a method on Context. Fragment does not inherit from Context. Activity does. You can call getActivity() on your Fragment to obtain an Activity on which to call getSystemService(). 2 solved What is the difference between getActivity() and getApplicationContext() in android?
I’ve solved this, thanks all // Deleting single contact public void deleteLastMessage(SubliminalMsg a) { SQLiteDatabase db = this.getWritableDatabase(); db.delete(TABLE_NAME, KEY_MSG + ” = ?”, new String[] { String.valueOf(a.get_message()) }); db.close(); } public String getLastString() { String selectQuery = “SELECT * FROM ” + TABLE_NAME; SQLiteDatabase db = this.getReadableDatabase(); Cursor cursor = db.rawQuery(selectQuery, null); cursor.moveToLast(); LastString … Read more
I was not adding User-Agent in header so the server refused all my request.Thats why I got banned from the server. return builder.addInterceptor(interceptor) .addInterceptor { val original = it.request(); val authorized = original.newBuilder() .removeHeader(“User-Agent”) .addHeader(“User-Agent”, System.getProperty(“http.agent”)) .build(); it.proceed(authorized); } .build() For better understanding about user-agent, go through this link. 1 solved Android Studio : You … Read more
Before you can develop anything for the wearable platform, you need to prepare your development environment by installing and updating all the packages you’ll need, ensuring your Android Studio IDE is up to date. open the Android SDK Manager and check you have the latest versions of the following three packages: SDK Tools Platform tools … Read more
I solved this problem in this way: @Root(name = “images”) public class Images { @ElementList(entry = “image”, required=false, inline = true) private List<String> imageList; public List<String> getImageList() { return imageList; } } solved Java, Simple XML parsing list
If you start a new activity u can send data with an intent. For example: Intent intent = new Intent(this, newActivity.class); intent.putExtra(KEY, data); If the data is custom object this class must extends from Parcelable so it could be send with an Intent. solved The best way to use variables in another activity [closed]
The content of the slide show shouldn’t matter. If it is a slide show you should be able to add pictures and images to it. The only difference is that you would have different attributes for different media types. Try suing the slide show you have found, and add video to it as if it … Read more
Fresco caches images for you. If you are offline, the images should still be displayed. You should not need to do anything. However, when the cache is cleared (e.g. when the user presses the button or when device space is low), images are obviously deleted from the cache – which is the desired behavior that … Read more
The best way to exit an app is using finishActivity(); You don’t want to kill the whole process, it is not good practice. solved Android close an application
There are two android apk available for WebRTC, appRtcDemo and webRtcDemo. appRtcDemo apk can be used for android device to browser connectivity. You need to provide room id to connect to one room. If you are the room initiator then you have to enter -1. If you want to connect two android device then you … Read more
You can put all the HTTP calls in one ASyncTask and report back with the publishProgress callback. When one fails, you can stop that ASyncTask and the others won’t be called. 0 solved App not working fine on ICS version due to NetworkOnMainThreadException
The numbers that you want to print are the first 6 members of the sequence: a(n) = n * (n + 1) /2 So you could print them with this loop: for (i: Int in 1..6) { println(i * (i + 1) / 2) } or: (1..6).forEach { println(it * (it + 1) / 2) … Read more