You have to move the portion of the background task that updates the UI onto the main thread. There is a simple piece of code for this: runOnUiThread(new Runnable() { @Override public void run() { // Stuff that updates the UI } }); Documentation for Activity.runOnUiThread. Just nest this inside the method that is running … Read more
Thanks to Code Shogun, whose code I adapted to my situation. Let your activity implementOnClickListener as usual: public class SelectFilterActivity extends Activity implements OnClickListener { private static final int SWIPE_MIN_DISTANCE = 120; private static final int SWIPE_MAX_OFF_PATH = 250; private static final int SWIPE_THRESHOLD_VELOCITY = 200; private GestureDetector gestureDetector; View.OnTouchListener gestureListener; @Override protected void onCreate(Bundle … Read more
You need to call Toast.makeText(…) from the UI thread: activity.runOnUiThread(new Runnable() { public void run() { Toast.makeText(activity, “Hello”, Toast.LENGTH_SHORT).show(); } }); This is copy-pasted from another (duplicate) SO answer.
The reason you are having this problem is because the activity you are trying to apply the dialog theme to is extending ActionBarActivity which requires the AppCompat theme to be applied. Update: Extending AppCompatActivity would also have this problem In this case, change the Java inheritance from ActionBarActivity to Activity and leave the dialog theme … Read more
Use getView() or the View parameter from implementing the onViewCreated method. It returns the root view for the fragment (the one returned by onCreateView() method). With this you can call findViewById(). @Override public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { ImageView imageView = (ImageView) getView().findViewById(R.id.foo); // or (ImageView) view.findViewById(R.id.foo); As getView() works only after onCreateView(), … Read more
You could use an AlertDialog for this and construct one using its Builder class. The example below uses the default constructor that only takes in a Context since the dialog will inherit the proper theme from the Context you pass in, but there’s also a constructor that allows you to specify a specific theme resource … Read more
I go to build.gradle and click sync now. Then it worked. Update : File -> Sync Project with Gradle Files (Android Studio 3.1.1) Tools -> Android -> Sync Project with Gradle Files (Android Studio 3.0.1) Or You can click on the icon from the toolbar. This answer may not help works for later version as … Read more
Press Back when you get the notification and then Next. This time it will find the JDK.
This will eventually get to your question, but I first want to address a number of issues you raise in your various comments to the various answers already given at the time of this writing. I have no intention of changing your mind — rather, these are here for others who come to read this … Read more
You could use: import java.util.Calendar Date currentTime = Calendar.getInstance().getTime(); There are plenty of constants in Calendar for everything you need. Check the Calendar class documentation.