how to change theme of app in android studio programmatically

ByAnurag batra October 4, 2022September 6, 2022

So, to switch between themes dynamically you simply need to call 
setTheme before super.onCreate like this:

  public void onCreate(Bundle savedInstanceState) {
      setTheme(android.R.style.Theme);
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_second);
  }

Here is what the above code is Doing:
1. The first line of code is calling the setTheme method.
2. The second line of code is calling the super.onCreate method.
3. The third line of code is calling the setContentView method.

declaration and definition of array in java

Java Examples

declaration and definition of array in java

ByAnurag batra October 5, 2022September 6, 2022

int[] marks = new int[5]; marks = { 91,92,93,94,95} Here is what the above code is Doing: 1. We are creating an array of 5 elements. 2. We are assigning the values to the array.

discord jda remove @everyone from channel

Java Examples

discord jda remove @everyone from channel

ByAnurag batra October 4, 2022September 6, 2022

channel.createPermissionOverride(guild.getPublicRole()) .setAllow(Permission.EMPTY_PERMISSIONS) .reason(“Remove @everyone from the channel”) .queue(); Here is what the above code is Doing: 1. We’re getting the channel object from the guild object. 2. We’re creating a permission override for the channel. 3. We’re setting the permission override to allow no permissions. 4. We’re setting the reason for the permission override. 5….

Java Examples

gc algorithms java 8

ByAnurag batra October 11, 2022September 6, 2022

#include “cpuinfo_x86.h” // For C++, add `using namespace CpuFeatures;` static const X86Features features = GetX86Info().features; void Compute(void) { if (features.aes && features.sse4_2) { // Run optimized code. } else { // Run standard code. } } Here is what the above code is Doing: 1. It includes the header file `cpuinfo_x86.h` which contains the definitions…

Java Examples

android coding how to open map

ByAnurag batra October 4, 2022September 6, 2022

//Moves you to different intent with the map on it String uri = String.format(Locale.ENGLISH, “geo:%f,%f”, latitude, longitude); Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(uri)); context.startActivity(intent); Here is what the above code is Doing: 1. It’s creating a string with the latitude and longitude of the location you want to show. 2. It’s creating an intent with…

Java Examples

exceptions you get in java

ByAnurag batra September 18, 2022September 6, 2022

Unchecked: -IndexOutOfBounds exception(while working with arrays/strings) -NullPointerException(if I forget to instantiate the objects) -ArithmaticException Checked: -IOException -SQLException -FileNotFountException Here is what the above code is Doing: 1. The try block contains the code that might throw an exception. 2. The catch block contains the code that will handle the exception. 3. The finally block contains…

Java Examples

java int stream min

ByAnurag batra September 18, 2022September 6, 2022

list.stream().min(Integer::compare).get() Here is what the above code is Doing: 1. We’re using the stream() method to convert the list into a stream. 2. We’re using the min() method to find the minimum element in the stream. 3. We’re using the get() method to return the minimum element.

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