How to Set Delay in Android

How to set delay in android?

Try this code:

import android.os.Handler;
...
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
    @Override
    public void run() {
        // Do something after 5s = 5000ms
        buttons[inew][jnew].setBackgroundColor(Color.BLACK);
    }
}, 5000);

How to use delay functions in Android Studio?

 try {
       //set time in mili
        Thread.sleep(3000);

    }catch (Exception e){
        e.printStackTrace();
    }

edited as your code

 kileri.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
            sendData("F");
            try {
                //set time in mili
                Thread.sleep(3000);

            }catch (Exception e){
                e.printStackTrace();
            }
            sendData("S");
        }
    });

How to delay some action in Android so that a task completes after a set Delay?

If you're using java to code in android Studio then I suggest you to use the Handler, that will execute your action after a determined span of time

In your activity's onCreate method do this:

 int any_delay_in_ms = 1000; //1Second interval
    new Handler().postDelayed(() -> {
        //TODO Perform your action here
    }, any_delay_in_ms);

How to set delay in Kotlin?

there are some ways:

1- use Handler(base on mili-second)(Deprecated):

println("hello")
Handler().postDelayed({
   println("world")
}, 2000)

2- by using Executors(base on second):

println("hello")
Executors.newSingleThreadScheduledExecutor().schedule({
    println("world")
}, 2, TimeUnit.SECONDS)

3- by using Timer(base on mili-second):

println("hello")
Timer().schedule(2000) {
  println("world")
}

How to call a method after a delay in Android

Kotlin

Handler(Looper.getMainLooper()).postDelayed({
    //Do something after 100ms
}, 100)

Java

final Handler handler = new Handler(Looper.getMainLooper());
handler.postDelayed(new Runnable() {
    @Override
    public void run() {
        //Do something after 100ms
    }
}, 100);

Add delay to a loop in android without stalling the UI Thread

Maybe Creating Something like this should work,

protected static void startTimer() {
    timer.schedule(new TimerTask() {
        public void run() {
            mHandler.obtainMessage(1).sendToTarget();
        }
    }, 500);
}

public Handler mHandler = new Handler() {
    public void handleMessage(Message msg) {
         myFunction();
    }
};

How to set a delayed in Android

The loop does not wait for the postDelayed because what's inside the postDelayed happens async. This means that it works independently from the UI thread, on a second thread. What you want to accomplish is to make the UIthread wait for a period of time, and not start another thread after a specific period.
You could try to use the handler in this way:

Handler handler=new Handler()
{

public void handleMessage(Message msg)
{
   if(msg.what==0)
{
 viewCard11.setBackgroundResource(R.drawable.text_view_circle3);
      proceed = true;
}

}
};

and then you may use the handler like this:

handler.postDelayed(() -> 
{            
 //does nothing just waits 1 second and then send empty message
 handler.sendEmptyMessage(0)
}, 1000);

How to set a delay between setting texts in Android

Since you can't call Thread.sleep on the UI thread (only the final result would be displayed) you should do this on anhother Thread, such:

on constructor:

private Handler handler;
public void onCreate(Bundle x) {
     //super and get bt
     final Button bt = findViewById(R.id.button);
     handler = new Handler() {
           public void handleMessage(Message msg) {
                if(msg.what == 0)
                     bt.setText("Click!");
                else
                     bt.setText(String.toString(msg.what));
           }
     }
}

public void buttonOnClick (View button) {
   final Button bt = findViewById(R.id.button);
   bt.setText("3");
   //wait 1 second
   handler.sendEmptyMessageDelayed(2, 1000);
   //wait 2 second
   handler.sendEmptyMessageDelayed(1, 2000);
   //wait 3 second
   handler.sendEmptyMessageDelayed(0, 1000);
   bt.setText("Click!");
}

Note that I did used msg.what that is a identifier for such, but you could just create a message with an obj parameter that you could use later.

Adding views to activity with time delay?

Note: the following snippet is from a java perspective, you may need to modify it to kotlin

    Handler handler = new Handler(getMainLooper());
    Runnable runnable = new Runnable() {
        @Override
        public void run() {
            if (counter < 5) {
                createImage(0, 0); //your positions
                handler.postDelayed(this, 500);
                counter++;
            }
        }
    };
    handler.postDelayed(runnable, 500);

Note: counter is an int variable to determine... count.

Reasoning:
All the code you do in any UI class (activities, fragments, views) defaults to the UI thread. If you do any Thread.sleep() operations in that thread, the whole UI will freeze for that time being, which in some cases can lead to an ANR crash ANR.

Handler can help you here. It takes a Looper reference to instantiate. When you call the post(Runnable) or optionally postDelayed(Runnable, long millis), it will take the Runnable and execute it on the UI thread (delayed or otherwise). However, for each use, you need to call post again, i.e. make the post call recursive in the Runnable.

I hope this helps!!

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