TextVisibility change after a period of time

Question

, I have just started learning java for android, I have set the TextVisibility of a textfield to GONE, I need the TextVisibilty to change to VISIBLE after 7 seconds from Button click, I had searched the internet and could not find anything useful or I could'nt understand. So, Please help me.

Answer 1

Try

final TextView yourText = (TextView) findViewById(R.id.yourTextId);
yourText.setVisibility(View.GONE);
yourText.postDelayed(new Runnable() {
        @Override
        public void run() {
            yourText.setVisibility(View.VISIBLE);
        }
    }, 7 * 1000);

in your button click listener. For example, in OnCreate() of your activity:

final TextView yourText = (TextView) findViewById(R.id.yourTextId);
Button yourButton = (Button) findViewById(R.id.yourButtonId);
yourButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                yourText.setVisibility(View.GONE);
                yourText.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        yourText.setVisibility(View.VISIBLE);
                    }
               }, 7 * 1000);
               }
        });

Answer 2

On android, when you want something to be executed after some period of time and in other thread you generally use a Handler like so:

final TextView yourText = (TextView) findViewById(R.id.yourTextId);
Handler handler = new Handler();
handler.postDelayed(new Runnable()) {
@Override
    public void run() {
        yourText.setVisibility(View.VISIBLE);
    }
}, 7000);

If you want, you could implement the Runnable class in your Activity, so you don't have to encapsulate anything:

public class MyActivity implements Runnable

And then you pass this to de postDelayed method first argument,

handler.postDelayed(this, 7000);

and implement the run method inside your activity:

public void onCreate() {
    super.onCreate();
    setContentView(R.id.your_layout);
    /* some code */
}

@Override
public void run() {
    yourText.setVisibility(View.VISIBLE);
}

This will execute the code inside the run method after the period of time you set in the second argument of postDelayed, and inside another thread, so you could continue to make things inside your MainActivity like clicking buttons or something else.

EDIT with sample code for comments:

Handler handler1 = new Handler();
Handler handler2 = new Handler();
handler1.postDelayed(new Runnable() {
    tvt1.setVisibility(View.VISIBLE);
}, 7000);
handler2.postDelayed(new Runnable() {
    tvt2.setVisibility(View.VISIBLE);
}, 12000);