Question

I am trying to add delay while adding view to mainview but views spear simultaneously. Please help.

 final Handler handler = new Handler();
    LinearLayout ll = (LinearLayout)findViewById(R.id.ll);
    final HorizontalScrollView hsv = new HorizontalScrollView(TestViewActivity.this);
    final LinearLayout lhsv = new LinearLayout(TestViewActivity.this);

    final Animation a1 = new AlphaAnimation(0.00f, 1.00f);
    a1.setDuration(350);
    a1.setFillAfter(true);  
    for(int k =0; k < 5; k++){
         new Handler().postDelayed(new Runnable() {
                public void run() {
                    //write your code here...
                    TextView tv = new TextView(TestViewActivity.this);  
                    tv.setText("Text");
                    tv.setTextSize(42);
                    tv.setPadding(10, 0, 10, 0);
                    tv.setVisibility(View.INVISIBLE);
                    tv.clearAnimation();   
                    tv.startAnimation(a1);
                    lhsv.addView(tv, temp);
                    temp++;
                }
            }, 2000);
        }

    hsv.addView(lhsv);
    ll.addView(hsv);

temp is static int.

Answer 1

according to your code, result may be adding all views simultaneously after 2second, right?
the delay time must be changed by int k like below.

for(int k =0; k < 5; k++){
     handler.postDelayed(new Runnable() {
            public void run() {
                //write your code here...
                TextView tv = new TextView(TestViewActivity.this);  
                tv.setText("Text");
                tv.setTextSize(42);
                tv.setPadding(10, 0, 10, 0);
                tv.setVisibility(View.INVISIBLE);
                tv.clearAnimation();   
                tv.startAnimation(a1);
                lhsv.addView(tv, temp);
                temp++;
            }
        }, 2000 + 2000 * k);
    }

and I recommend to don’t make handler which is not necessary. just post runnables to one handler.