removeView function removes only direct child object.

setContentView(R.layout.voicerecord_img);

TextView l_tv = new TextView(this);

l_tv.setText("you can do it");

l_tv.setTextColor(Color.WHITE);

l_tv.setBackgroundColor(Color.BLUE);

TextView l_tv2 = new TextView(this);

l_tv2.setText("hello");

l_tv2.setTextColor(Color.WHITE);

l_tv2.setBackgroundColor(Color.YELLOW);

FrameLayout l_fr = new FrameLayout(this);

RelativeLayout.LayoutParams l_layoutParams = new RelativeLayout.LayoutParams(

LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

l_layoutParams.leftMargin = 500;

l_layoutParams.topMargin = 100;

l_fr.setLayoutParams(l_layoutParams);

l_fr.addView(l_tv);

l_fr.addView(l_tv2);

((RelativeLayout) findViewById(R.id.layout1)).addView(l_fr);

((RelativeLayout) findViewById(R.id.layout1)).removeView(l_tv2);                 (1)

In uppter code, do you think that l_tv2 was removed really?

( Keep an eye on (1) )

No. 

TextView l_tv = new TextView(this);

l_tv.setText("you can do it");

l_tv.setTextColor(Color.WHITE);

l_tv.setBackgroundColor(Color.BLUE);

TextView l_tv2 = new TextView(this);

l_tv2.setText("hello");

l_tv2.setTextColor(Color.WHITE);

l_tv2.setBackgroundColor(Color.YELLOW);

FrameLayout l_fr = new FrameLayout(this);

RelativeLayout.LayoutParams l_layoutParams = new RelativeLayout.LayoutParams(

LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

l_layoutParams.leftMargin = 500;

l_layoutParams.topMargin = 100;

l_fr.setLayoutParams(l_layoutParams);

l_fr.addView(l_tv);

l_fr.addView(l_tv2);

l_fr.removeView(l_tv2);                  (2)

((RelativeLayout) findViewById(R.id.layout1)).addView(l_fr);

//((RelativeLayout) findViewById(R.id.layout1)).removeView(l_tv2);

How about this?

( Keep an eye on (2) )

Yes, l_tv2 was removed. 

TextView l_tv = new TextView(this);

l_tv.setText("you can do it");

l_tv.setTextColor(Color.WHITE);

l_tv.setBackgroundColor(Color.BLUE);

TextView l_tv2 = new TextView(this);

l_tv2.setText("hello");

l_tv2.setTextColor(Color.WHITE);

l_tv2.setBackgroundColor(Color.YELLOW);

FrameLayout l_fr = new FrameLayout(this);

RelativeLayout.LayoutParams l_layoutParams = new RelativeLayout.LayoutParams(

LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

l_layoutParams.leftMargin = 500;

l_layoutParams.topMargin = 100;

l_fr.setLayoutParams(l_layoutParams);

l_fr.addView(l_tv);

l_fr.addView(l_tv2);

//l_fr.removeView(l_tv2);

((RelativeLayout) findViewById(R.id.layout1)).addView(l_fr);

((FrameLayout)(((RelativeLayout) findViewById(R.id.layout1)).getChildAt(0))).removeView(l_tv2);               (3)

How about this?

( Keep an eye on (3) )

Yes, l_tv2 was removed. 

In other words, removeView function removes only direct child object.