set layout margin programmatically android

1LinearLayout ll = new LinearLayout(this);
2ll.setOrientation(LinearLayout.VERTICAL);
3
4LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
5     LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
6
7layoutParams.setMargins(30, 20, 30, 0);
8
9Button okButton=new Button(this);
10okButton.setText("some text");
11ll.addView(okButton, layoutParams);
12

1int sizeInDP = 16;
2
3int marginInDp = (int) TypedValue.applyDimension(
4            TypedValue.COMPLEX_UNIT_DIP, sizeInDP, getResources()
5                    .getDisplayMetrics());
6setMargins(view, sizeInDP, sizeInDP, sizeInDP, sizeInDP);
7
8
9void setMargins (View view, int left, int top, int right, int bottom) {
10  if (view.getLayoutParams() instanceof ViewGroup.MarginLayoutParams) {
11    ViewGroup.MarginLayoutParams p = (ViewGroup.MarginLayoutParams) view.getLayoutParams();
12    p.setMargins(left, top, right, bottom);
13    view.requestLayout();
14  }
15}
16

1ViewGroup.LayoutParams p = this.getLayoutParams();
2    if (p instanceof LinearLayout.LayoutParams) {
3        LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams)p;
4        if (_default) lp.setMargins(mc.oml, mc.omt, mc.omr, mc.omb);
5        else lp.setMargins(mc.ml, mc.mt, mc.mr, mc.mb);
6        this.setLayoutParams(lp);
7    }
8    else if (p instanceof RelativeLayout.LayoutParams) {
9        RelativeLayout.LayoutParams lp = (RelativeLayout.LayoutParams)p;
10        if (_default) lp.setMargins(mc.oml, mc.omt, mc.omr, mc.omb);
11        else lp.setMargins(mc.ml, mc.mt, mc.mr, mc.mb);
12        this.setLayoutParams(lp);
13    }
14    else if (p instanceof TableRow.LayoutParams) {
15        TableRow.LayoutParams lp = (TableRow.LayoutParams)p;
16        if (_default) lp.setMargins(mc.oml, mc.omt, mc.omr, mc.omb);
17        else lp.setMargins(mc.ml, mc.mt, mc.mr, mc.mb);
18        this.setLayoutParams(lp);
19    }
20}
21