Develop Reference

setMargins(left, top, right, bottom); Android doesn't work

I have this code, but the textview are all without Margin right and i don't know why.
I add some lines of onCreate for declaration.
And the functions about the creation of the textview.
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mLayout = (LinearLayout) findViewById(R.id.linearlayout);
mEditText = (EditText) findViewById(R.id.input_materia);
mButton = (Button) findViewById(R.id.add_materia);
mButton.setOnClickListener(onClick());
TextView textView = new TextView(this);
textView.setText("New text");
/*
* add textview from editext
*/
private OnClickListener onClick() {
return new OnClickListener() {
#Override
public void onClick(View v) {
mLayout.addView(createNewTextView(mEditText.getText().toString()));
}
};
}
private TextView createNewTextView(String text) {
final LayoutParams lparams = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
lparams.setMargins(0, 0, 30, 0);
final TextView textView = new TextView(this);
textView.setLayoutParams(lparams);
textView.setText(text);
textView.setGravity(Gravity.CENTER);
return textView;
}
some helps?

Have you tried referencing Relative Layout Params or Linear Layout Params depending on what is set in your XML?
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);

Scroll Height for ScrollView does not work

i'm writing progrmicaly adding Linearlayout and Textview into ScrollView. but my ScrollView could not scroll to height.
My programicall Code:
if (cursor.moveToFirst()) {
do {
String last_ID = cursor.getString(cursor.getColumnIndex("lastId"));
String smsBody = cursor.getString(cursor.getColumnIndex("smsBody"));
String senderName = cursor.getString(cursor.getColumnIndex("senderName"));
String date[] = cursor.getString(cursor.getColumnIndex("receiveDate")).split("/");
CalendarTool ct =
new CalendarTool(
Integer.valueOf(date[0]),
Integer.valueOf(date[1]),
Integer.valueOf(date[2])
);
String IranianDate = ct.getIranianDate();
ScrollView SV =new ScrollView(this);
LinearLayout ll = new LinearLayout(this);
ll.setBackgroundColor(Color.parseColor("#f7cbad"));
ll.setOrientation(LinearLayout.VERTICAL);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.FILL_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT
);
params.setMargins(0, 0, 0, 10);
ll.setLayoutParams(params);
TextView TV_IranianDate = new TextView(this);
TV_IranianDate.setText(IranianDate);
TV_IranianDate.setTextColor(Color.parseColor("#ffffff"));
TV_IranianDate.setLayoutParams(
new ViewGroup.LayoutParams
(ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT)
);
ll.addView(TV_IranianDate);
TextView TV_smsBody = new TextView(this);
TV_smsBody.setText(smsBody);
TV_smsBody.setGravity(Gravity.RIGHT);
TV_smsBody.setLayoutParams(
new ViewGroup.LayoutParams
(ViewGroup.LayoutParams.FILL_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT)
);
TV_smsBody.setPadding(5, 5, 5, 5);
ll.addView(TV_smsBody);
TextView TV_spacer2 = new TextView(this);
TV_spacer2.setBackgroundColor(Color.parseColor("#000000"));
TV_spacer2.setLayoutParams(
new ViewGroup.LayoutParams
(ViewGroup.LayoutParams.FILL_PARENT,
1)
);
ll.addView(TV_spacer2);
SV.addView(ll);
((LinearLayout) linearLayout).addView(SV);
} while (cursor.moveToNext());
}

I guess the problem is the ScrollView object. You should use HorizontalScrollView instead, like this for example:
HorizontalScrollView SV = new HorizontalScrollView(this);
SV.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.MATCH_PARENT));
like described in the API:
ScrollView only supports vertical scrolling. For horizontal scrolling, use HorizontalScrollView.

how to set child view at LAYOUT_LEFT OF="+/id" by programically in relative layout

as shown in image i need to set text view LEFT OF RADIO GROUP and i did it using java code....so i don't know to set parameter for LAYOUT LEFT OF="" in java code.....how to solve it ..please guide me this way...
this is class file......
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.rate_me_up);
textViewShowTime = (TextView) findViewById(R.id.tvTimeCount);
layout = (RelativeLayout) findViewById(R.id.linear);
Button btnp = (Button) findViewById(R.id.buttonp);
btnp.setOnClickListener(this);
}
#Override
public void onClick(View v) {
RadioGroup radioGroup = new RadioGroup(Rate_me_up.this);
radioGroup.setOrientation(0);
RelativeLayout.LayoutParams p = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
if (mLastRadioGroup != null)
p.addRule(RelativeLayout.BELOW, mLastRadioGroup.getId());
radioGroup.setId(mRadioGroupId++);
mLastRadioGroup = radioGroup;
layout.addView(radioGroup, p);
RadioButton radioButtonView = new RadioButton(Rate_me_up.this);
radioButtonView.setText("radio1");
radioButtonView.setId(id++);
radioButtonView.setButtonDrawable(R.drawable.e404);
radioButtonView.setChecked(false);
radioGroup.addView(radioButtonView, p);
RadioButton radioButtonView2 = new RadioButton(Rate_me_up.this);
radioButtonView2.setText("radio2");
radioButtonView2.setId(id++);
radioButtonView2.setChecked(false);
radioGroup.addView(radioButtonView2, p);
RadioButton radioButtonView3 = new RadioButton(Rate_me_up.this);
radioButtonView3.setText("radio3");
radioButtonView3.setId(id++);
radioGroup.addView(radioButtonView3, p);
radioButtonView3.setChecked(false);
TextView txt = new TextView(Rate_me_up.this);
txt.setText("FOOD QUALITY!");
layout.addView(txt, p);
radioGroup.setOnCheckedChangeListener(this);
}

Alright you can do it by this way:
TextView txt = new TextView(Rate_me_up.this);
txt.setText("FOOD QUALITY!");
RelativeLayout.LayoutParams params=
new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
params.addRule(RelativeLayout.LEFT_OF,radiofroup.getId());
txt.setLayoutParams(params);
layout.addView(txt);
Hope I answered your question. :)

addRule Do something like this..
RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams)button.getLayoutParams();
params.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
params.addRule(RelativeLayout.LEFT_OF, R.id.id_to_be_left_of);
button.setLayoutParams(params);

How can i put my buttons like that?

I want to put my number button like that. This is my code:
LinearLayout layout = new LinearLayout(this);
layout.setOrientation(LinearLayout.VERTICAL);
LinearLayout layout2 = new LinearLayout(this);
layout2.setOrientation(LinearLayout.HORIZONTAL);
TextView titleView = new TextView(this);
titleView.setText("Hello World!");
layout.addView(titleView);
android.widget.LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.FILL_PARENT, 1);
android.widget.TableLayout.LayoutParams params = new TableLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.FILL_PARENT, 1);
Button btnConnect = new Button(this);
btnConnect.setText("Connect");
btnConnect.setLayoutParams(param);
layout2.addView(btnConnect);
Button btnDisconnect = new Button(this);
btnDisconnect.setText("Disconnect");
layout2.addView(btnDisconnect);
btnDisconnect.setLayoutParams(param);
layout.addView(layout2);
TableLayout tblLayout = new TableLayout(this);
tblLayout.setOrientation(TableLayout.HORIZONTAL);
TableRow tblrow = null;
for (int i = 1; i <= 9; i++) {
if (i % 3 == 1) {
tblrow = new TableRow(this);
tblLayout.addView(tblrow);
}
Button b = new Button(this);
b.setText("" + i);
tblrow.addView(b);
}
TableRow tr = new TableRow(this);
Button btnZero = new Button(this);
btnZero.setText("0");
Button btnHash = new Button(this);
btnHash.setText("#");
Button btnStar = new Button(this);
btnStar.setText("*");
tr.addView(btnZero);
tr.addView(btnHash);
tr.addView(btnStar);
tblLayout.addView(tr);
layout.addView(tblLayout);
setContentView(layout);
this complies:
In order to make my columns like that. I used this code:
android.widget.TableLayout.LayoutParams params = new TableLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.FILL_PARENT, 1);
tblLayout.setLayoutParams(param);
but there's no change. What do i need to do? Is that Layoutparams not enough to do that?

You need to set the widths of layout, layout2, tblLayout, each tblRow, and tr to MATCH_PARENT and each Button must have an equal layout_weight.

How to resize the button progmmatically in android

I want Ui to be done programmatically ,i am using simple button,and it occupies the full width of screen,how should i be resizing the button width.
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setContentView(R.layout.activity_main);
TextView label = new TextView(this);
label.setText("Hello");
label.setTextSize(20);
Button but = new Button(this);
but.setText("Click Me");
but.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Perform action on click
System.out.println("Button Clicked");
Intent myIntent = new Intent(v.getContext(), SecondActivity.class);
startActivityForResult(myIntent, 0);
}
});
LinearLayout ll = new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);
ll.addView(label);
ll.addView(but);
setContentView(ll);
}
Is there any separate layout to which i should be adding this button?Any tutorials regarding deeping understanding of layout programmatically will be useful.
Regards
Rakesh Shankar.P

check this for Resize Button programmatically using Java Code
(or)
final float scale = getResources().getDisplayMetrics().density;
int heightDp = (int) (33 * scale + 0.5f);
ViewGroup.LayoutParams params = b.getLayoutParams();//b========>ur button
params.height = heightDp;
b.setLayoutParams(params);
b.requestLayout();

You can add params to button
LinearLayout.LayoutParams lp_l = new LinearLayout.LayoutParams(
(LayoutParams.WRAP_CONTENT), (LayoutParams.WRAP_CONTENT));
but.setLayoutParams(rel_lp);

See this link for resize Button Programatically http://android-coding.blogspot.in/2011/05/resize-button-programmatically-using.html

LayoutParams params =new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT);
LinearLayout layout = new LinearLayout(this);
layout.setOrientation(LinearLayout.VERTICAL);
Button btn = new Button(this);
btn.setText("login");
btn.setLayoutParams(params);
layout.addView(btn);