I want to dynamically create 10 Buttons with Margin between each Button but things I tried won't work.
Here is the code I'm using:
//Create Button
for(int i = 1; i <= 10; i++){
MarginLayoutParams params = new MarginLayoutParams(MarginLayoutParams.MATCH_PARENT, MarginLayoutParams.MATCH_PARENT);
params.setMargins(10, 0, 10, 0);
params.leftMargin = xpos;
params.topMargin = ypos;
params.width = 250;
params.height = 150;
Button btn = new Button(this);
btn.setId(i);
final int _id = btn.getId();
btn.setLayoutParams(params);
btn.setText("Button " + _id);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Toast.makeText(v.getContext(), "Button clicked index =" + _id, Toast.LENGTH_LONG).show();
//Intent einauslagern = new Intent(v.getContext(), JockeyEinauslagern.class);
//startActivityForResult(einauslagern, 0);
}
});
xpos += 20;
ypos += 50;
this.addContentView(btn, params);
}
You might want to get a container in your Activity class like this. (let it be LinearLayout for example).
Your XML -
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/container"
android:orienation="vertical"
/>
Your Java -
LinearLayout container = (LinearLayout) findViewById(R.id.container);
LinearLayout.LayoutParams llp = new LinearLayout.LayoutParams(WRAP_CONTENT, WRAP_CONTENT);
//set your margins here
for (int i = 0; i < 10; i++) {
Button button = new Button(this);
// some stuff
container.addView(button, llp);
}
With minor modifications this should work mostly fine.
Try this
for (int i = 0; i < count; i++) {
// creates button
final Button btn = new Button(this);
btn.setLayoutParams(new ViewGroup.LayoutParams(
250,150));
btn.setPadding(0, 8, 0, 8); //or set margin if u need
btn.setTag(i);
yourContainserView.addView(channelBtn, i);
}
Related
Is there any way to align the text of radio button to the top like below programmatically.
i used the below code for creating radio group
final RadioButton[] rb = new RadioButton[5];
RadioGroup rg = new RadioGroup(getActivity()); //create the RadioGroup
rg.setOrientation(RadioGroup.VERTICAL);//or RadioGroup.VERTICAL
rg.setLayoutParams(radioparams);
for (int i = 0; i < 5; i++) {
rb[i] = new RadioButton(getActivity());
rb[i].setText("Radiobtn " + i);
rb[i].setId(i + 100);
rg.addView(rb[i]);
}
layout.addView(rg);
but i get the text to the right side of each button.
final RadioButton[] rb = new RadioButton[5];
RadioGroup rg = new RadioGroup(getActivity()); //create the RadioGroup
rg.setOrientation(RadioGroup.VERTICAL);//or RadioGroup.VERTICAL
rg.setLayoutParams(radioparams);
for (int i = 0; i < 5; i++) {
rb[i] = new RadioButton(getActivity());
rb[i].setText("Radiobtn " + i);
rb[i].setId(i + 100);
rb[i].setButtonDrawable(null);
TypedArray a = getTheme().obtainStyledAttributes(R.style.AppTheme, new int[] {android.R.attr.listChoiceIndicatorSingle});
int attributeResourceId = a.getResourceId(0, 0);
Drawable drawable = getResources().getDrawable(attributeResourceId);
rb[i].setCompoundDrawablesWithIntrinsicBounds(null, null, null, drawable);
rb[i].setGravity(Gravity.CENTER | Gravity.BOTTOM);
rg.addView(rb[i]);
}
layout.addView(rg);
Try this way you can do a trick
make your layout like this
<LinearLayout
android:id="#+id/lnrView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="80dp"
android:orientation="horizontal">
</LinearLayout>
than add programatically RadioButton like this
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
LinearLayout layout = new LinearLayout(MainActivity.this);
layout.setOrientation(LinearLayout.HORIZONTAL);
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
LinearLayout layout2 = new LinearLayout(MainActivity.this);
layout2.setOrientation(LinearLayout.VERTICAL);
LinearLayout.LayoutParams lp2 = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
final ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
final TextView textView = new TextView(MainActivity.this);
int id = 0;
textView.setId(id);
textView.setTextSize(14);
textView.setTextColor(Color.rgb(0, 0, 0));
textView.setMaxEms(2);
textView.setText("NIlu");
layout2.addView(textView);
RadioButton radioButton = new RadioButton(MainActivity.this);
layout2.addView(radioButton);
layout.setLayoutParams(lp);
lnrView.addView(layout2);
}
});
As seen in the picture, everything works fine except that myTextView, instead of appearing just on the right of the last Button, it does on top of 16, 17 and 18. I can’t manage these 3 Buttons to appear bellow the rest. Here is my essential code, where I create dynamically the Buttons and myTextView:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LinearLayout layout = (LinearLayout) findViewById(R.id.layout1); // id del XML
layout.setOrientation(LinearLayout.VERTICAL);
for (int i = 0; i < 4; i++) {
LinearLayout fila = new LinearLayout(this);
fila.setLayoutParams(new
LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT));
for (int j = 0; j < 5; j++) {
if (i==3 && j==3){
TextView myTextView = new TextView(this);
LinearLayout.LayoutParams layoutParams=newLinearLayout.LayoutParams(490, 40);
layoutParams.setMargins(870, 30, 0, 0);
myTextView.setTextSize(26);
myTextView.setLayoutParams(layoutParams);
layout.addView(myTextView);
break;
}
Button btnTag = new Button(this); //
btnTag.setBackgroundColor(Color.TRANSPARENT);
btnTag.setLayoutParams(new LinearLayout.LayoutParams(255, 166));
fila.addView(btnTag);
btnTag.setId(j + 1 + (i * 5));
btnTag.setOnClickListener(prueba);
}
layout.addView(fila);
}
}
At last I have solved the problem. Instead of a LinearLayout I have to use a RelativeLayout. Like this, I can set the TextView wherever I want on the screen throughout the xml. Here is the code, where with rel_btn I set the Buttons wherever I want, too:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout. activity_main);
RelativeLayout layout = (RelativeLayout) findViewById(R.id.layout1); // id del XML
for (int i = 1; i < 19; i++) {
RelativeLayout.LayoutParams rel_btn = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
switch(i) {
case 1: rel_btn.leftMargin = 0; rel_btn.topMargin = 0; break;
case 2: rel_btn.leftMargin = 255; rel_btn.topMargin = 0; break;
case 3: rel_btn.leftMargin = 510; rel_btn.topMargin = 0; break;
…… as many as Buttons requiered
}
rel_btn.width = 255; rel_btn.height = 165;
Button btnTag = new Button(this);
btnTag.setLayoutParams(rel_btn);
btnTag.setBackgroundColor(Color.TRANSPARENT);
btnTag.setId(0+i); // les pone el ID
btnTag.setOnClickListener(prueba);
layout.addView(btnTag);
}
}
1. Set layout weight sum
fila.setWeightSum(5);
2. Set width = 0dp and weight = 1 for all buttons
btnTag.setLayoutParams(new LinearLayout.LayoutParams(0, 166, weight));
3. Set width=0dp and weight = 2 for textview
LinearLayout.LayoutParams layoutParams= new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 40);
layoutParams.weight = 2;
//layoutParams.setMargins(870, 30, 0, 0);
myTextView.setTextSize(26);
myTextView.setLayoutParams(layoutParams);
Updated onCreate method
public void onCreate(Bundle savedInstanceState) {
LinearLayout layout = (LinearLayout) findViewById(R.id.layout1); // id del XML
layout.setOrientation(LinearLayout.VERTICAL);
int width = 0; //0dp, we will use weight to set width
int weight = 1;
for (int i = 0; i < 4; i++) {
LinearLayout fila = new LinearLayout(this);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT, weight);
fila.setLayoutParams(params);
fila.setWeightSum(5);
for (int j = 0; j < 5; j++) {
if (i==3 && j==3){
TextView myTextView = new TextView(this);
LinearLayout.LayoutParams layoutParams= new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 40);
layoutParams.weight = 2;
//layoutParams.setMargins(870, 30, 0, 0);
myTextView.setTextSize(26);
myTextView.setLayoutParams(layoutParams);
layout.addView(myTextView);
break;
}
Button btnTag = new Button(this); //
btnTag.setBackgroundColor(Color.TRANSPARENT);
btnTag.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, 166, weight));
fila.addView(btnTag);
btnTag.setId(j + 1 + (i * 5));
btnTag.setOnClickListener(prueba);
}
layout.addView(fila);
}
}
I have a method that adds a textview dynamically in a linearLayout everytime I click on a button, it works good in this case, but in some other cases i wanted to call it progmmatically without clicking on a button but it doesn't work.BUT when I click on the button again, the textviews appear.
This method is contained in a fragment by the way.
Here is my code :
private void add_part() {
int width = bar.getWidth();
int child_count = ((ViewGroup) bar).getChildCount();
if (child_count == 0) {
minus_btn.setEnabled(true);
LayoutParams lparams = new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT);
TextView part = new TextView(getActivity());
part.setLayoutParams(lparams);
part.setGravity(Gravity.CENTER);
bar.addView(part);
} else if (child_count == 1) {
minus_btn.setEnabled(true);
View nextChild = ((ViewGroup) bar).getChildAt(0);
LayoutParams newparams = new LayoutParams(width / 2,
LayoutParams.FILL_PARENT);
nextChild.setLayoutParams(newparams);
LayoutParams lparams = new LayoutParams(width / 2,
LayoutParams.FILL_PARENT);
TextView part = new TextView(getActivity());
part.setLayoutParams(lparams);
bar.addView(part);
} else if (child_count > 1 && child_count < 10) {
minus_btn.setEnabled(true);
for (int i = 0; i < child_count; ++i) {
View nextChild = ((ViewGroup) bar).getChildAt(i);
LayoutParams newparams = new LayoutParams(width
/ (child_count + 1), LayoutParams.FILL_PARENT);
nextChild.setLayoutParams(newparams);
}
LayoutParams lparams = new LayoutParams(width / (child_count + 1),
LayoutParams.FILL_PARENT);
TextView part = new TextView(getActivity());
part.setLayoutParams(lparams);
bar.addView(part);
}
}
and I called it this ways :
add_part();
or
plus_btn.performClick();
I adding buttons into Horizonatal linearlayout programally, and I want know this button width before layout.
It's because if buttons's total width over LinearLayout width, App create new LinearLayout below old LinearLayout.
button has 1byte char and multibyte char.
therefore,case of button width when button has only 1byte char, case of button width when button has only multibyte, button width is difference.
public void draw() {
width = 320;//screen width
Button btn;
int i;
int twidth = 0;
LinearLayout.LayoutParams lparams = new LinearLayout.LayoutParams(
new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
lparams.setMargins(0, 5, 0, 5);
LinearLayout.LayoutParams buttonParams = new LinearLayout.LayoutParams(
new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
buttonParams.setMargins(5, 0, 5, 0);
for (i = -1; +i < size(); i++) {
LinearLayout layout2 = new LinearLayout(context);
layout2.setOrientation(LinearLayout.HORIZONTAL);
addView(layout2, lparams);
twidth = 0;
while (twidth < width && i + 1 < size()) {
btn = new Button(context);
btn.setText(element.get(i + 1).tagName);
btn.setTextColor(Color.BLACK);
btn.setBackgroundColor(Color.WHITE);
btn.setMaxLines(1);
btn.setLayoutParams(buttonParams);
twidth += btn.getTextSize() * btn.length() + 10;
if (twidth >= width) {
i--;
break;
} else {
btn.setPadding(5, 0, 5, 0);
btn.setClickable(true);
btn.setId(element.get(i + 1).tagId);
layout2.addView(btn, buttonParams);
i++;
}
}
}
}
is there solution?
How can I set the gravity and margin for auto-generated(within the code) TextViews and Buttons? They are inside a LinearLayout.
Here is my generation code:
for(int i=0; i<num_enter; i++){
final int cuco = i;
LinearLayout linlay = new LinearLayout(this);
linlay.setOrientation(0);
TextView text = new TextView(this);
text.setText(name[cuco] + " ");
linlay.addView(text);
TextView num = new TextView(this);
num.setId(cuco);
num.setText("" + current[cuco]);
linlay.addView(num);
Button minus = new Button(this);
minus.setText("-");
minus.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
int cval = current[cuco];
int currentF = current[cuco] - 1;
current[cuco] = current[cuco] -1;
SetSql update = new SetSql(SpellCast.this);
update.open();
update.changeCurrent(currentF, cval, name[cuco]);
update.close();
((TextView) findViewById(cuco)).setText("" + currentF);
}
});
LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, Gravity.RIGHT);
minus.setLayoutParams(p);
linlay.addView(minus);
Button plus = new Button(this);
plus.setText("+");
plus.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
int cval = current[cuco];
int currentF = current[cuco] + 1;
current[cuco] = current[cuco] + 1;
SetSql update = new SetSql(SpellCast.this);
update.open();
update.changeCurrent(currentF, cval, name[cuco]);
update.close();
((TextView) findViewById(cuco)).setText("" + currentF);
}
});
LinearLayout.LayoutParams w = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, Gravity.RIGHT);
plus.setHeight(LayoutParams.WRAP_CONTENT);
plus.setWidth(50);
plus.setLayoutParams(w);
linlay.addView(plus);
main.addView(linlay);
}
Hope you find a way to set the button gravity without changing it size.
1) Get Reference of TextView say tv.
2) tv.setGravity(Gravity.CENTER);
It is not sure work with LinearLayout.. Try Relative Or Absolute
Use View.setLayoutParams(ViewGroup.LayoutParams params). Look at http://developer.android.com/reference/android/R.styleable.html#ViewGroup_Layout for the LayoutParams.
Since nobody has addressed margins
LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
p.setMargins(10, 10,10,10);
p.gravity = Gravity.CENTER;
textView.setLayoutParams(p);
When using setLayoutParams make sure the type of layout params matches the parent view which, in this case, is LinearLayout
setGravity(Gravity.CENTER); Will set the gravity of the text within the view