I tried the below code to create multiple buttons through programatically but it creates a single button as per my application i need to create a button based on input. For example if the input is 3 means i need to create three buttons in a layout. For your reference i attached the sample image and my code.
for (int i = 0; i < array_of_btn_input.size(); i++) {
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
LinearLayout layout = new LinearLayout(getApplicationContext());
LinearLayout.LayoutParams params1 = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
layout.setOrientation(LinearLayout.VERTICAL);
layout.setLayoutParams(params);
Button button1 = new Button(getApplicationContext());
button1.setLayoutParams(params1);
button1.setText("button");
layout.addView(button1);
main_layer.addView(layout);
}
if in your example, your global container (main_layer) is a relativelayout or a frame layout, you have placed them on top of eachother. So you can't see the one on the back order.
Try this pls,
LinearLayout main_layer= (LinearLayout) findViewById(id.main_layer);
for (int i = 0; i < 10; i++)
{
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);
LinearLayout layout = new LinearLayout(getApplicationContext());
LinearLayout.LayoutParams params1 = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,LinearLayout.LayoutParams.WRAP_CONTENT);
layout.setOrientation(LinearLayout.VERTICAL);
layout.setLayoutParams(params);
Button button1 = new Button(getApplicationContext());
button1.setLayoutParams(params1);
button1.setText("button");
layout.addView(button1);
main_layer.addView(layout);
}
You are creating multiple new linear layouts within the for loop. Linear layout need to be taken out of the for loop and just try adding the buttons in it.
1st run of for loop creates a new linear layout and adds a button
2nd run of for loop creates a new linear layout and adds a button on the top of previous added layout
Here you are creating a new LinearLayout per button... Try something more like...
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
LinearLayout layout = new LinearLayout(getApplicationContext());
layout.setOrientation(LinearLayout.VERTICAL);
layout.setLayoutParams(params);
for (int i = 0; i < array_of_btn_input.size(); i++) {
LinearLayout.LayoutParams params1 = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
Button button1 = new Button(getApplicationContext());
button1.setLayoutParams(params1);
button1.setText("button");
layout.addView(button1);
}
main_layer.addView(layout);
Try this
LinearLayout llParent = (LinearLayout) findViewById(R.id.llParent);
llParent.removeAllViews();
for (int i = 0; i < array_of_btn_input.size(); i++) {
BSView b = new BSView(this, new SimpleThumbBean(i + 1, bsList
.get(i).getLabel(), bsList.get(i).getThumbUrl()));
LinearLayout.LayoutParams llDynamic = new LinearLayout.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT);
llDynamic.weight = 1f;
llParent.addView(b, llDynamic);
}
llParent is a defined Layout and make sure you call removeAllViews() before adding layouts dynamically into it.
BSView is my own custom View. You can set BSView into ordinary Button as you need it.
Related
Hello everyone please i need help. I'm a biginner in Android programming so since i was trying to solve this problem it took me all my days that why i want you to help me please. I'm trying to display a Linear layout according to the loop condition but the issue is that when i'm doing that it's just displaying the last one and i'm not able to see others when it's displaying. Here are my codes
ScrollView sv = new ScrollView(this);
sv.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
sv.setPadding(5, 5, 5, 5);
sv.setBackgroundColor(getResources().getColor(R.color.colorWhite));
LinearLayout ll = null;
for (int i=0; i < 2; i++){
try {
//Here iam defining the LinearLayout
ll = new LinearLayout(this);
ll.setId(i);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
ll.setLayoutParams(params);
ll.setOrientation(LinearLayout.VERTICAL);
ll.setBackground(getDrawable(R.drawable.circle_view));
//Here iam defining the RelativeLayout
RelativeLayout Rl = new RelativeLayout(this);
RelativeLayout.LayoutParams param = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
Rl.setLayoutParams(param);
//Defining a layout params for widgets
RelativeLayout.LayoutParams image = new RelativeLayout.LayoutParams(100, 90);
image.addRule(RelativeLayout.ALIGN_LEFT);
//Creating widgets
ImageView im = new ImageView(this);
im.setImageResource(R.mipmap.airtel);
im.setId(R.id.image1);
im.setLayoutParams(image);
//----------------
RelativeLayout.LayoutParams txtone = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
txtone.addRule(RelativeLayout.RIGHT_OF, R.id.image1);
txtone.setMargins(0, 5, 0, 45);
TextView txtVone = new TextView(this);
txtVone.setText("ArkaL"+i);
//txtVone.setTextSize(R.dimen.MainTextSize);
txtVone.setTextSize(15);
txtVone.setTypeface(txtVone.getTypeface(), Typeface.BOLD);
txtVone.setLayoutParams(txtone);
//------------------------------------------------
RelativeLayout.LayoutParams txttwo = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
txttwo.addRule(RelativeLayout.RIGHT_OF, R.id.image1);
txttwo.setMargins(0, 45, 0, 0);
TextView txtVtwo = new TextView(this);
txtVtwo.setText("République Démocratique du Congo");
txtVtwo.setTypeface(txtVtwo.getTypeface(), Typeface.SERIF.getStyle());
txtVtwo.setTextSize(10);
txtVtwo.setLayoutParams(txttwo);
Rl.addView(im);
Rl.addView(txtVone);
Rl.addView(txtVtwo);
RelativeLayout.LayoutParams recycler = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
RecyclerView rv = new RecyclerView(this);
rv.setLayoutParams(recycler);
ll.addView(Rl);
ll.addView(rv);
}catch (Exception e){
}
}
//Here for assigning Linear to ScrollView
sv.addView(ll);
this.setContentView(sv);
Please help me.
your problem is that you created one LinearLayout and changed it in a loop and then added it to a ScrollView so at the end you will have just one LinearLayout. as you may know an ScrollView should have just one View as a child view so you should add a LinearLayout for a ScrollView and add as many LinearLayout as you want to the primary LinearLayout. your code can be like this:
LinearLayout llMain = new LinearLayout(this);
LinearLayout.LayoutParams params2 = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
llMain.setLayoutParams(params2);
llMain.setOrientation(LinearLayout.VERTICAL);
sv.addView(llMain);
LinearLayout ll = null;
for (int i = 0; i < 2; i++) {
try {
//Here iam defining the LinearLayout
ll = new LinearLayout(this);
ll.setId(i);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
ll.setLayoutParams(params);
ll.setOrientation(LinearLayout.VERTICAL);
...
llMain.addView(ll);
} catch (Exception e) {
...
note that the Height of primary linearlayour should wrap its content;
I am trying to change the width and height of Buttons I dynamically create but my code below is not working. The Buttons stays the same default size. Anyone know why this is not working?
I believe it might have to do with this line:
myButton.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
The problem may be that I am not supposed to create new LinearLayout params each time but rather add it to an existing LayoutParam?
What do you guys think?
public void onClick(View view)
{
LinearLayout linearLayout2 = new LinearLayout(view.getContext());
linearLayout2.setOrientation(LinearLayout.HORIZONTAL);
LinearLayout.LayoutParams rlp = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
int size = enter_txt.getText().toString().length();
for (int i=0; i<size; i++){
Button myButton = new Button(view.getContext());
myButton.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
myButton.setWidth(100);
myButton.setHeight(100);
myButton.setBackgroundResource(R.drawable.button);
linearLayout2.addView(myButton, rlp);
}
}
Change this code :
myButton.setWidth(100);
myButton.setHeight(100);
To this :
myButton.getLayoutParams().width = 100;
myButton.getLayoutParams().height = 100;
And yes, in your case you can replace :
myButton.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
To :
myButton.setLayoutParams(rlp);
You can use other constructor of the LinearLayout.LayoutParams, which receiving width and height:
myButton.setLayoutParams(new LinearLayout.LayoutParams(100, 100));
I want to create a relative layout inside a linear layout dynamically.This relative layout contains a text view and button which are also created in dynamic method.The alignment of text view and button not work properly.The code which i have tried is given below.
final LinearLayout lab_linear = (LinearLayout) findViewById(R.id.contact_list_layout);
lab_linear.setOrientation(LinearLayout.VERTICAL);
for (int i = 0; i < Size_contact; i++)
{
RelativeLayout layout = new RelativeLayout(this);
RelativeLayout.LayoutParams lp = new
RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT,RelativeLayout.LayoutParams.WRAP_CONTENT);
layout.setLayoutParams(lp);
final TextView Questions_value = new
android.widget.TextView(getApplicationContext());
Questions_value.setText(contact_name.get(i));
Questions_value.setTextSize(18);
Questions_value.setId(i);
layout.addView(Questions_value);
Button myButton = new Button(this);
myButton.setBackgroundResource(R.drawable.close);
myButton.setLayoutParams(new LayoutParams(20,20));
layout.addView(myButton);
lab_linear.addView(layout);
}
Try this..
Give layout parems for RelativeLayout individually to TextView and Button and also add addRule(RelativeLayout.ALIGN_PARENT_RIGHT); or addRule(RelativeLayout.ALIGN_PARENT_LEFT); for that views
Or add the below in for Button
lp1.addRule(RelativeLayout.RIGHT_OF, Questions_value.getId());
for (int i = 0; i < Size_contact; i++)
{
RelativeLayout layout = new RelativeLayout(this);
RelativeLayout.LayoutParams lp = new
RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT,RelativeLayout.LayoutParams.WRAP_CONTENT);
lp.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
final TextView Questions_value = new
android.widget.TextView(getApplicationContext());
Questions_value.setText(contact_name.get(i));
Questions_value.setTextSize(18);
Questions_value.setId(i);
layout.addView(Questions_value,lp);
RelativeLayout.LayoutParams lp1 = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
lp1.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
//Or below remove above code and uncomment the below code
//lp1.addRule(RelativeLayout.RIGHT_OF, Questions_value.getId());
Button myButton = new Button(this);
myButton.setBackgroundResource(R.drawable.close);
myButton.setLayoutParams(new LayoutParams(20,20));
layout.addView(myButton,lp1);
lab_linear.addView(layout);
}
Might I suggest using LinearLayouts instead of RelativeLayouts in your loop? That way, you won't have the overlap problem.
I am adding TextView dynamically using for loop to LinearLayout which orientation is horizontal. Is it possible to align the TextView to second line if it reach end of screen width?
You can do it in the following manner:
LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
LinearLayout layout = new LinearLayout(this);
LinearLayout layout1 = new LinearLayout(this);
LinearLayout layout2 = new LinearLayout(this);
layout.setOrientation(LinearLayout.VERTICAL);
layout1.setOrientation(LinearLayout.HORIZONTAL);
layout2.setOrientation(LinearLayout.HORIZONTAL);
for (int i = 0; i < 3; i++) {
TextView lblView = new TextView(this);
TextView lblView2 = new TextView(this);
lblView.setLayoutParams(params);
lblView.setText("hello");
lblView.setEms(5);
lblView.setGravity(Gravity.CENTER);
lblView2.setLayoutParams(params);
lblView2.setText("hello");
lblView2.setEms(5);
lblView2.setGravity(Gravity.CENTER);
layout1.addView(lblView);
layout2.addView(lblView2);
}
layout.addView(layout1);
layout.addView(layout2);
setContentView(layout);
The following will do the trick,
textview.setLayoutParams(new LayoutParams(
LayoutParams.MATCH_PARENT,
LayoutParams.WRAP_CONTENT));
I want that button(child) will have 25% of full width of horizontal LinearLayout (its parent). The code:
LinearLayout ll = new LinearLayout(this);
ll.setLayoutParams(new ViewGroup.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
ll.setWeightSum (1.0f);
Button b = new Button (this);
ll.addView(b);
How can I do it? Thanks.
Try this:
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENTS,LayoutParams.FILL_PARENT));
lp.weight = 0.25;
b.setLayoutParams(lp);
You can pass it in as part of the LinearLayout.LayoutParams constructor:
LayoutParams param = new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT, 1.0f);