Let's say I have a LinearLayout, and I want to add two View to it. The first one contain editText, and the other one contain listview. I have been try code in java follows:
EditText inputViaText;
ListView historyInput;
protected static LinearLayout askTextLayout = null;
askTextLayout = new LinearLayout(this);
askTextLayout.setVisibility(LinearLayout.VISIBLE);
askTextLayout.setOrientation(LinearLayout.HORIZONTAL);
inputViaText = new EditText(this);
LinearLayout.LayoutParams askTextParams = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT);
historyInput = new ListView(this);
LinearLayout.LayoutParams historyInputParams = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,70);
askTextLayout.addView(historyInput,historyInputParams);
askTextLayout.addView(inputViaText,askTextParams);
FrameLayout.LayoutParams frameAskTextParams = new FrameLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, Gravity.BOTTOM);
setContentView(R.layout.activity_main);
addContentView(askTextLayout, frameAskTextParams);
But, It just show the first one that i add. So when i code like follows:
askTextLayout.addView(historyInput,historyInputParams);
askTextLayout.addView(inputViaText,askTextParams);
It just show listView. When i code like follows:
askTextLayout.addView(inputViaText,askTextParams);
askTextLayout.addView(historyInput,historyInputParams);
It just show edittext. Anyone can help me?
Try this code in oncreate Method of your activity
context = this;
setContentView(R.layout.activity_main);
container = (LinearLayout) findViewById(R.id.Linear);
LinearLayout linearLayout = new LinearLayout(context);
linearLayout.setWeightSum(100);
ListView v1 = new ListView(context);
v1.setBackgroundColor(Color.CYAN);
LinearLayout.LayoutParams p1 = new LinearLayout.LayoutParams(0,
50);
p1.weight = 90;
v1.setLayoutParams(p1);
EditText v2 = new EditText(context);
v2.setText("Hello");
v2.setBackgroundColor(Color.WHITE);
LinearLayout.LayoutParams p2 = new LinearLayout.LayoutParams(0,
50);
p2.weight = 10;
v2.setLayoutParams(p2);
linearLayout.addView(v1, p1);
linearLayout.addView(v2, p2);
View view = new View(MainActivity.this);
LayoutParams lp = new LayoutParams(LayoutParams.MATCH_PARENT,
1);
view.setLayoutParams(lp);
view.setBackgroundColor(Color.BLACK);
container.addView(linearLayout);
container.addView(view);
Write this in activity_main:
<LinearLayout
android:id="#+id/Linear"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
</LinearLayout>
Related
I'm trying to create programmatically parent LinearLayout
and 3 TextViews.
One TextView must be aligned in top left, the second one in the center of parent
and the third one to the right and bottom of my screen. Everything must be done in code.
I'm almost done, but there is still some problem.
All my 3 views are on the top
My code:
public class ActivityFour extends AppCompatActivity {
private LinearLayout mLinearLayout;
private TextView tv1;
private TextView tv2;
private TextView tv3;
private static final int TV_ID1 = 101;
private static final int TV_ID2 = 102;
private static final int TV_ID3 = 103;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mLinearLayout = new LinearLayout(this);
mLinearLayout.setOrientation(LinearLayout.VERTICAL);
ViewGroup.LayoutParams llParams = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT);
setContentView(mLinearLayout, llParams);
LinearLayout.LayoutParams linlayout_params1 =
new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
LinearLayout.LayoutParams linlayout_params2 =
new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
LinearLayout.LayoutParams linlayout_params3 =
new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
linlayout_params1.setMargins(16,16,16,16);
tv1 = new TextView(this);
tv1.setId(TV_ID1);
linlayout_params1.gravity = Gravity.START;
linlayout_params1.gravity = Gravity.TOP;
mLinearLayout.addView(tv1, linlayout_params1);
tv1.setText("TextView number ONE");
linlayout_params2.setMargins(16,16,16,16);
tv2 = new TextView(this);
tv2.setId(TV_ID2);
linlayout_params2.gravity = Gravity.CENTER;
mLinearLayout.addView(tv2, linlayout_params2);
tv2.setText("TextView number TWO");
linlayout_params3.setMargins(16,16,16,16);
tv3 = new TextView(this);
tv3.setId(TV_ID3);
linlayout_params3.gravity = Gravity.END;
mLinearLayout.addView(tv3, linlayout_params3);
tv3.setText("TextView number THREE");
}
}
After adding the weight property to all view.params it looks like this
In order to make the LinearLayout fill all the available space, you need to set the android:layout_weight attribute on the middle child View. You can do it programmatically by using a Constructor which takes the weight as third parameter:
LinearLayout.LayoutParams linlayout_params2 =
new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT, 1);
First of all no need to create liner layout for all textview you can do like this:
in xml file :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="#+id/test"
tools:context=".activity.TestActivity"/>
and in activity file :
LinearLayout layout = findViewById(R.id.test);
TextView product_1 = new TextView(this);
product_1.setText("Product 1");
product_1.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,0,1f));
layout.addView(product_1);
TextView product_2 = new TextView(this);
product_2.setText("Product 2");
product_2.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,0,1f));
product_2.setGravity(Gravity.CENTER);
layout.addView(product_2);
TextView product_3 = new TextView(this);
product_3.setText("Product 3");
product_3.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,0,1f));
product_3.setGravity(Gravity.END|Gravity.BOTTOM);
layout.addView(product_3);
I have a relative layout that has two buttons and one textview. What i'm trying to have happen is having one button on the far left, the textview in the center, and the other button on the far right. Trying to do this without XML.
Here's my code:
RelativeLayout fm = new RelativeLayout(this);
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
fm.setLayoutParams(lp);
fm.setBackgroundColor(Color.CYAN);
Button done = new Button(this);
done.setId(10);
done.setText("Done");
Button save = new Button(this);
save.setId(12);
save.setText("Save");
TextView formManager = new TextView(this);
formManager.setId(11);
formManager.setText("Form Manager");
lp.addRule(RelativeLayout.CENTER_IN_PARENT);
fm.addView(formManager, lp);
lp.removeRule(RelativeLayout.CENTER_IN_PARENT);
lp.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
fm.addView(done, lp);
lp.removeRule(RelativeLayout.ALIGN_PARENT_LEFT);
lp.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
fm.addView(save, lp);
lp.removeRule(RelativeLayout.ALIGN_PARENT_RIGHT);
mainLayout.addView(fm);
Problem is...is that the Save button stretches and takes up the whole layout along with being very thin. Basically with this code nothing is happening like I thought. Any ideas on how to achieve this goal?
try this way
LinearLayout mainLayout = (LinearLayout) findViewById(R.id.mainLayout);
RelativeLayout fm = new RelativeLayout(this);
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
fm.setLayoutParams(lp);
fm.setBackgroundColor(Color.CYAN);
Button done = new Button(this);
done.setId(10);
done.setText("Done");
Button save = new Button(this);
save.setId(12);
save.setText("Save");
TextView formManager = new TextView(this);
formManager.setId(11);
formManager.setText("Form Manager");
RelativeLayout.LayoutParams lpp = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
formManager.setLayoutParams(lpp);
lpp.addRule(RelativeLayout.CENTER_IN_PARENT);
fm.addView(formManager, lpp);
RelativeLayout.LayoutParams doneLayoutParams = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
done.setLayoutParams(doneLayoutParams);
doneLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
fm.addView(done, doneLayoutParams);
RelativeLayout.LayoutParams saveLayoutParams = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
save.setLayoutParams(saveLayoutParams);
saveLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
fm.addView(save, saveLayoutParams);
mainLayout.addView(fm);
I have created programmatically a RelativeLayout which contains a button. I have also created a ScrollView which contains a LinearLayout in which are more than 10 TextViews. I want to have the RelativeLayout to be aligned top and fixed. When someone tries to scroll down, i want all the TextViews to go behind the fixed RelativeLayout. I want that button to be always visible. With this code, the RelativeLayout and the button are not displayed. Where am i wrong?
RelativeLayout (fixed)
- Button
LinearLayout
- ScrollView
- TextView
- + other 10 TextViews
Here is my code:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final RelativeLayout relativeLayout = new RelativeLayout(this);
RelativeLayout.LayoutParams relativeLayoutParams = new RelativeLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
relativeLayout.setLayoutParams(relativeLayoutParams);
this.setContentView(relativeLayout);
final Button restartButton = new Button(this);
restartButton.setText(R.string.restartButton);
LinearLayout.LayoutParams buttonParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
restartButton.setLayoutParams(buttonParams);
relativeLayout.addView(restartButton);
ScrollView scrollView = new ScrollView(this);
this.setContentView(scrollView);
final LinearLayout linearLayout = new LinearLayout(this);
LinearLayout.LayoutParams linearLayoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
linearLayout.setLayoutParams(linearLayoutParams);
linearLayout.setOrientation(linearLayout.VERTICAL);
scrollView.addView(linearLayout);
TextView textView1 = new TextView(this);
testTitle.setText(R.string.text_view1);
linearLayout.addView(textView1);
// + other 10 text views
}
Thanks!
In your code you replace your RelativeLayout with ScrollView. Just set firstly some LinearLayout as contentView and then put there your RelativeLayout via addView(relativeLayout) and the put there you scrollView also via addView(scrollView)
EDIT:
your new code:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final LinearLayout mainLinearLayout = new LinearLayout(this);
LinearLayout.LayoutParams mainLinearLayoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
mainLinearLayout.setLayoutParams(mainLinearLayoutParams);
mainLinearLayout.setOrientation(LinearLayout.VERTICAL);
this.setContentView(mainLinearLayout);
final RelativeLayout relativeLayout = new RelativeLayout(this);
RelativeLayout.LayoutParams relativeLayoutParams = new RelativeLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
relativeLayout.setLayoutParams(relativeLayoutParams);
mainLinearLayout.addView(relativeLayout);
final Button restartButton = new Button(this);
restartButton.setText(R.string.restartButton);
LinearLayout.LayoutParams buttonParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
restartButton.setLayoutParams(buttonParams);
relativeLayout.addView(restartButton);
ScrollView scrollView = new ScrollView(this);
mainLinearLayout.addView(scrollView);
final LinearLayout linearLayout = new LinearLayout(this);
LinearLayout.LayoutParams linearLayoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
linearLayout.setLayoutParams(linearLayoutParams);
linearLayout.setOrientation(linearLayout.VERTICAL);
scrollView.addView(linearLayout);
TextView textView1 = new TextView(this);
testTitle.setText(R.string.text_view1);
linearLayout.addView(textView1);
// + other 10 text views
}
EDIT 2: renamed first linearLayout to mainLinearLayout according to the comment
How to add EditText programmatically?
Here's what I wrote:
View RV = inflater.inflate(R.layout.fragment__dummy,container, false);
LinearLayout LL = new LinearLayout(getActivity());
EditText ET = new EditText(getActivity());
ET.setId(5);
ET.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
LL.addView(ET);
return RV;
Thank You!
LinearLayout layout=(LinearLayout)view.findViewById(R.id.linearLayout);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
android.widget.LinearLayout.LayoutParams.MATCH_PARENT,
android.widget.LinearLayout.LayoutParams.WRAP_CONTENT);
EditText edttext= new EditText(this);
edttext.setId("edittext");
edttext.setLayoutParams(params);
layout.addView(edttext);
You are creating the LinearLayout LL dynamically too.
You need to add it to RV like
((ViewGroup)RV).addView(LL);
Also you should set the LayoutParams for LL too
I try to create dynamically linerlayout and i created two buttoms.
LinearLayout layout = new LinearLayout(this);
layout.setOrientation(LinearLayout.HORIZONTAL);
layout.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT));
TextView titleView = new TextView(this);
titleView.setWidth(LayoutParams.WRAP_CONTENT);
titleView.setHeight(LayoutParams.WRAP_CONTENT);
titleView.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
titleView.setText("Hallo Welt!");
layout.addView(titleView);
Button btnConnect = new Button(this);
btnConnect.setText("Connect");
layout.addView(btnConnect);
Button btnDisconnect = new Button(this);
btnDisconnect.setText("Disconnect");
layout.addView(btnDisconnect);
I want to put Connect button to left corner and want to put disconnet button to the right corner. How can i do that?
Have you tried to set layout gravity for your buttons?
LayoutParams params;
Button btnConnect = new Button(this);
params = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
params.gravity = Gravity.Left;
btnConnect.setLayoutParams(params);
...
Button btnDisconnect = new Button(this);
params = new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
params.gravity = Gravity.Right;
btnConnect.setLayoutParams(params);
...
Layout gravity defines where to place a view in its parent (see Gravity and layout_gravity on Android too)
Cheers
You can use RelativeLayout instead of linear layout.
and add rules to the layout params of the
RelativeLayout.Layoutparams params = RelativeLayout.Layoutparams params = (RelativeLayout.LayoutParams)button.getLayoutParams();
params.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);