Button b1 = new Button(this);
b1.setText(R.string.hello);
RelativeLayout layout1 = (RelativeLayout) findViewById(R.id.top_menu);
//android:layout_alignParentRight=true
layout1.addView(b1);
Is there any way to position b1 in layout1? I want it to float right. Or is the only way to replace the complete layout with a new inflated layout?
Use addRule() methods to position views in relativeLayout. There are 2 methods, one to position relative to container (RelativeLayout itself. Your case) and another to position relative to other views in the container.
Button b1 = new Button(this);
b1.setText(R.string.hello);
RelativeLayout layout1 = (RelativeLayout) findViewById(R.id.top_menu);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); // Relative layout parameters which specify how the child view will be sized (wrap_content in our case)
params.addRule(RelativeLayout.ALIGN_PARENT_RIGHT); // addRule to position it how you need it
layout1.addView(b1, params);
Related
I have a FrameLayout which already holds a child view, and I know its width and height in pixels. I want to programmatically add a new view so that its center is at the specific point of the frame layout. Size of the view is not known and its FrameLayout.LayoutParams is set to WRAP_CONTENT, WRAP_CONTENT. How can I do it?
Say you want to position a TextView in the middle of a FrameLayout.
TextView text = (TextView)frame.findViewById(R.id.text);
FrameLayout frame = (FrameLayout)findViewById(R.id.frame1);
FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT);
Now add your TextView to your FrameLayout and set gravity to center
frame.addView(text);
params.gravity=Gravity.CENTER;
I haven't tried it but I think it should work.
In KOTLIN
viewToADD?.layoutParams = FrameLayout.LayoutParams
(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT).
apply {gravity = Gravity.CENTER and Gravity.CENTER_VERTICAL}
frameLayout.addView(viewToADD)
Could some help me with Layouts? I'm having a problem getting it to display the way I'd like.
I have two relativelayouts in a linearlayout. RelativeLayout 1 is used to accomodate a fragment, RelativeLayout 2 contains the 'main' layout that should fill the screen when there is no fragment, but resize when the fragment is added.
I create the layouts dynamically like so:
LinearLayout mainLayout = new LinearLayout(this);
mainLayout.setLayoutDirection(LinearLayout.VERTICAL);
unityPlayerLayout = new RelativeLayout(this);
youtubeLayout = new RelativeLayout(this);
LinearLayout.LayoutParams mainParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.MATCH_PARENT);
mainLayout.setLayoutParams(mainParams);
RelativeLayout.LayoutParams youtubeLayoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,600);
RelativeLayout.LayoutParams unityPlayerLayoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT,RelativeLayout.LayoutParams.MATCH_PARENT);
unityPlayerLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
mainLayout.addView(youtubeLayout,0,youtubeLayoutParams);
mainLayout.addView(unityPlayerLayout);
unityPlayerLayout.addView(playerView,0,unityPlayerLayoutParams);
Upon adding the fragment, unityPlayerLayout does not resize and aligned to the bottom though. It get's pushed to the right, I can see a sliver of a couple of pixels, which is weird, since youtubeLayout and mainLayout should match the screen.
So, to summarize: Upon adding a fragment to youtubeLayout, I need unityPlayerLayout to resize it's height and drop to the bottom, but in practice unityPlayerLayout gets pushed to the right, and does not resize it's height.
Anyone any idea? Much appreciated!
You nee to set Layout orientation for the main LinearLayout, not direction
Change
mainLayout.setLayoutDirection(LinearLayout.VERTICAL);
to
mainLayout.setOrientation(LinearLayout.VERTICAL);
// try this way,hope this will help you...
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LinearLayout mainLayout = new LinearLayout(this);
RelativeLayout unityPlayerLayout = new RelativeLayout(this);
unityPlayerLayout.setBackgroundColor(getResources().getColor(android.R.color.holo_red_dark));
RelativeLayout youtubeLayout = new RelativeLayout(this);
youtubeLayout.setBackgroundColor(getResources().getColor(android.R.color.holo_red_light));
mainLayout.setOrientation(LinearLayout.VERTICAL);
mainLayout.addView(youtubeLayout,new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,600));
mainLayout.addView(unityPlayerLayout,new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,0,1f));
setContentView(mainLayout,new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,LinearLayout.LayoutParams.MATCH_PARENT));
}
I've RelativeLayout created in layout/activity.xml
And i want to add some elements there programmatically by following way:
RelativeLayout rlayout = (RelativeLayout) findViewById(R.id.relativeLayout1);
RelativeLayout.LayoutParams p = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
rlayout.addView(CustomView,p);
And it works, but elements which were added doesn't fill all view, but i need it.
and also i want to add such elements in square (width=height), how can I do it?
To fill all view Use LayoutParams.MATCH_PARENT instead of LayoutParams.WRAP_CONTENT.
To make layout as square just create int width,height = 300; and then :
RelativeLayout.LayoutParams p = new RelativeLayout.LayoutParams(width, height);
or pass LayoutParams.WRAP_CONTENT into RelativeLayout.LayoutParams and change height and width of your custom view.
To make view square :
Button customView = new Button(this);
customView.setLayoutParams(new RelativeLayout.LayoutParams(200, 200));
RelativeLayout rlayout = (RelativeLayout) findViewById(R.id.relativeLayout1);
rlayout.addView(customView);
to make fill on all view you can use this:
Button customView = new Button(this);
customView.setLayoutParams(new RelativeLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
RelativeLayout rlayout = (RelativeLayout) findViewById(R.id.relativeLayout1);
rlayout.addView(customView);
Also you can add rules for your layout items like this :
p.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
Best wishes.
I am currently having a programatically created framelayout with a imageview and a text view. By original layout is relative layout.
RelativeLayout layout = (RelativeLayout) findViewById(R.id.rel);
FrameLayout fr = new FrameLayout(this);
fr.setBackgroundResource(R.drawable.question_bar_icon);
ImageView b1 = new ImageView(this);
TextView b2 = new TextView(this);
b1.setBackgroundResource(R.drawable.mcq);
fr.addView(b1);
fr.addView(b2);
layout.addView(fr);
Now i am unable to resize the imageview and the button, also m unable to position them, in the sence textview in the center and imageview in the verticle center and left positioned.
I tried layout params, but not working, any help would be greatly appreciated!
Try using the overloaded version of addView that takes a LayoutParameter as well in every case you are programatically adding a view, otherwise it is inserted to the ViewGroup with default layout parameters. (P.S. you can also control the order of insertion).
For example for the ImageView you wanted to be in the center of the frame layout:
int width = FrameLayout.LayoutParams.WRAP_CONTENT; //or whatever you want
int height= FrameLayout.LayoutParams.WRAP_CONTENT; //or whatever you want
FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(width, height, Gravity.CENTER);
fr.addView(b1,lp);
Do the same for the other view, and most importantly, do the same, using RelativeLayout.LayoutParams for inserting the frame element itself into your RelativeLayout.
I have to add a custom layout in a relative layout on a button click.
Again on another click add that same layout with another values above the previous inflated layout.
and it will continue like this.
I don't want to use list view.
I can add dynamically my custom layout but how to place it above the previous added.
on click of ADD button a new row will be added to my relative layout in xml, like ROW 1, ROW 2, and this will continue with ROW 3, ROW 4 etc.
you can use the addRule method of RelativeLayout.LayoutParams class. For example:
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);
Doing this, you can set programmatically all params you would set in your layout xml file.
on button click event add this code:
LinearLayout linearLayout=(LinearLayout) findViewById(R.id.layout);
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);
linearLayout.addView(layout);
Define the layout having id #+id/layout and orientation Vertical in XML file.You will find the button layout being added on every click event.