Is the source of the slider and the lesson link:
http://www.oodlestechnologies.com/blogs/Facebook-Style-Slide-Menu-In-Android
In this case, the width of the file "left_menu.xml" determined TextView (android:layout_width="260dp")
How do I set the width to "LinearLayout" file "left_menu.xml" depending on the device screen? For example, I want the width of the "LinearLayout" was always 1/3 of the screen device? Or any way to set the width of the TextView 1/3 of the width of the device screen.
To set the LinearLayout or TextView width to 1/3 of the device screen:
first of all get the device screen width:
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
try {
display.getRealSize(size);
} catch (NoSuchMethodError err) {
display.getSize(size);
}
int width = size.x;
int height = size.y;
now just create a LayoutParams and set it to the Text:
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams((int)(width/3),
LinearLayout.LayoutParams.WRAP_CONTENT); // or set height to any fixed value you want
your_layout.setLayoutParams(lp);
// OR
your_textView.setLayoutParams(lp);
LinearLayout linear = (LinearLayout) findViewById(R.id.ll);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
linear.setLayoutParams(params);
As you can see, you can set Integer values for the LinearLayout.LayoutParams() constructor, like this:
LinearLayout.LayoutParams cellParams = new LinearLayout.LayoutParams(0, 100);
The costructor wants pixels and not dp(Density Pixels), here's a formula to convert PXs from DPs:
(int) (<numberOfDPs> * getContext().getResources().getDisplayMetrics().density + 0.5f)
LinearLayout layout = (LinearLayout)findViewById(R.id.ll);
LayoutParams params = (LayoutParams) layout.getLayoutParams();
params.height = 100;
params.width = 100;
The above answers are correct. I'll just suggest future readers to take a look at their xml layout file and be sure that the LinearLayout element is not using weight attribute. If so, consider updating weight in your LayoutParams object.
Another good practice is to retrieve the layout params object from the view you're trying to adjust, instead of creating one from scratch and having to set all the values.
LinearLayout YOUR_LinearLayout =(LinearLayout)findViewById(R.id.YOUR_LinearLayout)
LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(
/*width*/ ViewGroup.LayoutParams.MATCH_PARENT,
/*height*/ 100,
/*weight*/ 1.0f
);
YOUR_LinearLayout.setLayoutParams(param);
The easy way to do that, set value of layoutParams, and please notice this size is not in DP.
view.layoutParams.width = 400;
view.layoutParams.height = 150;
view.requestLayout();
Related
So I am making an app that holds multiple user-chosen pictures. I have default ImageViews with pre-set heights of 300dp. I want this height to change to wrap_content once an image has been placed into the ImageView. The only way I know to do this is to remove the image from the layout and then re-add it with a new LayoutParams, but this messes up the order of the other views in my layout. Can I change the height without removing it?
Essentially:
LinearLayout mainLayout = (LinearLayout) findViewById(R.id.mainLayout);
final float scale = getResources().getDisplayMetrics().density;
LinearLayout.LayoutParams mTestImgParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
(int) Math.ceil(scale * 300)
);
final ImageView createdView = new ImageView(this);
mainLayout.addView(createdView, mTestImgParams);
//onLongClick listener, get picture, set the picture into the imageview, etc.
I somehow want to change the
(int) Math.ceil(scale*300)
to
LinearLayout.LayoutParams.WRAP_CONTENT
without removing and re-adding the ImageView, and only after the image has been placed. Help please.
You could try to get the current layout params and change it.
LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) createdView.getLayoutParams();
params.height = LayoutParams.WRAP_CONTENT;
createdView.setLayoutParams(params);
I try change layout height programmatically. I have two buttons. In one button I change my layout position and second button I try to receive save position witch I was first time.
<RelativeLayout
android:id="#+id/popaplayout"
android:layout_width="fill_parent"
android:layout_height="200dp" >
This is a my layout
and in first button I wrote
RelativeLayout.LayoutParams parms = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.FILL_PARENT,
RelativeLayout.LayoutParams.FILL_PARENT);
parms.addRule(RelativeLayout.BELOW, R.id.movies_title_layout);
scrollpopap.setLayoutParams(parms);
scrollpopap.setScrollingEnabled(true);
and second button
RelativeLayout.LayoutParams rel_btn = new RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT, 300);
rel_btn.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
scrollpopap.setLayoutParams(rel_btn);
scrollpopap.setScrollingEnabled(false);
In xml file I wrote height 200dp and programmatically 300 and there are different height. How I can wrote save height in programmatically?
if anyone knows solution please help me
thanks
First convert 200 dp into pixels -
final float scale = getContext().getResources().getDisplayMetrics().density;
int pixels = (int) (200 * scale + 0.5f);
Then set programatically,
RelativeLayout.LayoutParams rel_btn = new RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT, pixels);
rel_btn.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
scrollpopap.setLayoutParams(rel_btn);
scrollpopap.setScrollingEnabled(false);
Convert DP to PX like this.
final float scale = getContext().getResources().getDisplayMetrics().density;
int px = (int) (100 * scale + 0.5f); // replace 100 with your dimensions
Set Some layout_gravity of relative layout. and Change height and width by java code.
RelativeLayout rl = (RelativeLayout) findViewById(R.id.yourId);
rl.getLayoutParams().height = px;
rl.getLayoutParams().width = px;
If you intending to change RelativeLayout height, then this help.
RelativeLayout relativeLayout = (RelativeLayout) findViewById(R.id.yourId);
relativeLayout.getLayoutParams().height = 100;
relativeLayout.getLayoutParams().width = 100;
Use this
RelativeLayout layout = (RelativeLayout) findViewById(R.id.yourlayout_id);
// Gets the layout params that will allow you to resize the layout
LayoutParams params = layout.getLayoutParams();
params.height = 320;
params.width = 320;
For Kotlin Users who want to set Height & Width from Dimens file, use this:
relativeLayout.layoutParams.width = relativeLayout.context
.resources.getDimensionPixelSize(R.dimen.width)
relativeLayout.layoutParams.height = relativeLayout.context
.resources.getDimensionPixelSize(R.dimen.height)
Hi I wanted to change height and width property of image view inside my activity
I tried it in following way but its not working for me ...
View card_view = getLayoutInflater().inflate(R.layout.card_details1,null);
coupon_img = (ImageView) card_view.findViewById(R.id.coupon_image);
// I tried this ////////
coupon_img.getLayoutParams().height = 20;
coupon_img.getLayoutParams().width = 20;
// I also tried this ////
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(100, 100);
coupon_img.setLayoutParams(layoutParams);
// also this one ////
coupon_img.setMaxHeight(10);
But I am not able to change height and width of imageview src. Is there any mistake I am doing?
How to do this?
Need help...
Thank you...
In this piece of code, I am creating a new instance of an ImageView at runtime and setting dimensions to it:
// SET THE IMAGEVIEW DIMENSIONS
int dimens = 120;
float density = activity.getResources().getDisplayMetrics().density;
int finalDimens = (int)(dimens * density);
LinearLayout.LayoutParams imgvwDimens =
new LinearLayout.LayoutParams(finalDimens, finalDimens);
imgAlbumPhoto.setLayoutParams(imgvwDimens);
// SET SCALETYPE
imgAlbumPhoto.setScaleType(ScaleType.CENTER_CROP);
// SET THE MARGIN
int dimensMargin = 5;
float densityMargin = activity.getResources().getDisplayMetrics().density;
int finalDimensMargin = (int)(dimensMargin * densityMargin);
LinearLayout.LayoutParams imgvwMargin =
new LinearLayout.LayoutParams(finalDimens, finalDimens);
imgvwMargin.setMargins
(finalDimensMargin, finalDimensMargin, finalDimensMargin, finalDimensMargin);
This will set the dimensions of the ImageView. They will, however, be in px. Use the code from here if you need dp values: https://stackoverflow.com/a/9563438/450534
UPDATED:
To change the dimensions of an existing ImageView that has already been defined in the XML, use this:
coupon_img.setLayoutParams(new LayoutParams(100, 100));
try some thing like this...
LayoutParams params = new LayoutParams(100, 100);
parantlayout.addView(coupon_img, params);
I think this will help you.
I think you are not adding the changed image to the layout..
LinearLayout ll = (LinearLayout)findViewById(R.layout.yourlinearlayout);
image.setLayoutParams(
new LinearLayout.LayoutParams(
bmp.getWidth(),
bmp.getHeight()));
ll.addView(image);// Then add the image to linear layout
I created a Dialog using LinearLayout and in this Dialog, I have a Button. I want to set its width to 50% of the Dialog's width, but no matter what I do, the button is still filling the entire width. The main problem seems to be that I cannot set the button's weight programmatically. I tried creating a second horizontal LinearLayout that would hold the button with weight set to 0.5f (the parent has a weightSum of 1), but that did not change anything. How can I set the button to be half the width?
I've looked at all the other questions but most of them were using xml so they were not relevant, and the one that solved it programmatically was using hardcoded values in pixels which is obviously an incorrect solution to the problem.
EDIT: Adding some code
LinearLayout linearLayout = new LinearLayout(mContext);
linearLayout.setOrientation(LinearLayout.VERTICAL);
linearLayout.setWeightSum(1);
// I use these params when I call addContentView
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT);
testButton = new Button(mContext);
testButton.setText("Test");
testButton.setId(1);
testButton.setWidth(0);
testButton.setGravity(Gravity.CENTER);
LinearLayout buttonLayout = new LinearLayout(mContext);
butonLayout.setOrientation(LinearLayout.HORIZONTAL);
LinearLayout.LayoutParams buttonParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT, 0.5f);
testButton.setLayoutParams(buttonParams);
buttonLayout.addView(testButton);
linearLayout.addView(buttonLayout);
...
this.addContentView(scrollView, layoutParams);
As I tried more and more options, the code became a mess. I decided to start from scratch and this code worked in the end:
LinearLayout forButton = new LinearLayout(mContext);
forButton.setOrientation(LinearLayout.HORIZONTAL);
LinearLayout.LayoutParams forButtonParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
forButton.setGravity(Gravity.CENTER);
DisplayMetrics dm = new DisplayMetrics();
this.getWindow().getWindowManager().getDefaultDisplay().getMetrics(dm);
int width = dm.widthPixels;
forButton.addView(testButton);
testButton.getLayoutParams().width = width/2;
Are you setting the width value to 0dp as well? This is required for the layout engine to automatically to use layout weight respectively.
Edit
I think this line will get you the results you are looking for:
LayoutParams buttonParams = new LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT, 0.5f);
To find dialog width
DisplayMetrics dm = new DisplayMetrics();
dialog.getWindow().getWindowManager().getDefaultDisplay().getMetrics(dm);
int width = dm.widthPixels ;
To Set Value programmatically
final LayoutParams lparams = new LayoutParams(Height,width/2); // Width , height
final Button button = new Button(this);
button.setLayoutParams(lparams);
EDIT
WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
lp.copyFrom(alertDialog.getWindow().getAttributes());
lp.width = 200;
lp.height = 200;
alertDialog.getWindow().setAttributes(lp);
here is the code that i am using to generate my view object:
// creates the seekBar
sBGauge = new SeekBar(this);
sBGauge.setMax(depthL - 1);
sBGauge.setMinimumWidth(150);
sBGauge.setId(2000 + i);
sBGauge.setOnSeekBarChangeListener(this);
reguardless of what i set the sBGauge.setMinimumWidth(); to it always appears to only be about 20 wide.
any thoughts?
thanks
Edit: to give some more info I am using this seekbar in between two textViews in a tablerow.
bump
#Amit Hooda your solution did not solve my problem but it did lead me down the right path to finding a solution.
What I had to do to fix this issue was to change from a dynamically created a TableRow to a LinearLayout within my TableLayout. I was then able to get my screen width and subtract out my textviews and then set my width of the seekbar with the resulting number.
// gets the width of the screen to set the seekbar width
Display display = getWindowManager().getDefaultDisplay();
int width = display.getWidth();
width = width - 170;
LinearLayout lL = new LinearLayout(this);
// creates the seekBar
sBGauge = new SeekBar(this);
sBGauge.setMax(depthL - 1);
sBGauge.setId(2000 + i);
sBGauge.setLayoutParams(new LinearLayout.LayoutParams(width, 50, 1f));
sBGauge.setOnSeekBarChangeListener(this);
Try this
LayoutParams lp = new LayoutParams(150, 150);
sBGauge.setLayoutParams(lp);
you can change the value 150 and 150 according to your need.