I'm trying to determine the screen's width and height to use them in a fragment.
My fragment's layout has the id background.
If inside onViewCreated I use:
background = (RelativeLayout) view.findViewById(R.id.background);
background.post(new Runnable() {
#Override
public void run() {
int width = background.getMeasuredWidth();
int height = background.getMeasuredHeight();
Log.d("askj", width + "+" + height);
}
});
I get 1440+2276
but if I use:
WindowManager windowManager = (WindowManager) getActivity().getSystemService(Context.WINDOW_SERVICE);
DisplayMetrics displayMetrics = new DisplayMetrics();
windowManager.getDefaultDisplay().getMetrics(displayMetrics);
int width = displayMetrics.widthPixels;
int height = displayMetrics.heightPixels;
Log.d("askj", width + "+" + height);
or other related methods I get:
1440+2560
I'm using those parameters to set a background and I can clearly see that the whole screen size is not taken if I use the second approach. I don't really want to use that Runnable() so is there any way in which I can solve this ?
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/background"
tools:context="com.example.home.background.HomeScreen">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/img"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
android:textStyle="bold"
android:layout_centerInParent="true"
android:textSize="22sp"
/>
</RelativeLayout>
You can measure the background View before your activity has added it to its view hierarchy by yourself using measure method.
background = (RelativeLayout) view.findViewById(R.id.background);
background.measure(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
int backgroundHeight = background.getMeasuredHeight();
int backgroundWidth = background.getMeasuredWidth();
In my case I measured an inflated View but it had the width and height set to match_paent.
View view = inflater.inflate(R.layout.table_field_text, null, false);
view.measure(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
int viewHeight = view.getMeasuredHeight();
Use ViewTreeObserver like Below:
background = (RelativeLayout) view.findViewById(R.id.background);
final ViewTreeObserver vto = background.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#SuppressWarnings("deprecation")
#Override
public void onGlobalLayout() {
//get View Width and height here
int width = background.getWidth();
int height = background.getHeight();
//Call anyfunction which uses width and height here
function(width,height);
//Then remove layoutChange Listener
ViewTreeObserver vto = background.getViewTreeObserver();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
vto.removeOnGlobalLayoutListener(this);
} else {
vto.removeGlobalOnLayoutListener(this);
}
}
});
Related
I'm looking for a way to get my two imageviews on the same size.
Imageview A is : width: match_parent
height: wrap_content
scaleType: centerInside
adjustViewBounds: true
Imageview B is :
width: match_parent
height: wrap_content
And ImageView B is over Imageview A. But, the height of A is determinated by his content. So I would like that my ImageView B be at the same size than A.
I tried this : (In my RecyclerView adapter).
final ImageView v2 = holder.miniatureVideo;
final ImageView shadow2 = holder.shadow;
v2.post(new Runnable() {
#Override
public void run() {
shadow2.getLayoutParams().height = v2.getHeight();
ViewGroup.LayoutParams params = (ViewGroup.LayoutParams) shadow2.getLayoutParams();
params.height = v2.getHeight();
shadow2.setLayoutParams(params);
}
});
But there is a little delay, before it is correctly resize. And sometimes I have to scroll to make it resized.
Thanks
Did you try RelativeLayout ?
like this:
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/image_a"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:scaleType="centerInside"
android:src="#drawable/imageA"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignTop="#id/image_a"
android:layout_alignBottom="#id/image_a"
android:src="#drawable/imageB"/>
</RelativeLayout>
int finalHeight, finalWidth;
final ImageView imageView1= (ImageView)findViewById(R.id.scaled_image);
ViewTreeObserver vto = imageView1.getViewTreeObserver();
vto.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
public boolean onPreDraw() {
imageView1.getViewTreeObserver().removeOnPreDrawListener(this);
finalHeight = imageView1.getMeasuredHeight();
finalWidth = imageView1.getMeasuredWidth();
return true;
}
});
First get height of ImageOne as above.. Then Set it to ImageTwo as below
android.view.ViewGroup.LayoutParams layoutParams = imageView2.getLayoutParams();
layoutParams.width = finalWidth;
layoutParams.height = finalHeight ;
imageView2.setLayoutParams(layoutParams);
I want to set bottom margin equal to view's/layout's height.
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
//Main layout
<LinearLayout
android:id="#+id/content_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
.
.
.
</LinearLayout>
//Bottom drawer layout
<LinearLayout
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
.
.
.
</LinearLayout>
</FrameLayout>
How to add bottom margin to second child exactly of its height so that it goes out of the screen?
Is it possible through xml attribute?
You cant get height of a view in xml.
You can get height of a view dynamically by using ViewTreeObserver, then you can set the margin for that View.
Below is a way you can do dynamically:
LinearLayout linearLayout = (LinearLayout) findViewById(R.id.layoutid);
final ViewTreeObserver vto = linearLayout.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#SuppressWarnings("deprecation")
#Override
public void onGlobalLayout() {
//get LayoutWidth and height here
int layoutWidth = linearLayout.getWidth();
int layoutHeight = linearLayout.getHeight();
//set layout margin here
LinearLayout.LayoutParams llp = linearLayout.getLayoutParams();
llp.bottomMargin = layoutHeight;
linearLayout.setLayoutParams(llp);
//Then remove layoutChange Listener
ViewTreeObserver vto = linearLayout.getViewTreeObserver();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
vto.removeOnGlobalLayoutListener(this);
} else {
vto.removeGlobalOnLayoutListener(this);
}
}
});
I have something like that:
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/photo1"
android:orientation="vertical" >
<FrameLayout
android:id="#+id/photo2"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</FrameLayout>
<Fragment>
</Fragment>
</FrameLayout>
And I want to resize that photo2 FrameLayout.
public void setScreenSize() {
Display display = getWindowManager().getDefaultDisplay();
FrameLayout layout = (FrameLayout) findViewById(R.id.photo2);
int screen_height = display.getHeight();
screen_height = (int) (0.60*screen_height);
LayoutParams parms = (LayoutParams) layout.getLayoutParams();
parms.height = screen_height;
}
Unfortunately this doesn't work and I don't know why.
Are you setting the height back to the layout?
public void setScreenSize() {
Display display = getWindowManager().getDefaultDisplay();
FrameLayout layout = (FrameLayout) findViewById(R.id.photo2);
int screen_height = display.getHeight();
screen_height = (int) (0.60*screen_height);
LayoutParams parms = (LayoutParams) layout.getLayoutParams();
parms.height = screen_height;
// Set it back.
layout.setLayoutParams(parms);
}
If you want to change the size of FrameLyaout programmatically then copy and paste this code, its working 100%.
FrameLayout frame1 = (FrameLayout) findViewById(R.id.framelayout1);
frame1.getLayoutParams().height =460;
frame1.getLayoutParams().width = 350;
frame1.requestLayout();
I see some questions about "ImageView"s, but I need a FrameLayout.
I have a FrameLayout, which I need its width:height = 2:1, and the width is fill_parent. There are many image views inside the frame layout, I can just set them width=fill_parent and height=fill_parent.
I don't find a way to do this, please help .
My xml code is:
<FrameLayout
android:id="#+id/cardView"
android:layout_width="fill_parent" android:layout_height="fill_parent"
android:layout_centerInParent="true">
<ImageView
android:id="#+id/frameView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:scaleType="fitXY"
android:src="#drawable/card_style1"
/>
</FrameLayout>
See if this is what you want:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.your_layout);
final FrameLayout target = (FrameLayout) findViewById(R.id.frame_id);
target.post(new Runnable() {
#Override
public void run() {
int width = target.getWidth();
int height = width / 2;
LayoutParams lp = target.getLayoutParams();
lp.height = height;
target.setLayoutParams(lp);
}
});
}
I am trying to add views to LinearLayout dynamically as much as it possible (depending on screen width).
I do this before the LinearLayout displays on screen.
My LinearLayout:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
android:background="#666"/>
My view to display in LinearLayout:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:background="#999">
<ImageView
android:layout_width="48dp"
android:layout_height="48dp"
android:src="#drawable/no_photo"/>
</FrameLayout>
I add views to layout:
int allItems = 50;
int currentItem = 0;
while(currentItem < allItems)
{
FrameLayout view = (FrameLayout) inflater.inflate(R.layout.fl, null);
linearLayout.addView(view);
if (linearLayout.getMeasuredWidth() >= this.getWidth())
{
linearLayout.removeView(view);
break;
}
}
but linearLayout.getMeasuredWidth() and this.getWidth() is 0;
I know, that i must use View.measure method to calculate view size before it became visible, but i don't know where and how it use.
Edit your code as below :
Display display = getWindowManager().getDefaultDisplay();
int maxWidth = display.getWidth();
int widthSoFar=0;
int allItems = 50;
int currentItem = 0;
while(currentItem < allItems) {
FrameLayout view = (FrameLayout) inflater.inflate(R.layout.fl, null);
linearLayout.addView(view);
view .measure(0, 0);
widthSoFar = widthSoFar + view.getMeasuredWidth();
if (widthSoFar >= maxWidth) {
linearLayout.removeView(view);
break;
}
}
Hope this helps you