<HorizontalScrollView
android:id="#+id/horizontalScrollView1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:fillViewport="true"
android:layout_weight="19" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="horizontal" >
<LinearLayout
android:id="#+id/layoutScrollContainer"
android:layout_width="1dp"
android:layout_height="match_parent"
android:background="#drawable/card_background" >
<
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/>
</LinearLayout>
</LinearLayout>
</HorizontalScrollView>
I want to get the width of the HorizontalScrollView1 and set it to the LinearLayout (layoutScrollContainer)
This is my code in java but my app crashes , and I cant understand why . If you know how to do this with xml please tell me.
HorizontalScrollView scrollView = (HorizontalScrollView) findViewById (R.id.horizontalScrollView1);
LinearLayout lrLayout = (LinearLayout ) findViewById (R.id.layoutScrollContainer);
int width = scrollView.getMeasuredWidth();
lrLayout.setLayoutParams(new LinearLayout.LayoutParams(width, LinearLayout.LayoutParams.MATCH_PARENT));
So... you haven't defined any ID for the Linear Layour. Check this:
LinearLayout lrLayout = (LinearLayout ) findViewById (R.id.llayoutContainer1);
Just set the id for the linear layout :D
it crashes because the LayoutParams refers always to the Parent. In your case you are getting a ClassCastException because you are using the LinearLayout.LayoutParams
I know this is old, but I came across it and have the answer.
It crashes probably because you doing this in onCreate - before the elements have been drawn or measured.
The best way to handle this is to use the ViewTreeObserver and after the layout is drawn, you can reset the width:
How can you tell when a layout has been drawn?
in particular, scrollView.getMeasuredWidth() won't work until the view is measured, after onCreate
Related
I have a relative layout:
RelativeLayout battle_layout = (RelativeLayout) findViewById(R.id.battle);
I need to attach here a child (a JPG image from resources/drawable).
I was writting in c# and javascript earlier, but here it's a bit harder to accomplish :)
Is there someone who could help me? Thanks!
Maybe you can use one of these options. programmatically or in xml:
Add a ImageView to your layout
Set the image as background of your layout
Layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/YOUR_IMAGE">
<ImageView
android:src="#drawable/YOUR_IMAGE"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
Code
ImageView imageView = new ImageView(this);
image.setImageResource(R.drawable.YOUR_IMAGE);
battle_layout.addView(image);
I am facing a seemingly simple issue but after many hours on the case now I cannot figure it out. I am trying to create a ListView with rows that contains an ImageView which re-sizes based on the ImageView's image. This works through subclassing the ImageView and giving it a height ratio to follow since I know the image size before loading it:
Custom subclass of ImageView onMeasure method:
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (mHeightRatio > 0.0) {
// set the image views size
int width = MeasureSpec.getSize(widthMeasureSpec);
int height = (int) (width * mHeightRatio);
setMeasuredDimension(width, height);
}
else {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
In the adapter I set the ratio of the ImageView:
holder.couponImage.setHeightRatio(359.0/1080.0);
The Problem is that I also want an overlay on the ImageView in form of a RelativeLayout with a semi-transparent background and containing a TextView. The issue is that when the ImageView Rezises the overlaying RelativeLayout doesn't, the white in the image below is the RelativeLayout:
The row XML looks like this:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<se.bdms.babydirect.views.DynamicHeightImageView
android:id="#+id/couponImage"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:scaleType="fitXY"
android:adjustViewBounds="true"
android:src="#drawable/coupon_01"/>
<RelativeLayout
android:id="#+id/relRedeemedOverlay"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#color/almostWhiteTransparent"
android:gravity="center"
>
<se.bdms.babydirect.views.TextViewMega
android:id="#+id/lblRedeemed"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextField"
android:textColor="#color/headlineGray"
android:layout_centerInParent="true"
android:textSize="24sp"/>
</RelativeLayout>
</RelativeLayout>
I have tried multiple solutions to fix this among them: this and this.
I have succeeded in making the RelativeLayout the same size as the ImageView by subclassing that in the same way the ImageView is subclassed but then then TextView is still not centered vertically and stays at the top like nothing happened.
I would like to let the RelativeLayout know that the row height has changed and fill the row and then the TextView centers itself based on the new height.
Does anyone have a clue what to do about this?
Any help is greatly appreciated!
I think the problem is just that you need to tell the overlay that it is the same height as the image. You'll be able to do that because the parent is already a RelativeLayout. I'm showing aligning the child RelativeLayout to the ImageView, but you could also use alignParentTop="true" and alignParentBottom="true". Also, I think best is if the parent view has height wrap_content, and both children are match_parent.
Once your overlay is the full height of the item, your centerInParent should work to center it within the overlay (which it already is).
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<se.bdms.babydirect.views.DynamicHeightImageView
android:id="#+id/couponImage"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
android:adjustViewBounds="true"
android:src="#drawable/coupon_01"/>
<RelativeLayout
android:id="#+id/relRedeemedOverlay"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignTop="#id/couponImage"
android:layout_alignBottom="#id/couponImage"
android:background="#color/almostWhiteTransparent"
android:gravity="center"
>
<se.bdms.babydirect.views.TextViewMega
android:id="#+id/lblRedeemed"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextField"
android:textColor="#color/headlineGray"
android:layout_centerInParent="true"
android:textSize="24sp"/>
</RelativeLayout>
</RelativeLayout>
Let me know whether that works.
I'm trying to set an imageview's resource like so:
Code:
ImageView imageView = new ImageView(getApplicationContext());
imageView.setImageResource(R.drawable.bg);
Yet I see nothing on my screen.
I can set
imageView = (ImageView) findViewById(R.id.bgView);
And it works, but in my instance I can't use this because I need apply the imageview to an arraylist of imageviews.
Is there any other way to construct my imageview or am I doing something wrong?
Edit:
My xml looks like:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/entire_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/black"
tools:context="com.example.guilyan.Game" >
<ImageView
android:id="#+id/bgView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:contentDescription="#string/Descript"
android:scaleType="fitXY"
android:src="#+drawable/testpicks" />
</FrameLayout>
I think u should add the dynamically created image view to your layout.just try this.Suppose if your layout id is frameLayout then
frameLayout.addView(imageView);
Using of
new ImageView(getApplicationContext()); not correct.
You need use activity context, not application.
And of course after initialization of view you need attach it to parent.
I already tried all things I could find (on stackoverflow and the net) but I somehow cannot set my dialog to fullscreen. It has a scrollview with a textview in it, and when there is not much text in the textview the scrollview is not fullscreen. How can I force it to be fullscreen even when there is not much text visible ?
I create the dialog like this:
final TextView box;
final Dialog info = new Dialog(cx);
final ScrollView scroll;
info.setContentView(R.layout.dialoginfo);
info.setTitle("Info");
info.setCancelable(true);
info.getWindow().setFlags(LayoutParams.FLAG_FULLSCREEN, LayoutParams.FLAG_FULLSCREEN);
scroll = ((ScrollView) info.findViewById(R.id.scrollviewinfo));
scroll.setPersistentDrawingCache(ScrollView.PERSISTENT_NO_CACHE);
scroll.setScrollbarFadingEnabled(false);
box = (TextView) info.findViewById(R.id.infotext);
box.setText(text);
info.show();
This is the xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:id="#+id/infolayout"
>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/ImageView01"
android:layout_weight="1.0"
android:id="#+id/scrollviewinfo">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="#+id/infolayout2">
<TextView android:layout_margin="5dip" android:layout_width="fill_parent" android:layout_height="wrap_content"
android:id="#+id/infotext"
android:textSize="8sp"
android:text=""/>
</LinearLayout>
</ScrollView>
</LinearLayout>
It looks like your ScrollView has its height set to wrap_content, I'd first try replacing it with fill_parent.
Here are some other resources that may help you:
How can I get a Dialog style activity window to fill the screen?
I've never used the setFlags() method, so this may give you the same results. Basically try replacing
info.getWindow().setFlags(LayoutParams.FLAG_FULLSCREEN, LayoutParams.FLAG_FULLSCREEN);
with
info.getWindow().setLayout(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
Alternatively, if you wanted more exact control over the height, you can create an instance of layout params, as the first answer here describes:
How to make an alert dialog fill 90% of screen size?
You can also use this code to get the screen size, if you wanted to modify it to be slightly smaller than full screen.
Display display = ((WindowManager) getSystemService(WINDOW_SERVICE)).getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();
There are quite a few other ways to get the current screen size, too, this is just one example. Good luck!
Have you tried setting layout_height of the ScrollView to "match_parent" (and you can set the LinearLayout to "match_parent" too, though I don't think it's necessary)?. I'm guessing it shrinks when there isn't much text because it's set to "wrap_content". Try this:
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:layout_below="#+id/ImageView01"
android:layout_weight="1.0"
android:id="#+id/scrollviewinfo">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="#+id/infolayout2">
...
</LinearLayout>
</ScrollView>
Try wrapping your dialog custom layout into RelativeLayout instead of Linear Layout. That worked for me.
I'm stuck on a problem and I don't know, what causes it.
I have a very simple Layout like this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="#+id/my_text_view"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_gravity="NOTE_THIS"
android:textColor="#FFFFFF"
android:textSize="22dp"
android:text="TestText"/>
</LinearLayout>
which is included inside another layout. If I change the gravity inside the xml I see same Result in Layout-Editor and on my phone. If I wanna apply the Gravity programatically like with myTextView.setGravity(Gravity.CENTER) it doesn't Change anything. And I cannot set LayoutGravity in Java on a TextView
I'll tried for debug purposes to include them three times each with another gravity which does work even. So I assume everything is alright with my Layout and there has to be a Bug or something else I miss.
Can someone give me a hint what I also can try, or what causes this problem?
Set your TextView's width as android:layout_width="fill_parent" then you can set it programmatically using myTextView.setGravity(Gravity.CENTER)
You need to set the gravity of the LayoutParams object instead of the View itself:
TextView tv = new TextView(getApplicationContext());
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.FILL_PARENT);
lp.gravity = Gravity.CENTER;
tv.setLayoutParams(lp);
When you use LinearLayout as parent, then layout_gravity comes in picture which align control but not content inside the control so,
Instead using android:layout_gravity use android:gravity.