Android :: TextView Gravity - Implementation Of ViewGroup With Some TextViews In It?
Nov 10, 2010
Has anyone tried to write his own implementation of ViewGroup with some TextViews in it? I have a problem, that TextViews in such an implementation don't respect gravity attribute (TextView.setGravity(Gravity.CENTER);) and text is positioned in the top left corner.
If enyone is interested, I just overwrote method onMeasure() (for all my TextViews) and changed call from super.onMeasure() to setMeasuredDimension(int, int) and gravity started to work normally.
Basically, in my custom layout I use the following class to display text:
CODE:................................
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Sep 23, 2010
I can use android:gravity="bottom|center_horizontal" in xml on a textview to get my desired results but I need to do this programmatically.
My textview is inside a tablerow if that matters in a relativelayout.
I have tried:
CODE:........
But if I understand that correctly, that would apply it to the tablerow? not the textview?
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Apr 26, 2010
I am looking for Wrappable ViewGroup just like what TextView do. I need this for layout. This should be something like LinearLayout but wrappable to multiple lines. Or do I need something custom?
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Aug 14, 2010
I know we can set the following value to the anroid:gravity and android:layout_gravity :
center
center_vertical
center_horizontal , etc.
But i am confused regarding these both. what is the difference between the usage of android:gravity and android:layout_gravity?
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May 14, 2009
What is the difference between those attributes? According to the documentation of R.attr, there isn't any difference (doc text is exactly the same, see http://developer.android.com/reference/android/R.attr.html), but apparently, that's simply not true. For example, the gravity attribute can be used on EditText to set the text alignment (e.g. left, center, right).
I often found that neither of them work to align a view at all. For example, I need to float two text views in a relative layout, one going to the left below a title bar, the other going to the right below the title bar. So what I did was this:
CODE:...............
That doesn't work, however. The left text is indeed aligned to the left inside its parent (the relative layout), but the right text is not aligned to the right; instead, it's placed directly to the right of the left text.
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Sep 26, 2010
I know there are tons of questions about this already floating around SO but I've read a bunch of them and still cannot get my 3rd column to align to the right.
CODE:........................
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Jun 7, 2010
I know this question is definitely solved somewhere many times already, please enlighten me if you know of their existence,
Quick rundown:
I want to compute from a 3 axis accelerometer the gravity component on each of these 3 axes.
I have used 2 axes free body diagrams to work out the accelerometer's gravity component in the world X-Z, Y-Z and X-Y axes. But the solution seems slightly off, it's acceptable for extreme cases when only 1 accelerometer axis is exposed to gravity, but for a pitch and roll of both 45 degrees, the combined total magnitude is greater than gravity (obtained by Xa^2+Ya^2+Za^2=g^2; Xa, Ya and Za are accelerometer readings in its X, Y and Z axis).
More detail:
The device is a Nexus One, and have a magnetic field sensor for azimuth, pitch and roll in addition to the 3-axis accelerometer.In the world's axis (with Z in the same direction as gravity, and either X or Y points to the north pole, don't think this matters much?), I assumed my device has a pitch (P) on the Y-Z axis, and a roll (R) on the X-Z axis. With that I used simple trig to get:
Sin(R)=Ax/Gxz
Cos(R)=Az/Gxz
Tan(R)=Ax/Az
There is another set for pitch, P.Now I defined gravity to have 3 components in the world's axis, a Gxz that is measurable only in the X-Z axis, a Gyz for Y-Z, and a Gxy for X-Y axis.Gxz^2+Gyz^2+Gxy^2=2*G^2 the 2G is because gravity is effectively included twice in this definition. Oh and the X-Y axis produce something more exotic I'll explain if required later.From these equations I obtained a formula for Az, and removed the tan operations because I don't know how to handle tan90 calculations (it's infinity?).So my question is, anyone know whether I did this right/wrong or able to point me to the right direction?
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Oct 8, 2010
Available in the Market, Android 2.2 only http://www.youtube.com/watch?v=1cZuoi3-B0g&feature=player_embedded
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Nov 4, 2009
In eclipse layout editor for LinearLayout under LinearLayout one gravity is there and under "Misc" LayoutGravity is there.What is the difference between these two? How to set the layout gravity of a linear layout from code?
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Nov 9, 2010
I have ScrollView with RelativeLayout as a child of ScrollView. I am trying through JAVA code to set Layout_Gravity to CENTER so my RelativeLayout is centered (horizontally and vertically) in the middle of ScrollView (that covers whole screen).This works fine in XML and produces desired result, but when I try to do this programmatically, it seems there is no way to set Layout_Gravity of RelativeLayout. I tried using LayoutParams, but couldn't find anything there that would help me to center RelativeLayout in the middle. So, am I missing something or this simply can't be done?
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Apr 11, 2010
I want to add ImageView to FrameLayout with Gravity or margins. but FramLayout and ImageView has no method about that(Actually, I can't found that). Reason that selects Framelayout is to put ImageView on ImageView. code...
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Apr 27, 2010
I need to create a GUI (layout+views) in my .java activity class (I know it's far more flexible and easier to use .xml layout file, but I don't want to use it for now).
I can't find any setGravity() (but a "Gravity" object I can't figure how to use) or any set setMargin() method for the "View" object. What is the easiest way to do it?
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Jun 5, 2014
So i have android 4.2.2 and i installed xposed and gravity box. And my problem is that i have doubled fast settings in notification bar: stock and nearly the same added from this mod. Any solutions that i would have only one visible?
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Oct 7, 2010
I'm unable to change the layout_gravity of a Button programmatically, does anybody know how to do this?The gravity attribute is easily changed using Button.gravity(), Ie it changes the gravity of the text inside the button I cannot change the gravity of the button itself. I also cannot seem to find this in any of the layout params contructors.
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Nov 16, 2010
I want to do something like that. For example, I have a textview with String
Alibaba love Mary so muck. In that String alibaba and Mary have a event to open something but I can't know how to use event for Mary and Alibaba seperately
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Feb 22, 2009
I have run mediaplayer in SDK which can play media in res/raw folder successfully on emulator , but now I wanted to run it on my hardware which have already successfully implemented the android kernal and file system and audio, video drivers etc. I have no experience to implement JAVA app . I once implemented mplayer app written in C to my linux OS which only need to copy the final executable file , but now I don't know which files or folder should I copy to my platform because I have no basic knowledge of Java although I have run successfully on my emulator.
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Jul 28, 2010
I've been playing around with the new LVL announced yesterday and wanted to write a policy which only stops the user when it is certain that he does not have a license. In other words, the policy will only "dontAllow" the user if the last meaningful response from the licensing service was NOT_LICENSED. Therefore, if the user is offline when they first use the app, then they will be allowed in. The idea behind this is that I don't want genuine paying users to ever (within reason) be inconvenienced by this licensing system. The downside is that all the user needs to do is clear the app data and go offline before restarting the app. The app will continue working until they go online (and restart the app). My thoughts are: 1. Most users won't know about that workaround 2. Those users that are happy to use that workaround, probably wouldn't pay for the app anyway.
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Jun 2, 2010
Create an anonymous implementation of OnClickListener
private OnClickListener mCorkyListener = new OnClickListener() {
public void onClick(View v) {
// do something when the button is clicked}};
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May 10, 2010
I have 5 text views to be added horizontally,and it needs to occupy the displaywidth.When i change the screen orientation,it should change based on it.Is that can be done by Layout or it should be done programmatically..
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May 16, 2010
Gravity Fights 2.0. Inspired by the Amiga Classic GRAVITY FORCE, the new Android shooter GRAVITY FIGHTS 2.0 is a great psychedelic experience. The involving planet Synapsys is populated by the infinite sides of reality in the space of an insane mind. To let the energy flow in the planet, shot all the triggers of illusion that fragment its mind to open the doors of perception.
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Sep 2, 2009
How to use viewGroup in android
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Mar 15, 2010
Can you please tell me how can I setHeight for a ViewGroup? I see there is a layout(l,t,r,b);
But that is different form setHeight(), since I don't know where should be the top/bottom of the viewGroup. I need to set the height of the ViewGroup and return that to ListAdapter.
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Nov 10, 2009
We have discovered a potential bug in the implementation of AppWidgets. Here is a simple reproducer.
Attached is the code for an application containing a TestActivity and a TestWidget. TestActivity extends MapActivity and TestWidget is a simple widget provider which updates a TextView every 2 seconds. Now if the TestActivity is launched with no instance of TestWidget running, it works just fine. But if the TestActivity is launched after placing the TestWidget on the home, it results in ClassNotFoundException. Here is what we get:
CODE:.............
So it seems we have an inconsistency in the way the class loader works for the same apk.
WORKS - Launch the application by itself, without invoking the Widget. DOES NOT WORK - Create a Widget on the Home screen and then launch the application from the launcher.
The source code for this application (http://www.yousendit.com/ download/TzY3ZGVhZy96NE4zZUE9PQ) has been attached. Hope someone from the Android team can shed light on this behavior.
This error is seen on the 1.5r3 SDK. Not sure if this has been addressed in 1.6 and 2.0 SDKs..
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Oct 27, 2010
I'm want to implement Dynamic SlideShow of Images similar to Gallery. On Drag, i Should be able to change to next images. I'm looking into Gallary1.java class from APIDemo Example, i think there is no sufficient information in that, so is there any better code example.
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Jul 2, 2009
I am trying to implement picture gallery in my application but it's not scrolling smoothly can someone suggest me what could be the reason or how to do it.how it is implmented i the phone.
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Dec 5, 2009
I am trying to create certificates for users for my program. I am have created a keystore and included the publickeystore.store with my application in the assets folder. I created all the certificates using the keytool program from JAVA. When I try to authenticate the certificate I get the following error: 12-05 17:32:49.962: ERROR/AndroidRuntime(891): Caused by: java.security.KeyStoreException: KeyStore JKS implementation not found
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Oct 30, 2010
I'm working on an LVL implementation and I want to use as many different device identifiers as I can. I have considered using IMEI numbers but I've discarded that because a) it's intrusive and b) not all devices will have them.
What might I use to fingerprint a phone for license verification?
As an aside, how have your experiences with LVL been so far? Any pitfalls? I'm not asking for anyone to share their implementation details as that would give the hackers ideas.
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Sep 28, 2010
I would like to design a layout for my android app which has imageviews/Textviews placed as shown in the figure below.
Right now, i tried to use Absolute layout, but i know that will create problems as the screen size changes.
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Nov 5, 2010
I am simply trying to create a layout where there are multiple TextViews (and ultimately an EditText) stacked vertically in the activity. However, the only thing displayed is my top title bar and the first TextView (with the "Name" text). Why won't anything else show up? Here is my code...
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Mar 17, 2010
I have a class that extends android.app.Dialog, the layout is done in an xml file, and the setup (button listeners, etc) is done on the onCreate method. My problem is that whenever the dialog is displayed, then dismissed, and displayed again, the Editable TextViews are still populated with the information that was displayed previously. What is the common way to clear these text fields?
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