I have purchased and successfully rooted a few of Android devices in
the past, and I have also installed custom ROM's on most of them after
rooting ... such as the Cyanogen ROMs. However, each time in the past,
I had performed these actions on an unlocked device.
Now, I'm thinking of purchasing a
On Dec 18, 4:54 am, Kostya Vasilyev kmans...@gmail.com wrote:
[ ... ]
Use this instead of measureText, to avoid calculating width for the same
text over and over again (from current position to the end of the string).
Thank you very much.
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Yes, but I can only apply this math if I know how the text will be
word-wrapped. This means that I have to word-wrap it myself and then
do the calculations.
The problem with this is that I may not wrap the text the same way
that the TextView (or other subsidiary object) wraps it.
I'm sure I can
Thank you!
Now I think I more or less understand the basic principles that are
outlined in that article, and I'm pretty sure that I'll fill in any
remaining gaps in my knowledge as I dig in and apply these principles
to my own case.
I'll post my results or any questions I might have if I hit any
Hello. Sorry for the late reply. For some reason, your response didn't
show up in the same thread as my question, and I only noticed it now.
I have already looked through the TextView source code. The drawing of
the text in the view is not done within that object. A subsidiary
object handles this
In a different thread, I asked if there was a way to query some object
to define what subset of a long piece of text is actually being shown
within a given TextView.
Based on the scant feedback I received in response to this query, I
have come to the conclusion that android probably does not
I've already looked at the TextView source, as well as the source of
the Paint object and other objects. I haven't been able to find
anywhere where the data I'm looking for is stored, or at least
returnable. But there are many android objects to look through, and as
I mentioned, I'm trying to
PS: Is there perhaps a better object to use for this purpose than a
TextView?
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Ah, yes. I see that I just happened to luck out, as the file.encoding
property on my device must be (currently!) set to utf-8.
Thanks.
This begs another, related question: how do I know what encoding to
use, in the first place ... for a TextView in the Android environment?
If I cannot count on
PS: I am writing Android-specific code. The class I am using will
never work outside of the Android environment, for reasons that go
beyond the issue of character encoding.
So does this mean that in my case, I _should_ do the moral equivalent
of this?
String content = new String(bytes,
Yes. I should have written this after drinking my morning coffee. On
my way to work, I woke up a little and remembered that this encoding
pertains to the _source_ (in my case, the epub bundle) and not the
_destination_ (the TextView).
Luckily, I know something about the source: epubs are supposed
Yes. I should have written this after drinking my morning coffee. On
my way to work, I woke up a little and remembered that this encoding
pertains to the _source_ (in my case, the epub bundle) and not the
_destination_ (the TextView).
Luckily, I know something about the source: epubs are supposed
Thank you.
I have checked the items that I am displaying, and all of them contain
tags like this:
meta http-equiv=Content-Type content=text/html; charset=utf-8/
In every case, the charset is specified as utf-8 or UTF-8.
Apparently, this is not sufficient to cause the text to be interpreted
Thank you very much.
1) I am not explicitly setting any unicode character code in the
TextView. I display data that exists within e-books that are stored in
epub format. I do not alter this data at all. I display it as is. Most
of this displays OK, but quotes look like the following garbage ...
PS: I forgot to add that after I build this map, I just do the
following to display the text within my TextView:
// this.section is a String which holds the name of the
// ebook section that I want to view. It must be a key
// to the above-mentioned LinkedHashMap containing the
//
OK. I figured it out after thinking more about what you said in your
item 3. I need to convert the bytes that come out of the zip file into
correct unicode. I changed the method as follows, and now it renders
the characters properly:
private boolean readEpubFile() {
FileInputStream f
... but I should actually use a ByteArrayOutputStream to avoid
breaking up unicode characters that might span the 65536-byte boundary
of my input buffer:
private boolean readEpubFile() {
FileInputStream f= null;
ZipInputStream z= null;
byte
I should clarify that I now don't need to do this:
String content = new String(bytes, UTF-8);
This is because java's default is unicode. I get the same result with
or without the second argument to the String constructor.
I now see that my original error resulted because I was converting to
Thanks. I'll check the content variable later today or tomorrow and
post back here.
In the mean time, I'm wondering if perhaps this isn't a unicode issue,
after all. Upon closer examination, it seems that the only characters
that appear as garbage in the data I'm examining are quote characters
I am parsing epub books, and I want to render the pages inside of a
TextView.
I am able to get the book content, and I display it as follows. Assume
bookContent is a String which contains the text from an epub book
section, and assume that this.view is a reference to my TextView ...
I am parsing epub books, and I want to render the pages inside of a
TextView.
I am able to get the book content, and I display it as follows. Assume
bookContent is a String which contains the text from an epub book
section, and assume that this.view is a reference to my TextView ...
Assume I have a block of text that is too long to fit into a standard
TextView. When I put that text into the TextView via the setText()
method, it gets truncated.
Is there any way that I can then query this TextView or some other
component in order to find out the subset of the text which is
Assume I have a block of text that is too long to fit into a standard
TextView. When I put that text into the TextView via the setText()
method, it gets truncated.
Is there any way that I can then query this TextView or some other
component in order to find out the subset of the text which is
Thank you very much.
I am wanting changeable text to appear in the images. Is it possible
to superimpose text on an ImageView? If so, then this will provide the
exact functionatlity that I'm looking for.
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I should clarify that I want the text to be wrapped and centered on
the images, just like the effect I would get by setting the following
attributes on my TextView:
android:layout_width=fill_parent
android:layout_height=fill_parent
android:gravity=center_vertical|center_horizontal
I
I just tried your suggestion using two TextViews within a FrameLayout.
It works perfectly, so I don't have to worry about manually wrapping
text within an ImageView.
Here's the logic:
In my onOptionsItemSelected() method, after a menu click:
* TextView 1 is currently in the front
* Put a new
Yes, I forgot that ever since Java 5 (or maybe earlier?), the Java
Memory Model definition specifies that classes are ininitialized just
in time; i.e., not until they are first accessed.
I mulled this over for a while, and in the end, I still opted for code
generation. Although the code
Yes, I forgot that ever since Java 5 (or maybe earlier?), the Java
Memory Model definition specifies that classes are ininitialized just
in time; i.e., not until they are first accessed.
I mulled this over for a while, and in the end, I still opted for code
generation. Although the code
I'd like to change the background image of a TextView by morphing it
into the new image. What I mean by this is that I want the old image
to fade out at the same time the new image is fading in, so that it
looks like the old image is transforming itself into the new image.
I know how to cause the
Thanks, but your suggestion won't work for me, because I can't
statically access the values of arrays defined as resources. These
arrays can only be retrieved via an already created Context object
through the use of getResources().getStringArray().
Recall that I am looking to use these values to
My main reason is that I want to have public static final mapped
values available to a number of classes. This way, I can instantiate
other static final fields using some of the mappings in this HashMap.
I can't do that if I have to decode an XML file at run time.
If I could dereference
My android app is getting an Out of memory error without a useful
stack trace. It occurs after I have repeatedly re-invoked its main
logic through a menu interaction, which leads me to believe that
there's a memory leak somewhere.
I say that the stack trace isn't useful because it doesn't include
In my app, I'd like to define some static resources in an xml file
which can be accessed via a HashMap. I know I can do this at run time
in a manner similar to the one which is described here:
OOPS: I wrote aadb, above, but I meant to type aapt.
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Thanks to both of you. I'm now going to try what each of you
suggested.
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Does anyone have any ideas or suggestions about this?
I know I can subclass TextView and then override the onMeasure()
method to retrieve the view's measured dimensions. However,
onMeasure() gets called _after_ I make a call to
setBackgroundDrawable() on my TextView object. I want to get the
Does anyone have any ideas or suggestions about this?
I know I can subclass TextView and then override the onMeasure()
method to retrieve the view's measured dimensions. However,
onMeasure() gets called _after_ I make a call to
setBackgroundDrawable() on my TextView object. I want to get the
I'll look into 9-patch images. I'm sure the learning curve will be
worthwhile.
Thank you!
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I know how to use AsyncTask in a standard manner to manage operations
that are in the background in relation to a UI thread.
However, I want to run a task in the background which might run for a
very long time under certain circumstances. In these cases, I would
like to force the background task
Of course I know about cancel(). When I mentioned the use of get(long
timeout, TimeUnit unit), I thought it would be obvious that I would
then invoke cancel() to terminate my overly-long-running task. But
then, my UI thread would block while I'm waiting, as I stated above,
which is not desirable.
OK. Thank you.
So how do I interface to my UI from the new thread that I start? Once
the long-running task completes (assuming it finishes before my time-
out period), I want to notify my UI thread so it can take appropriate
action. If this was a short-running task, I could have easily used the
OK. I'm going to make a wild guess as to how I might do this. Could
someone comment on the reasonableness of this approach under
Android? ...
1. As part of my Activity class, define a message type called, for
example, MESSAGE_LONG_RUNNING_TASK_RESULT.
2. As part of my Activity class, define a
Thank you, social hub. Our messages crossed. I think that the message
handler I describe in my previous post is the same one that you are
referring to.
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Is there a way to tell Android to do the following when setting the
background image for a TextView?
1. Scale the image so that it's just large enough to fill the the
entire viewing area without any black borders, while still maintaining
its aspect ratio. This might require clipping once the
I have an Activity that makes use of a TextView that's defined in a
standard manner in layout/main.xml.
In my app, I want to get the dimensions of the drawing area in order
to decide how I am going to draw into it.
If my TextView is referenced as this.tv, I know I can get these
dimensions by
Thanks to all. I also have generally been sticking with the pattern
that's described here. I guess that will be mostly safe, taking Bob
Kerns' exception into account.
And thanks to Bob Kerns for submitting that issue. I hadn't realized
that there was no known contract for this. I hadn't found
In general, does it matter in an Activity if I put the call to
super.onResume() at the beginning or the end of my own onResume()
method?
In other words, I can do this ...
@Override
public void onResume() {
super.onResume();
// do my stuff
}
... or this ...
@Override
public void
I can't see why your default ringtone is reset on each reboot.
Did tou try TapSound freely available on Android Market ?
The second tab simply set your ringtone from any .mp3 on your sdcard.
I don't know why this happens, either. The ringtone I use is one of
the standard ones which comes with
On Mar 29, 5:32 am, HippoMan hippo.mail...@gmail.com wrote:
Is there no way to set the default ringtones programmatically, without
using the ringtone picker?
... nor with any application that requires human interaction?
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On Mar 29, 5:32 am, HippoMan hippo.mail...@gmail.com wrote:
[ ... ]
I don't know why this happens, either. [ ... ]
I should add that I am not using any app which affects sounds or
ringtones, at least not that I know of.
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I figured out a way to do this. This is a stripped down version (no
error checking, etc.).
I set the default ringtone and notification to my preferred values
from out of the standard set that comes with my N-1. Then, I make sure
that the volume is set to the maximum on ringtones, notifications,
I'd like to programmatically set a new default ringtone without using
RingtonePicker. In other words, there is a certain ringtone that is
already installed on my system, and I want to programmatically set it
to be my default ringtone without any human interaction.
The reason I want this is
I'd like to set a new default ringtone without using the ringtone
picker. In other words, there is a certain ringtone that is already
installed on my system, and I want to programmatically set it to be my
default ringtone without any human interaction.
The reason I want this is because every time
I'd like to do some additional code generation after the R.java file
has been created by aapt. Specifically, I want to auto-generate some
helper methods to retrieve items from R.java.
Is there any way put my own, custom utility in place which will
generate this extra code as part of every Android
On Mar 21, 1:28 pm, Kumar Bibek coomar@gmail.com wrote:
I don't think so it is possible.
Thank you, but after much digging around, I figured out that this is
indeed possible.
Here's what I did (under MacOSX; it should work the same under Linux,
but there
will no doubt be slight differences
On Mar 21, 4:13 pm, Bob Kerns r...@acm.org wrote:
[ ... ]
Instead, I'd just use an xslt ant task to generate your helper class
-- call it X -- and make it import R. If you like, you can even make
it a subclass (and give it inner classes that are subclasses of R's
inner classes).
[ ...
On Mar 21, 7:34 pm, Bob Kerns r...@acm.org wrote:
Actually, mine runs as part of the normal build process too. Using ant
builder instead of a program builder gives you full cross-platform
compatibility. We're both adding builders, just different types.
Either one will work fine. But I
On Mar 21, 8:48 pm, HippoMan hippo.mail...@gmail.com wrote:
Also, I can't figure out how to get my auto-generated class to refresh
in the IDE after it gets re-created. I have to select Refresh or hit
F5 in order for any changes to be noticed. If I use ant, will I be able
to force the refresh
Never mind. I just didn't have proper Refresh settings. I fixed them,
and now everything refreshes the way it's supposed to.
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Let me get this straight - you would rather have a runtime exception that
you just catch and ignore than a compile time error that will quickly
identify your problem and allow you to fix it on the spot?
Why exactly would you prefer this?
I want to change the behavior of my app by means of
Resources has getIdentifier() for this. However, this is significantly
less efficient than just using the R static data member. Use it if you
have to (and cache the lookups), but avoid compile errors doesn't
strike me as a great reason to do so.
Thank you.
As I described in more detail in my
I know that I can retrieve a string within an Activity as follows:
this.getString(R.string.foobar)
(assuming that I have previously defined a string named foobar).
However. I'm wondering if there also might be an alternate way to
retrieve this same string in a functional manner, without an
Under the 2.1 SDK, is there a way to test for the phone's OS version
within the app, and to enable or disable features based on this OS
version?
In other words, I'd like to do the moral equivalent of this ...
if (os_level 1.6) {
// code goes here
}
else if (os_level 2.1) {
// code goes
I understand how varargs work and the java mechanics for using them
within the doInBackground() method of AsyncTask. However, I'm not
clear about why varargs are used here and under what circumstances
there will be more than one argument passed to this method.
I have some specific questions:
1.
OK. I got it. I missed the fact that several arguments could be passed
to execute.
Everything else is now clear to me.
Thanks for the explanation.
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