[android-developers] Re: Image viewers on android phones not always the best experience?
I would recommend implementing a custom view class which extends ImageView and overrides the onTouch event. Take a look at Luke Hutch's MultiTouchController http://lukehutch.wordpress.com/2010/01/06/my-multi-touch-code-ported-to-eclair/ and samples. This will be a) Quicker to load b) Use less memory c) Give you multi-touch pinch-zoom On Jul 15, 9:35 pm, Mark Wyszomierski wrote: > Hi, > > I'm trying to use animage-display intent to..display animage: > > Uri uri = ...; > Intent intent = new Intent(android.content.Intent.ACTION_VIEW); > intent.setDataAndType(uri, "image/" + extension); > startActivity(intent); > > this works well, but some devices haveimageviewers that handle this > intent which are sub-optimal. For example, on the Nexus One, it looks > like animagegallery application starts up - this takes about 10+ > seconds before showing theimage. On the Droid, animageapplication > starts up very quickly and shows theimageright away. > > If we shouldn't rely on the above intent to provide a good experience > for the user, is there another method anyone is using? Would just like > to know before I try writing something myself, > > Thanks -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Image viewers on android phones not always the best experience?
I see I have some typos in the example above. For example: String[]
myImageWithPath should be String myImageWithPath
Just thought you should know that this isn't a completely working
example. :) Editing may be necessary.
Shawn
On Jul 17, 11:13 am, nation-x wrote:
> I just use an ImageView and resize the image before I display it. Here
> is my layout:
>
>
> http://schemas.android.com/apk/res/android";
> android:id="@+id/image"
> android:layout_width="wrap_content"
> android:layout_height="wrap_content"
> android:scaleType="centerInside"
> android:src="@drawable/wait"
> />
>
> private Display display;
>
> /* in onCreate */
> display = ((WindowManager)
> getSystemService(WINDOW_SERVICE)).getDefaultDisplay();
>
> /* add the image to the ImageView */
> String[] myImageWithPath = "/sdcard/DCIM/image.jpg";
>
> ImageView image = (ImageView)findViewById(R.id.image);
> image.setImageDrawable(getScaledDrawable(myImageWithPath));
>
> private int getScreenWidth() {
> int width = display.getWidth();
> return width;
>
> }
>
> private int getScreenHeight() {
> int height = display.getHeight();
> return height;
>
> }
>
> private Drawable getScaledDrawable(String imagePath) {
> Bitmap scaledBitmap = null;
> BitmapFactory.Options options=new BitmapFactory.Options();
> options.inSampleSize = 2;
> Bitmap origBitmap = BitmapFactory.decodeFile(imagePath, options);
>
> int oWidth = origBitmap.getWidth();
> int oHeight = origBitmap.getHeight();
>
> int screenwidth = getScreenWidth();
> int screenheight = getScreenHeight();
>
> /* Scale the image according to orientation */
> if ((oWidth > screenwidth) && (oHeight > screenheight)) {
> switch (display.getOrientation()) {
> case PORTRAIT:
> int factor = screenwidth / oWidth;
> int new_height = factor * oHeight;
> scaledBitmap =
> Bitmap.createScaledBitmap(origBitmap,screenwidth,
> new_height, true);
> break;
> case LANDSCAPE:
> factor = screenheight / oHeight;
> int new_width = factor * oWidth;
> scaledBitmap =
> Bitmap.createScaledBitmap(origBitmap,new_width,
> screenheight, true);
> break;
> }
> }
> else {
> /* Image doesn't need to be resized */
> return Drawable.createFromPath(imagePath);
> }
> System.gc();
> return new BitmapDrawable(getResources(), scaledBitmap);
>
> }
>
> On Jul 16, 4:08 pm, "Maps.Huge.Info (Maps API Guru)"
>
> wrote:
> > You can do whatever you want to with webview. It's a browser, well
> > sort of, and as such, a little css/html/JavaScript will do just about
> > anything.
>
> > -John Coryat
>
>
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[android-developers] Re: Image viewers on android phones not always the best experience?
I just use an ImageView and resize the image before I display it. Here
is my layout:
http://schemas.android.com/apk/res/android";
android:id="@+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="centerInside"
android:src="@drawable/wait"
/>
private Display display;
/* in onCreate */
display = ((WindowManager)
getSystemService(WINDOW_SERVICE)).getDefaultDisplay();
/* add the image to the ImageView */
String[] myImageWithPath = "/sdcard/DCIM/image.jpg";
ImageView image = (ImageView)findViewById(R.id.image);
image.setImageDrawable(getScaledDrawable(myImageWithPath));
private int getScreenWidth() {
int width = display.getWidth();
return width;
}
private int getScreenHeight() {
int height = display.getHeight();
return height;
}
private Drawable getScaledDrawable(String imagePath) {
Bitmap scaledBitmap = null;
BitmapFactory.Options options=new BitmapFactory.Options();
options.inSampleSize = 2;
Bitmap origBitmap = BitmapFactory.decodeFile(imagePath, options);
int oWidth = origBitmap.getWidth();
int oHeight = origBitmap.getHeight();
int screenwidth = getScreenWidth();
int screenheight = getScreenHeight();
/* Scale the image according to orientation */
if ((oWidth > screenwidth) && (oHeight > screenheight)) {
switch (display.getOrientation()) {
case PORTRAIT:
int factor = screenwidth / oWidth;
int new_height = factor * oHeight;
scaledBitmap =
Bitmap.createScaledBitmap(origBitmap,screenwidth,
new_height, true);
break;
case LANDSCAPE:
factor = screenheight / oHeight;
int new_width = factor * oWidth;
scaledBitmap =
Bitmap.createScaledBitmap(origBitmap,new_width,
screenheight, true);
break;
}
}
else {
/* Image doesn't need to be resized */
return Drawable.createFromPath(imagePath);
}
System.gc();
return new BitmapDrawable(getResources(), scaledBitmap);
}
On Jul 16, 4:08 pm, "Maps.Huge.Info (Maps API Guru)"
wrote:
> You can do whatever you want to with webview. It's a browser, well
> sort of, and as such, a little css/html/JavaScript will do just about
> anything.
>
> -John Coryat
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[android-developers] Re: Image viewers on android phones not always the best experience?
You can do whatever you want to with webview. It's a browser, well sort of, and as such, a little css/html/JavaScript will do just about anything. -John Coryat -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Image viewers on android phones not always the best experience?
I have to check again, but I thought webview won't center and zoom a single image for you. It will just show the full size image, if it's larger than the phone screen, it'll just scroll off. On Thu, Jul 15, 2010 at 4:33 PM, Maps.Huge.Info (Maps API Guru) < cor...@gmail.com> wrote: > You can always use a webview. It's pretty easy to write your own > method or use the default. Images in webview seem to work quite well > and start fairly fast. > > -John Coryat > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to android-developers@googlegroups.com > To unsubscribe from this group, send email to > android-developers+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Image viewers on android phones not always the best experience?
You can always use a webview. It's pretty easy to write your own method or use the default. Images in webview seem to work quite well and start fairly fast. -John Coryat -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
