imageview

Android - ViewRootImpl$CalledFromWrongThreadException

≯℡__Kan透↙ 提交于 2019-11-27 05:15:02
I was using this , to DISPLAY IMAGES FROM THE INTERNET but it throws an error as below: 04-12 13:45:05.337: E/AndroidRuntime(27897): Caused by: android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. public class Order extends Activity { @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); new DownloadFilesTask().execute(); } private class DownloadFilesTask extends AsyncTask<Void, Void, Void> { protected void onPostExecute(Void result) { } @Override protected Void

Android ImageView - Get coordinates of tap (click) regardless of scroll location or zoom scale

纵饮孤独 提交于 2019-11-27 05:13:30
问题 Background: I have an ImageView that I've modified to be scrollable (drag) and zoom-able (pinch zoom). I used the exact technique mentioned in the "Hello, Android" 3rd edition book that can also be found here. This technique uses matrix transformation to handle both scrolling and zooming. My Problem: When a user taps on the image, I want the coordinates of that tap in relation to the image itself, regardless of how the image has been scrolled or magnified. For instance, if my image is

How to crop Bitmap Center like imageview? [duplicate]

落爺英雄遲暮 提交于 2019-11-27 05:13:07
问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: How to crop the parsed image in android? How does one crop the same way as Androids ImageView is doing android:scaleType="centerCrop" 回答1: Your question is a bit short of information on what you want to accomplish, but I guess you have a Bitmap and want to scale that to a new size and that the scaling should be done as "centerCrop" works for ImageViews. From Docs Scale the image uniformly (maintain the image's

How can i develop the PagerSlidingTabStrip with images in android?

旧街凉风 提交于 2019-11-27 04:44:03
问题 I am using the PagerSlidingTabStrip in myapp .In this titles are setting fine but images are not setting tabstrip .I searched alot in google but didn't get the correct result.But this is very important for me. Please see screenshot below Advance thanks to all. 回答1: I was also interested doing same as yours, Finally I did it for you. Import 'SlidingTabsBasic' demo from android-sdk sample or download it from google android samples from Here. 1.create custom_tab.xml with only a TextView 2.In

How to show an image from an url in android

試著忘記壹切 提交于 2019-11-27 04:39:45
问题 I have looked around the internet but haven't been able to find a working example on how to show an image from an url. The below code is crashing and I can't find out why.. Any help is greatly appreciated. Thanks. TesteImages.java: package pac.image3; import java.io.IOException; import java.io.InputStream; import java.net.MalformedURLException; import java.net.URL; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.Bundle;

Android: OutofMemoryError: bitmap size exceeds VM budget with no reason I can see

让人想犯罪 __ 提交于 2019-11-27 04:28:44
I am having an OutOfMemory exception with a gallery over 600x800 pixels JPEG's. The environment I've been using Gallery with JPG images around 600x800 pixels. Since my content may be a bit more complex than just images, I have set each view to be a RelativeLayout that wraps ImageView with the JPG. In order to "speed up" the user experience I have a simple cache of 4 slots that prefetches (in a looper) about 1 image left and 1 image right to the displayed image and keeps them in a 4 slot HashMap. The platform I am using AVD of 256 RAM and 128 Heap Size, with a 600x800 screen. It also happens on

how to draw line on imageview along with finger in android

老子叫甜甜 提交于 2019-11-27 04:28:40
问题 In my app I want to draw line on imageview along with finger. I want the output like the following: In this screen fish is the imageview and red lines are drawing lines. So I followed the link below to develop the app link. This is my code: public void onCreate(Bundle savedInstanceState){ super.onCreate(savedInstanceState); setContentView(R.layout.addphoto); btnAddPhoto=(Button)findViewById(R.id.add); btnEdit=(Button)findViewById(R.id.edit); imageView=(ImageView)findViewById(R.id.photo);

Resizing ImageView to fit to aspect ratio

99封情书 提交于 2019-11-27 04:26:18
I need to resize an ImageView such that it fits to the screen, maintains the same aspect ratio. The following conditions hold: Images are a fixed width (size of the width of screen) Images are downloaded from the Internet, i.e. size can only be determined later Aspect ratio for each image will vary; some are tall, some are square, some are flat ImageView's height needs to change, either bigger or smaller based on the aspect ratio of the Excess height is cropped, can't have a lot of empty space like it is by default. For example, a tiny 50x50 image on a 400 px width screen would scale the image

How to set an imageView's image from a string?

笑着哭i 提交于 2019-11-27 04:21:55
问题 I have a list of entries and some bitmap files in the res/drawable-mdpi directory. I'm trying to load the image corresponding to the string value selected from the list by generating a path string and using bitmap factory. The problem is I don't think my path is right because the bitmap is always null, even for the default image. String name = entries.get(position); String img = "res/drawable/logo_" + name.toLowerCase() + ".png"; // create the file name icon.setScaleType(ImageView.ScaleType

How can I crop a bitmap for ImageView?

笑着哭i 提交于 2019-11-27 04:08:16
I know this should be simple , but android:scaleType="centerCrop" doesn't crop Image I got image 1950 pixels wide and need it to be cropped by parent's width. But android:scaleType="centerCrop" doesn't crop Image. What do I need to do in layout to show only first 400 pixels , for instance or whatever screen/parent width is Sorry for simple question - tried to Google it - only complicated questions there. And I'm new, so don't downvote please) <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/rl1" android