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2014/10/16 ¤W¤È 08:14:16
android Programming Glossary: givenApplication Skeleton to support multiple screen http://stackoverflow.com/questions/12242111/application-skeleton-to-support-multiple-screen px Device's width 720 dpi Device's density 320 formula given px dp dpi 160 interchanging formula because we have px's value..
Saving Activity state in Android http://stackoverflow.com/questions/151777/saving-activity-state-in-android I am a little unclear on saving an application's state. So given this minor re tooling of the 'Hello Android' example package..
http://stackoverflow.com/questions/1554099/slow-android-emulator to 1024 which results in very fast emulator. Refer the given below screenshots for more information. Creating a new AVD with..
How to check internet access on Android? InetAddress never timeouts http://stackoverflow.com/questions/1560788/how-to-check-internet-access-on-android-inetaddress-never-timeouts point if you absolutely need a network connection at the given point in time then it might be better to use netInfo.isConnected..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon in your various comments to the various answers already given at the time of this writing. I have no intention of changing..
How to send an object from one Android Activity to another using Intents? http://stackoverflow.com/questions/2139134/how-to-send-an-object-from-one-android-activity-to-another-using-intents the case you have more than one field to retrieve from a given Parcel you must do this in the same order you put them in that..
How to make an ImageView to have rounded corners http://stackoverflow.com/questions/2459916/how-to-make-an-imageview-to-have-rounded-corners a bit to pass in the amount of feathering I need for a given image. Final code looks like this package com.company.app.utils..
How can I get zoom functionality for images? http://stackoverflow.com/questions/2537238/how-can-i-get-zoom-functionality-for-images imageview share improve this question UPDATE I've just given TouchImageView a new update. It now includes Double Tap Zoom..
Focusable EditText inside ListView http://stackoverflow.com/questions/2679948/focusable-edittext-inside-listview would take more work to dynamically determine if any given position contains a focusable view I can change descendant focusability..
Is AsyncTask really conceptually flawed or am I just missing something? http://stackoverflow.com/questions/3357477/is-asynctask-really-conceptually-flawed-or-am-i-just-missing-something references are weak and are cleared when no instance of a given component exists anymore. Still it is a complex workaround and..
Adding a library/JAR to an Eclipse Android project http://stackoverflow.com/questions/3642928/adding-a-library-jar-to-an-eclipse-android-project . What's going on Second after fixing that the answer is given below my application doesn't work on Android and I discover..
How to get IP address of the device? http://stackoverflow.com/questions/6064510/how-to-get-ip-address-of-the-device is.close catch Exception ex Returns MAC address of the given interface name. @param interfaceName eth0 wlan0 or NULL use..
How turn on camera flash light programmatically in Android? http://stackoverflow.com/questions/6068803/how-turn-on-camera-flash-light-programmatically-in-android alot of problems. You can refer about problems in the given below list Use camera flashlight in Android Turn ON OFF Camera..
Usage CursorLoader without ContentProvider http://stackoverflow.com/questions/7182485/usage-cursorloader-without-contentprovider method allows the activity to take care of managing the given Cursor's lifecycle for you based on the activity's lifecycle... is stopped it will automatically call deactivate on the given Cursor and when it is later restarted it will call requery for..
Getting an issue while checking the dynamically generated checkbox through list view http://stackoverflow.com/questions/7738527/getting-an-issue-while-checking-the-dynamically-generated-checkbox-through-list is already asked by other members and solution is also given by some members but the thing is that i didnt find any solution.. etc and use it in phase 2 . Phase 2 Setup item state for given position You set the visual state for the item. Everything which..
Android accelerometer accuracy (Inertial navigation) http://stackoverflow.com/questions/7829097/android-accelerometer-accuracy-inertial-navigation System for an Android phone which I realise is hard given the accelerometer accuracy and constant fluctuation of readings... readings in the X and Y directions. I would expect given the calibration that these accelerations should add up to 0..
SimpleCursorTreeAdapter and CursorLoader for ExpandableListView http://stackoverflow.com/questions/10611927/simplecursortreeadapter-and-cursorloader-for-expandablelistview protected Cursor getChildrenCursor Cursor groupCursor Given the group we return a cursor for all the children within that.. protected Cursor getChildrenCursor Cursor groupCursor Given the group we return a cursor for all the children within that.. protected Cursor getChildrenCursor Cursor groupCursor Given the group we return a cursor for all the children within that..
Are there any standards for mobile device web browsers in terms of thread sleeping? http://stackoverflow.com/questions/10739835/are-there-any-standards-for-mobile-device-web-browsers-in-terms-of-thread-sleepi mobile device web browsers in terms of thread sleeping Given the following jsFiddle which is a simple incrementing counter..
When exactly is it leak safe to use (anonymous) inner classes? http://stackoverflow.com/questions/10864853/when-exactly-is-it-leak-safe-to-use-anonymous-inner-classes all at once. Activities Views and Non static Inner Classes Given the information above about Inner Classes these are the most..
How to work with an image using url in android? http://stackoverflow.com/questions/1162260/how-to-work-with-an-image-using-url-in-android to work with an image using url in android Given a Url for an image I want to downoload it and paste it onto..
How to obtain all details of a contact in Android http://stackoverflow.com/questions/2205246/how-to-obtain-all-details-of-a-contact-in-android to obtain all details of a contact in Android Given a contact id I can obtain various contact details like name..
http://stackoverflow.com/questions/2290945/writing-xml-on-android XML on Android Given an instance of org.w3c.dom.Document how do I save its contents..
Given an Android music playlist name, how can one find the songs in the playlist? http://stackoverflow.com/questions/2694909/given-an-android-music-playlist-name-how-can-one-find-the-songs-in-the-playlist an Android music playlist name how can one find the songs in..
Is it possible to display inline images from html in an Android TextView? http://stackoverflow.com/questions/2865452/is-it-possible-to-display-inline-images-from-html-in-an-android-textview to display inline images from html in an Android TextView Given the following HTML p This is text and this is an image img src..
Change the background color of the options menu http://stackoverflow.com/questions/2944244/change-the-background-color-of-the-options-menu on yet but will post any needed changes here when if I do. Given that 3.X tablets use Action Bars instead of Options Menus as..
Fast Scroll display problem with ListAdapter and SectionIndexer http://stackoverflow.com/questions/3225092/fast-scroll-display-problem-with-listadapter-and-sectionindexer int index baseAdapter.getPositionForSection section Given the expected section and index the following code will try..
pathPattern to match file extension does not work if a period exists elsewhere in the file name? http://stackoverflow.com/questions/3400072/pathpattern-to-match-file-extension-does-not-work-if-a-period-exists-elsewhere-i substring mnt my and hence will fail to match the string. Given this limitation I don't see a way to write a pathPattern that..
How is it possible to create a spinner with images instead of text? http://stackoverflow.com/questions/3609231/how-is-it-possible-to-create-a-spinner-with-images-instead-of-text possible to create a spinner with images instead of text Given the code bellow is it possible to have images instead of text..
OutOfMemory exception when loading bitmap from external storage http://stackoverflow.com/questions/4102758/outofmemory-exception-when-loading-bitmap-from-external-storage this will doubtless be for the decompressed image pixels. Given that you know the size of the image what depth is it If it's..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables contract and in my opinion weakens the Android framework. Given that Diane has not explained a single downside to using an Application..
Best way to work with dates in Android SQLite http://stackoverflow.com/questions/7363112/best-way-to-work-with-dates-in-android-sqlite should I use to store dates in SQLite text integer ... 2 Given the best way to store dates how do I store It properly using..
Android - How to change a layer-list drawable? http://stackoverflow.com/questions/8018435/android-how-to-change-a-layer-list-drawable and can't figure this one out any help is appreciated. Given this simple code which is right from Google's documentation..
Get Bitmap attached to ImageView http://stackoverflow.com/questions/8306623/get-bitmap-attached-to-imageview Bitmap attached to ImageView Given ImageView image R.findViewById R.id.imageView image.setImageBitmap..
Application Skeleton to support multiple screen http://stackoverflow.com/questions/12242111/application-skeleton-to-support-multiple-screen support your layout or drawable to S3 then the calculation says px Device's width 720 dpi Device's density 320 formula given px dp dpi 160 interchanging formula because we have px's value dp px dpi 160 now putting value dp 720 320 160 dp 360. so..
Saving Activity state in Android http://stackoverflow.com/questions/151777/saving-activity-state-in-android Android I've been playing around with the Android SDK and I am a little unclear on saving an application's state. So given this minor re tooling of the 'Hello Android' example package com.android.hello import android.app.Activity import android.os.Bundle..
http://stackoverflow.com/questions/1554099/slow-android-emulator by editing the AVD. Also I have increased the Device RAM Size to 1024 which results in very fast emulator. Refer the given below screenshots for more information. Creating a new AVD with the save snapshot feature. Launching the emulator from the..
How to check internet access on Android? InetAddress never timeouts http://stackoverflow.com/questions/1560788/how-to-check-internet-access-on-android-inetaddress-never-timeouts name android.permission.ACCESS_NETWORK_STATE One other small point if you absolutely need a network connection at the given point in time then it might be better to use netInfo.isConnected rather than netInfo.isConnectedOrConnecting . I guess this..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon but I first want to address a number of issues you raise in your various comments to the various answers already given at the time of this writing. I have no intention of changing your mind rather these are here for others who come to read..
How to send an object from one Android Activity to another using Intents? http://stackoverflow.com/questions/2139134/how-to-send-an-object-from-one-android-activity-to-another-using-intents MyParcelable Parcel in mData in.readInt Observe that in the case you have more than one field to retrieve from a given Parcel you must do this in the same order you put them in that is in a FIFO approach . Once you have your objects implement..
How to make an ImageView to have rounded corners http://stackoverflow.com/questions/2459916/how-to-make-an-imageview-to-have-rounded-corners it as a helper within an ImageHelper class and extended it just a bit to pass in the amount of feathering I need for a given image. Final code looks like this package com.company.app.utils import android.graphics.Bitmap import android.graphics.Canvas..
How can I get zoom functionality for images? http://stackoverflow.com/questions/2537238/how-can-i-get-zoom-functionality-for-images with less control over the overall layout etc. android zoom imageview share improve this question UPDATE I've just given TouchImageView a new update. It now includes Double Tap Zoom and Fling in addition to Panning and Pinch Zoom. The code below..
Focusable EditText inside ListView http://stackoverflow.com/questions/2679948/focusable-edittext-inside-listview since I know which header view I want to override the selector would take more work to dynamically determine if any given position contains a focusable view I can change descendant focusability and set focus on the EditText. And when I navigate..
Is AsyncTask really conceptually flawed or am I just missing something? http://stackoverflow.com/questions/3357477/is-asynctask-really-conceptually-flawed-or-am-i-just-missing-something meaningful UI work there. It also doesn't leak because the references are weak and are cleared when no instance of a given component exists anymore. Still it is a complex workaround and requires to sub class some of the Droid Fu library classes..
Adding a library/JAR to an Eclipse Android project http://stackoverflow.com/questions/3642928/adding-a-library-jar-to-an-eclipse-android-project use a class from that JAR and need the prefix somehow defined . What's going on Second after fixing that the answer is given below my application doesn't work on Android and I discover via the debugger LogCat that the class I'm attempting to consume..
How to get IP address of the device? http://stackoverflow.com/questions/6064510/how-to-get-ip-address-of-the-device UTF 8 new String baos.toByteArray finally try is.close catch Exception ex Returns MAC address of the given interface name. @param interfaceName eth0 wlan0 or NULL use first interface @return mac address or empty string public static..
How turn on camera flash light programmatically in Android? http://stackoverflow.com/questions/6068803/how-turn-on-camera-flash-light-programmatically-in-android then flashlight doesnot turn ON etc. Typically Samsung creates alot of problems. You can refer about problems in the given below list Use camera flashlight in Android Turn ON OFF Camera LED flash light in Samsung Galaxy Ace 2.2.1 Galaxy Tab share..
Usage CursorLoader without ContentProvider http://stackoverflow.com/questions/7182485/usage-cursorloader-without-contentprovider platforms through the Android compatibility package. This method allows the activity to take care of managing the given Cursor's lifecycle for you based on the activity's lifecycle. That is when the activity is stopped it will automatically.. based on the activity's lifecycle. That is when the activity is stopped it will automatically call deactivate on the given Cursor and when it is later restarted it will call requery for you. When the activity is destroyed all managed Cursors will..
Getting an issue while checking the dynamically generated checkbox through list view http://stackoverflow.com/questions/7738527/getting-an-issue-while-checking-the-dynamically-generated-checkbox-through-list generated checkbox through list view I know that this question is already asked by other members and solution is also given by some members but the thing is that i didnt find any solution which is suitable for my app. I am creating a app in which.. persist this data in an data array in a SQLite database etc and use it in phase 2 . Phase 2 Setup item state for given position You set the visual state for the item. Everything which might change individually for an item text checkbox state..
Android accelerometer accuracy (Inertial navigation) http://stackoverflow.com/questions/7829097/android-accelerometer-accuracy-inertial-navigation navigation I was looking into implementing an Inertial Navigation System for an Android phone which I realise is hard given the accelerometer accuracy and constant fluctuation of readings. To start with I set the phone on a flat surface and sampled.. by again placing it on the table and sampling 5000 accelerometer readings in the X and Y directions. I would expect given the calibration that these accelerations should add up to 0 roughly in each direction. However this is not the case and..
SimpleCursorTreeAdapter and CursorLoader for ExpandableListView http://stackoverflow.com/questions/10611927/simplecursortreeadapter-and-cursorloader-for-expandablelistview mActivity ContactManager context mFragment glf @Override protected Cursor getChildrenCursor Cursor groupCursor Given the group we return a cursor for all the children within that group int groupId groupCursor.getInt groupCursor .getColumnIndex.. only when loader is not null and loader isReset is false. protected Cursor getChildrenCursor Cursor groupCursor Given the group we return a cursor for all the children within that group int groupPos groupCursor.getPosition Log.d DEBUG_TAG.. mFragment glf mGroupMap new HashMap Integer Integer @Override protected Cursor getChildrenCursor Cursor groupCursor Given the group we return a cursor for all the children within that group int groupPos groupCursor.getPosition int groupId groupCursor.getInt..
Are there any standards for mobile device web browsers in terms of thread sleeping? http://stackoverflow.com/questions/10739835/are-there-any-standards-for-mobile-device-web-browsers-in-terms-of-thread-sleepi there any standards for mobile device web browsers in terms of thread sleeping Given the following jsFiddle which is a simple incrementing counter http jsfiddle.net C93ms 6 ....if I visit the url above using..
When exactly is it leak safe to use (anonymous) inner classes? http://stackoverflow.com/questions/10864853/when-exactly-is-it-leak-safe-to-use-anonymous-inner-classes such a huge deal. It can be a ton of memory being leaked all at once. Activities Views and Non static Inner Classes Given the information above about Inner Classes these are the most common memory leaks but also the most commonly avoided. While..
How to work with an image using url in android? http://stackoverflow.com/questions/1162260/how-to-work-with-an-image-using-url-in-android to work with an image using url in android Given a Url for an image I want to downoload it and paste it onto my canvas in android. How do I retrieve the image into my app..
How to obtain all details of a contact in Android http://stackoverflow.com/questions/2205246/how-to-obtain-all-details-of-a-contact-in-android to obtain all details of a contact in Android Given a contact id I can obtain various contact details like name phone email id etc by making different queries for a each of..
http://stackoverflow.com/questions/2290945/writing-xml-on-android XML on Android Given an instance of org.w3c.dom.Document how do I save its contents to a file stream EDIT As CommonsWare pointed out there's..
Given an Android music playlist name, how can one find the songs in the playlist? http://stackoverflow.com/questions/2694909/given-an-android-music-playlist-name-how-can-one-find-the-songs-in-the-playlist an Android music playlist name how can one find the songs in the playlist The playlist names can be found by a query on..
Is it possible to display inline images from html in an Android TextView? http://stackoverflow.com/questions/2865452/is-it-possible-to-display-inline-images-from-html-in-an-android-textview it possible to display inline images from html in an Android TextView Given the following HTML p This is text and this is an image img src http www.example.com image.jpg . p Is it possible to make..
Change the background color of the options menu http://stackoverflow.com/questions/2944244/change-the-background-color-of-the-options-menu 2.3 2 real devices . I don't have any 3.X tablets to test on yet but will post any needed changes here when if I do. Given that 3.X tablets use Action Bars instead of Options Menus as explained here http developer.android.com guide topics ui menus.html#options..
Fast Scroll display problem with ListAdapter and SectionIndexer http://stackoverflow.com/questions/3225092/fast-scroll-display-problem-with-listadapter-and-sectionindexer final SectionIndexer baseAdapter SectionIndexer mListAdapter int index baseAdapter.getPositionForSection section Given the expected section and index the following code will try to account for missing sections no names starting with.. It..
pathPattern to match file extension does not work if a period exists elsewhere in the file name? http://stackoverflow.com/questions/3400072/pathpattern-to-match-file-extension-does-not-work-if-a-period-exists-elsewhere-i . .mytype The . in the pathPattern will match the substring mnt my and hence will fail to match the string. Given this limitation I don't see a way to write a pathPattern that can match any string that ends in .mytype . The best you can..
How is it possible to create a spinner with images instead of text? http://stackoverflow.com/questions/3609231/how-is-it-possible-to-create-a-spinner-with-images-instead-of-text is it possible to create a spinner with images instead of text Given the code bellow is it possible to have images instead of text in the array planets Spinner s Spinner findViewById R.id.spinner..
OutOfMemory exception when loading bitmap from external storage http://stackoverflow.com/questions/4102758/outofmemory-exception-when-loading-bitmap-from-external-storage SD card. 800KB is a serious allocation in anybody's book... this will doubtless be for the decompressed image pixels. Given that you know the size of the image what depth is it If it's 32bpp then try overriding that using inPreferredConfig . share..
Android: How to declare global variables? http://stackoverflow.com/questions/708012/android-how-to-declare-global-variables using Singletons is implicitly moving away from a strong API contract and in my opinion weakens the Android framework. Given that Diane has not explained a single downside to using an Application subclass and has not proven that using a Singleton..
Best way to work with dates in Android SQLite http://stackoverflow.com/questions/7363112/best-way-to-work-with-dates-in-android-sqlite that uses SQLite. I have a couple questions 1 What type should I use to store dates in SQLite text integer ... 2 Given the best way to store dates how do I store It properly using ContentValues 3 What's the best way to retrieve the date from..
Android - How to change a layer-list drawable? http://stackoverflow.com/questions/8018435/android-how-to-change-a-layer-list-drawable change a layer list drawable Trying to learn some new things and can't figure this one out any help is appreciated. Given this simple code which is right from Google's documentation layers.xml xml version 1.0 encoding utf 8 layer list xmlns android..
Get Bitmap attached to ImageView http://stackoverflow.com/questions/8306623/get-bitmap-attached-to-imageview Bitmap attached to ImageView Given ImageView image R.findViewById R.id.imageView image.setImageBitmap someBitmap Is it possible to retrieve the bitmap android..
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