2014/10/16 上午 08:12:52
android Programming Glossary: e.gHow to disable orientation change in Android? http://stackoverflow.com/questions/1512045/how-to-disable-orientation-change-in-android However your application can be interrupted at any time e.g. by a phone call so you really should add code to save the state..
Android: Override back button to act like home button http://stackoverflow.com/questions/2000102/android-override-back-button-to-act-like-home-button Activity to finish normally and be able to recreate itself e.g. reading the current state from a Service if needed. But moveTaskToBack..
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon updates on start or check updates totally asynchronously e.g. via a scheduled task never on exit. Some comments suggest that.. not catch on much outside of language extensions to apps e.g. VBA in Excel LISP in AutoCAD . Developers who came up with.. reported with Android you will find in Web apps as well e.g. no termination . Or conversely someday if you do port your..
how to connect android emulator to the internet http://stackoverflow.com/questions/2039964/how-to-connect-android-emulator-to-the-internet How can I connect my android emulator to the internet e.g. to use the browser I've found lots of advice on what do to..
Changing Locale within the app itself http://stackoverflow.com/questions/2264874/changing-locale-within-the-app-itself correct. It works but only until any configuration change e.g. screen rotation and only in that particular Activity. Playing.. R.string.pref_locale if .equals lang config.locale.getLanguage .equals lang locale new Locale lang Locale.setDefault..
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 which triggered the task This can happen all the time e.g. because you flipped the screen. If the task would hold a reference.. have to re start any tasks when re creating the context e.g. after a screen orientation change. This is slow and wasteful...
How to develop a soft keyboard for Android? http://stackoverflow.com/questions/3480715/how-to-develop-a-soft-keyboard-for-android I have Can I open other windows screens from a key press e.g. to display a custom input interface different to a normal QWERTY..
How to add calendar events in Android? http://stackoverflow.com/questions/3721963/how-to-add-calendar-events-in-android Windows calendar apps. There are some common data formats e.g. iCalendar and Internet protocols e.g. CalDAV but no common.. common data formats e.g. iCalendar and Internet protocols e.g. CalDAV but no common API. Some calendar apps don't even offer..
Background task, progress dialog, orientation change - is there any 100% working solution? http://stackoverflow.com/questions/3821423/background-task-progress-dialog-orientation-change-is-there-any-100-working on regardless of what the user does in terms of activities e.g. downloading a large file . You can use an ordered broadcast..
How to set HttpResponse timeout for Android in Java http://stackoverflow.com/questions/693997/how-to-set-httpresponse-timeout-for-android-in-java method if response null String result getResponse response.getEntity ... When I shut down the server for testing the execution.. you want to set the Parameters of any existing HTTPClient e.g. DefaultHttpClient or AndroidHttpClient you can use the function..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context Java experience is limited. They implement an inner class e.g. an OnClickListener for a Button in an Activity and need a Context..
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 more list items which completely differs from each other e.g. a common list item and a separator which contains a title only.. didn't understand the process I explained before. So e.g. you have 1000 items and you do the view type hack then you're..
Using Application context everywhere? http://stackoverflow.com/questions/987072/using-application-context-everywhere Context getContext return instance and pass it everywhere e.g. SQLiteOpenHelper where context is required and not leaking..
Getting Data from Android Play Store http://stackoverflow.com/questions/10272155/getting-data-from-android-play-store and Websites who use Data from the Android Play store. E.g. Apps or Sites with a top Apps ranking etc. But how can you..
How to send parameters from a notification-click to an activity? http://stackoverflow.com/questions/1198558/how-to-send-parameters-from-a-notification-click-to-an-activity to open my main activity with some special parameters. E.g an item id so my activity can load and present a special item..
Is there a way to implement rounded corners to a Mapfragment? http://stackoverflow.com/questions/14469208/is-there-a-way-to-implement-rounded-corners-to-a-mapfragment
Is it possible to have multiple styles inside a TextView? http://stackoverflow.com/questions/1529068/is-it-possible-to-have-multiple-styles-inside-a-textview possible to have a different style for each text element E.g. line1 bold word1 italic etc. The developer guide's Common Tasks..
Android 4.3 Bluetooth Low Energy unstable http://stackoverflow.com/questions/17870189/android-4-3-bluetooth-low-energy-unstable that indicate the begin of BLE stack becoming unstable. E.g. if startScan returns false. A good point may also be if serviceDiscovery..
Using static variables in Android http://stackoverflow.com/questions/2475978/using-static-variables-in-android android are using static variables a recommended practice E.g implementing a Singleton pattern in Java I usually do private..
How to write a custom filter for ListView with ArrayAdapter http://stackoverflow.com/questions/2519317/how-to-write-a-custom-filter-for-listview-with-arrayadapter that you see regarding changing the text in the filter. E.g. you search for 'Bread' then backspace to just a 'B' and you..
How to adjust text font size to fit textview http://stackoverflow.com/questions/2617266/how-to-adjust-text-font-size-to-fit-textview the textsize in a textview to fit the space it occupies E.g. I'm using a TableLayout and adding several textviews to each..
What exactly is a Context in Java? [duplicate] http://stackoverflow.com/questions/3918083/what-exactly-is-a-context-in-java influence on the behaviour of the current unit of work. E.g. the running environment used the environment variables instance..
What does android:layout_weight mean? http://stackoverflow.com/questions/3995825/what-does-androidlayout-weight-mean you can specify a size ratio between multiple views. E.g. you have a MapView and a table which should show some additional..
Alternatives to google maps api http://stackoverflow.com/questions/4151593/alternatives-to-google-maps-api the use of it is restricted for me in a special project. E.g. if your project is in conflict with the general terms and conditions..
How to display list of images in ListView in Android? http://stackoverflow.com/questions/459729/how-to-display-list-of-images-in-listview-in-android position .click this.getApplicationContext E.g. extending ArrayAdapter with own type of Items holding information..
How to simulate :active css pseudo class in android on non-link elements? http://stackoverflow.com/questions/4940429/how-to-simulate-active-css-pseudo-class-in-android-on-non-link-elements The fix for this is to also handle the touchcancel event. E.g. add this to the above.. .bind touchcancel function var this..
Making sense of LayoutInflater http://stackoverflow.com/questions/5026926/making-sense-of-layoutinflater LayoutInflater ignore the layout parameters I've specified E.g. why are the layout_width and layout_height values from my resources..
Android : How to update the selector(StateListDrawable) programmatically http://stackoverflow.com/questions/5092649/android-how-to-update-the-selectorstatelistdrawable-programmatically You need to use the negative value of the needed state. E.g. states.addState new int android.R.attr.state_enabled R.drawable.btn_disabled..
Horizontal scrolling grid view http://stackoverflow.com/questions/5725745/horizontal-scrolling-grid-view vertical LinearLayout s instead of directly the images. E.g. adding three to four images per vertical LinearLayout in portrait..
Fit image into ImageView, keep aspect ratio and then resize ImageView to image dimensions? http://stackoverflow.com/questions/8232608/fit-image-into-imageview-keep-aspect-ratio-and-then-resize-imageview-to-image-d should match scaled image's dimensions after scaling E.g. for an image of 100 150 the image and the ImageView should.. of 100 150 the image and the ImageView should be 166 250. E.g. for an image of 150 100 the image and the ImageView should..
How to restrict android app to specific device make? http://stackoverflow.com/questions/9510649/how-to-restrict-android-app-to-specific-device-make to. You can search by manufacturer the design name E.g. 憕assion or the actual public device name E.g. Nexus One to.. design name E.g. 憕assion or the actual public device name E.g. Nexus One to see if your manifest settings filtered a device...
How to disable orientation change in Android? http://stackoverflow.com/questions/1512045/how-to-disable-orientation-change-in-android reference android R.attr.html#configChanges for more details. However your application can be interrupted at any time e.g. by a phone call so you really should add code to save the state of your application when it is paused. Update As of Android..
Android: Override back button to act like home button http://stackoverflow.com/questions/2000102/android-override-back-button-to-act-like-home-button keyCode event I think the preferred option should be for an Activity to finish normally and be able to recreate itself e.g. reading the current state from a Service if needed. But moveTaskToBack can be used as a quick alternative on occasion...
Quitting an application - is that frowned upon? http://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon mid stream. Generally that's not a good thing. Either check updates on start or check updates totally asynchronously e.g. via a scheduled task never on exit. Some comments suggest that hitting the back button does not kill the app at all see.. development tools co mingled in one setup. This concept did not catch on much outside of language extensions to apps e.g. VBA in Excel LISP in AutoCAD . Developers who came up with mental models that presumed the existence of development tools.. to the Web since some of the same problems you have reported with Android you will find in Web apps as well e.g. no termination . Or conversely someday if you do port your app to the Web you may find that the Web app's flow may be a..
how to connect android emulator to the internet http://stackoverflow.com/questions/2039964/how-to-connect-android-emulator-to-the-internet to connect android emulator to the internet How can I connect my android emulator to the internet e.g. to use the browser I've found lots of advice on what do to when your connected through a proxy but that's not the case..
Changing Locale within the app itself http://stackoverflow.com/questions/2264874/changing-locale-within-the-app-itself switching code and found out that the method is not exactly correct. It works but only until any configuration change e.g. screen rotation and only in that particular Activity. Playing with a code for a while I have ended up with the following.. .getConfiguration String lang settings.getString getString R.string.pref_locale if .equals lang config.locale.getLanguage .equals lang locale new Locale lang Locale.setDefault locale config.locale locale getBaseContext .getResources..
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 . The reason is obvious what if the activity gets destroyed which triggered the task This can happen all the time e.g. because you flipped the screen. If the task would hold a reference to the context that created it you're not only holding.. you have no record of the tasks it fired. That means that you have to re start any tasks when re creating the context e.g. after a screen orientation change. This is slow and wasteful. My solution to this as implemented in the Droid Fu library..
How to develop a soft keyboard for Android? http://stackoverflow.com/questions/3480715/how-to-develop-a-soft-keyboard-for-android to synchronize keyboard data with a cloud DB and other phones I have Can I open other windows screens from a key press e.g. to display a custom input interface different to a normal QWERTY one. If that doesn't work can I use a pop up dialog instead..
How to add calendar events in Android? http://stackoverflow.com/questions/3721963/how-to-add-calendar-events-in-android No no more than there is a common API they all share for Windows calendar apps. There are some common data formats e.g. iCalendar and Internet protocols e.g. CalDAV but no common API. Some calendar apps don't even offer an API. If there are.. API they all share for Windows calendar apps. There are some common data formats e.g. iCalendar and Internet protocols e.g. CalDAV but no common API. Some calendar apps don't even offer an API. If there are specific calendar applications you wish..
Background task, progress dialog, orientation change - is there any 100% working solution? http://stackoverflow.com/questions/3821423/background-task-progress-dialog-orientation-change-is-there-any-100-working useful if the work to be done may be long and should go on regardless of what the user does in terms of activities e.g. downloading a large file . You can use an ordered broadcast Intent to either have the activity respond to the work being..
How to set HttpResponse timeout for Android in Java http://stackoverflow.com/questions/693997/how-to-set-httpresponse-timeout-for-android-in-java HttpGet new URI url HttpResponse response httpClient.execute method if response null String result getResponse response.getEntity ... When I shut down the server for testing the execution waits a long time at line HttpResponse response httpClient.execute.. HttpResponse response httpClient.execute httpGet If you want to set the Parameters of any existing HTTPClient e.g. DefaultHttpClient or AndroidHttpClient you can use the function setParams . httpClient.setParams httpParameters share..
When to call activity context OR application context? http://stackoverflow.com/questions/7298731/when-to-call-activity-context-or-application-context or getBaseContext to a lesser extent because their Java experience is limited. They implement an inner class e.g. an OnClickListener for a Button in an Activity and need a Context . Rather than using MyActivity.this to get at the outer..
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 or this answer . These two methods are there for using two or more list items which completely differs from each other e.g. a common list item and a separator which contains a title only and not to avoid recycling of a view which could be reused... If you're using them anyway to solve your problem you probably didn't understand the process I explained before. So e.g. you have 1000 items and you do the view type hack then you're creating 1000 views hierarchies instead probably 10 which..
Using Application context everywhere? http://stackoverflow.com/questions/987072/using-application-context-everywhere MyApp instance public MyApp instance this public static Context getContext return instance and pass it everywhere e.g. SQLiteOpenHelper where context is required and not leaking of course android android context share improve this question..
Getting Data from Android Play Store http://stackoverflow.com/questions/10272155/getting-data-from-android-play-store Data from Android Play Store I have seen some Apps and Websites who use Data from the Android Play store. E.g. Apps or Sites with a top Apps ranking etc. But how can you get the Data From where I can parse it android google play..
How to send parameters from a notification-click to an activity? http://stackoverflow.com/questions/1198558/how-to-send-parameters-from-a-notification-click-to-an-activity a notification. When the user clicks on the notification i want to open my main activity with some special parameters. E.g an item id so my activity can load and present a special item detail view. More spesific im downloading a file and when..
Is there a way to implement rounded corners to a Mapfragment? http://stackoverflow.com/questions/14469208/is-there-a-way-to-implement-rounded-corners-to-a-mapfragment
Is it possible to have multiple styles inside a TextView? http://stackoverflow.com/questions/1529068/is-it-possible-to-have-multiple-styles-inside-a-textview tv.setText line1 n line2 n word1 t word2 t word3 Is it possible to have a different style for each text element E.g. line1 bold word1 italic etc. The developer guide's Common Tasks and How to Do Them in Android includes Selecting Highlighting..
Android 4.3 Bluetooth Low Energy unstable http://stackoverflow.com/questions/17870189/android-4-3-bluetooth-low-energy-unstable If that setting is enabled I restart Bluetooth at some points that indicate the begin of BLE stack becoming unstable. E.g. if startScan returns false. A good point may also be if serviceDiscovery failes. I just turn Bluetooth off and on. I provide..
Using static variables in Android http://stackoverflow.com/questions/2475978/using-static-variables-in-android static variables in Android In android are using static variables a recommended practice E.g implementing a Singleton pattern in Java I usually do private static A the_instance public static A getInstance if the_instance..
How to write a custom filter for ListView with ArrayAdapter http://stackoverflow.com/questions/2519317/how-to-write-a-custom-filter-for-listview-with-arrayadapter new filtered one in performFiltering. This will fix any issues that you see regarding changing the text in the filter. E.g. you search for 'Bread' then backspace to just a 'B' and you should see all 'B's. In my original post you would not have...
How to adjust text font size to fit textview http://stackoverflow.com/questions/2617266/how-to-adjust-text-font-size-to-fit-textview size to fit textview Is there any way in android to adjust the textsize in a textview to fit the space it occupies E.g. I'm using a TableLayout and adding several textviews to each row. Since I don't want the textviews to wrap the text I rather..
What exactly is a Context in Java? [duplicate] http://stackoverflow.com/questions/3918083/what-exactly-is-a-context-in-java terms it's the larger surrounding part which can have any influence on the behaviour of the current unit of work. E.g. the running environment used the environment variables instance variables local variables state of other classes state..
What does android:layout_weight mean? http://stackoverflow.com/questions/3995825/what-does-androidlayout-weight-mean android widget share improve this question With layout_weight you can specify a size ratio between multiple views. E.g. you have a MapView and a table which should show some additional information to the map. The map should use 3 4 of the..
Alternatives to google maps api http://stackoverflow.com/questions/4151593/alternatives-to-google-maps-api based services for mobile phones. But for some reason the use of it is restricted for me in a special project. E.g. if your project is in conflict with the general terms and conditions of google it is not recommended to use google maps..
How to display list of images in ListView in Android? http://stackoverflow.com/questions/459729/how-to-display-list-of-images-in-listview-in-android onListItemClick ListView l View v int position long id this.adapter.getItem position .click this.getApplicationContext E.g. extending ArrayAdapter with own type of Items holding information about your pictures and overriden getView method that..
How to simulate :active css pseudo class in android on non-link elements? http://stackoverflow.com/questions/4940429/how-to-simulate-active-css-pseudo-class-in-android-on-non-link-elements buttons can occasionally 'stick' in the fake active state. The fix for this is to also handle the touchcancel event. E.g. add this to the above.. .bind touchcancel function var this this this.removeClass fake active share improve this answer..
Making sense of LayoutInflater http://stackoverflow.com/questions/5026926/making-sense-of-layoutinflater add views at runtime . The recurring question is why does LayoutInflater ignore the layout parameters I've specified E.g. why are the layout_width and layout_height values from my resources XML not honored android android layout share improve..
Android : How to update the selector(StateListDrawable) programmatically http://stackoverflow.com/questions/5092649/android-how-to-update-the-selectorstatelistdrawable-programmatically advance. android button state share improve this question You need to use the negative value of the needed state. E.g. states.addState new int android.R.attr.state_enabled R.drawable.btn_disabled Notice the sign before android.R.attr.state_enabled..
Horizontal scrolling grid view http://stackoverflow.com/questions/5725745/horizontal-scrolling-grid-view with your approach with an horizontal LinearLayout but adding vertical LinearLayout s instead of directly the images. E.g. adding three to four images per vertical LinearLayout in portrait and redrawing to add only two in landscape. I would try..
Fit image into ImageView, keep aspect ratio and then resize ImageView to image dimensions? http://stackoverflow.com/questions/8232608/fit-image-into-imageview-keep-aspect-ratio-and-then-resize-imageview-to-image-d The image should keep its aspect ratio The ImageView dimensions should match scaled image's dimensions after scaling E.g. for an image of 100 150 the image and the ImageView should be 166 250. E.g. for an image of 150 100 the image and the ImageView.. scaled image's dimensions after scaling E.g. for an image of 100 150 the image and the ImageView should be 166 250. E.g. for an image of 150 100 the image and the ImageView should be 250 166. If I set the bounds as ImageView android id @ id..
How to restrict android app to specific device make? http://stackoverflow.com/questions/9510649/how-to-restrict-android-app-to-specific-device-make to see the devices that your application will not be available to. You can search by manufacturer the design name E.g. 憕assion or the actual public device name E.g. Nexus One to see if your manifest settings filtered a device. Filter problematic.. will not be available to. You can search by manufacturer the design name E.g. 憕assion or the actual public device name E.g. Nexus One to see if your manifest settings filtered a device. Filter problematic or non compatible devices This feature..
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