大约有 318 项符合查询结果（耗时：0.0334秒） [XML]
How to save an activity state using save instance state?
...important than the data state, like records added to a list displayed in a ListView. The latter must be stored to the database in onPause because it's the only guarantied call. If you put it in onSaveInstanceState instead, you risk loosing data if that is not called. But if the radio-button selectio...
When exactly are onSaveInstanceState() and onRestoreInstanceState() called?
...f we try to access a view (to get some value to save, like an index from a listview) we might run into NullPointerExceptions?
– Tiago
Feb 23 '15 at 21:56
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Android: AsyncTask vs Service
...n what is your requirement is.
as a example if you want to load data to a listview from a server after hitting some button or changing screen you better go with a asynctask.it runs parallel with main ui thread (runs in background).for run asynctack activity or your app should on main UI thread.afte...
How to check if an object is a certain type
... using a different object each time. For example, in one case I am using a ListView and in another case I am passing a DropDownList.
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What is the benefit of using Fragments in Android, rather than Views?
...ver CustomView:
When you are using CursorLoader to observe certain views, ListView or TextView and want to update their display value whenever your ContentProvider's data updates at back end(most common case you have a service which updates your local database by polling data from remote database/c...
Strange out of memory issue while loading an image to a Bitmap object
...ge off the SD card) the application returns from the activity back to the listview activity to the result handler to relaunch my new activity which is nothing more than an image widget.
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Phase • Animations made easy! - Extensions - Kodular Community
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Custom Search Bar with Simple & Dynamic Listview | Guide
Custom Bottom Navigation
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Understanding Canvas and Surface concepts
...bclasses and View itself, has its own Surface to draw in.
Yes. Just like ListView is a subclass of View that has its own List data structure. Each subclass of View does something different.
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What is the purpose of Android's tag in XML layouts?
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Another reason to use merge is when using custom viewgroups in ListViews or GridViews. Instead of using the viewHolder pattern in a list adapter, you can use a custom view. The custom view would inflate an xml whose root is a merge tag.
Code for adapter:
public class GridViewAdapter e...
Referencing a string in a string array resource with xml
...ing up 17 checks for preferences, and the subsequent code to add it to the listview just seems redundant and sloppy to me.
– Jorsher
Nov 12 '10 at 4:22
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