android-context

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How to retrieve a context from a non-activity class?

I have found one answer that appears to say I should create a separate class and make a static MyApplication object and make a get method. Then any class can call MyApplication.get() to retrieve the c[详细]

2023-03-23 21:28 分类：问答
NullPointerException on getWritableDatabase after adding Fragments to my project

I had a working project, now I wanted to upgrade the layout and I\'m trying to add Fragments (pre honeycomb), but now seems like I\'m having some troubles connecting to my DB, and I\'m getting NullPoi[详细]

2023-03-23 05:06 分类：问答
Android Java Context Binding like Javascript

In Java on Android when we code using this style public void OnCreate开发者_高级运维(Bundle savedInstantState) {[详细]

2023-03-22 11:54 分类：问答
setting an onClickListener statically, memory leak?

I am thinking of making a reusable function to make views clickable to dismiss - in this example RelativeLayoutAO is the background.[详细]

2023-03-21 10:51 分类：问答
Set a custom context in AndroidTestCase

I\'m trying to test my custom ContentProvider which only updates an item at a certain point in time. In order to test the shouldUpdate branch, I need to revert time and set a custom date in my applic[详细]

2023-03-21 04:27 分类：问答
How to change a TabActivity's view from a child activity

I have a TabActivity with 4 tabs.When a user clicks on the 4th tab, a ListView Activity is displayed.Then when a user clicks on one of the items in the list, yet another Activity is launched that play[详细]

2023-03-20 23:59 分类：问答
Cant create file - NullPointer Exception in ContextWrapper.getDir()

I have been trying for a while now to figure out how to save data on the Android device or even an SD card to be read by the app. So far no luck. I used the Android SAX Parser to read xml from a serve[详细]

2023-03-20 14:10 分类：问答
What exactly is context in Android and why is it needed?

I am new to Android development and Software development too. I keep seein开发者_如何学运维g this term called - \'context\' in Android code.[详细]

2023-03-20 08:58 分类：问答
Get application context to display graphical components

开发者_开发百科I\'ve been wondering how to do this correctly for a while. I want to display a Dialog or Toast (or anything graphic) from another place than my main thread.[详细]

2023-03-20 08:02 分类：问答
Can anyone explain the difference between passing the activity context to an inner class and just referencing it with MyActivity.this?

And which way is better? Let me k开发者_如何学Gonow if the question needs clarification.For reusing passing the context is easier as you then can simply copy it to another project. Otherwise you have[详细]

2023-03-20 06:10 分类：问答