Is there someone could tell me how to get the KeguardScreenCallback object in my own Activity(For Example,the class of LockScreen,it has a parameter called "callback" in it's constructor,I want to get the "callback" in my activtity).so I can call the goToUnlcokScreen method to remove the screen lock.Or there maybe other way to do this?(I know KeyguardManager,so except this way first.
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I want to do some automated testcase with Instrumentation . Suggest that my AUT has 2 Activity. After clicking the button in ther first Activity, the second one will be shown with new content base on what we enter in the first Activity.) Instrumentation provides us the function called startActivitySync() and return the Activity object for processing. My question is how we can get the pointer of the second Activity after the it is shown by clicking the button on the first activity.?
View 2 Replies View RelatedI have an Activity that running on system. I can get the Intent that is used to start the activity. But i don't know how to get the Activity object from the Intent object or something else. Can anyone tell me how to do this??? Note that, I don't use Instrumentation object.
View 11 Replies View RelatedWhen start the activity i will set the activity object to the Application, and i will registry it in the Appication app = MyApplication.getApplication(this);
1. Start Activity A store A id 0x12345678
2. Activity A -> Activity B
3. Store B id 0x87654321
4. Finish B activity
5. but the Activity B object not null in the Application
I have an activity which implements an OnItemClickListener.code...
However, I need to pass some objects from MyActivity1 to MyActivity2 --
I see there is an Intent.putExtra() for all the basic types, and I even see a Bundle which is a collection of basic types, but how can I pass a generic "Object" to MyActivity2 ?
There is an activity which has an object. This activity(say A) starts another activity(say B). Can B use some object in A?
View 7 Replies View RelatedThis is a followup to this post: http://stackoverflow.com/questions/3897176/findviewbyid-in-a-subclassed-surfaceview-throwing-runtimeexception Based on Romain Guy's feedback (which I'll accept shortly as it is a solution), I'd like to obtain the calling Activity from within the View, so that I can use it to obtain the desired Text View resource. I don't see any methods in View that return Activity. What is the proper way to do this? Or is there a better alternative for working with TextViews from within another View context. Basically, I am calling setContentView(R.layout.xxx) in onCreate() (as usual), so I don't really have a way to pass in references to additional TextViews unless I awkwardly retrieve the View after setContentView and then make calls on it.
View 1 Replies View RelatedIn my activity , I create a Bitmap object, and I need to launch another activity,
How can I pass this Bitmap object from the sub-activity (the one which is going to be launched)?
I have read posts on passing arrays from and to activities, but I am confused as to how I would do it for my specific case.
I have an array of objects called DaysWeather (a DaysWeather[] array) where the objects have several String attributes as well as a bitmap attribute. I read somewhere that you have to make it serializable or parceable or something, but it seems messy at first glance.
Could someone lead me in the right direction?
Is there a simple way to do this?
I am developing an app that connects to a server. For that connection I created a class Client that maintains info about the connection . My app consists of several Activities and each of that Activity needs access to the Client object to communicate to the server. 1) Can I put somewhere the Client object so that all Acitvities have an access to it? 2) If not I would probably need to pass the object to each Activity via Intent.putExtra(). But putExtra doesn't accept Object as an argument. It only accepts several types like int, long, String etc. So how can I pass an object to another Activity?
View 2 Replies View RelatedI am following the Parcelable example in the Android developer guide with the intention of having a more complex object that I send to different activities. Right now, my class is a wrapper of a String member. If I put the object in the intent and read it back from the Intent it reads as expected, however, on the receiver side, it is always null-pointer.
View 1 Replies View RelatedI created a thread in my activity, and that thread will print out the value of my instance variables in my activity after running for about 10 seconds. I pressed the back key to destroy my activity before the thread prints out the values, and when the thread reaches that line of code, it can still print out the values correctly. That means even though the activity is finished, the java object of the activity is still there. Will the object always be there? Or it is just waiting to be GCed? Or it will be killed only when Android needs memory?
View 2 Replies View RelatedI have a custom view that draws to a canvas. I am trying to invoke changes to the canvas when the user pushes a button from the activity that this view is tied to. Currently, I am attempting to do this by calling a public method, called setNewDrawable, that I created inside the view.
The debugger is giving me different values for the view ID depending on whether I'm inside setNewDrawable or inside the Overridden onDraw method when I post an Invalidate.
For example the debugger variables show: (This - MyView id=830067720176) or (This - MyView id=830067712344) in setNewDrawable and onDraw respectively. This makes me think I basically have two copies of the object and I am essentially interacting with the wrong one.
How can I get information to my custom View in order to determine what it draws?
Here is the code I am running...
I want to show messageBox or notification when connection lost in Static DB class but i cant use getApplicationContext() because its a static class and i tried to call other class called notification but i have error so how i could pass activity object to my new class .
View 3 Replies View RelatedI have an API Object that I made, and I would like to share it between a running Service and various Activities in my app, almost like if I was to make the class static. How could I go about sharing the created object between the two?
View 2 Replies View RelatedI have a function that needs a Surface object to work. I'd like to be able to call that function from a background Service without starting a foreground Activity. Every Surface source in the API that I can see, though, requires a View that's laid out before the Surface becomes available. Are there other ways to create a Surface that I am missing, and can you point me to them?
View 5 Replies View RelatedIn my program I have a custom view object. Inside the view class is a method called foo. For some reason when I call foo from my activity, it doesn't fire. Here is the code:
XML of the custom view:
<com.company.application.MyView android:id="@+id/my_view" android:layout_width="wrap_content" android:layout_height="wrap_content" />
The activity code:
public class Main extends Activity { MyView mView;
/** Called when the activity is first created. */
@Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); setContentView(R.layout.main);
LayoutInflater li = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = li.inflate(R.layout.main, null); mView= (MyView) v.findViewById(R.id.my_view);
//A button to fire the method inside foo() Button switchLeft = (Button) findViewById(R.id.switch_left); switchLeft.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { callTest(); } } );
} public void callTest() { Log.w(this.getClass().getName(), "clicked left arrow");
mView.foo(); mView.postInvalidate();
} }
Finally here is foo:
public void foo() { mBackground = mContext.getResources().getDrawable(R.drawable.temp_canvas); Log.w(this.getClass().getName(), "background set");
}
The first log is always written when the button is pressed, but the second log is not because foo never fires. What is the deal here? Upon request, the full view
public class MyView extends View { Drawable mBackground; Context mContext;
public MyView (Context context) { super(context); mContext = context;
mBackground = mContext.getResources().getDrawable(R.drawable.leftarrow1);
} public MyView (Context context, AttributeSet attrs) {
super(context, attrs); mContext = context;
mBackground = mContext.getResources().getDrawable(R.drawable.leftarrow1);
} public void foo() { mBackground = mContext.getResources().getDrawable(R.drawable.temp_canvas);
Log.w(this.getClass().getName(), "background set"); }
@Override public void onDraw(Canvas canvas) { Paint paint = new Paint();
paint.setStyle(Paint.Style.FILL); // draw a solid blue circle
paint.setColor(Color.BLUE); canvas.drawCircle(20, 20, 15, paint);
// draw a test background mBackground.setBounds(0, 0, 300, 400);
mBackground.draw(canvas); }
}
Can anyone guide me as to how I can pass an object of a custom type from one Activity to another with the putExtra() method of Intent?
View 5 Replies View RelatedI define a class Rect and a aidl file as below. code...
View 2 Replies View RelatedI want to get the hashtable object from non activity class to activity class an android..
View 1 Replies View RelatedI would like to convert a Picture object to Bitmap object in memory, without writing data to disk.
View 2 Replies View RelatedI am trying to get a FileInputStream object on an image that the user selects from the picture gallery.
This is the android URI returned by android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI content://media/external/images/media/3
When I try to construct a java URI object from this object, I get an IllegalArgumentException with the exception description Expected file scheme in URI: content://media/external/images/media/3 whereas the android URI shows the scheme as content
Never found a solution for the original question. But if you want the byte stream of an image in the pictures gallery, this piece of code will do that.
CODE:...................
I have a Cursor points to a Contact. How can I get an url built from that Cursor?
I need to know that because from here: http://developer.android.com/guide/topics/providers/content-providers.html
I need to have an url so that I can build a phone uri, like this: phoneUri = Uri.withAppendedPath(uri, People.Phones.CONTENT_DIRECTORY);
and I can query all the phone numbers for that contact.
I'm confused about the concept of the Context class. I see that it's a base class of Activity, but the Android docs also mentions the Context storing global information about the app environment. So in my app which has 3 activities, does that mean I have 3 distinct Context objects, or do they actually refer to 1 entity? Also, what is the lifetime of a Context object- does it live until the last component of this activity's process is garbage collected?
View 1 Replies View RelatedI want to get drag event(s) when user holds finger on screen and drags it in any direction. The event need to repeatedly provide new touch position until finger is released in the form of callbacks. This is not related to dragging objects.I could see this drag feature working on home screen of the phone to move the home screen left and right. But couldn't figure out how it works. Please provide information on which class and methods to be referred for this.
View 2 Replies View RelatedI want to get the object from the webview how to do it ?
View 3 Replies View RelatedAs part of my widget, I use an instance of the Camera object.
This is what I want to do. The user will click on my widget, I get an instance of the Camera(if it's not already stored), use it, then store it. If they click the widget again, I want to use that same instance that I used previously.
I can't release the Camera(android.hardware.Camera) until the user clicks on the widget the second time. So the user clicks on the widget the first time, I get the camera and hold on to it until they click the widget again.
The problem I am running into is on the second click, I am trying to get the Camera again, which I can't because I currently have it in use.
I have a custom class, which represents my data-structure. This custom class is in a normal Java-library, which is included in both projects. I have one Project with a ContentProvider which provides this data to Activities of other Projects. And an other Project with an Activity, where I want to handle this data in objects of this custom class.
How can I get this data to the Activity? The Cursor [1] only supports primitive Types.
[1] http://developer.android.com/reference/android/database/Cursor.html
I have a Weather app with four Activities. The main/launcher activity is 'invisible' using...
android:theme="@android:style/Theme.Translucent.NoTitleBar"`
Aand is simply used to do a few checks (whether this is a new install, whether a network connection is available etc) before firing off one of the other Activities. The other Activities are UI-oriented - two simply display weather data pulled from a website and the third to provide a location 'picker' so the user can choose which area to show the weather for.
However, all four activities make use of a WeatherHelper object which basically does everything from checking for available SD card storage to maintaining preferences and pulling/formatting website pages.
So, my question(s)...what is the best way to have one instance of WeatherHelper which can be used by multiple activities and where/how are best to create it in my case?
I've been an OO programmer for a lot of years but I'm very new to Android and the design concepts - I've read a lot on the Android Developers site over the past weeks but I've stalled trying to decide on this.
I often run into the following dilemma: I need some singleton-like object in my app (typically some central manager-like thing) and this object needs a context for various things. This means that I either have to pass a context to all methods needing one or have some sort of init-pattern to the object. Neither is pretty I think. What is the correct way of doing this? Or is this simply (even the definition of) a Service?
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