Using Intent in an Android application to show another activity

In my Android application, I have two activity classes. I have a button on the first one and I want to show the second when it is clicked, but I get an error. Here are the classes:

How can I open a URL in Android"s web browser from my application?

How to open an URL from code in the built-in web browser rather than within my application?

Android Notification intent to clear it self

I have read many examples of how to create notification messages. What i wanted to achieve, is because the notification will be executed by a widget, i would like the notification intent when clicked to clear it self when the user clicks on it.I do not have an activity to return to. The notification for my purposes will just plainly notify, nothing else. So what would be the code of an intent that just clear/cancel itself. The code below is an activity launched by a button(button code not included) the notification will be fired up by a background service.

install / uninstall APKs programmatically (PackageManager vs Intents)

My application installs other applications, and it needs to keep track of what applications it has installed. Of course, this could be achieved by simply keeping a list of installed applications. But this should not be necessary! It should be the responsibility of the PackageManager to maintain the installedBy(a, b) relationship. In fact, according to the API it is:

Intent for selecting wallpaper with wallpaper region highlighting

I would like to know if it's possible to create an Intent that makes the gallery cropper show wallpaper highlighting. This feature has been introduced in Honeycomb. To get an idea of what I'm looking for have a look at the tablet on the image (the three blue rectangles).

How I can install apk automatically when the sdcard put on?

I have not any idea. How can I install apk automatically when the sdcard put on?

How I can install apk automatically when the sdcard put on?

I have not any idea. How can I install apk automatically when the sdcard put on?

SQLlite Android. Managing data

Hi friends. I'll tell you the aim of this part of my app. I've got a SQLite dB which has 3 columns. First is "Quantity", Second is "Product" and third is "Price". Well, what i want to do is to get the whole dB and send it by email. This is what i have right now:

SQLlite Android. Managing data

Hi friends. I'll tell you the aim of this part of my app. I've got a SQLite dB which has 3 columns. First is "Quantity", Second is "Product" and third is "Price". Well, what i want to do is to get the whole dB and send it by email. This is what i have right now:

Show frame before capturing image for android app

I want to show human posture/any other shape as a frame when we on the mobile camera and set the preview in that frame before capturing it.I want this to implement in my android app??Please can anyone help me out?

Android app crashes on load - classNotFoundException

This has been driving me mad for a couple of days :)

I want to refer checkbox in another activity in android

In my application i am having checkboxes in first activity that i want to refer on second activity with its state information whether it is checked or unchecked . is there any way to do this plz explain in detail with example . Thank you.

My Program stops after 2nd intent in android

My android application stops after startActivity () call of my 2nd intent. It works perfectly for the first time with intents. But on the 2nd time its control doesn't pass to 3rd activity. I haven't displayed anything on 2nd activity. Is it the problem? Or is something with my AndroidManifest.xml file? Can some one help me? I have added the intent filter of three activities as shown below.Is it the problem? I am new to android so please help me!

Android navaigation bar with ListView

i just did ListView like this:

Android phonegap app : unable to retrieve an image taken by the camera using my own code (not phonegap"s)

Note- even though im using phonegap, the question is not about some issue in that.

How to retrieve sms date field in android

I'm new to Android programming and I was writing some test code to retrieve all the sms messages in the inbox using an sms intent. The code I wrote is as follows:

How to put more than pending intent /actions in one notification?

I want to display a custom notification. The notification will have a little refresh button on its right side. When a user clicks that button, notification is updated to newer information. And if a user clicks at any other place, then the actual pending intent gets fired.

Android - TabHost

I have a tabhost implemented with three tabs and are functioning. What I wanted to know if there is any way back when to click the same tab is selected, it returns to its initial state (like a reset)?

UML Class Diagram for Android

In a UML class diagram, how would you display calling another activity with an intent?

Empty intent extras in onActivityResult

I have two activities.

First calls second like this: