I have two activities: main activity and child activity. When I press a button in the main activity, the child activity is launched. Now I want to send some data back to the main screen. I used the Bundle class, but it is not working. It throws some runtime exceptions. Is there any solution for … Read more
I asked a similar question to this earlier this week but I’m still not understanding how to get a list of all installed applications and then pick one to run. I’ve tried: Intent intent = new Intent(ACTION_MAIN); intent.addCategory(CATEGORY_LAUNCHER); and this only shows application that are preinstalled or can run the ACTION_MAIN Intent type. I also … Read more
In Android I have some activities, let’s say A, B, C. In A, I use this code to open B: Intent intent = new Intent(this, B.class); startActivity(intent); In B, I use this code to open C: Intent intent = new Intent(this, C.class); startActivity(intent); When the user taps a button in C, I want to go … Read more
Can someone please tell me how exactly to use getExtra() and putExtra() for intents? Actually I have a string variable, say str, which stores some string data. Now, I want to send this data from one activity to another activity. Intent i = new Intent(FirstScreen.this, SecondScreen.class); String keyIdentifer = null; i.putExtra(strName, keyIdentifer ); and then … Read more
What is an Intent in Android? Can someone elaborate with an example? What are the types of Intents, and why we are using them? Why are Intents so important in Android? 14 Answers 14
I’m using the following code to make a call in Android but it is giving me security exception please help. posted_by = “111-333-222-4”; String uri = “tel:” + posted_by.trim() ; Intent intent = new Intent(Intent.ACTION_CALL); intent.setData(Uri.parse(uri)); startActivity(intent); permissions <uses-permission android:name=”android.permission.CALL_PHONE” /> Exception 11-25 14:47:01.661: ERROR/AndroidRuntime(302): Uncaught handler: thread main exiting due to uncaught exception 11-25 … Read more
My app needs to show Google Maps directions from A to B, but I don’t want to put the Google Maps into my application – instead, I want to launch it using an Intent. Is this possible? If yes, how? 17 Answers 17
Can anybody please guide me regarding how to launch my android application from the android browser? 16 Answers 16
I am playing with fragments in Android. I know I can change a fragment by using the following code: FragmentManager fragMgr = getSupportFragmentManager(); FragmentTransaction fragTrans = fragMgr.beginTransaction(); MyFragment myFragment = new MyFragment(); //my custom fragment fragTrans.replace(android.R.id.content, myFragment); fragTrans.addToBackStack(null); fragTrans.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE); fragTrans.commit(); My question is, in a Java file, how can I get the currently displayed Fragment … Read more
I want to launch an installed package from my Android application. I assume that it is possible using intents, but I didn’t find a way of doing it. Is there a link, where to find the information? 19 s 19 If you don’t know the main activity, then the package name can be used to … Read more
