onresume

问题 I currently have an Activty that when created starts and binds with a service . This service has a mediaplayer . What I would like to do is if the activity is resumed then the service keeps playing, etc. When the activity is destroyed, it should stop the service . So far I can get both the service to keep playing when activity is re-activated and the service to stop when a new activity is created but not both together. Any suggestions or ideas? Thanks. Code below: Activity class: public class

问题 I'm studying right now the bluetooth Android API, and I ran into the BluetoothChat example. http://developer.android.com/resources/samples/BluetoothChat/index.html It contains many errors, first of all the simple fact that it uses API 11 but manifest does not force this minimum API. Other interesting thing is the use of synchronized keyword on Activity lifecycle methods, like on onResume: @Override public synchronized void onResume() { super.onResume(); if(D) Log.e(TAG, "+ ON RESUME +"); //

问题 I have a Home replacement Activity from within which you can launch a number of apps. When you tap the Home button, you are returned to my Home replacement Activity. As I understand, tapping the Home button creates an intent to launch the Home screen and then starts that intent (I might be wrong, please correct me if I am!). If this is the case, I'd expect the onCreate() method to be run whenever the Home screen is created. On the other hand, when you launch another activity, the Home screen

问题 I am having 4 (let's say 1,2,3 & 4) fragments. And at a time any one of them will be visible to User. In 2nd fragment I want to do something when user is coming on it. Now when User navigated to 3rd fragment & hits the back button, I want to run a some code. My problem is onResume is not getting called when user hits the back button & come to 2nd fragment. 回答1: I recently bumped into the same problem, I know that its too late, but just in case some one else is looking for this, here's my

问题 I have Simple app first I display MainActivity then after MainActivity became visible I display TransparentActivity after that onClick I kill TransparentActivity and I create and display dialog. During last step I get Error Error Failure delivering result ResultInfo{who=null, request=1234, result=-1, data=Intent { }} to activity {com.example.kylu.layout/com.example.kylu.layout.GuidePhotoAlbum}: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState MainActivity

问题 I need my fragments to always call a certain function when they are the active fragment, so I put it in onResume(), but it isn't being called. Fragment A @Override public void onResume(){ super.onResume(); Log.d("clear state", " "+clear); if(clear == true) { restart(); clear = false; calculate(); } } I use a FragmentPagerAdapter with a ViewPager to switch fragments public class ScoutingFragSingle extends FragmentPagerAdapter{ @Override public Fragment getItem(int index) { Bundle data = new

问题 Should you get data via a cursor and fill in the data on the screen, such as setting the window title, in onStart() or onResume() ? onStart() would seem the logical place because after onStart() the Activity can already be displayed , albeit in the background. Notably I was having a problem with a managed dialog that made me rethink this. If the user rotates the screen while the dialog is still open, onCreateDialog() and onPrepareDialog() are called between onStart() and onResume() . If the

问题 I need to start the log in Activity if the user wasn't active for 5 minutes in the application ,without considering from what activity he left the application. (by not active for 5 minutes I mean that the user didn't commit any action to the server side) I have a Date variable inside my Application class: private Date timeOfLogin; that's is saved when the user commits log in, in some point of usage the user can get a phone call or a mail and will leave the application. now this can happen on

问题 I have a Spinner which is filled by a SimpleCursorAdapter within the onResume() method. The selection is also set in onResume: spinner.setSelection(x) . When I go to another activity and then go back to this activity, the Spinner shows the text of the first item, instead of the text of the selected item. How do I fix this? EDIT: Here's my code: @Override public void onResume(){ super.onResume(); fillSpinner(); } private void fillSpinner() { Db = new DbAdapter(this); Db.open(); final Cursor

问题 is it ok in an activity's procedure to force the onResume event by calling this.OnResume() ? Or should I implement another procedure that's called by both OnResume and by the first member ? 回答1: Implement another procedure that's called in your override of onResume() . The latter is not intended to be called by you, it's a convenience method that tidies up or readies the activity when its state changes to resume . A lot like onCreate() through to onDestroy() . 回答2: What @SK9 said, but also