android-fragmentactivity

Real approach for Avoiding Re-creation of Fragment after Screen Rotate (Official Fragment Developer Guide as example)

元气小坏坏 提交于 2019-12-01 01:56:21
i'm finding a Real approach for Avoiding Re-creation of Fragment after Screen Rotate if (container == null) { return null; } is not really avoiding the Fragment to be re-created at all. (illustrated below) Where is the Official Fragment Developer Guide? The official guide we are concerning is at http://developer.android.com/guide/components/fragments.html . The partial example code is at the bottom of the guide. As far as i know, the full sample code is available in the "Samples for SDK" under Android 3.0 (API 11). Also, i have done minimal modification to the sample code for it to run in API

OnLoadFinished() called twice

守給你的承諾、 提交于 2019-11-30 21:44:56
问题 I'm trying to figure out if I'm doing something wrong with respect to Loaders. I'm using the support library, and I have a Fragment which in onCreate() calls initLoader() setting itself as the LoaderCallbacks, however on a rotation it is receiving the result twice in onLoadFinished(), once as a result of calling init (and it already having the data), and once as a result of FragmentActivity looping through all Loaders in onStart() and delivering the result since it already has the data. If I

Android Fragments - 2 Fragment & 1 Frame Layout

百般思念 提交于 2019-11-30 20:54:22
问题 I am trying to create a layout with three vertical panel - 2 fragments and 1 frame layout. 1st fragment will be a list on selection, 2nd fragment will have different content. on selecting a list item from 2nd fragment, 3rd pane will show the details. Here's my layout files: activity_three_pane.xml: <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent"

Replacement of TabActivity with FragmentActivity and Fragments

放肆的年华 提交于 2019-11-30 15:45:56
问题 Since TabActivity is deprecated I need to find a way to do it with Fragments. I have worked with Fragments before I know how it works but I need a guide to create my tab host with FragmentActivities. I have found a couple of examples on the internet, and they are all about putting fragments into a container for the tabs. What I want is to put FragmentActivities for each tab. Because in my application I will be using 4 tabs and each of the tabs have really complex content in it. As a result, I

Replacement of TabActivity with FragmentActivity and Fragments

可紊 提交于 2019-11-30 15:30:01
Since TabActivity is deprecated I need to find a way to do it with Fragments. I have worked with Fragments before I know how it works but I need a guide to create my tab host with FragmentActivities. I have found a couple of examples on the internet, and they are all about putting fragments into a container for the tabs. What I want is to put FragmentActivities for each tab. Because in my application I will be using 4 tabs and each of the tabs have really complex content in it. As a result, I need to have a FragmentActivity for each tab to manage the Fragments that I will put under each tab

pull to refresh and loadmore listview like facebook [closed]

心已入冬 提交于 2019-11-30 14:46:09
here i am using sliding drawer. in that on click home icon it shows 3 tabs 1) which concept should i apply for tab ? 2) I want to apply pulltoreferesh and loadmore in listview like facebook ? in that you have also seen that when scrolling up progressbar gets hide and request get cancel. public class ListDemo extends Fragment{ ArrayAdapter<String> files; private LinkedList<String> mListItems; PullAndLoadListView lyt ; // ListView lv1; // The data to be displayed in the ListView private String[] mNames = { "Fabian", "Carlos", "Alex", "Andrea", "Karla", "Freddy", "Lazaro", "Hector", "Carolina",

Get view of Fragment from FragmentActivity

一笑奈何 提交于 2019-11-30 14:32:32
问题 I have a FragmentActivity where I add a Fragment . Depending on some situation, I want to access Buttons from that fragment's layout and change click listeners of them. What I do is: View view = myFragment.getView(); Button myButton = (Button) view.findViewById(R.id.my_button); myButton.setOnClickListener(new MyClickListener()); But the view variable is always null . How can I get the view of the activity? 回答1: If you want to access your component and set some data, I suggest you to make a

Can't retain nested fragments

懵懂的女人 提交于 2019-11-30 11:08:14
问题 Is there another way of saving the state of the nested fragment ? Or if we shouldn't do this, why ? Thanks ! 02-13 11:42:43.258: E/AndroidRuntime(7167): java.lang.IllegalStateException: Can't retain fragements that are nested in other fragments 02-13 11:42:43.258: E/AndroidRuntime(7167): at android.support.v4.app.Fragment.setRetainInstance(Fragment.java:742) 回答1: You can use FragmentManager.saveFragmentInstanceState(Fragment) to retrieve a fragment state. The return value implements

Using `onRetainCustomNonConfigurationInstance` to retain data across configuration changes

Deadly 提交于 2019-11-30 10:59:44
问题 I've been programming for Android for some time, and I'm still looking for solutions to retain data over configuration changes. Aside from saving Parcelable s to Activity's Bundle in onSaveInstanceState docs are suggesting using Fragment with setRetainInstance flag set to true. But I've just come across some code that uses onRetainCustomNonConfigurationInstance to hold arbitrary objects (in a fancy way, but essentially big objects without references to Activity etc.). I have never seen this

Get view of Fragment from FragmentActivity

。_饼干妹妹 提交于 2019-11-30 10:53:52
I have a FragmentActivity where I add a Fragment . Depending on some situation, I want to access Buttons from that fragment's layout and change click listeners of them. What I do is: View view = myFragment.getView(); Button myButton = (Button) view.findViewById(R.id.my_button); myButton.setOnClickListener(new MyClickListener()); But the view variable is always null . How can I get the view of the activity? Jarvis If you want to access your component and set some data, I suggest you to make a method inside the fragment like this: import android.os.Bundle; import android.support.v4.app.Fragment;