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We all know that the interface display on Android is done through activity, the activity is too common, I believe we are already very familiar with, here will not repeat. But activity also has its limitations, the same interface on the mobile phone may look good, on the tablet is not necessarily, because the flat screen is very large, the mobile phone interface on the tablet may be stretched excessively, control spacing too large and so on. The bette
Android Fragment is loaded into an Activity, androidfragment Fragments is added after android3.0. It is mainly used to facilitate the development of android tablets. Easy to adapt to different sizes of screens. This code is used to add Fragment to an Activity for the simplest use of
Just like the user control in WinForm, you can add a user control directly to the specified location when a page is initialized, or it can be added dynamically with more data.For Android fragment, there are two ways, one called static loading, and one called dynamic loading.Whether it's static or dynamic, there's a fragment activity first.Relativelayoutxmlns:andr
Android Internship notes (3)---Fragment with app package or V4 package parsing1) Problem briefBelieve that a lot of friends in the call fragment will encounter the following situation:This time the problem comes ...In the end is to use Android.app under the fragment or Android.support.v4.app bag under the
The popular application of the navigation is generally divided into two kinds, one is the bottom navigation, one is the side bar. Description Ide:as,android Studio;Simulator: genymotion; The effect of the implementation, see the figure below. Concrete implementation In order to understand this implementation process, we post the code more than one write, so that more convenient to understand [the final release of the complete code implementat
Dynamic Fragment creation for android In the previous article, we talked about static Fragment creation, which is almost unnecessary in actual development. They are all dynamically created. The so-called dynamic creation is to dynamically create Fragment according to a certain condition, Create an
Fragment switching/**** fragment switch @params tofragment will switch to the fragment ResId mount fragment the identity of the view Idindex fragment Determine fragment to the left or to the right to use a different animation note
Android component: Fragment instance Fragment depends on the Activity, but is independent from the Activity. It can be regarded as a sub-Activity in the Activity, which is generally used on a tablet because the space of an Activity is too large, so it can be divided into several fragments for use, so why is it Fragment
the type of the parameter in the list In other words, the parameter in the list shown is fragment is the android.app.Fragment type, but Newsfragment StoryFragment is extends ANDROID.SUPPORT.V4 package Under the fragment That is, the parameter types do not match, you need to change the parameter type to the same, I will change the list of
Determine if the current fragment is visiblePublic abstract class Basefragment extends Fragment {/**/protected boolean isVisible; @Overridepublicvoid Setuservisiblehint (Boolean isvisibletouser) { super.setuservisiblehint (isvisibletouser); if (Getuservisiblehint ()) { true; Else { false; }}}The fragment lifecycle interacts with the a
Onsaveinstancestate (Bundle outstate) { //Save View Layer Outstate.putbundle (Window_hierarchy_tag, Mwindow.savehierarchystate ()); Parcelable p = mfragments.saveallstate (); if (P!= null) { outstate.putparcelable (Fragments_tag, p); } Getapplication (). Dispatchactivitysaveinstancestate (this, outstate); } 4 Solutions (easy to understand after the solution is clear) Solution1: First, the simple way is to add a background color to each layer of fragm
This article mainly introducesHow to Use ViewPager, Fragment, and PagerTabStrip to achieve multi-page sliding. That is, the effect of the google play homepage and Sina Weibo message (at, comment, private message, broadcast) page. ViewPager + Fragment is a combination of google recommendation methods, which is much more efficient than TabActivity + Activity. 1. Add the a
(Getuservisiblehint ()) { -IsVisible =true; - onvisible (); -}Else { +IsVisible =false; - oninvisible (); + } A } at - protected Abstract voidLazyload ();//lazy Loading method, in which we add data for each component of fragment - - protected voidonvisible () { - lazyload (); - } in - protected voidoninvisible () { to + } - the}In fact, we can also in our fragment direct
Android-day program: Embedded Fragment and androidfragment Fragment is equivalent to a small activity, because Fragment can implement all the functions of the activity. The difference is that Fragment can be embedded into the activity, and one activity can have multiple
The 1.android dialog box is asynchronous and executes the following code as soon as the dialog box is created. Benefits:A. Feedback the user's interaction with the dialog box by implementing a callback method for the dialog box. B. Be able to clear the dialog box in the code. 2. The Fragment dialog base class Dialogfragment inherits from fragment. 3 Steps to disp
Developing Android sometimes comes across the problem of transforming activity into fragment. Originally fragment is the new Android version of the stuff, but since Google is so gracious to provide a compatible package. Then there will always be such a need, fortunately, the transformation of activity to
Objective Nested level Two fragment cannot receive Oncreateoptionsmenu event, set Sethasoptionsmenu also no use. Body Supplementary Note: If you manually call level two fragment through the cache fragment, there may be some puzzling problems, such as more menu not displayed. Solution: Add menu to the first level fragmen
[Go to] Android Activity/Fragment Lifecycle and androidlifecycle From: http://stormzhang.github.io/android/2014/08/08/activity-fragment-lifecycle/ Activity and Fragment are the most important and frequently used components in Android
Onsaveinstancestate (Bundle outstate) {In the activitySave the necessary data before the system automatically destroys the activity @overridepublic void Onsaveinstancestate (Bundle outstate) {Here is an important point, above the above mentioned Onsaveinstancestate () method only when the activity or fragment determined to be automatically purged by the system, will be called, if not long-term background applications, the page is not killed by the sy
(downLoad = = null) {DownLoad = new Dwonload ();}Jumpfragment (DownLoad, "downLoad");}});Btnmine.setonclicklistener (New Onclicklistener () {@Overridepublic void OnClick (View v) {if (mine = = null) {Mine = new Mine ();}Jumpfragment (Mine, "Mine");}});}private void Jumpfragment (Fragment Fragment, String tab) {Fragmentmanager manager = Getsupportfragmentmanager ();Fragmenttransaction action = Manager.begin
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