fragment | 易学教程

How to pass from one fragment to another

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问题 In my app I have navigation drawer with some fragments. When I choose in the drawer I do this code: FragmentTransaction ft = fm.beginTransaction(); ft.replace(R.id.container, f, tag); ft.commit(); in the MainActivity. Now in one fragment I want to put a TabLayout in the bottom of the screen and I have this troubles: is it possible to replace from one fragment to another? Where could I put fragmentTransaction ? if I want to call a third fragment (for example a Send button in one of this tab

Initialize Typeface in a fragment

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问题 i have this line : Typeface font = Typeface.createFromAsset(getAssets(), "fonts/Delius-Regular.ttf"); but the getAssets() parameter seems to bring some error, it is underlined with scary red lines, it says The method getAssets() is undefined for the type ProfileFragment ProfileFragment is the name of my class and it extends Fragment. NOTE : The font style is also on the assets folder. 回答1: You cannot get getAssets() from a fragment directly. You have to use getActivity().getAssets() instead

Add PreferenceFragment on FragmentPagerAdapter

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问题 I use the last SDK to create an app with navigation type Tabs + Swipe and I want to put a PreferenceFragment on one of the tabs. The generated code is like : mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager()); // Set up the ViewPager with the sections adapter. mViewPager = (ViewPager) findViewById(R.id.pager); mViewPager.setAdapter(mSectionsPagerAdapter); Meanwhile, I can't add PreferenceFragment on the SectionsPagerAdapter because its method getItem(int position)

HtmlUnit and Fragment Identities

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问题 I'm currently wondering how to deal with fragment identities, a link that I am wanting to grab information from, contains a fragment identity. It seems as if HtmlUnit is discarding the "#/db4mj" of my url and therefore loading the original url. Does anyone know of a way to deal with fragment identities? (I can post example code to further explain if need be) EDIT Since I wasn't getting many views (and no answers), I'm going to add a bounty. Sorry it's only 50, but I only had 79 to start with

Not able to Update fragments text while swaping cards

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问题 I am working on a card swipe and card flip functionality and I am using ViewPager and fragments. My problem is I am not able to update TextView inside fragments as I swipe the card from left to right or right to left but when I flip the card it update the UI. I tried everything which is available over Internet but none of the soltuion is working for me. I am following this link https://github.com/jamesmccann/android-view-pager-cards Here is my code public class CardContainerFragment extends

Not able to Update fragments text while swaping cards

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OptionsMenu of Nested Fragments within ViewPager

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问题 I am using ActionBarSherlock and I am trying to implement a nested fragment structure with a viewpager. I have an activity which contains some views and a wrapper fragmet (FragmentA) This FragmentA contains a view pager which shows FragmentA.1, FragmentA.2 ,FragmentA.3. By Default, onCreateOptionsMenu events are not dispatched to child fragments as it is discussed here. So I am using this solution to overcome the issue. It works great over API level 17, but for below it does not show the

Navigation drawer with Activity and child Fragments

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问题 I have a Activity A , a ListFragment P and 2 Fragments Q and R . When the app is launched, A is created, which loads P . Based on what user clicks, it is replaced by Q or R . Now by referencing this tutorial, I have implemented a Navigation Drawer which shows certain items to the user. However, since I have implemented the Navigation Drawer in the Activity, it shows for all the Fragments. I want it to be only available to P . (Very much similar to Googles Gmail app. When the user is on the

android fragment created twice on orientation change

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问题 i am having this weird problem where my list fragment is created twice, once when the super.oncreate is called on the parent activity and once when the setContentView is called on the same parent activity. It is a simple application where i use different layout for portrait and landscape orientation. Here is the main activity: private HeadlinesFragment headlines; @Override public void onCreate(Bundle savedInstanceState) { Log.w("MainActivity", "Before super.onCreate: " + this.toString());

python爬虫3--urllib请求库之parse模块

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parse定义了处理URL的标准接口，实现URL的拆分，合并以及转换。 1.urlparse() url拆分 urlparse(urlstring，scheme=‘’，allow_ragments=True) scheme：默认协议，如果url不带协议的时候生效； allow_fragments：是否忽略fragment，如果忽略，会被解析成path，params或query的一部分。将url拆分为6部分： scheme：协议； netloc：域名； path：访问路径； params：参数； query：查询条件； fragment：锚点结果为元组，可用参数或索引取值。代码：运行结果： 2.urlunparse() url合并 urlunparse([scheme,netloc,path,params,query,frament]) 接受的参数为可迭代对象；个数必须为6个，否则报错代码：运行结果： 3.urlsplit() 和urlparse()相似，只是不再单独拆分params部分，将params合并到path中 4.urlunsplit() 和urlunparse()相似，唯一区别传入参数为5个 5.urljoin() base_url作为第一个参数，新连接作为第二个参数，该方法会分析base_url中的scheme，netloc，path三部分内容