Assigning an empty string will default to using the FragmentJavaName. The name to be passed into PopBackStackImmediate when closing the fragment. Defaults to the Java class name of the Fragment. In such cases you would need to provide your own tag for each instance. This is useful to use, if you want to use the same fragment in the same view multiple times. The presenter uses this to add fragments to the fragment transactions and to find fragments again later. If it is set to true, the ViewPresenter will try to find a Fragment instance already present in the FragmentManager object before instantiating a new one and will reuse that object. You should leave it that way unless you really want/need to reuse a fragment view (for example, in case you are displaying a WebView, you might want to cache the already loaded URL). In case you want to use a Transition Style, use this property by setting its resource id.ĭefault value is false. Resource id for the animation that will be run when the fragment is retrieved from foreground.
Resource id for the animation that will be run when the fragment comes back to foreground. Resource id for the animation that will be run when the fragment is closed. Resource id for the animation that will be run when the fragment is shown. If you set it to true the FragmentTransaction will be added to the backstack. Resource id where your fragment will be presented.ĭefault value is false. Use this property only in case you want a fragment to be shown as nested. The View type of the Fragment that will be the host of your fragment. Can be left empty only in case of fragments nesting. In case that Activity is not the current one in foreground, the ViewPresenter will show it before showing the fragment. The ViewModel type of the Activity that will be the host of your fragment. Use this attribute over a Fragment view class and customize its presentation by using these properties: Name The ViewPresenter also supports nested fragments in one level: This means you can show fragments inside of a Fragment without extending any code! MvvmCross can handle both scenarios smoothly. By using this ViewPresenter, you can decide whether to make all of your screens Activities, or to use an Activity host and many Fragments inside of it. Use this Bundle to add any extra parameters to the Activity Intent.Ī Fragment is hosted inside an Activity (or a fragment). Alongside the attribute, your view can customize the presentation by using these attribute properties: Name An Activity will be the root of your application and can also act as a host for fragments. Use this attribute if you want to display an Activity in your application. The existing attributes are: MvxActivityPresentationAttribute The presenter uses a set of PresentationAttributes to define how a view will be displayed. Navigation patterns that should be easy to implement with this are:Īlso if your app needs another kind of presentation mode, you can easily extend it! Presentation Attributes
#FRAGMENT LIFECYCLE FOR ANDROID#
The default presenter for Android named MvxAndroidViewPresenter or MvxAppCompatViewPresenter when using the Android AppCompat support library offers out of the box support for the following navigation patterns / strategies:
We also evaluate the performance of using FragDroid to analyze Android apps, the result shows the average overhead is 17%.Android View Presenter Edit View Presenter Overview In particular, for popular apps, the result is 50.8%. We conduct some experiments to evaluate the effectiveness of our tool and the results show that there are 8% of apps in our data set using Fragment. So in this paper, we propose an approach to model Fragment’s lifecycle and its relationship with Activity’s lifecycle, then introduce a tool called FragDroid based on FlowDroid.
Some data will be leaked if we don’t take Fragment’s lifecycle into consideration when performing data flow analysis in Android apps. We find that Fragment’s lifecycle also has an effect on the data flow analysis of Android apps. Many researchers have solved some problems of data flow analysis on Android platform, like Activity lifecycle, callback methods, inter-component communication. However, data flow analysis on Android platform is quite different from the programs on desktop. Many researchers apply data flow analysis to detect data leakages of an app. On the other hand, the attackers develop malware to collect sensitive data intentionally. On the one hand, careless programmers may leak the data by accident. There are two kinds of misuses of sensitive information for apps. Smartphones carry a large quantity of sensitive information to satisfy people’s various requirements, but the way of using information is important to keep the security of users’ privacy.
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