#3983

08.06.2018

If you're adding multiple fragments to the same container, then the order in which you add them determines the order they appear in the view hierarchy . If you add multiple changes to the transaction—such as another add() or remove()—and call addToBackStack(), then all changes applied before you call commit() are added to the back stack as a single transaction and the Back button reverses them all tog . Before you call commit(), however, you might want to call addToBackStack(), in order to add the transaction to a back stack of fragment transactions. This back stack is managed by the activity and allows the user to return to the previous fragment state, . A great feature about using fragments in your activity is the ability to add, remove, replace, and perform other actions with them, in response to user interaction. Each set of changes that you commit to the activity is called a transaction and you can pe . Get fragments that exist in the activity, with findFragmentById() (for fragments that provide a UI in the activity layout) or findFragmentByTag() (for fragments that do or don't provide a UI). . Pop fragments off the back stack, with popBackStack() (simulating a Back command by the user). . egister a listener for changes to the back stack, with addOnBackStackChangedListener(). . Some things that you can do with FragmentManager include . The resource ID of the layout you want to inflate. . The ViewGroup to be the parent of the inflated layout. Passing the container is important in order for the system to apply layout parameters to the root view of the inflated layout, specified by the parent view in which it's going. . A boolean indicating whether the inflated layout should be attached to the ViewGroup (the second parameter) during inflation. (In this case, this is false because the system is already inserting the inflated layout into the container—passing true would . The inflate() method takes three arguments:

07.06.2018

Your implementation of this method must return a View that is the root of your fragment's layout. . To provide a layout for a fragment, you must implement the onCreateView() callback method, which the Android system calls when it's time for the fragment to draw its layout . Displays a hierarchy of Preference objects as a list, similar to PreferenceActivity. This is useful when creating a "settings" activity for your application. . Displays a floating dialog. Using this class to create a dialog is a good alternative to using the dialog helper methods in the Activity class, because you can incorporate a fragment dialog into the back stack of fragments managed by the activity, allowin . The system calls this method as the first indication that the user is leaving the fragment (though it doesn't always mean the fragment is being destroyed). This is usually where you should commit any changes that should be persisted beyond the current use . The system calls this when it's time for the fragment to draw its user interface for the first time. To draw a UI for your fragment, you must return a View from this method that is the root of your fragment's layout. You can return null if the fragment do . The system calls this when creating the fragment. Within your implementation, you should initialize essential components of the fragment that you want to retain when the fragment is paused or stopped, then resumed . Usually, you should implement at least the following lifecycle methods: . You should design each fragment as a modular and reusable activity component. That is, because each fragment defines its own layout and its own behavior with its own lifecycle callbacks, you can include one fragment in multiple activities, so you should d . Fragments allow such designs without the need for you to manage complex changes to the view hierarchy. By dividing the layout of an activity into fragments, you become able to modify the activity's appearance at runtime and preserve those changes in a bac . Because a tablet's screen is much larger than that of a handset, there's more room to combine and interchange UI components . Android introduced fragments in Android 3.0 (API level 11), primarily to support more dynamic and flexible UI designs on large screens, such as tabletsy . s un . . te guinda . lejano . pastor mediocre . abismo

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When you add a fragment as a part of your activity layout, it lives in a ViewGroup inside the activity's view hierarchy and the fragment defines its own view layout. You can insert a fragment into your activity layout by declaring the fragment in the acti . A fragment must always be hosted in an activity and the fragment's lifecycle is directly affected by the host activity's lifecycle. For example, when the activity is paused, so are all fragments in it, and when the activity is destroyed, so are all fragme . A Fragment represents a behavior or a portion of user interface in a FragmentActivity. You can combine multiple fragments in a single activity to build a multi-pane UI and reuse a fragment in multiple activities. You can think of a fragment as a modular s

Fragments  |  Android Developers

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portunidad física y social se puede lograr a través del cambio ambienta . motivación automática puede lograrse a través del aprendizaje asociativo que provoca sentimientos e impulsos y contra impulsos positivos (o negativos) relacionados con el objetivo conductual, . aumentando el conocimiento y la comprensión, provocando sentimientos positivos (o negativos) sobre el objetivo conductual . motivación reflexiva . impartiendo conocimiento o comprensión, entrenando habilidades emocionales, cognitivas y / o conductuales . capacidad psicológica . desarrollo de habilidades físicas . capacidad física s

Microsoft pone al día Windows 7 con un pack acumulativo de actualizaciones y mejoras

Microsoft pone al día Windows 7 con un pack acumulativo de actualizaciones y mejoras

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BCW se basa en una sola teoría unificadora de la motivación en contexto que predice qué aspectos del sistema motivacional necesitarán ser influenciados . Qué condiciones internas para los individuos y en su entorno social y físico deben estar en su lugar para que se logre un objetivo conductual específico? . El BCW analizaría el comportamiento del objetivo en contexto y observaría que, independientemente de la covariación que exista actualmente, el comportamiento del objetivo consiste en una actividad en la que la capacidad no está en cuestión, y la moti . El "mapeo de la intervención" sugeriría que la preocupación sea el objetivo de una intervención . conducta en . comportamiento solo se puede entender en relación con el contexto. . contexto es, por lo tanto, el punto de partida del diseño de intervención. . El componente de "oportunidad" del modelo de comportamiento es el contexto . el contexto es clave para el diseño e implementación efectivos de las intervenciones, . coacción, restricción, reestructuración ambiental y modelado) ponen más énfasis en las influencias externas y menos en la agencia personal. . educación, persuasión, incentivación, capacitación y habilitación. . Nudge . ara influir en el comportamiento, como defiende el popular libro . lgunos incentivos y formas de persuasión sutil . reestructuración ambiental, . La prueba más importante de este marco será si proporciona un método más eficiente para elegir los tipos de intervención que probablemente sean apropiados para un objetivo conductual determinado en un contexto determinado y una población determinada

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