从活动传递数据使用奥托到碎片 [英] Passing data from Activity to Fragment using Otto
问题描述
在我的应用程序,我动态地添加到片段中的容器主要活动视图。我想知道什么是使用奥托当我们添加片段时,通过数据的最佳方式。目前,这是我怎么做,请例如,在我没有张贴我CustomObject
在我的主要活动
getSupportFragmentManager()的BeginTransaction()
。新增(R.id.fragment_container,MY_CUSTOM_FRAGMENT).commit();
。BusProvider.getInstance()后(produceCustomString());
在我的片段
@Subscribe
公共无效onCustomStringChanged(字符串customString){
}
方法标注 @Subscribe
将自动被调用,如果你也有一个 @Produce
法注册的相同类型的。
告知新的数据碎片一样,这是你有活性的 @Produce
方法,最好的方法:
@Produce公共字符串produceCustomString(){
返回你好,世界!;
}
然后所有的片段具有 @Subscribe
方法:
@Subscribe公共无效onCustomStringEvent(String事件){
// ...
}
当您注册一个片段,它有这种方法,奥托将拜会活动的 @Produce
方法来获得,它会传递给片段的方法中的最新值。
In my application I'm adding Fragments dynamically to the container in main activity view. I would like to know what is the best way to pass data when using Otto when we add Fragment. Currently this is how I'm doing it, please in example I'm not posting my CustomObject
Inside My Main Activity
getSupportFragmentManager().beginTransaction()
.add(R.id.fragment_container, MY_CUSTOM_FRAGMENT).commit();
BusProvider.getInstance().post(produceCustomString());
Inside My Fragment
@Subscribe
public void onCustomStringChanged(String customString) {
}
Methods annotated with @Subscribe
will automatically be called if you also have a @Produce
method for the same type registered.
The best way to inform new fragments of data like this is you have an @Produce
method on the activity:
@Produce public String produceCustomString() {
return "Hello, World!";
}
And then all your fragments which have @Subscribe
methods:
@Subscribe public void onCustomStringEvent(String event) {
// ...
}
When you register a fragment which has this method, Otto will call the @Produce
method on the activity to get the latest value which it will pass to the fragment's method.
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