解决我的问题通过
我们在碎片世界总是遇到的一个常见问题是:尽管我们可以直接从Nested Fragment调用startActivityForResult,但它似乎永远不会调用onActivityResult,这会带来很多麻烦来处理来自嵌套的Activity结果神父agment。
解决
所以我们从现在起将调用getActivity()。从片段,而不是仅仅startActivityResult(...)startActivityForResult(...)。像这样:
// In Fragment
Intent intent = new Intent(getActivity(), SecondActivity.class);
getActivity().startActivityForResult(intent, 12345);
其结果是,所有接收到的将在一个地方进行处理的结果的:该片段被放置在活动的onActivityResult。
问题是如何将活动结果发送到片段? 由于我们无法以正常方式直接与所有嵌套片段进行通信,或者至少以简单的方式进行通信。另一个事实是,每个Fragment都知道它必须处理哪个requestCode,因为它也是调用startActivityForResult的那个。所以我们选择“广播到每一个活动的片段”,然后让这些片段检查requestCode并做他们想做的事情。“
谈论广播,LocalBroadcastManager可以完成这项工作,但机械师太老了。我选择另一个选择,一个EventBus,它有很多选择。我选择的那个是来自广场的奥托。它在性能和稳健性方面非常出色。
dependencies {
compile 'com.squareup:otto:1.3.6'
}
以Otto的方式,我们创建一个总线事件作为一个包带有这些活动结果值。
import android.content.Intent;
/**
* Created by nuuneoi on 3/12/2015.
*/
public class ActivityResultEvent {
private int requestCode;
private int resultCode;
private Intent data;
public ActivityResultEvent(int requestCode, int resultCode, Intent data) {
this.requestCode = requestCode;
this.resultCode = resultCode;
this.data = data;
}
public int getRequestCode() {
return requestCode;
}
public void setRequestCode(int requestCode) {
this.requestCode = requestCode;
}
public int getResultCode() {
return resultCode;
}
public void setResultCode(int resultCode) {
this.resultCode = resultCode;
}
public Intent getData() {
return data;
}
public void setData(Intent data) {
this.data = data;
}
}
import android.os.Handler;
import android.os.Looper;
import com.squareup.otto.Bus;
/**
* Created by nuuneoi on 3/12/2015.
*/
public class ActivityResultBus extends Bus {
private static ActivityResultBus instance;
public static ActivityResultBus getInstance() {
if (instance == null)
instance = new ActivityResultBus();
return instance;
}
private Handler mHandler = new Handler(Looper.getMainLooper());
public void postQueue(final Object obj) {
mHandler.post(new Runnable() {
@Override
public void run() {
ActivityResultBus.getInstance().post(obj);
}
});
}
}
而且在活动
public class MainActivity extends ActionBarActivity {
...
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
ActivityResultBus.getInstance().postQueue(
new ActivityResultEvent(requestCode, resultCode, data));
}
...
}
,并最终处理回片段数据onActivityResult
public class BodyFragment extends Fragment {
...
@Override
public void onStart() {
super.onStart();
ActivityResultBus.getInstance().register(mActivityResultSubscriber);
}
@Override
public void onStop() {
super.onStop();
ActivityResultBus.getInstance().unregister(mActivityResultSubscriber);
}
private Object mActivityResultSubscriber = new Object() {
@Subscribe
public void onActivityResultReceived(ActivityResultEvent event) {
int requestCode = event.getRequestCode();
int resultCode = event.getResultCode();
Intent data = event.getData();
onActivityResult(requestCode, resultCode, data);
}
};
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// Don't forget to check requestCode before continuing your job
if (requestCode == 12345) {
// Do your job
tvResult.setText("Result Code = " + resultCode);
}
}
...
}
希望这个代码帮助任何一个面对这个问题
我认为这是要去是支持索尼的问题... – Yurets