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[英]Pass data from Activity to Fragment in another Activity
[英]Pass data object to an Activity from another activity (Fragment -> its Activity-> new Activity)
我已經創建了名為“ EventFragment”的listFragment類,並且需要在其click事件上傳遞數據對象以傳遞抽屜活動類(片段類),然后我需要將該對象傳遞給另一個名為EventDisplayActivity類的活動。 我可以將get數據對象管理到抽屜活動類,但不能將其發送到EventDisplayActivity類。
//DrawerActivity code
@Override
public void OnEventItemClick(ZEvent zEventObject) {
Log.i("URI uri", ""+zEventObject.getEventName());
zEventItem = (ZEvent)zEventObject;
Bundle b = new Bundle();
b.putParcelable("EVENT_ITEM", zEventItem);
Intent i = new Intent(DrawerActivity.this, EventDisplayActivity.class);
i.putExtra("DUMMY","dummytext");
i.putExtras(b);
startActivity(i);
}
// EventDisplayActivity
@Override
protected void onInit(ModelBase... data) {
System.out.println("onInit() Called in Event Display Activity");
SharedPreferences sessionkey = getApplicationContext().getSharedPreferences("session_detail", Context.MODE_PRIVATE);
session_token = sessionkey.getString("session", "");
logged_user_type = sessionkey.getString("user_type", "");
logged_user_id = sessionkey.getString("user_id", "");
Intent i = getIntent();
Bundle extras = i.getExtras();
ZEvent zEventbundle = extras.getParcelable("EVENT_ITEM");
mProposalId = zEventbundle.getProposalID();
String mDummy = getIntent().getStringExtra("DUMMY");
Log.i("id>>>",""+mProposalId +"Dummy"+mDummy);
params = new RequestParams();
params.put("token", session_token);
params.put("proposal_id", mProposalId);
mApiClient.getView(eventViewURL, params, eventResponse);
}
//LOgCat
java.lang.RuntimeException: Unable to start activity
ComponentInfo{gg.zing/gg.zin.zing.events.activities.EventDisplayActivity}: java.lang.NullPointerException
Caused by: java.lang.NullPointerException
at gg.zin.zing.events.activities.EventDisplayActivity.onInit(EventDisplayActivity.java:431)
我假設您的ZEvent實現了Parcelable ...如果這樣做,則使用putExtra(而不是創建新的Bundle和使用putExtras)放入意圖中,並使用getParcelableExtra提取相同的方法。
// Put final Intent intent = new Intent(context, <class>); intent.putExtra("MY_EVENT", obj); // <-- Should be parcelable
// Get.
ZEvent obj = intent.getParcelableExtra("MY_EVENT");
您還可以在用於將數據保存在靜態字段中的類中定義靜態屬性。
public class AppData{
public static String user = "Ben";
}
您可以像這樣使用它:
public void setUser(String user){
AppData.user = user;
}
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