在Activity上下文之外启动新Activity.

Question

我尝试Activity在我的AsyncTask班级(onPostExecute())中开始并关闭其他人.

我的代码:

Intent i = new Intent(parentActivity, ThunderHunter.class);
c.startActivity(i);
parentActivity.finish();

但它不起作用,logcat显示:

08-01 18:01:27.640: E/AndroidRuntime(12398): android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity  context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?
08-01 18:01:27.640: E/AndroidRuntime(12398):    at android.app.ContextImpl.startActivity(ContextImpl.java:1029)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at android.app.ContextImpl.startActivity(ContextImpl.java:1023)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at android.content.ContextWrapper.startActivity(ContextWrapper.java:283)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at com.radzik.thunter.FunkcjeAPI$Logowanie.onPostExecute(FunkcjeAPI.java:151)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at com.radzik.thunter.FunkcjeAPI$Logowanie.onPostExecute(FunkcjeAPI.java:1)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at android.os.AsyncTask.finish(AsyncTask.java:631)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at android.os.AsyncTask.access$600(AsyncTask.java:177)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at android.os.Handler.dispatchMessage(Handler.java:99)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at android.os.Looper.loop(Looper.java:137)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at android.app.ActivityThread.main(ActivityThread.java:4898)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at java.lang.reflect.Method.invokeNative(Native Method)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at java.lang.reflect.Method.invoke(Method.java:511)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
08-01 18:01:27.640: E/AndroidRuntime(12398):    at dalvik.system.NativeStart.main(Native Method)

所以我改变了代码:

Intent i = new Intent(context, ThunderHunter.class);
c.startActivity(i);
parentActivity.finish();

但没有例外的结果(仍然是相同的错误).

那有什么办法吗？

Answer 1

logcat会告诉您第一行中的问题

Calling startActivity() from outside of an Activity  context requires the FLAG_ACTIVITY_NEW_TASK flag

添加那个标志

Intent i = new Intent(context, ThunderHunter.class);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
c.startActivity(i);
parentActivity.finish();

您可以在文档中获取所有可用的列表Intent Flags