片段已添加，dialogfragment? [英] Fragment already added, dialogfragment?

问题描述

我的对话框片段显示得很好，但是当我尝试显示它时，我不断得到IllegalStateException

I have a dialogfragment which displays fine but some time when I try to display it I keep getting IllegalStateException

下面是logcat

java.lang.IllegalStateException: Fragment already added: SelectPlan04Dialog{fa768dc #7 }
    at android.support.v4.app.FragmentManagerImpl.addFragment(FragmentManager.java:1893)
    at android.support.v4.app.BackStackRecord.executeOps(BackStackRecord.java:760)
    at android.support.v4.app.FragmentManagerImpl.executeOps(FragmentManager.java:2595)
    at android.support.v4.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2382)
    at android.support.v4.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2337)
    at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2244)
    at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:702)
    at android.os.Handler.handleCallback(Handler.java:790)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:192)
    at android.app.ActivityThread.main(ActivityThread.java:6679)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:826)]

这是我调用对话框的代码

This is the code as how I am calling the dialog

if (selectPlan04Dialog == null) {
    selectPlan04Dialog = new SelectPlan04Dialog();
}
if (!selectPlan04Dialog.isVisible() && !selectPlan04Dialog.isAdded()) {
    Bundle b = new Bundle();
    b.putSerializable("moduleApi", module);
    selectPlan04Dialog.setArguments(b);                
    selectPlan04Dialog.show(getCurrentActivity().getSupportFragmentManager(), "");
}

推荐答案

片段事务是异步的.

在执行片段事务之前，您可能有两个或两个以上对此代码的调用. !selectPlan04Dialog.isVisible() & !selectPlan04Dialog.isAdded()条件为true，并且show()安排另一个片段事务以稍后执行.

It is possible that you have two or more calls to this code before the fragment transactions are executed. !selectPlan04Dialog.isVisible() & !selectPlan04Dialog.isAdded() condition is true and show() schedules another fragment transaction to execute later.

一些解决此问题的方法:

Some options for fixing this:

• 每次都创建一个新对话框，不要尝试重用旧对话框
• 将异步片段事务更改为与对片段管理器executePendingTransactions()的调用同步

这篇关于片段已添加，dialogfragment?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！