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我經常需要來自不是Activity或Fragment的子類的自定義類的用戶交互(對話框)。以下是我目前正在做這件事的一個例子。我從創建自定義類的片段的片段管理器中打開對話框,然後使用一個小的內部類作爲目標,以便獲得對話結果。這使所有相關的代碼在一個地方,而不是在父片段將onActivityResult:自定義類中的對話框在Android中崩潰O
09-20 14:06:12.852 24301-24301/com.bizname.appname E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.bizname.appname, PID: 24301
java.lang.IllegalStateException: Fragment ALAlert{1ace4cd #8 confirmDelete} declared target fragment DocumentViewerAlertListener{7e21182} that does not belong to this FragmentManager!
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1209)
at android.app.FragmentManagerImpl.moveFragmentToExpectedState(FragmentManager.java:1549)
at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1611)
at android.app.BackStackRecord.executeOps(BackStackRecord.java:807)
at android.app.FragmentManagerImpl.executeOps(FragmentManager.java:2394)
at android.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2189)
at android.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2142)
at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:2049)
at android.app.FragmentManagerImpl$1.run(FragmentManager.java:718)
at android.os.Handler.handleCallback(Handler.java:789)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6541)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
:
public class DocumentViewer extends RelativeLayout {
public void deleteAnnotations() {
DialogFragment dialog = new DialogFragment();
Bundle args = new Bundle();
args.putString("title", this.app.getString(R.string.DELETE_ANNOTATIONS));
args.putString("message", this.app.getString(R.string.CONFIRM_DELETE_ANNOTATIONS));
args.putString("button1Text", this.app.getString(R.string.BUTTON_DELETE));
args.putString("button2Text", this.app.getString(R.string.BUTTON_CANCEL));
dialog.setArguments(args);
DocumentViewerAlertListener listener = new DocumentViewerAlertListener();
listener.canvas = this.canvas;
dialog.setTargetFragment(listener, R.id.confirmDelete);
dialog.show(this.fragment.getFragmentManager(), "confirmDelete");
}
public static class DocumentViewerAlertListener extends ALFragment {
public ALCanvas canvas;
@Override
public void onActivityResult(int requestCode, int resultCode, Intent resultData) {
if ((requestCode == R.id.confirmDelete)&&(resultCode == 1)) {
this.canvas.clearItems();
}
}
}
}
不幸的是,在Android的O,在dialog.show符合該堆棧跟蹤崩潰
這是有道理的,我使用的片段管理器不知道這個內部類,但有什麼選擇?我試着用內部類的片段經理...
dialog.show(listener.getFragmentManager(), "confirmDelete");
...並沒有崩潰,但是對話沒有出現,也許是因爲從不顯示聽者片段。
我願意爲我目前的方法進行快速修復,或者完成相同事情的其他方法(但希望快速修復!)。