Question

我有一个Activity和很多Fragment个。我用hide＆amp; show。第一次一切正常，但当我退出应用程序并重新启动应用程序时崩溃。

以下是异常消息：

[ 05-10 10:47:12.561 15134:15134 E/         ]
                  android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@30940158 is not valid; is your activity running?
                      at android.view.ViewRootImpl.setView(ViewRootImpl.java:606)
                      at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:311)
                      at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:85)
                      at android.app.Dialog.show(Dialog.java:325)
                      at ruiming.com.medicalmanagement.view.MainActivity.showProgressDialog(MainActivity.java:447)
                      at ruiming.com.medicalmanagement.view.PatientsCases.loadList(PatientsCases.java:106)
                      at ruiming.com.medicalmanagement.view.PatientsCases.onViewCreated(PatientsCases.java:92)
                      at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:908)
                      at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:1069)
                      at android.app.BackStackRecord.run(BackStackRecord.java:834)
                      at android.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1454)
                      at android.app.FragmentManagerImpl$1.run(FragmentManager.java:447)
                      at android.os.Handler.handleCallback(Handler.java:739)
                      at android.os.Handler.dispatchMessage(Handler.java:95)
                      at android.os.Looper.loop(Looper.java:135)
                      at android.app.ActivityThread.main(ActivityThread.java:5689)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at java.lang.reflect.Method.invoke(Method.java:372)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

这是progressDialog show和hide个功能：

private static ProgressDialog progressDialog;

public static void showProgressDialog(Activity mActivity) {
    if(progressDialog == null){
        progressDialog = ProgressDialog.show(mActivity, "Please wait", "Loading...", true, false);
    }
    if(!mActivity.isFinishing() && !progressDialog.isShowing()){
        progressDialog.show();
    }      
}

public static void hideProgressDialog() {
    if (progressDialog != null && progressDialog.isShowing()) {
        progressDialog.dismiss();
    }
}

这些功能在活动中。

这是我的片段代码：

@Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        MainActivity.showProgressDialog(getActivity());
        new Thread(new Runnable() {
            @Override
            public void run() {
                mList = MyJDBCUtil.getPrAcupuntrueCode(getActivity());
                try {
                    Thread.sleep(500);
                    EventBus.getDefault().post(new EventBean.PrDiagonsisEvent("3"));
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }).start();

    }

    @Subscribe(threadMode = ThreadMode.MAIN, priority = 0, sticky = false)
    public void refreshList(EventBean.PrDiagonsisEvent pr) {
        if (pr.getMsg().equals("3")) {
            adapter = new TreatmentAdapter(getActivity());
            lvTreatmentList.setAdapter(adapter);
            MainActivity.hideProgressDialog();
        }
    }

我不知道我的代码有什么问题。有什么建议吗？

Answer 1

在你正在呼唤的showProgressDialog()中：

progressDialog.show();

两次..

当您为不再存在的上下文显示dialog时，会发生错误。

所以将代码修改为..

 public static void showProgressDialog(Activity mActivity) {
    if((progressDialog == null) && (!mActivity.isFinishing())){
        progressDialog = ProgressDialog.show(mActivity, "Please wait", "Loading...", true, false);
    }
    if(!mActivity.isFinishing() && !progressDialog.isShowing()){
        progressDialog.show();
    }      
}

Android Fragment显示ProgressDialog崩溃

1 个答案: