Question

目前我正试图通过firebase的详细信息来填充我的活动。我希望首先打开活动，然后在自动填充之前显示微调器，同时获取详细信息。现在发生的事情是它尝试在打开页面之前加载活动细节，从而使UI延迟。这是我的代码

这是在创建

上完成的

waitForDetails();
        ObscuredSharedPreferences mySubscription = ObscuredSharedPreferences.getPrefs(getApplicationContext(), "MySubscription", MODE_PRIVATE);
        final ObscuredSharedPreferences.Editor editorSub = mySubscription.edit();
        String end = mySubscription.getString("EndSub", null);
        String last = mySubscription.getString("LastSub", null);
        endSubView.setText(end);
        lastSubView.setText(last);
        subDiffView.setText(dateConvert()+"  "+getString(R.string.days_manage));
        subDiffView.setGravity(Gravity.CENTER);
        spin.setVisibility(View.GONE);
        layout.setVisibility(View.VISIBLE);

这是waitForDetails方法

    private void waitForDetails(){
  final Handler handler = new Handler();

    final Runnable r = new Runnable() {
        public void run() {
            ObscuredSharedPreferences pref = ObscuredSharedPreferences.getPrefs(getApplicationContext(), "MyPref", MODE_PRIVATE);
            final ObscuredSharedPreferences.Editor editor = pref.edit();
            final String userName = pref.getString("Username", null);
            ObscuredSharedPreferences mySubscription = ObscuredSharedPreferences.getPrefs(getApplicationContext(), "MySubscription", MODE_PRIVATE);
            final ObscuredSharedPreferences.Editor editorSub = mySubscription.edit();
            editorSub.clear();
            editorSub.apply();

            Firebase ref = new Firebase(Config.FIREBASE_URL);
            ref.addValueEventListener(new ValueEventListener() {
                @Override
                public void onDataChange(DataSnapshot snapshot) {

                    User user = snapshot.child(userName).getValue(User.class);

                    String endSub = user.getEndSubscription();
                    String lastSub = user.getLastSubscription();

                    editorSub.clear();
                    editorSub.apply();
                    editorSub.putString("EndSub", endSub);
                    editorSub.putString("LastSub", lastSub);
                    editorSub.apply();



                }

                @Override
                public void onCancelled(FirebaseError firebaseError) {
                    System.out.println("The read failed: " + firebaseError.getMessage());
                }
            });
            handler.postDelayed(this, 1000);
        }
    };

    handler.postDelayed(r, 1000);
}

Answer 1

使用AsyncTask ..

声明AsyncTask，然后只显示AsyncTask的ProgressDialog <label> <input type="radio" ng-model="groups.group" value="1"> Admin </label><br/> <label> <input type="radio" ng-model="groups.group" value="2"> User </label><br/> <label> <input type="radio" ng-model="groups.group" value="3"> Viewer </label><br/>方法。耗费时间和应用程序会冻结诸如从$scope.createUser = function(user, groups){ groups.group = "2"; };中的链接检索数据。检索到的帖子链接是否在asyncTask的onPreExecute()方法中工作，并关闭doInBackground()。 AsyncTask在与主活动不同的线程上运行，因此应用程序不会冻结。

您可以像

一样调用AsyncTask类

onPostExecute()

// ASYNC TASK

ProgressDialog

让我的活动等到活动详情得到

1 个答案: