Android侦听所有布尔[]元素是否为true

Question

一旦boolean[3]中的所有元素都为真，我想隐藏进展栏。为此，我使用MutableLiveData。现在进展栏立即消失，似乎无需等待所有true。这是我的代码。

左抽屉指针：

                if (drawerItemList.get(pos).getTitle().equals(activity.getResources().getString(R.string.statistics_drawer))) {
                Dialog dialog = new MyDialog(activity, R.layout.statistics);
                ProgressBar progressBar = dialog.findViewById(R.id.bigProgressBar);

                MutableLiveData<boolean[]> listen = new MutableLiveData<>();
                listen.setValue(new boolean[]{false, false, false});
                restModel.getAllUsers(listen.getValue(), dialog.findViewById(R.id.usersRegisteredValue));
                restModel.getUsersOnline(listen.getValue(), dialog.findViewById(R.id.usersOnlineValue));
                restModel.getMaxNumberOfUsersOnline(listen.getValue(), dialog.findViewById(R.id.maxNumberOnlineValue));

                listen.observe((LifecycleOwner)activity, new Observer<boolean[]>() {
                    @Override
                    public void onChanged(boolean[] booleans) {
                        if (Stream.of(booleans).allMatch(val -> true))
                            progressBar.setVisibility(View.GONE);
                    }
                });

                dialog.show();
            }

RestModel：

    public void getAllUsers(final boolean isThreeStatisticsCallSucceeded[], TextView textView) {
    Call<String> result = Api.getClient1Or2().getAllUsers();
    result.enqueue(new Callback<String>() {
        @Override
        public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
            if(response.body() != null) {
                textView.setText(response.body());
                isThreeStatisticsCallSucceeded[0] = true;
            }
        }

        @Override
        public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
            Log.e("getAllUsers failure", t.toString());
            call.clone().enqueue(this);
        }
    });
}

public void getUsersOnline(boolean isThreeStatisticsCallSucceeded[], TextView textView) {
    Call<String> result = Api.getClient1Or2().getUsersOnline();
    result.enqueue(new Callback<String>() {
        @Override
        public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
            if (response.body() != null) {
                textView.setText(response.body());
                isThreeStatisticsCallSucceeded[1] = true;
            }
        }

        @Override
        public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
            Log.e("getUsersOnline failure", t.toString());
            call.clone().enqueue(this);
        }
    });
}


public void getMaxNumberOfUsersOnline(boolean isThreeStatisticsCallSucceeded[], TextView textView) {
    Call<String> result = Api.getClient1Or2().getMaxUsersOnline();
    result.enqueue(new Callback<String>() {
        @Override
        public void onResponse(@NonNull Call<String> call, @NonNull Response<String> response) {
            if (response.body() != null) {
                textView.setText(response.body());
                isThreeStatisticsCallSucceeded[2] = true;
            }
        }

        @Override
        public void onFailure(@NonNull Call<String> call, @NonNull Throwable t) {
            Log.e("getMaxNumberOfUsersOnli", t.toString());
            call.clone().enqueue(this);
        }
    });
}

怎么解决？

Answer 1

这里有两个问题。首先，您无法轻松地将布尔[]转换为流

其他直接方法也不起作用：rrays.stream（布尔值）会给你一个编译器错误，rrays.as列表（布尔值）也会给你一个流

您可以从这个答案中遵循以下方法。您基本上将IntStream转换为Stream

流

第二个问题是如何检查所有元素是否为true。目前您有... allMatch（val-

最后，您的方法应该如下所示：

@Override
    public void onChanged(boolean[] booleans) {
        Stream<Boolean> stream = IntStream.range(0, booleans.length).mapToObj(idx -> booleans[idx]);
        if (stream.allMatch(val -> val))
            progressBar.setVisibility(View.GONE);
        }