android - 如何在应用程序android中的任何 Activity 之上显示警报对话框

Question

我想显示一个警告对话框。这个警报对话框是在一个 Activity 中创建的。但问题是当我从服务器获得一些响应时，我想在应用程序中的任何 Activity 之上显示此对话框

Answer 1

是的，我找到了解决方案....

首先，我创建了一个用于显示警报对话框的类。在收到来自服务器的响应后调用方法通过传递应用程序上下文来显示警报对话框

package io.omoto.omotokairaliapp.Utls;

import android.content.Context;
import android.view.WindowManager;

import com.gitonway.lee.niftymodaldialogeffects.lib.NiftyDialogBuilder;

import io.omoto.omotokairaliapp.Constants.Constants;

/**
 * Created by ${venkie} on ${28/1/16}.
 */
public class DisplayRegisteredMessage {

    Context context;
    private NiftyDialogBuilder dialogBuilder;


    public DisplayRegisteredMessage(Context context) {

        this.context = context;
    }

    public void displayMessage() {

        if (Constants.FLAG == 1) {
            Constants.FLAG = 0;

            dialogBuilder = NiftyDialogBuilder.getInstance(context);
            dialogBuilder
                    .withTitle("Response is already registered")
                    .withMessage("For this Customer we have already taken response Sorry!!");
            dialogBuilder.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
            dialogBuilder.show();

        } else {


        }
    }


}

上面的代码显示警告对话框

@Override
            public void onSuccess(int statusCode, Header[] headers, JSONObject response) {
                super.onSuccess(statusCode, headers, response);
                Log.e("response page", response.toString());
                try {
                    if (response.getString(Constants.STATUS).equalsIgnoreCase("SUCCESS"))
                        p7.deleterecord(p7b.getFlowid());
                        p7.deleteRows();

                    Constants.FLAG = 1;
                    DisplayRegisteredMessage displayRegisteredMessage = new DisplayRegisteredMessage(mContext);
                    displayRegisteredMessage.displayMessage();


                } catch (JSONException e) {
                    e.printStackTrace();
                }
                Log.e("Page 6", p7b.getFlowid());
            }