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getParcelableExtra always null on Pending Intent, but not Intent

由 倾然丶 夕夏残阳落幕 提交于 2019-12-12 23:02:36
问题 I'm new to Java let alone Android development. I have no coding background, but thought I'd start with something 'simple' like an alarm clock. So now I'm writing an alarm clock, and I want to update the alarms to be inactive if they aren't repeating after they go off. When I pass a parcelable AlarmClass (my alarm object) to the alarm set screen with an intent, it passes just fine. When I pass the same AlarmClass to an intent, and put it in a PendingIntent in the Alarm Manager and then try to

What means in Dart static type and why it differs with runtime type?

由 ﹥＞﹥吖頭↗ 提交于 2019-12-12 20:58:00
问题 In Dart exists two kind of types. Runtime type Static type Here is proof in Dart language specification: The static type of null is bottom. Runtime type of null is Null Static type of null is bottom This mean that objects in Dart can have two kind of types. One real type that called static and one virtual type that called runtime . That is, runtime type of null is not a bottom but a regular class Null . class Null { factory Null._uninstantiable() { throw new UnsupportedError('class Null

Queue.Poll() is return null but Queue.size() >0 in java queue

由 二次信任 提交于 2019-12-12 20:54:38
问题 My code: while( Memo.qRcv.size() > 0) { MessageReceived msg=Memo.qRcv.poll(); ... } Then I got 2014-03-01 11:09:36 DEBUG [Thread-16] (threadQueueSendtoUser.java:163) - Memo.qRcv = null, size = 41590 回答1: I found solution by using ConcurrentLinkedQueue http://www.javacodex.com/Concurrency/ConcurrentLinkedQueue-Example Problem here is I used 2 thread to process a Queue, should not use normal queue. I will feedback if any problem Thank you all 来源： https://stackoverflow.com/questions/22112580

Object doesn't take value

由 Deadly 提交于 2019-12-12 20:45:00
问题 I am sorry about the title of this post, but I've no idea how to describe my problem. So, I've got the following really simple code: dynamic obj = new myClass(); // In my case it is a COM object int FileCount = 0; FileCount = obj.SomeMethod(); But at runtime I get something like this: Whats going on there? Why isn't Filecount = 0 ? Why is it null? 回答1: Are you in Release build?. If FileCount is not used somewhere else the variable might be optimized out by the compiler. Try doing that in

how to read this.props in a function

由 蓝咒 提交于 2019-12-12 20:25:03
问题 I'm new to reactjs with ES6, the problem is that I can not read the 'this.props.productId' property inside the onDelete () function, this is the error: DeleteProductComponent.js:15 Uncaught TypeError: Cannot read property 'props' of null can anyone give me an optimum solution or tell me what I'm doing wrong? Thank you import React, { Component } from 'react'; class DeleteProductComponent extends Component { componentDidMount() { $('.page-header h1').text('Delete Product'); } onDelete(){ var

mysql_close() expects parameter 1 to be resource, null given

由 无人久伴 提交于 2019-12-12 19:03:57
问题 The line causing the error is this one... mysql_close($con); Here is the entirety of the code... $con=mysqli_connect("localhost","root","pass","db_name"); // Check connection if (mysqli_connect_errno()) { echo "Failed to connect to MySQL: " . mysqli_connect_error(); } $result = mysqli_query($con,"SELECT * FROM medicos"); while($row = mysqli_fetch_array($result)) { echo '.....'; } mysql_close($con); 回答1: The line mysql_close($con); must be changed to mysqli_close($con); You cannot

“Null” is null or not an object error in IE javascript

由 混江龙づ霸主 提交于 2019-12-12 18:47:37
问题 The following code executes fine in Firefox and Chrome, but gives an error: 'null' is null or not an object when executed in Internet Explorer. if (xmlhttp.responseXML != null) { var xmlDoc = xmlhttp.responseXML.documentElement ; var ResultNodes = xmlDoc.getElementsByTagName ("Result") ; <---- error here if (ResultNodes != null) { (I would have thought the line after the one indicated would be more likely to return the error but the debugger says the run-time error is at the line indicated)

图片或文字水印

由 元气小坏坏 提交于 2019-12-12 18:24:25
【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> package cn.gdpe.photo; import java.awt.AlphaComposite; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.RenderingHints; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileOutputStream; import java.io.OutputStream; import javax.imageio.ImageIO; import javax.swing.ImageIcon; import com.sun.image.codec.jpeg.*; /** * 图片加水印，设置透明度 * @author LY * 创建日期：2016年09月14日 22:45:17 */ public class ImageMarkLogoByIcon { /** * @param args */ public static void

Android mysterious null pointer exception

由 天涯浪子 提交于 2019-12-12 18:06:05
问题 Since I have uploaded my app I have received many java.lang.NullPointerException crash reports. I am struggling to understand the problem as it does not crash on the emulators or the physical devices i have personally tested. Below is an example of one of the reports: java.lang.IllegalStateException: Could not execute method of the activity at android.view.View$1.onClick(View.java:2072) at android.view.View.performClick(View.java:2408) at android.view.View$PerformClick.run(View.java:8817) at

parent.document.getElementById(“…”) is null or not an object in IE7

由 空扰寡人 提交于 2019-12-12 15:28:53
问题 I have done some research, but as a JavaScript novice, I can't seem to get anything to work for my specific case: I have an iframe in a page, and in that iframe's document, I have the following code: function fun(){ var slideTitle = api.getField('title'); parent.document.getElementById("slidecaptionOoH").innerHTML = slideTitle; In the parent document I have: <h4 id="slidecaptionOoH"></h4> I've tried putting a comment in between the tags, but I still get the error in IE7. The page displays
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