Qt on Android: pinning, zooming, and rotating Qt Quick event processing

In the previous article "Qt on Android: Qt Quick event processing: Mouse, keyboard, and timer", we introduced common processing of mouse, keyboard, and timer, mouse and keyboard are the most commonly used events on computers. In this section, we

Android4.4 ContentResolver does not update the ContentResolver after the image is invalid and the image is added to the image library is deleted.

Problem Background: The reference link allows you to browse images, scan gallery photos with ContentResolver, and display the photos in the listview in strict chronological order. As shown in: The problem is that 4.2 of mobile phones can be

Swift write iOS 8 Installation + test flappy bird

Swift was a splash of power, and the old birds on Weibo were excited. When we hear this message from Python, JS, and Objective-C, we will be excited for the first time. Class Python syntax. Compatible with C and Obj-C is more efficient than Obj-C.

Android uses canvas to draw various images

Canvas is a canvas. You can use a paint brush to draw any image on it. Principle: Canvas can be regarded as a proxy or interface of the Surface. The image is drawn on the Surface. Canvas encapsulates all painting calls. Using Canvas, The content

[Play to WeChat public platform 10] Text message reply explanation

There are many types of messages that we reply to users. They can be simple text replies, music replies, or text replies. (You must not reply to only one image, but must include text ). Why do I only reply via text in this article? There are

Android Development Environment eclipse + android sdk configuration notes

This development environment is: eclipse + android sdk. There are no special requirements on the sequence of steps described. Steps: 1. Install eclipse 2. Configure jdk 3. Install the android sdk 4. Install ADT and associate it with eclipse and

Android-based 3D video sample code

Author: Mark Liu Download Sample CodeIntroduction Vcppy + ypbfFoaM8L3A + kernel/G1w8rTxrXNvM/xyv2 + kernel + oaM8bGk + kernel + m8/m8/kernel/b7d5NbIvqO/kernel + Kernel signature + signature + y/weight/yo7u1sbe9z/weight +

Quickly build an Android development environment-use ADT Bundle

  1. Build an Android Development Environment To learn more about Android development, we will start to build an Android development environment in Windows. I have found some relevant blog posts for reference. Basically, we need to download and

Android-custom Notification

Android-custom NotificationFor the message in the message bar on June 23, Android enthusiasts know exactly what it is. For example, if we download an application, it may push some messages to our mobile phone at regular intervals, for example, a

Get contact information for Android Development

For mobile phones, there are two types of contacts: SIM card contacts and built-in mobile phone contacts. Generally, SIM card contacts do not contain more information (such as mailing addresses and portraits), but mobile phone built-in contacts can

Experience in setting timed reminders for android alarms

First, you need an entry before setting the reminder, for example, in The onclick event. In android, it is actually very simple to use the alarm clock. You only need to tell the system when you want to be reminded, and then need a broadcast receiver

The default factory time set for Android 2.3 is invalid.

   In Android 2.3, after the default time is written in the. h file, the time may not be restored after the factory settings are restored. If you want to restore the instance to an initial value after it is started for the first time after download

Implementation of Android music player (I) Implementation of custom buttons

The Android system provides the MediaPlayer control, which enables you to play audio. From learning Android, when I was watching the tutorial, I thought that I would like to make a music player myself, because a complete music player has many

Android development and learning-Camera functions in Camera mode (2)-Camera function configuration

The simple project we implemented in the previous article, and now we continue to add features for this camera. First, in Camera, we can perform simple control over the Camera. When we need to configure more functions, we need to use the Parameters

About android drawer, navigation drawer

A side pane is needed for a project that I recently worked on. I noticed this stuff, but it was only released in December, with less information in China. I can't find anything. Let's look at an example from the official website. We can see from the

Android 02 Started Service -- Started Service

  Body     1 Started Service Introduction Started Service, that is, the Started Service. It is one of two common services, and the other is Bound Service. Started Service is often used to perform background operations of a process, such as file

Implementation of flashlight for Android

There are two main steps: 1. Enable and disable the flashlight.   Camera camera = Camera. open (); Parameters mParameters = camera. getParameters (); mParameters. setFlashMode (Camera. parameters. FLASH_MODE_TORCH); // open Camera. parameters. FLASH_

Interaction Designer: Interaction Design Method and thinking process (1)

I am often asked: "What do you do ?""Interaction Designer .""What is interaction design ?"I am very embarrassed to explain a bunch of: "! @ # ¥ % ......."The other party is even more confused: "that .... Is it the visual design of web pages ?".......

Discussion on user education in mobile device Product Design

With the upgrade of mobile phone hardware, the application functions are gradually enriched, and the interaction process is becoming more complex. Therefore, whether a mobile phone application can make users shine, in addition to its successful

Use jQuery Mobile to implement the Mobile news browser (Chapter 3) (1)

In the first two articles in this tutorial, I will introduce how to design a Mobile news browser using the jQuery Mobile framework, which implements a WEB-based news browser, in the last article of this tutorial, we will explain how to migrate the

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