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The temporal Query function is to retrieve the time information stored in the element table through the time range set by the user, so as to obtain the operation of elements in a specific temporal range. In this case, taking typhoon data as an example, the temporal Query conditions are constructed through the set time range, th ...

Reference link https://blog.csdn.net/AmStrong_/article/details/78864613 Immersive status bar research is to extend the layout content to the status bar, so that the status bar can be covered or hidden on the layout. First of all, to modify the android version of the status bar at least above 4.4, and in 4.4, it is not allowed ...

Android custom View usually needs to go through the process of measure, layout and draw. If you haven't understood the process of measure, you can take a look at it first This article. 1, Function of Layout: calculate the position of view, that is, the position of Left, Top, Right and Bottom 2, Layout process: similar to mea ...

Some so files are too large, which can be copied from the mobile memory or sd card to the running application. Interfaces are all packed in before. You can also do so update, that is, delete the previous copy, and then do not repackage apk to copy in again. 1. Encapsulated class package com.rtcmdemo.until; import android.con ...

In order to realize the function of generating channel package by one key in java, we need to make preparations in advance. There are about three points as follows 1. Put the channel number that needs to be generated in the excel file when it is ready 2. You need to download two jar packages, commons-compress-1.16.1.jar and jxl. ...

I need to use GPS programmatically to get the current position. How can I achieve it? #1 building I created a small application with step-by-step instructions to get the GPS coordinates of the current location. Complete sample source code On Android " Get current location coordinate, city name . See how it works: What w ...

Problem Abstract: no photos can be obtained after photos are taken with Xiaomi Huawei mobile phone Scene appears Ordinary camera call, pass in a path in intent, and call this intention. There is no problem in the glory 8X of the test machine. You can get the photos. In Xiaomi system and Huawei's maimang 4, there are no photos on the path. /* ...

Step 1 download Icoont Alibaba vector map After logging in the website, add the required icon to the library as follows: Then download to local. (Note: the compressed package downloaded by my google browser is empty, and it was successfully downloaded by using other browsers.) It has the following contents: Step 2: crea ...

understand First, let's talk about why there is a ContentProvider? When an application wants to access the database of another application, because each application's database file is private and cannot be accessed directly, the accessed application needs an external database content provider, that is, content provider. &l ...

Put the finished product drawing first: The user's registration interface is actually composed of several input boxes (EditText) and TextView. The key point is that the entered phone number and email can be recognized and displayed in the way of hyperlink. After clicking, the corresponding software will be opened. In fact, i ...