From: http://blog.163.com/dsp_lnint/blog/static/1031674342008111695620377/#comment=fks_082065085095085071086080084095085086082066082081082064080
Push-pull output: outputs high and low levels and connects to digital devices. A push-pull structure generally means that two transistors are controlled by two complementary signals, which always end when one transistor is turned on.
Open-drain output: the output
Solve the problem that the Vue uses mint-ui loadmore to implement pull-up loading and pull-down refresh. After a page is loaded using multiple pull-up operations, mint-uiloadmore
Problems:
This page is associated with two tabs. The four parts require the pull-up and pull-dow
pull and the pull-down is one for the pull current, one for the sink currentIn general, the sink current is largeThat is, the capacity of the current-sinking drive is stronger}Third, the choice of pull-up resistor resistance principle includes:1, from the power consumption and the capacity of the chip sink should be l
Reprint Address: http://blog.csdn.net/bailyzheng/article/details/8071864about pull-up input, down input, push-pull output, open-drain output, multiplexed open-drain output, multiplexed push-pull output, and floating-space input, analog input differencesRecently on the Internet to see some people on the STM32 of eight ways to explain, said a lot, and finally read
using Pulltorefresh to implement pull-down refreshes and pull-up loadsCategory: Android2013-12-20 15:51 78158 people read review (US) Collection report Android drop-down refresh pull-up load PulltorefreshPulltorefresh is a very good set of pull-down refresh libraries tha
publicvoidonrefresh (pulltorefreshbase
if (!isrefreshing) {
isrefreshing=true;
updatelist (true);
}ELSENBSP;{NBSP;NBSP;
mexpandlist.onrefreshcomplete ();
}
}NBSP;NBSP;
@Override public void Onrefresh (pulltorefreshbaseIn general, we will open another thread to get the data, so here will add a judgment, if already in the acquisition of data, Onrefreshcomplete (), that is, the drop-down, or to open a new thread to fetch data, take
Android SwipeRefreshLayout pull-down refresh and pull-up loading + sliding Deletion
SwipeRefreshLayout-the pull-down refresh control officially proposed by Google, which is widely used in various apps. I always wanted to achieve a sliding deletion effect similar to QQ, which not only supports pull-down refresh, but als
Android Development notes -- pull-down refresh and pull-up loading for open-source components PullToRefresh (one-minute processing, super simple) and Android pulltorefresh
Preface
Previously, when we implemented ListView pull-down refresh and pull-up to load data, we inherit
positive pull-down refresh will be finished.
After we finish the pull-down refresh process, we will talk about pulling and loading more.
In a lot of listview list data, when we pull to the bottom, a circular progress bar and a "loading more... "It is mainly used to load network data by page. When we access network
Onrefresh ()[Java]View Plaincopyprint?
@Override
publicvoidonrefresh (pulltorefreshbase
if (!isrefreshing) {
isrefreshing=true;
updatelist (true);
}ELSENBSP;{NBSP;NBSP;
mexpandlist.onrefreshcomplete ();
}
}NBSP;NBSP;
@Override public void Onrefresh (pulltorefreshbaseIn general, we will open another thread to get the data, so here will add a judgment, if already in the acquisition of data, Onrefreshcomplete (), that is,
, pull-up loadingIf you don't want to take the time to write a pull-up load yourself, try the pull-up effect from Pulltorefresh!The Pulltorefresh itself supports pull-up refreshes and pull-up refreshes, so we just need to change t
The so-called high level is referred to as the low level. Pull up, is through a resistor to connect the signal to the power supply, usually used for clock signal data signal. A drop-down is a signal grounded by a resistor and is generally used to protect the signal. This is designed according to the needs of the circuit, the main purpose is to prevent interference, increase the stability of the circuit. If there is no
Pull-up and pull-down refresh
I. Pull up and refresh 1. Why do I need to pull up and refresh? To read some old (more) data, you need to pull and refresh to load more data. 2. Pull and
Topics in this section (Network section-dropdown/pull-up refresh)
Source address at the end of the article
Achieve resultsDrop-down Refresh dataPull up to load more data
Objective
After 10 minutes to build the mainstream framework _ Simple Network part (OC) Introduction, I believe you have achieved the basic Internet access to data, but only rough access to fixed data, let us imp
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