gravity

In Android I'm using a single line edittext with gravity set to center. In the Emulator this works great both the hint and a blinking cursor shows up. When testing on device (Xperia X10) neither the hint text nor the blinking cursor shows up. The blinking cursor only shows if I enter some text into the edittext. This is my edittext, can anyone see if something is missing? <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:gravity="center" android:layout_gravity="center" > <EditText android:layout_width="fill_parent" android:layout_height="wrap_content

起因 由于业务的特点有时候数据会需要复杂的查询逻辑才能得到，由于数据库本身对于复杂查询的支持不足，那么把数据同步到能力中间件就成了常用的解决方案，而同步到Elasticsearch就是其中一种。 方案选型 我们使用的数据源是MySql，选择同步到ES，想法是通过订阅Binlog实现，减少侵入性。 解决方案其实也有一些，比如： go-mysql-elasticsearch 、 canal 、 gravity 然而这些方案通常只支持1对1建索引，也就是一张表一个索引，而数据表中的1对1和1对多关系则无法在索引中体体现。而业务中又常需要这种关系。因此综合考虑还是基于gravity做个插件。 gravity是摩拜开源的数据同步中间件，目前数据源支持：MySql和Mongo，TiDB和PostgreSQL在开发中，同步目标支持：MySQL/TiDB和Kafka，Elasticsearch还在bate阶段，并且支持6. EsModel同步插件 项目地址： gravity 欢迎star ：）。 同步策略 支持主表及一对一和一对多字表的同步，可以同步到一个索引结构中。 一对一关系支持以平铺或子对象形式同步。 支持ES版本：6、7 例如有四张表： student 、 student_class 、 student_detail 、 student_parent 其中 student 是学生表（主表）

Given an Accelerometer with 9 DOF (Accelerometer, Gyroscope and Magnetometer) I want to remove/compensate the effect of the gravity in accelerometer reading (Accelerometer can rotate freely). The sensor gives the orientation in quaternion representation relative to a (magnetic)north, west and up reference frame. I found this http://www.varesano.net/blog/fabio/simple-gravity-compensation-9-dom-imus but couldn't understand the basis for the given equation. How could I achieve this given above information? You need to rotate the accelerometer reading by the quaternion into the Earth frame of

package com.ScrollListView; import android.app.ListActivity; import android.os.Bundle; import android.view.Gravity; import android.view.View; import android.view.ViewGroup; import android.widget.AbsListView; import android.widget.BaseAdapter; import android.widget.LinearLayout; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.AbsListView.OnScrollListener; public class EndLessActivity extends ListActivity implements OnScrollListener { Aleph0 adapter = new Aleph0(); int mProgressStatus = 0 ; ProgressBar progressBar; protected void onCreate(Bundle

I can use android:gravity="bottom|center_horizontal" in xml on a textview to get my desired results, but I need to do this programmatically. My textview is inside a tablerow if that matters in a relativelayout . I have tried: LayoutParams layoutParams = new TableRow.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL); labelTV.setLayoutParams(layoutParams); But if I understand correctly, that would apply it to the tablerow , not the textview? labelTV.setGravity(Gravity.CENTER | Gravity.BOTTOM); Kotlin version (thanks to Thommy) labelTV

I am risking writing a duplicate question, but as I was researching the answer to another SO question , I realized that I couldn't find a simple question and answer that included setting both gravity and layout_gravity of a LinearLayout . Also, I was confused as to the difference between them when talking about a ViewGroup rather than just a view. I am answering my question below. Here are some of the other questions I viewed: How to set gravity to layout programmatically? Set gravity for LinearLayout programmatically android - setting LayoutParams programmatically LayoutParams gravity not

I am trying to write a PHP function that will calculate the center of gravity of a polygon. I've looked at the other similar questions but I can't seem to find a solution to this. My problem is that I need to be able to calculate the center of gravity for both regular and irregular polygons and even self intersecting polygons. Is that possible? I've also read that: http://paulbourke.net/geometry/polyarea/ But this is restricted to non self intersecting polygons. How can I do this? Can you point me to the right direction? The center of gravity (also known as "center of mass" or "centroid" can