This article covers basic implementation of common palettes giving basic idea of android palettes with a sample project.Before getting started, let us go through some of topics like :What is Android Studio palette?Steps to create palette.

本文介绍了基本实现共同调色板给人的Android 调色板的基本思路与样本project.Before起步，让我们通过一些类似的主题： 什么是Android Studio中的调色板的步骤来创建调色板？

What is Android Studio palette?The Android Studio palette contains various different views that we can drag onto the “design editor” representing the display of an Android device.. It is the point of interaction between App and the user. Android studio palette contains Text, Button, Widgets, layout, container etc.

什么是Android Studio调色板？ Android Studio面板包含各种不同的视图，我们可以将它们拖到代表Android设备显示的“设计编辑器”上。这是App与用户之间进行交互的地方。 Android Studio调色板包含文本，按钮，小部件，布局，容器等。

These views are divided into categories and are all covered in the following sections.

这些视图分为几类，并在以下各节中进行了介绍。

TextContains predefined text views for different types of text inputs such as label (TextView), password, date, time, number, and e-mail.

文本包含用于不同类型的文本输入(如标签(TextView)，密码，日期，时间，数字和电子邮件)的预定义文本视图。

ButtonRepresents a push widget that registers when the screen is touched within its bounds. some of eg. are ToggleButton, CheckBox, RadioButton, switch, imageButton.

Button表示一个推小部件，当在其范围内触摸屏幕时会注册。 一些例如。 是ToggleButton，CheckBox，RadioButton，switch，imageButton。

LayoutsA layout defines the visual structure for a user interface, such as the UI for an activity or app widget. eg. ConstraintLayout, Linear Layout, Relative Layout, GridLayout, FrameLayout, TableLayout.

布局 布局定义了用户界面的视觉结构，例如活动或应用程序小部件的UI。 例如。 ConstraintLayout，Linear Layout，Relative Layout，GridLayout，FrameLayout，TableLayout。

WidgetsWidgets are an essential aspect of home screen customisation,eg. ProgressBar, SeekBar, RatingBar, ImageView, VideoView etc.

小 部件 小 部件是主屏幕自定义的基本方面，例如。 ProgressBar，SeekBar，RatingBar，ImageView，VideoView等。

调色板创建步骤： (Palette Creation Steps :)

1. create layout.
   创建布局。
2. In XML define its properties.
   在XML中定义其属性。
3. create class for the performing actions.
   为执行动作创建类。

Step 1: Creating a very simple layout

步骤1：创建一个非常简单的布局

You can either create layout from XML or simply drag and drop from design panel.

您可以从XML创建布局，也可以直接从设计面板拖放。

Step 2: create an XML that defines it properties

步骤2：创建定义其属性的XML

<?xml version="1.0" encoding="utf-8"?><androidx.constraintlayout.widget.ConstraintLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity">    <EditText        android:id="@+id/editText1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginStart="8dp"        android:layout_marginLeft="8dp"        android:layout_marginTop="68dp"        android:layout_marginEnd="8dp"        android:layout_marginRight="8dp"        android:ems="10"        android:inputType="number"        android:hint="Enter First No. "        android:textAlignment="center"        app:layout_constraintEnd_toEndOf="parent"        app:layout_constraintHorizontal_bias="0.502"        app:layout_constraintStart_toStartOf="parent"        app:layout_constraintTop_toTopOf="parent"        android:gravity="center_horizontal" />    <EditText        android:id="@+id/editText2"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginStart="8dp"        android:layout_marginLeft="8dp"        android:layout_marginTop="44dp"        android:layout_marginEnd="8dp"        android:layout_marginRight="8dp"        android:ems="10"        android:inputType="number"        android:hint="Enter Second No. "        android:textAlignment="center"        app:layout_constraintEnd_toEndOf="parent"        app:layout_constraintStart_toStartOf="parent"        app:layout_constraintTop_toBottomOf="@+id/editText1"        android:gravity="center_horizontal" />    <Button        android:id="@+id/sumButton"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginStart="8dp"        android:layout_marginLeft="8dp"        android:layout_marginTop="48dp"        android:layout_marginEnd="8dp"        android:layout_marginRight="8dp"        android:text="Sum"        app:layout_constraintEnd_toEndOf="parent"        app:layout_constraintHorizontal_bias="0.498"        app:layout_constraintStart_toStartOf="parent"        app:layout_constraintTop_toBottomOf="@+id/editText2" />    <TextView        android:id="@+id/resultTextView"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_marginStart="8dp"        android:layout_marginLeft="8dp"        android:layout_marginTop="36dp"        android:layout_marginEnd="8dp"        android:layout_marginRight="8dp"        android:text="Sum = 0"        android:textSize="24sp"        app:layout_constraintEnd_toEndOf="parent"        app:layout_constraintStart_toStartOf="parent"        app:layout_constraintTop_toBottomOf="@+id/sumButton" /></androidx.constraintlayout.widget.ConstraintLayout>

Step 3: create class for the performing actions.

步骤3：为执行动作创建类。

package com.example.demoapp;import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.TextView;public class MainActivity extends AppCompatActivity {    EditText editText1, editText2;    Button sumButton;    TextView resultTextView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        editText1= (EditText)findViewById(R.id.editText1);        editText2= (EditText)findViewById(R.id.editText2);        //editText2.setText("5");        sumButton=(Button)findViewById(R.id.sumButton);        resultTextView=(TextView)findViewById(R.id.resultTextView);        sumButton.setOnClickListener(new View.OnClickListener(){            @Override            public void onClick(View v) {                int num1=Integer.parseInt(editText1.getText().toString());                int num2=Integer.parseInt(editText2.getText().toString());                int sum=num1+num2;                resultTextView.setText("Result : "+sum);            }        });    }}

App would look like this

应用看起来像这样

That’s it. Now you have successfully built an Android app!You have implemented a Palette in your app :)

而已。 现在您已经成功构建了一个Android应用程序！您已经在应用程序中实现了Palette :)

Let’s take it to the next level in upcoming article.

让我们在下一篇文章中将其带入一个新的水平。

Thanks for reading.

谢谢阅读。