Die Anleitung zu Android Chip und ChipGroup

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1- Chip

Chips sind neue Komponenten, die zuerst in Android SDK Version 28 eingeführt wurden. Sie sind im Grunde die Interfaceskomponenten, die aus Symbolen und Text bestehen, die in einem rechteckigen Hintergrund mit abgerundeten Ecken platziert werden.
Um das Chip-Objekt im Projekt zu verwenden, müssen Sie es installieren.
Nachdem sie erfolgreich installiert wurde, wird eine Bibliothek mit Chips in der Datei build.gradle (Modul app) deklariert.
implementation 'com.google.android.material:material:1.1.0'
 
Die Code XML eines einfachen  Chip :
Chip Sample
<!-- IMPORTANT: android:theme is required -->

<com.google.android.material.chip.Chip
    android:id="@+id/chip1"
    style="@style/Widget.MaterialComponents.Chip.Action"

    android:theme="@style/Theme.MaterialComponents.Light"

    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Chip Action" />

theme attribute

Das android:theme-Attribut ist für einen Chip erforderlich. Ohne dieses Attribut funktioniert die gesamte Anwendung nicht, und sie benachrichtigt Sie auch nicht darüber. Ich war überrascht, als ich zum ersten Mal einen Chip benutzte.
  • android:theme="@style/Theme.MaterialComponents"
  • android:theme="@style/Theme.MaterialComponents.Light"
  • android:theme="@style/Theme.MaterialComponents.***"

style attribute:

Das style-Attribut hat 4 Werte, mit denen Sie den Typ von Chips angeben können:
  • @style/Widget.MaterialComponents.Chip.Action (Default)
  • @style/Widget.MaterialComponents.Chip.Entry
  • @style/Widget.MaterialComponents.Chip.Choice
  • @style/Widget.MaterialComponents.Chip.Filter

Style Default

Das Style-Attribut ist optional, und der Standardwert wird als "@style/Widget.MaterialComponents.Chip.Action" bezeichnet.
Chip Default Sample
<?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">

    <com.google.android.material.chip.Chip
        android:id="@+id/chip1"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="50dp"
        android:text="Chip Default"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip2"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Default + (Checkable)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip1" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip3"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Default + (Checkable, Close Icon Visible)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:closeIconVisible="true"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip2" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip4"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="32dp"
        android:checkable="true"
        android:text="Chip Default + (Icon)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:chipIcon="@drawable/my_icon"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip3" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip5"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Default + (Icon, Checkable)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:chipIcon="@drawable/my_icon"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip4" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip6"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Default + (Icon, Checkable, Close Icon Visible)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:chipIcon="@drawable/my_icon"
        app:closeIconVisible="true"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip5" />

</androidx.constraintlayout.widget.ConstraintLayout>

style="@style/Widget.MaterialComponents.Chip.Action"

Das ist der Standardwert von style.

style="@style/Widget.MaterialComponents.Chip.Entry"

Chip Entry = Chip Default + Close Icon + Checkable
Chip Entry Sample
<?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">

    <com.google.android.material.chip.Chip
        android:id="@+id/chip1"
        style="@style/Widget.MaterialComponents.Chip.Entry"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="50dp"
        android:text="Chip Entry"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip2"
        style="@style/Widget.MaterialComponents.Chip.Entry"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Entry + (Checkable)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip1" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip3"
        style="@style/Widget.MaterialComponents.Chip.Entry"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Entry + (Checkable, Close Icon Visible)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:closeIconVisible="true"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip2" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip4"
        style="@style/Widget.MaterialComponents.Chip.Entry"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="32dp"
        android:checkable="true"
        android:text="Chip Entry + (Icon)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:chipIcon="@drawable/my_icon"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip3" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip5"
        style="@style/Widget.MaterialComponents.Chip.Entry"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Entry + (Icon, Checkable)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:chipIcon="@drawable/my_icon"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip4" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip6"
        style="@style/Widget.MaterialComponents.Chip.Entry"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Entry + (Icon, Checkable, Close Icon Visible)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:chipIcon="@drawable/my_icon"
        app:closeIconVisible="true"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip5" />

</androidx.constraintlayout.widget.ConstraintLayout>

style="@style/Widget.MaterialComponents.Chip.Choice"

Here sind die Eigenschaften von Chip Choice:
  • Wenn Chip Choice gewählt (selected) wird, wird sein Hintergrund dunkler.
  • Kein Symbol check wird links angezeigt, auch wenn Sie checkable=true festlegen.
  • Icon - wird nicht anzgezeigt auch wenn Sie den Wert für es festlegen.
Chip Choice Sample
<?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">

    <com.google.android.material.chip.Chip
        android:id="@+id/chip1"
        style="@style/Widget.MaterialComponents.Chip.Choice"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="50dp"
        android:text="Chip Choice"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip2"
        style="@style/Widget.MaterialComponents.Chip.Choice"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Choice + (Checkable)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip1" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip3"
        style="@style/Widget.MaterialComponents.Chip.Choice"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Choice + (Checkable, Close Icon Visible)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:closeIconVisible="true"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip2" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip4"
        style="@style/Widget.MaterialComponents.Chip.Choice"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="32dp"
        android:checkable="true"
        android:text="Chip Choice + (Icon)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:chipIcon="@drawable/my_icon"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip3" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip5"
        style="@style/Widget.MaterialComponents.Chip.Choice"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Choice + (Icon, Checkable)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:chipIcon="@drawable/my_icon"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip4" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip6"
        style="@style/Widget.MaterialComponents.Chip.Choice"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Choice + (Icon, Checkable, Close Icon Visible)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:chipIcon="@drawable/my_icon"
        app:closeIconVisible="true"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip5" />

</androidx.constraintlayout.widget.ConstraintLayout>

style="@style/Widget.MaterialComponents.Chip.Filter"

Die Eigenschaften von Chip Filter:
  • Chip Filter = Chip Default + Checkable
  • Icon - wird nicht angezeigt auch wenn Sie den Wert für es festlegen.
Chip Filter Sample
<?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">

    <com.google.android.material.chip.Chip
        android:id="@+id/chip1"
        style="@style/Widget.MaterialComponents.Chip.Filter"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="50dp"
        android:text="Chip Filter"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip2"
        style="@style/Widget.MaterialComponents.Chip.Filter"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Filter + (Checkable)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip1" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip3"
        style="@style/Widget.MaterialComponents.Chip.Filter"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Filter + (Checkable, Close Icon Visible)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:closeIconVisible="true"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip2" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip4"
        style="@style/Widget.MaterialComponents.Chip.Filter"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="32dp"
        android:checkable="true"
        android:text="Chip Filter + (Icon)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:chipIcon="@drawable/my_icon"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip3" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip5"
        style="@style/Widget.MaterialComponents.Chip.Filter"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Filter + (Icon, Checkable)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:chipIcon="@drawable/my_icon"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip4" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip6"
        style="@style/Widget.MaterialComponents.Chip.Filter"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="16dp"
        android:checkable="true"
        android:text="Chip Filter + (Icon, Checkable, Close Icon Visible)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:chipIcon="@drawable/my_icon"
        app:closeIconVisible="true"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip5" />

</androidx.constraintlayout.widget.ConstraintLayout>

2- Chip Theme

Das Attribut android:theme ist für Chip erforderlich. Ihre Anwendung kann nicht funktionieren wenn  Chip dieses Attribut nicht hat oder wenn Sie einen ungültigen Wert für es festlegen.
Die möglichen Werten sind:
  • android:theme="@style/Theme.MaterialComponents.Light"
  • android:theme="@style/Theme.MaterialComponents.Bridge"
  • android:theme="@style/Theme.MaterialComponents.DayNight"
  • .....
android:theme="@style/Theme.MaterialComponents.Light"
android:theme="@style/Theme.MaterialComponents.Bridge"

3- Chip Listener

Es gibt viele Ereignisse im Zusammenhang mit Chips, aber im Grunde gibt es 3 gemeinsame Ereignisse wie folgt:
  1. chip.setOnClickListener(View.OnClickListener)
  2. chip.setOnCloseIconClickListener(View.OnClickListener)
  3. chip.setOnCheckedChangeListener(CompoundButton.OnCheckedChangeListener)
main_activity.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">

    <com.google.android.material.chip.Chip
        android:id="@+id/chip_action"
        style="@style/Widget.MaterialComponents.Chip.Action"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:clickable="true"
        android:text="Chip Action"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip_choice"
        style="@style/Widget.MaterialComponents.Chip.Choice"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:text="Chip Choice"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip_action" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip_filter"
        style="@style/Widget.MaterialComponents.Chip.Filter"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:text="Chip Filter"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip_choice" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip_entry"
        style="@style/Widget.MaterialComponents.Chip.Entry"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:text="Chip Entry"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip_filter" />

    <com.google.android.material.chip.Chip
        android:id="@+id/chip_custom"
        android:layout_width="0dp"
        android:layout_height="48dp"
        android:layout_marginStart="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="16dp"
        android:layout_marginRight="16dp"
        android:checkable="true"
        android:text="Chip Default + (Checkable, Close Icon Visible)"
        android:theme="@style/Theme.MaterialComponents.Light"
        app:closeIconVisible="true"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip_entry" />

    <Button
        android:id="@+id/button_clear"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:text="Clear Log"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/chip_custom" />

    <EditText
        android:id="@+id/editText_log"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:layout_marginBottom="8dp"
        android:background="#F8EFEF"
        android:ems="10"
        android:gravity="top|left"
        android:inputType="textMultiLine"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/button_clear" />

</androidx.constraintlayout.widget.ConstraintLayout>
MainActivity.java
package org.o7planning.androidchipdemo;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.EditText;

import com.google.android.material.chip.Chip;

public class MainActivity extends AppCompatActivity  {

    private Chip chipAction;
    private Chip chipChoice;
    private Chip chipEntry;
    private Chip chipFilter;
    private Chip chipCustom;

    private EditText editTextLog;
    private Button buttonClear;

    private View.OnClickListener clickListener;
    private View.OnClickListener closeIconClickListener;
    private CompoundButton.OnCheckedChangeListener checkedChangeListener;

    private static final String LOG_TAG = "AndroidChipDemo";


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        this.chipAction = (Chip) this.findViewById(R.id.chip_action);
        this.chipChoice = (Chip) this.findViewById(R.id.chip_choice);
        this.chipEntry = (Chip) this.findViewById(R.id.chip_entry);
        this.chipFilter = (Chip) this.findViewById(R.id.chip_filter);
        this.chipCustom = (Chip) this.findViewById(R.id.chip_custom);
        this.editTextLog = (EditText) this.findViewById(R.id.editText_log);
        this.buttonClear = (Button) this.findViewById(R.id.button_clear);

        //

        this.clickListener= new ClickListenerImpl();
        this.closeIconClickListener = new CloseIconClickListenerImpl();
        this.checkedChangeListener = new CheckedChangeListenerImpl();

        //
        this.chipAction.setOnClickListener( clickListener);
        this.chipAction.setOnCloseIconClickListener(closeIconClickListener);
        this.chipAction.setOnCheckedChangeListener(checkedChangeListener);
        //
        this.chipChoice.setOnClickListener( clickListener);
        this.chipChoice.setOnCloseIconClickListener(closeIconClickListener);
        this.chipChoice.setOnCheckedChangeListener(checkedChangeListener);
        //
        this.chipEntry.setOnClickListener( clickListener);
        this.chipEntry.setOnCloseIconClickListener(closeIconClickListener);
        this.chipEntry.setOnCheckedChangeListener(checkedChangeListener);
        //
        this.chipFilter.setOnClickListener( clickListener);
        this.chipFilter.setOnCloseIconClickListener(closeIconClickListener);
        this.chipFilter.setOnCheckedChangeListener(checkedChangeListener);
        //
        this.chipCustom.setOnClickListener( clickListener);
        this.chipCustom.setOnCloseIconClickListener(closeIconClickListener);
        this.chipCustom.setOnCheckedChangeListener(checkedChangeListener);
        //
        this.buttonClear.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                editTextLog.setText("");
            }
        });
    }

    private void appendLog(String text)  {
        this.editTextLog.append(text) ;
        this.editTextLog.append("\n");
        Log.i(LOG_TAG, text);
    }

    class  ClickListenerImpl implements View.OnClickListener {

        @Override
        public void onClick(View v) {
            appendLog("Clicked");
        }
    }


    class CloseIconClickListenerImpl implements View.OnClickListener {

        @Override
        public void onClick(View v) {
            appendLog("Close Icon Clicked");
        }
    }

    class CheckedChangeListenerImpl implements  CompoundButton.OnCheckedChangeListener {

        @Override
        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
            appendLog("Checked Changed! isChecked? " + isChecked);
        }
    }
}

 

4- ChipGroup

ChipGroup wird benutzt um mehrere Chip zu enthalten. Standardmäßig werden Chips nach vielen Zeilen sortiert, wenn eine Zeile nicht alle Chips enthalten kann..
Sie können es jedoch so einstellen, dass die Chips in einer einzigen Zeile angezeigt werden.
<com.google.android.material.chip.ChipGroup
   app:singleLine="true"  
   ...>
   
</com.google.android.material.chip.ChipGroup>
ChipGroup kann auch als RadioGroup arbeiten, was bedeutet, dass, wenn einer der Chips als checked festgelegt wird, wird der Rest der Chips unchecked sein.
<com.google.android.material.chip.ChipGroup
   app:singleSelection="true"
   ...>
   
</com.google.android.material.chip.ChipGroup>

5- Das Beispiel mit Chip und ChipGroup

Unten ist das einige Beispiele  Chip & ChipGroup , dafür Sie interessiert sind:

View more Tutorials: