动态添加芯片到芯片组

Posted 2023-02-26

【中文标题】动态添加芯片到芯片组

【英文标题】：Dynamically add chips to chipgroup

【发布时间】：2020-09-02 22:42:41

【问题描述】：

我正在尝试将几个芯片动态添加到芯片组中。第一个看起来不错，但其他看起来不正确。但是当我使用 XML 时，它工作正常。

activity_main.xml

<HorizontalScrollView
            android:layout_
            android:layout_
            android:scrollbars="none"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toStartOf="@+id/chips_select"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/textView"
            app:layout_constraintVertical_bias="0.51">
    <com.google.android.material.chip.ChipGroup
                android:id="@+id/chip_group_main"
                android:layout_
                android:layout_
                android:layout_marginStart="8dp"
                android:layout_marginTop="2dp"
                app:chipSpacingHorizontal="4dp">
        <com.google.android.material.chip.Chip
                    style="@style/ChipTextAppearance"
                    android:layout_
                    android:layout_
                    android:text="Hello"
                    app:chipBackgroundColor="@color/colorAccent"
                    app:closeIconEnabled="true" />
        <com.google.android.material.chip.Chip
                    style="@style/ChipTextAppearance"
                    android:layout_
                    android:layout_
                    android:text="World"
                    app:chipBackgroundColor="@color/colorAccent"
                    app:closeIconEnabled="true" />
    </com.google.android.material.chip.ChipGroup>
</HorizontalScrollView>

在 MainActivity.java 中

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

  Chip chip = new Chip(this);
  chip.setText("ABC");
  chip.setChipBackgroundColorResource(R.color.colorAccent);
  chip.setCloseIconVisible(true);
  chip.setTextColor(getResources().getColor(R.color.white));
  chip.setTextAppearance(R.style.ChipTextAppearance);

  Chip chip2 = new Chip(this);
  chip.setText("XYZ");
  chip.setChipBackgroundColorResource(R.color.colorAccent);
  chip.setCloseIconVisible(true);
  chip.setTextColor(getResources().getColor(R.color.white));
  chip.setTextAppearance(R.style.ChipTextAppearance);

  ChipGroup chipGroup = findViewById(R.id.chip_group_main);

  chipGroup.addView(chip);
  chipGroup.addView(chip2);

style.xml

<resources>
    <style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>
    <style name="ChipTextAppearance" parent="TextAppearance.MaterialComponents.Chip">
        <item name="android:textColor">@android:color/white</item>
        <item name="android:textSize">12sp</item>
    </style>
</resources>

standalone_chip.xml

<?xml version="1.0" encoding="utf-8"?>
<chip
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    app:chipBackgroundColor="@color/colorAccent"
    app:closeIconEnabled="true"
    style="@style/ChipTextAppearance"
    app:closeIconTint="@android:color/white" />

【参考方案1】：

在您的主要活动中，您正在这样做。

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


        Chip chip = new Chip(this);
        chip.setText("ABC");
        chip.setChipBackgroundColorResource(R.color.colorAccent);
        chip.setCloseIconVisible(true);
        chip.setTextColor(getResources().getColor(R.color.white));
        chip.setTextAppearance(R.style.ChipTextAppearance);

        Chip chip2 = new Chip(this);
        chip.setText("XYZ");
        chip.setChipBackgroundColorResource(R.color.colorAccent);
        chip.setCloseIconVisible(true);
        chip.setTextColor(getResources().getColor(R.color.white));
        chip.setTextAppearance(R.style.ChipTextAppearance);


        ChipGroup chipGroup = findViewById(R.id.chip_group_main);

        chipGroup.addView(chip);
        chipGroup.addView(chip2);

请注意，您正在创建一个新的芯片实例，即芯片 2，但您在下一行中更改的是芯片而不是芯片 2 实例，因此芯片 2 不会受到您之前所做的任何更改的影响。因此，为了解决这个问题，您可以像这样更改您的代码

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


            Chip chip = new Chip(this);
            chip.setText("ABC");
            chip.setChipBackgroundColorResource(R.color.colorAccent);
            chip.setCloseIconVisible(true);
            chip.setTextColor(getResources().getColor(R.color.white));
            chip.setTextAppearance(R.style.ChipTextAppearance);

            Chip chip2 = new Chip(this);
            chip2.setText("XYZ");  //chip2
            chip2.setChipBackgroundColorResource(R.color.colorAccent);
            chip2.setCloseIconVisible(true);
            chip2.setTextColor(getResources().getColor(R.color.white));
            chip2.setTextAppearance(R.style.ChipTextAppearance);


            ChipGroup chipGroup = findViewById(R.id.chip_group_main);

            chipGroup.addView(chip);
            chipGroup.addView(chip2);

【参考方案2】：

是的，可以使用 chipGroup.addView(chip); 将筹码添加到组中 请注意，您应该为每个芯片添加 id 以便完美地完成某些组工作的功能（例如singleSelection="true"）

 chip.setId(ViewCompat.generateViewId());