芯片组 OnCheckedChangeListener() 未触发
Chip Group OnCheckedChangeListener() not triggered
我正在尝试制作一个基于 ChipGroup 和 Chip 的 recyclerview 过滤器
我在我的应用程序上使用片段,因此,包含 RecyclerView 的片段包含一个 frameLayout,它会膨胀 ChipGroup 过滤器片段
我正在尝试在用户取消选择 ChipGroup 中的所有芯片时触发监听器(我已经将监听器放在芯片上以在用户检查芯片时触发)
我已经在 chipgroup 上放了一些监听器,但没有人被触发
FilterFragment.java
public class FilterFragment extends Fragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
public ChipGroup chipGroup;
// TODO: Rename and change types of parameters
public View.OnClickListener chipClickListener;
private OnFragmentInteractionListener mListener;
public FilterFragment() {
// Required empty public constructor
}
public static FilterFragment newInstance(View.OnClickListener
param1) {
CoachFilterFragment fragment = new CoachFilterFragment();
Bundle args = new Bundle();
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup
container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_filter,
container, false);
this.chipGroup = view.findViewById(R.id.chipGroup);
for(Skill skill : ((MainActivity)getContext()).api.skills){
Chip chip = new Chip(getContext());
chip.setId(skill.getId());
chip.setText(skill.getName());
chip.setOnClickListener(chipClickListener);
chip.setCheckable(true);
chipGroup.addView(chip);
}
chipGroup.setOnCheckedChangeListener((chipGroup, id) -> {
Log.d("test","ok");
});
return view;
}
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
}
FilterFragment.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
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="wrap_content"
tools:context=".Fragment.FilterFragment">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.google.android.material.chip.ChipGroup
android:id="@+id/chipGroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
</com.google.android.material.chip.ChipGroup>
</androidx.constraintlayout.widget.ConstraintLayout>
</FrameLayout>
有人知道为什么我的 ChipGroup 没有触发任何侦听器吗?也许我缺少某些参数或其他东西?
您的代码很好,唯一的问题是 setOnCheckedChangeListener()
仅在您的 ChipGroup
用于 singleSelection
时才有效
阅读 ChipGroup
的文档
- 注册一个回调,当该组中选中的芯片发生变化时调用。
- 此回调仅在 single selection mode.
中调用
另请阅读
调用setOnCheckedChangeListener(OnCheckedChangeListener)注册一个回调,在该组checked芯片发生变化时调用。此回调仅在单选模式下调用。
如果你想使用 ChipGroup
的 setOnCheckedChangeListener()
而不是你需要 app:singleSelection="true"
更新
based on your below comment i have added sample code to manage to handle when ChipGroup selection
在 ChipGroup
中维护选择的示例代码
Layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.google.android.material.chip.ChipGroup
android:id="@+id/chipGroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
>
</com.google.android.material.chip.ChipGroup>
</androidx.constraintlayout.widget.ConstraintLayout>
<Button
android:layout_width="match_parent"
android:text="Get Result"
android:id="@+id/btnShowResult"
android:layout_gravity="bottom"
android:layout_height="wrap_content" />
</LinearLayout>
Activity code
public class Main3Activity extends AppCompatActivity {
public ChipGroup chipGroup;
public Button btnShowResult;
public ArrayList<Boolean> booleanArrayList = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main3);
chipGroup = findViewById(R.id.chipGroup);
btnShowResult = findViewById(R.id.btnShowResult);
btnShowResult.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
for (int i = 0; i < booleanArrayList.size(); i++) {
Log.e("RESULT", i + " :" + booleanArrayList.get(i));
}
}
});
for (int i = 0; i < 5; i++) {
Chip chip = new Chip(this);
chip.setId(i);
chip.setTag(i);
booleanArrayList.add(false);
chip.setText("Chip No : " + i);
chip.setCheckable(true);
chip.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
int tag = (int) compoundButton.getTag();
booleanArrayList.set(tag, b);
}
});
chipGroup.addView(chip);
}
chipGroup.invalidate();
chipGroup.setOnCheckedChangeListener(new ChipGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(ChipGroup chipGroup, int i) {
Chip chip = chipGroup.findViewById(i);
if (chip != null)
Toast.makeText(getApplicationContext(), "Chip is " + chip.getText().toString(), Toast.LENGTH_SHORT).show();
Log.e("OnCheckedChangeListener", "Called");
}
});
}
ChipGroup.OnCheckedChangeListener onCheckedChangeListener = new ChipGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(ChipGroup chipGroup, int i) {
}
};
}
更多信息请查看以下文章
Chip Click 侦听器只有在 chipGroup 中将单个选择设置为 true 时才会起作用。
app:singleSelection="true"
如果您正在使用如下样式,请确保它也被分配给每个单独的筹码。
style="@style/Widget.MaterialComponents.Chip.Choice"
像这样:
<com.google.android.material.chip.ChipGroup
android:id="@+id/chip_group"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginEnd="10dp"
app:singleSelection="true"
style="@style/Widget.MaterialComponents.Chip.Choice">
<com.google.android.material.chip.Chip
android:id="@+id/chip_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="@style/Widget.MaterialComponents.Chip.Choice"
android:text="@string/announcements"
android:textAppearance="@style/ChipThemeBold"/>
<com.google.android.material.chip.Chip
android:id="@+id/chip_3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="@style/Widget.MaterialComponents.Chip.Choice"
android:text="@string/fyi"
android:textAppearance="@style/ChipThemeBold"/>
<com.google.android.material.chip.Chip
android:id="@+id/chip_4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="@style/Widget.MaterialComponents.Chip.Choice"
android:text="@string/heartbeat"
android:textAppearance="@style/ChipThemeBold" />
<com.google.android.material.chip.Chip
android:id="@+id/chip_5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="@style/Widget.MaterialComponents.Chip.Choice"
android:text="@string/pitch"
android:textAppearance="@style/ChipThemeBold" />
<com.google.android.material.chip.Chip
android:id="@+id/chip_6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="@style/Widget.MaterialComponents.Chip.Choice"
android:text="@string/question"
android:textAppearance="@style/ChipThemeBold"
android:layout_marginEnd="15dp" />
</com.google.android.material.chip.ChipGroup>
它是这样工作的。
<com.google.android.material.chip.ChipGroup
...
...
style="@style/Widget.MaterialComponents.Chip.Choice"
app:singleSelection="true">
<!-- Declare your chips or add them programmatically -->
</com.google.android.material.chip.ChipGroup>
// Inflate instead of NEW instance
val chip = layoutInflater.inflate(R.layout.chip, chipGroup, false) as Chip
chip.text = "Text"
chipGroup.addView(chip)
// setOnCheckedChangeListener
chipGroup.setOnCheckedChangeListener { group, checkedId ->
// The same checked chip
if (checkedId == -1) {
return@setOnCheckedChangeListener
}
// TODO
}
我有同样的问题,但这与 ChipGroup
无关,因为我把 ChipGroup
放在错误的地方,像这样:
<androidx.constraintlayout.widget.ConstraintLayout>
<com.google.android.material.chip.ChipGroup />
<other full screen view />
<androidx.constraintlayout.widget.ConstraintLayout/>
它使我的 ChipGroup
无法聚焦,所以只需将 ChipGroup
移动到父视图的底部
<androidx.constraintlayout.widget.ConstraintLayout>
<other full screen view />
<-- change here -->
<com.google.android.material.chip.ChipGroup />
<androidx.constraintlayout.widget.ConstraintLayout/>
成功了,希望对你有帮助
I will suggest don't make use of recyclerview with chips if you want
horizontal scrolling because you got HorizontalScrollView
and it
works quite well with chipgroup:
基于 Nilesh Rathod 的回答。要动态添加筹码,您需要以下代码:
Activity 文件代码:
String[] fileNameChip = getIntent().getStringArrayExtra(Constants.CHIPS_NAME_ARRAY);
for (final String chipName : fileNameChip) {
LayoutInflater layoutInflater = getLayoutInflater();
Chip chip = (Chip)
layoutInflater.inflate(R.layout.cat_chip_group_item_choice, chipGroup, false);
chip.setText(chipName);
chip.setId(i); //HERE SET ID THAT WILL BE CHECKED_ID ON setOnCheckedChangeListener
chip.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d(TAG, "onClick: " + chipName );
}
});
chipGroup.addView(chip);
}
chipGroup.setOnCheckedChangeListener(new ChipGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(ChipGroup group, int checkedId) {
Log.d(TAG, "onCheckedChanged: " + checkedId);
}
});
Activity XML 文件:
<LinearLayout 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"
android:orientation="vertical">
<HorizontalScrollView
android:layout_width="match_parent"
android:scrollbars="none"
android:layout_height="wrap_content">
<com.google.android.material.chip.ChipGroup
android:id="@+id/chip_group_code_files"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:singleLine="true"
app:singleSelection="true" />
</HorizontalScrollView>
cat_chip_group_item_choice.xml:(指定芯片type:Choice,filter,Action,Normal)
<?xml version="1.0" encoding="utf-8"?>
<com.google.android.material.chip.Chip
xmlns:android="http://schemas.android.com/apk/res/android"
style="@style/Widget.MaterialComponents.Chip.Choice"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
所有筹码都需要 android:checkable="true"
属性 才能在其上存在触发器。
除了设置任何芯片的初始检查(无需点击),执行顺序必须首先创建侦听器和chipGroup.setOnCheckedChangeListener()
然后 chip.isChecked = true
.
因此您可以处理 xml 中的可检查 属性 并动态检查。
.xml
<com.google.android.material.chip.ChipGroup
..
app:singleSelection="true">
<com.google.android.material.chip.Chip
..
android:checkable="true"/>
.kt
binding.chipGroup.setOnCheckedChangeListener { chipGroup, i ->
}
binding.firstChip.isChecked = true //default
GL
您可以为所有子芯片组添加 setOnCheckedChangeListener
。 (在 Kotlin 中)
for (index in 0 until chipGroup!!.childCount) {
val chip: Chip = chipGroup!!.getChildAt(index) as Chip
// Set the chip checked change listener
chip.setOnCheckedChangeListener{view, isChecked ->
if (isChecked){
list.add(view.text.toString())
}else{
list.remove(view.text.toString())
}
if (list.isNotEmpty()){
// Show the selection
Log.d(LOGTAG,"Selected $list")
}
}
}
发现这是使用多选芯片组最简单的方法:
chipGroup.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
@Override
public void onLayoutChange(View view, int i, int i1, int i2, int i3, int i4, int i5, int i6, int i7) {
List<Integer> ids = chipGroup.getCheckedChipIds();
if (ids.contains(R.id.chip1)) {
// do your stuff
}
}
});
我正在尝试制作一个基于 ChipGroup 和 Chip 的 recyclerview 过滤器
我在我的应用程序上使用片段,因此,包含 RecyclerView 的片段包含一个 frameLayout,它会膨胀 ChipGroup 过滤器片段
我正在尝试在用户取消选择 ChipGroup 中的所有芯片时触发监听器(我已经将监听器放在芯片上以在用户检查芯片时触发)
我已经在 chipgroup 上放了一些监听器,但没有人被触发
FilterFragment.java
public class FilterFragment extends Fragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
public ChipGroup chipGroup;
// TODO: Rename and change types of parameters
public View.OnClickListener chipClickListener;
private OnFragmentInteractionListener mListener;
public FilterFragment() {
// Required empty public constructor
}
public static FilterFragment newInstance(View.OnClickListener
param1) {
CoachFilterFragment fragment = new CoachFilterFragment();
Bundle args = new Bundle();
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup
container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_filter,
container, false);
this.chipGroup = view.findViewById(R.id.chipGroup);
for(Skill skill : ((MainActivity)getContext()).api.skills){
Chip chip = new Chip(getContext());
chip.setId(skill.getId());
chip.setText(skill.getName());
chip.setOnClickListener(chipClickListener);
chip.setCheckable(true);
chipGroup.addView(chip);
}
chipGroup.setOnCheckedChangeListener((chipGroup, id) -> {
Log.d("test","ok");
});
return view;
}
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
}
FilterFragment.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
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="wrap_content"
tools:context=".Fragment.FilterFragment">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.google.android.material.chip.ChipGroup
android:id="@+id/chipGroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
</com.google.android.material.chip.ChipGroup>
</androidx.constraintlayout.widget.ConstraintLayout>
</FrameLayout>
有人知道为什么我的 ChipGroup 没有触发任何侦听器吗?也许我缺少某些参数或其他东西?
您的代码很好,唯一的问题是 setOnCheckedChangeListener()
仅在您的 ChipGroup
用于 singleSelection
时才有效
阅读 ChipGroup
- 注册一个回调,当该组中选中的芯片发生变化时调用。
- 此回调仅在 single selection mode. 中调用
另请阅读
调用setOnCheckedChangeListener(OnCheckedChangeListener)注册一个回调,在该组checked芯片发生变化时调用。此回调仅在单选模式下调用。
如果你想使用 ChipGroup
的 setOnCheckedChangeListener()
而不是你需要 app:singleSelection="true"
更新
based on your below comment i have added sample code to manage to handle when ChipGroup selection
在 ChipGroup
Layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.google.android.material.chip.ChipGroup
android:id="@+id/chipGroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
>
</com.google.android.material.chip.ChipGroup>
</androidx.constraintlayout.widget.ConstraintLayout>
<Button
android:layout_width="match_parent"
android:text="Get Result"
android:id="@+id/btnShowResult"
android:layout_gravity="bottom"
android:layout_height="wrap_content" />
</LinearLayout>
Activity code
public class Main3Activity extends AppCompatActivity {
public ChipGroup chipGroup;
public Button btnShowResult;
public ArrayList<Boolean> booleanArrayList = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main3);
chipGroup = findViewById(R.id.chipGroup);
btnShowResult = findViewById(R.id.btnShowResult);
btnShowResult.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
for (int i = 0; i < booleanArrayList.size(); i++) {
Log.e("RESULT", i + " :" + booleanArrayList.get(i));
}
}
});
for (int i = 0; i < 5; i++) {
Chip chip = new Chip(this);
chip.setId(i);
chip.setTag(i);
booleanArrayList.add(false);
chip.setText("Chip No : " + i);
chip.setCheckable(true);
chip.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
int tag = (int) compoundButton.getTag();
booleanArrayList.set(tag, b);
}
});
chipGroup.addView(chip);
}
chipGroup.invalidate();
chipGroup.setOnCheckedChangeListener(new ChipGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(ChipGroup chipGroup, int i) {
Chip chip = chipGroup.findViewById(i);
if (chip != null)
Toast.makeText(getApplicationContext(), "Chip is " + chip.getText().toString(), Toast.LENGTH_SHORT).show();
Log.e("OnCheckedChangeListener", "Called");
}
});
}
ChipGroup.OnCheckedChangeListener onCheckedChangeListener = new ChipGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(ChipGroup chipGroup, int i) {
}
};
}
更多信息请查看以下文章
Chip Click 侦听器只有在 chipGroup 中将单个选择设置为 true 时才会起作用。
app:singleSelection="true"
如果您正在使用如下样式,请确保它也被分配给每个单独的筹码。
style="@style/Widget.MaterialComponents.Chip.Choice"
像这样:
<com.google.android.material.chip.ChipGroup
android:id="@+id/chip_group"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginEnd="10dp"
app:singleSelection="true"
style="@style/Widget.MaterialComponents.Chip.Choice">
<com.google.android.material.chip.Chip
android:id="@+id/chip_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="@style/Widget.MaterialComponents.Chip.Choice"
android:text="@string/announcements"
android:textAppearance="@style/ChipThemeBold"/>
<com.google.android.material.chip.Chip
android:id="@+id/chip_3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="@style/Widget.MaterialComponents.Chip.Choice"
android:text="@string/fyi"
android:textAppearance="@style/ChipThemeBold"/>
<com.google.android.material.chip.Chip
android:id="@+id/chip_4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="@style/Widget.MaterialComponents.Chip.Choice"
android:text="@string/heartbeat"
android:textAppearance="@style/ChipThemeBold" />
<com.google.android.material.chip.Chip
android:id="@+id/chip_5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="@style/Widget.MaterialComponents.Chip.Choice"
android:text="@string/pitch"
android:textAppearance="@style/ChipThemeBold" />
<com.google.android.material.chip.Chip
android:id="@+id/chip_6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="@style/Widget.MaterialComponents.Chip.Choice"
android:text="@string/question"
android:textAppearance="@style/ChipThemeBold"
android:layout_marginEnd="15dp" />
</com.google.android.material.chip.ChipGroup>
它是这样工作的。
<com.google.android.material.chip.ChipGroup
...
...
style="@style/Widget.MaterialComponents.Chip.Choice"
app:singleSelection="true">
<!-- Declare your chips or add them programmatically -->
</com.google.android.material.chip.ChipGroup>
// Inflate instead of NEW instance
val chip = layoutInflater.inflate(R.layout.chip, chipGroup, false) as Chip
chip.text = "Text"
chipGroup.addView(chip)
// setOnCheckedChangeListener
chipGroup.setOnCheckedChangeListener { group, checkedId ->
// The same checked chip
if (checkedId == -1) {
return@setOnCheckedChangeListener
}
// TODO
}
我有同样的问题,但这与 ChipGroup
无关,因为我把 ChipGroup
放在错误的地方,像这样:
<androidx.constraintlayout.widget.ConstraintLayout>
<com.google.android.material.chip.ChipGroup />
<other full screen view />
<androidx.constraintlayout.widget.ConstraintLayout/>
它使我的 ChipGroup
无法聚焦,所以只需将 ChipGroup
移动到父视图的底部
<androidx.constraintlayout.widget.ConstraintLayout>
<other full screen view />
<-- change here -->
<com.google.android.material.chip.ChipGroup />
<androidx.constraintlayout.widget.ConstraintLayout/>
成功了,希望对你有帮助
I will suggest don't make use of recyclerview with chips if you want horizontal scrolling because you got
HorizontalScrollView
and it works quite well with chipgroup:
基于 Nilesh Rathod 的回答。要动态添加筹码,您需要以下代码:
Activity 文件代码:
String[] fileNameChip = getIntent().getStringArrayExtra(Constants.CHIPS_NAME_ARRAY);
for (final String chipName : fileNameChip) {
LayoutInflater layoutInflater = getLayoutInflater();
Chip chip = (Chip)
layoutInflater.inflate(R.layout.cat_chip_group_item_choice, chipGroup, false);
chip.setText(chipName);
chip.setId(i); //HERE SET ID THAT WILL BE CHECKED_ID ON setOnCheckedChangeListener
chip.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d(TAG, "onClick: " + chipName );
}
});
chipGroup.addView(chip);
}
chipGroup.setOnCheckedChangeListener(new ChipGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(ChipGroup group, int checkedId) {
Log.d(TAG, "onCheckedChanged: " + checkedId);
}
});
Activity XML 文件:
<LinearLayout 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"
android:orientation="vertical">
<HorizontalScrollView
android:layout_width="match_parent"
android:scrollbars="none"
android:layout_height="wrap_content">
<com.google.android.material.chip.ChipGroup
android:id="@+id/chip_group_code_files"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:singleLine="true"
app:singleSelection="true" />
</HorizontalScrollView>
cat_chip_group_item_choice.xml:(指定芯片type:Choice,filter,Action,Normal)
<?xml version="1.0" encoding="utf-8"?>
<com.google.android.material.chip.Chip
xmlns:android="http://schemas.android.com/apk/res/android"
style="@style/Widget.MaterialComponents.Chip.Choice"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
所有筹码都需要 android:checkable="true"
属性 才能在其上存在触发器。
除了设置任何芯片的初始检查(无需点击),执行顺序必须首先创建侦听器和chipGroup.setOnCheckedChangeListener()
然后 chip.isChecked = true
.
因此您可以处理 xml 中的可检查 属性 并动态检查。
.xml
<com.google.android.material.chip.ChipGroup
..
app:singleSelection="true">
<com.google.android.material.chip.Chip
..
android:checkable="true"/>
.kt
binding.chipGroup.setOnCheckedChangeListener { chipGroup, i ->
}
binding.firstChip.isChecked = true //default
GL
您可以为所有子芯片组添加 setOnCheckedChangeListener
。 (在 Kotlin 中)
for (index in 0 until chipGroup!!.childCount) {
val chip: Chip = chipGroup!!.getChildAt(index) as Chip
// Set the chip checked change listener
chip.setOnCheckedChangeListener{view, isChecked ->
if (isChecked){
list.add(view.text.toString())
}else{
list.remove(view.text.toString())
}
if (list.isNotEmpty()){
// Show the selection
Log.d(LOGTAG,"Selected $list")
}
}
}
发现这是使用多选芯片组最简单的方法:
chipGroup.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
@Override
public void onLayoutChange(View view, int i, int i1, int i2, int i3, int i4, int i5, int i6, int i7) {
List<Integer> ids = chipGroup.getCheckedChipIds();
if (ids.contains(R.id.chip1)) {
// do your stuff
}
}
});