在水平滚动视图中单击时如何滚动到芯片?
How to scroll to chip when clicked in horizontal scroll view?
我有一个带有 ChipGroup 和一些芯片的 HorizontalScrollView。当我检查从屏幕上切下的 Chip 时,我希望 ScrollView 捕捉并完整显示它。
This is how it looks like when I select it.
我的布局文件如下所示:
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorWhite"
android:theme="@style/Theme.MaterialComponents">
<FrameLayout
android:id="@+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="165dp" />
<LinearLayout
android:id="@+id/linear_layout"
android:layout_width="match_parent"
android:layout_height="45dp"
android:layout_marginTop="120dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<HorizontalScrollView
android:id="@+id/scroll_view"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.chip.ChipGroup
android:id="@+id/chip_group"
android:layout_width="wrap_content"
android:layout_height="match_parent"
app:chipSpacingHorizontal="10dp"
app:singleLine="true"
app:singleSelection="true"
app:selectionRequired="true">
<com.google.android.material.chip.Chip
android:id="@+id/chip_all"
android:layout_width="wrap_content"
android:layout_height="44dp"
android:layout_marginLeft="15dp"
android:backgroundTint="@color/indicator_chips"
android:checkable="true"
app:chipCornerRadius="10dp"
android:text="ALL"
android:textColor="@color/indicator_text"
app:checkedIconEnabled="false"
app:chipStrokeColor="@color/indicator_stroke"
app:chipStrokeWidth="1dp" />
<com.google.android.material.chip.Chip
android:id="@+id/chip_watching"
android:layout_width="wrap_content"
android:layout_height="44dp"
android:checkable="true"
android:text="WATCHING"
android:textColor="@color/indicator_text"
app:chipCornerRadius="10dp"
app:checkedIconEnabled="false"
android:backgroundTint="@color/indicator_chips"
app:chipStrokeColor="@color/indicator_stroke"
app:chipStrokeWidth="1dp" />
<com.google.android.material.chip.Chip
android:id="@+id/chip_completed"
android:layout_width="wrap_content"
android:layout_height="44dp"
android:checkable="true"
android:text="COMPLETED"
android:textColor="@color/indicator_text"
app:chipCornerRadius="10dp"
app:checkedIconEnabled="false"
android:backgroundTint="@color/indicator_chips"
app:chipStrokeColor="@color/indicator_stroke"
app:chipStrokeWidth="1dp" />
<com.google.android.material.chip.Chip
android:id="@+id/chip_onhold"
android:layout_width="wrap_content"
android:layout_height="44dp"
android:checkable="true"
android:text="ON HOLD"
android:textColor="@color/indicator_text"
app:chipCornerRadius="10dp"
app:checkedIconEnabled="false"
android:backgroundTint="@color/indicator_chips"
app:chipStrokeColor="@color/indicator_stroke"
app:chipStrokeWidth="1dp" />
<com.google.android.material.chip.Chip
android:id="@+id/chip_dropped"
android:layout_width="wrap_content"
android:layout_height="44dp"
android:checkable="true"
android:text="DROPPED"
android:textColor="@color/indicator_text"
app:chipCornerRadius="10dp"
app:checkedIconEnabled="false"
android:backgroundTint="@color/indicator_chips"
app:chipStrokeColor="@color/indicator_stroke"
app:chipStrokeWidth="1dp" />
<com.google.android.material.chip.Chip
android:id="@+id/chip_plantowatch"
android:layout_width="wrap_content"
android:layout_height="44dp"
android:layout_marginRight="15dp"
android:checkable="true"
android:text="PLAN TO WATCH"
android:textColor="@color/indicator_text"
app:chipCornerRadius="10dp"
app:checkedIconEnabled="false"
android:backgroundTint="@color/indicator_chips"
app:chipStrokeColor="@color/indicator_stroke"
app:chipStrokeWidth="1dp" />
</com.google.android.material.chip.ChipGroup>
</HorizontalScrollView>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
还有我的 class 文件:
public class LibraryFragment extends Fragment {
private HorizontalScrollView scrollView;
Chip chip_dropped;
ChipGroup chipGroup;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_library_anime, container, false);
return view;
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
scrollView = view.findViewById(R.id.scroll_view);
chipGroup = view.findViewById(R.id.chip_group);
chipGroup.setOnCheckedChangeListener(checkedListener);
}
ChipGroup.OnCheckedChangeListener checkedListener = new ChipGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(ChipGroup group, int checkedId) {
FragmentTransaction fragmentTransaction = getActivity().getSupportFragmentManager().beginTransaction();
switch (group.getCheckedChipId()) {
case R.id.chip_all:
fragmentTransaction.replace(R.id.fragment_container, new ListALL()).commit();
break;
case R.id.chip_watching:
fragmentTransaction.replace(R.id.fragment_container, new ListWATCHING()).commit();
break;
case R.id.chip_completed:
fragmentTransaction.replace(R.id.fragment_container, new ListCOMPLETED()).commit();
break;
case R.id.chip_onhold:
fragmentTransaction.replace(R.id.fragment_container, new ListONHOLD()).commit();
break;
case R.id.chip_dropped:
fragmentTransaction.replace(R.id.fragment_container, new ListDROPPED()).commit();
break;
case R.id.chip_plantowatch:
fragmentTransaction.replace(R.id.fragment_container, new ListPLANTOWATCH()).commit();
break;
}
}
};
}
重复一遍,我试图让我的 ScrollView 在单击时滚动到 Chip,like the play store with its. 我尝试了 .scroolTo 和 .smoothScrollTo,但没有一个起作用。
我为您制作了一个示例项目。我认为您可以轻松地将其转换为您的应用程序。
MainActivity.java
public class MainActivity extends AppCompatActivity
{
HorizontalScrollView scroll;
int widthScreen;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
DisplayMetrics displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
widthScreen = displayMetrics.widthPixels;
scroll = findViewById(R.id.scroll);
LinearLayout linearLayout = findViewById(R.id.linLay);
for (int index = 0; index <= linearLayout.getChildCount() - 1; index++)
{
linearLayout.getChildAt(index).setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
Rect r = new Rect();
v.getGlobalVisibleRect(r);
if (r.right == widthScreen)
{
Rect rr = new Rect();
v.getDrawingRect(rr);
scroll.smoothScrollBy(rr.right - (widthScreen - r.left), 0);
}
else if (r.left == 0)
{
Rect rr = new Rect();
v.getDrawingRect(rr);
scroll.smoothScrollBy(rr.right - (widthScreen - r.right), 0);
}
}
});
}
}
}
MainActivity.XML(只是 ScrollView 中的按钮)
<HorizontalScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/scroll"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<LinearLayout
android:id="@+id/linLay"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="2" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="3" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="4" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="5" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="6" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="7" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="8" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="9" />
</LinearLayout>
</HorizontalScrollView>
当您单击未完全显示在屏幕上的按钮时,ScrollView 将滚动到适当的位置以显示完整的按钮。
使用@iknow 发布的代码,我将其更改为与带有 Chips 的 Play 商店完全一样的工作方式
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
chipGroup = view.findViewById(R.id.chip_group);
final Chip chip_all = view.findViewById(R.id.chip_all);
final Chip chip_watching = view.findViewById(R.id.chip_watching);
final Chip chip_completed = view.findViewById(R.id.chip_completed);
final Chip chip_onhold = view.findViewById(R.id.chip_onhold);
final Chip chip_dropped = view.findViewById(R.id.chip_dropped);
final Chip chip_plantowatch = view.findViewById(R.id.chip_plantowatch);
DisplayMetrics displayMetrics = new DisplayMetrics();
getActivity().getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
widthScreen = displayMetrics.widthPixels;
scrollView = view.findViewById(R.id.scroll_view);
chipGroup = view.findViewById(R.id.chip_group_anime);
for (int index = 0; index <= chipGroup.getChildCount() - 1; index++) {
chipGroup.getChildAt(index).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Rect r = new Rect();
view.getGlobalVisibleRect(r);
if(chip_all.isChecked()) {
Rect rr = new Rect();
view.getDrawingRect(rr);
scrollView.smoothScrollBy(rr.right - (widthScreen - r.right), 0);
}
if(chip_watching.isChecked()) {
Rect rr = new Rect();
view.getDrawingRect(rr);
scrollView.smoothScrollBy(rr.right - (widthScreen - r.right), 0);
}
if(chip_completed.isChecked()) {
scrollView.smoothScrollTo(chip_completed.getLeft() - (widthScreen / 2) + (chip_completed.getWidth() / 2), 0);
}
if(chip_onhold.isChecked()) {
scrollView.smoothScrollTo(chip_onhold.getLeft() - (widthScreen / 2) + (chip_onhold.getWidth() / 2), 0);
}
if(chip_dropped.isChecked()) {
Rect rr = new Rect();
view.getDrawingRect(rr);
scrollView.smoothScrollBy(r.right, 0);
}
if(chip_plantowatch.isChecked()) {
Rect rr = new Rect();
view.getDrawingRect(rr);
scrollView.smoothScrollBy(r.right, 0);
}
}
});
}
}
最终产品看起来像上面的 gif,再次感谢提供代码的@iknow!
我有一个带有 ChipGroup 和一些芯片的 HorizontalScrollView。当我检查从屏幕上切下的 Chip 时,我希望 ScrollView 捕捉并完整显示它。
This is how it looks like when I select it.
我的布局文件如下所示:
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorWhite"
android:theme="@style/Theme.MaterialComponents">
<FrameLayout
android:id="@+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="165dp" />
<LinearLayout
android:id="@+id/linear_layout"
android:layout_width="match_parent"
android:layout_height="45dp"
android:layout_marginTop="120dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<HorizontalScrollView
android:id="@+id/scroll_view"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.chip.ChipGroup
android:id="@+id/chip_group"
android:layout_width="wrap_content"
android:layout_height="match_parent"
app:chipSpacingHorizontal="10dp"
app:singleLine="true"
app:singleSelection="true"
app:selectionRequired="true">
<com.google.android.material.chip.Chip
android:id="@+id/chip_all"
android:layout_width="wrap_content"
android:layout_height="44dp"
android:layout_marginLeft="15dp"
android:backgroundTint="@color/indicator_chips"
android:checkable="true"
app:chipCornerRadius="10dp"
android:text="ALL"
android:textColor="@color/indicator_text"
app:checkedIconEnabled="false"
app:chipStrokeColor="@color/indicator_stroke"
app:chipStrokeWidth="1dp" />
<com.google.android.material.chip.Chip
android:id="@+id/chip_watching"
android:layout_width="wrap_content"
android:layout_height="44dp"
android:checkable="true"
android:text="WATCHING"
android:textColor="@color/indicator_text"
app:chipCornerRadius="10dp"
app:checkedIconEnabled="false"
android:backgroundTint="@color/indicator_chips"
app:chipStrokeColor="@color/indicator_stroke"
app:chipStrokeWidth="1dp" />
<com.google.android.material.chip.Chip
android:id="@+id/chip_completed"
android:layout_width="wrap_content"
android:layout_height="44dp"
android:checkable="true"
android:text="COMPLETED"
android:textColor="@color/indicator_text"
app:chipCornerRadius="10dp"
app:checkedIconEnabled="false"
android:backgroundTint="@color/indicator_chips"
app:chipStrokeColor="@color/indicator_stroke"
app:chipStrokeWidth="1dp" />
<com.google.android.material.chip.Chip
android:id="@+id/chip_onhold"
android:layout_width="wrap_content"
android:layout_height="44dp"
android:checkable="true"
android:text="ON HOLD"
android:textColor="@color/indicator_text"
app:chipCornerRadius="10dp"
app:checkedIconEnabled="false"
android:backgroundTint="@color/indicator_chips"
app:chipStrokeColor="@color/indicator_stroke"
app:chipStrokeWidth="1dp" />
<com.google.android.material.chip.Chip
android:id="@+id/chip_dropped"
android:layout_width="wrap_content"
android:layout_height="44dp"
android:checkable="true"
android:text="DROPPED"
android:textColor="@color/indicator_text"
app:chipCornerRadius="10dp"
app:checkedIconEnabled="false"
android:backgroundTint="@color/indicator_chips"
app:chipStrokeColor="@color/indicator_stroke"
app:chipStrokeWidth="1dp" />
<com.google.android.material.chip.Chip
android:id="@+id/chip_plantowatch"
android:layout_width="wrap_content"
android:layout_height="44dp"
android:layout_marginRight="15dp"
android:checkable="true"
android:text="PLAN TO WATCH"
android:textColor="@color/indicator_text"
app:chipCornerRadius="10dp"
app:checkedIconEnabled="false"
android:backgroundTint="@color/indicator_chips"
app:chipStrokeColor="@color/indicator_stroke"
app:chipStrokeWidth="1dp" />
</com.google.android.material.chip.ChipGroup>
</HorizontalScrollView>
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
还有我的 class 文件:
public class LibraryFragment extends Fragment {
private HorizontalScrollView scrollView;
Chip chip_dropped;
ChipGroup chipGroup;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_library_anime, container, false);
return view;
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
scrollView = view.findViewById(R.id.scroll_view);
chipGroup = view.findViewById(R.id.chip_group);
chipGroup.setOnCheckedChangeListener(checkedListener);
}
ChipGroup.OnCheckedChangeListener checkedListener = new ChipGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(ChipGroup group, int checkedId) {
FragmentTransaction fragmentTransaction = getActivity().getSupportFragmentManager().beginTransaction();
switch (group.getCheckedChipId()) {
case R.id.chip_all:
fragmentTransaction.replace(R.id.fragment_container, new ListALL()).commit();
break;
case R.id.chip_watching:
fragmentTransaction.replace(R.id.fragment_container, new ListWATCHING()).commit();
break;
case R.id.chip_completed:
fragmentTransaction.replace(R.id.fragment_container, new ListCOMPLETED()).commit();
break;
case R.id.chip_onhold:
fragmentTransaction.replace(R.id.fragment_container, new ListONHOLD()).commit();
break;
case R.id.chip_dropped:
fragmentTransaction.replace(R.id.fragment_container, new ListDROPPED()).commit();
break;
case R.id.chip_plantowatch:
fragmentTransaction.replace(R.id.fragment_container, new ListPLANTOWATCH()).commit();
break;
}
}
};
}
重复一遍,我试图让我的 ScrollView 在单击时滚动到 Chip,like the play store with its. 我尝试了 .scroolTo 和 .smoothScrollTo,但没有一个起作用。
我为您制作了一个示例项目。我认为您可以轻松地将其转换为您的应用程序。
MainActivity.java
public class MainActivity extends AppCompatActivity
{
HorizontalScrollView scroll;
int widthScreen;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
DisplayMetrics displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
widthScreen = displayMetrics.widthPixels;
scroll = findViewById(R.id.scroll);
LinearLayout linearLayout = findViewById(R.id.linLay);
for (int index = 0; index <= linearLayout.getChildCount() - 1; index++)
{
linearLayout.getChildAt(index).setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
Rect r = new Rect();
v.getGlobalVisibleRect(r);
if (r.right == widthScreen)
{
Rect rr = new Rect();
v.getDrawingRect(rr);
scroll.smoothScrollBy(rr.right - (widthScreen - r.left), 0);
}
else if (r.left == 0)
{
Rect rr = new Rect();
v.getDrawingRect(rr);
scroll.smoothScrollBy(rr.right - (widthScreen - r.right), 0);
}
}
});
}
}
}
MainActivity.XML(只是 ScrollView 中的按钮)
<HorizontalScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/scroll"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<LinearLayout
android:id="@+id/linLay"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="2" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="3" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="4" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="5" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="6" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="7" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="8" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="9" />
</LinearLayout>
</HorizontalScrollView>
当您单击未完全显示在屏幕上的按钮时,ScrollView 将滚动到适当的位置以显示完整的按钮。
使用@iknow 发布的代码,我将其更改为与带有 Chips 的 Play 商店完全一样的工作方式
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
chipGroup = view.findViewById(R.id.chip_group);
final Chip chip_all = view.findViewById(R.id.chip_all);
final Chip chip_watching = view.findViewById(R.id.chip_watching);
final Chip chip_completed = view.findViewById(R.id.chip_completed);
final Chip chip_onhold = view.findViewById(R.id.chip_onhold);
final Chip chip_dropped = view.findViewById(R.id.chip_dropped);
final Chip chip_plantowatch = view.findViewById(R.id.chip_plantowatch);
DisplayMetrics displayMetrics = new DisplayMetrics();
getActivity().getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
widthScreen = displayMetrics.widthPixels;
scrollView = view.findViewById(R.id.scroll_view);
chipGroup = view.findViewById(R.id.chip_group_anime);
for (int index = 0; index <= chipGroup.getChildCount() - 1; index++) {
chipGroup.getChildAt(index).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Rect r = new Rect();
view.getGlobalVisibleRect(r);
if(chip_all.isChecked()) {
Rect rr = new Rect();
view.getDrawingRect(rr);
scrollView.smoothScrollBy(rr.right - (widthScreen - r.right), 0);
}
if(chip_watching.isChecked()) {
Rect rr = new Rect();
view.getDrawingRect(rr);
scrollView.smoothScrollBy(rr.right - (widthScreen - r.right), 0);
}
if(chip_completed.isChecked()) {
scrollView.smoothScrollTo(chip_completed.getLeft() - (widthScreen / 2) + (chip_completed.getWidth() / 2), 0);
}
if(chip_onhold.isChecked()) {
scrollView.smoothScrollTo(chip_onhold.getLeft() - (widthScreen / 2) + (chip_onhold.getWidth() / 2), 0);
}
if(chip_dropped.isChecked()) {
Rect rr = new Rect();
view.getDrawingRect(rr);
scrollView.smoothScrollBy(r.right, 0);
}
if(chip_plantowatch.isChecked()) {
Rect rr = new Rect();
view.getDrawingRect(rr);
scrollView.smoothScrollBy(r.right, 0);
}
}
});
}
}
最终产品看起来像上面的 gif,再次感谢提供代码的@iknow!