Welcome, Buddy. In this Android training guide, we examine the behavior of the bottom leaves in Android. We will see what Lower Leaf Behavior is, how it works, and we will learn what phase of the Lower Leaf Behavior implementation is in. Then let’s get started.
What are bottom leaves?
Background pages are interface items that contain additional content. It is usually attached to the lower edge of the screen. Simply put, BottomSheet is a hardware design component that slides up from the bottom of the screen to display additional content.
Use
Subsheets are additional surfaces used on mobile devices. There are two types, which are suitable for different purposes:
Modal background sheets – an alternative to your mobile phone’s built-in dialogs and provides space for descriptions and iconography. which opens from the bottom when interacting with the user. If you want to communicate something, an option like this appears at the bottom. For the model on the back I wrote a separate article here.
Persistent Bottom Sheet – provides a wrap-around interface that can be expanded through user interaction (drag and drop, click a button), access to an important function. Simply put, you say that stubborn people can get out of control at any time.
Continuous bottom sheet
It is also known as BottomSheetBehavior. It works with CoordinatorLayout and displays the content above the main layout. The bottom sheet is a well-written hardware design element that improves input/output animation, reacts to drag-and-drop/wipe movements, etc.
Rigid base plate installation step
- Configure the project and add hardware to the design.
- Prepare the layout of the bottom sheet.
- Light the lower blade with the main contents.
- Click on the activity sheet below.
- Check the application template.
Guys, I’ll make a sample application now by following the step above. So, let’s get started.
1. Project modification and addition of materials io dependent on design
Let’s open an Iroid studio with Iroidx and add the dependency on Io hardware.
the implementation of androidx.appcompat:appcompat:1.1.0
the implementation of the androidx.constraint layout:constraint layout:1.1.3 application
Implementation ‘androidx.appcompat:appcompat:1.1.0’ Implementation ‘androidx.constraintlayout:constraintlayout:1.1.3’.
Implementation of androidx.appcompat:appcompat:1.1.0
Implementation of androidx.constraint layout:constraint layout:1.1.3
1.1 Open the file color.xml and add colors under.
1.2 Adding some filenames
1.3 Adding a style to the bottom drawing button in style.xml
.
2. Preparation of the layout of the background form
In the res -> layout folder, create an XML file of the layout called bottom_sheet.xml and enter the code below.
xmlns:app=http://schemas.android.com/apk/res-auto android:[email protected]+id/bottom_sheet android: layout_width=match_parent android: layout_height=wrap_content android: background=#fff android: orientation=vertical app:behavior_hideable=wrong app:behavior_peekHeight=72dp app:layout_behavior=com.google.android.material.bottomsheet.BottomsheetBehavior android: [email protected]+id/constraintLayout android: layout_width=0dp android: layout_height=wrap_content android: [email protected]/colorAccent app:layout_constraintEnd_toEndOf=higher app:layout_constraintStartOf=higher app:layout_constraintTop_toTopOf= higher android:[email protected]+id/picture display android: layout_width=60dp android: layout_height=60dp android: layout_marginBottom=8dp android: layout_marginLeft=8dp android: layout_marginStart=8dp android: layout_marginTop=8dp app:layout_constraintBottom_toBottomOf=parent app:layout_constraintStartOf=higher app:layout_constraintTop_toTopOf= higher app:[email protected]/user_image android: [email protected]+id/text display android: layout_width=0dp android: layout_height=wrap_content android: layout_marginEnd=8dp android: layout_marginLeft=16dp android: layout_marginRight=8dp android: layout_marginStart=16dp android: layout_marginTop=8dp android:text=Loren Kushwaha android: [email protected]/colorWhite app:layout_constraintEnd_toEndOf=higher app:[email protected]+id/imageView app:[email protected]+id/imageView android:[email protected]+id/textView2 android: layout_width=0dp android: layout_height=wrap_content android: layout_marginEnd=8dp android: layout_marginLeft=16dp android: layout_marginRight=8dp android: layout_marginStart=16dp android: layout_marginTop=2dp android:[email protected] android: [email protected]/colorWhite app:layout_constraintEnd_toEndOf=higher app:[email protected]+id/imageView app:[email protected]+id/textView
android: layout_width=wrap_content android: layout_height=wrap_content android: layout_marginLeft=8dp android: layout_marginStart=8dp android: [email protected]/ic_call android: [email protected]/colorAccent app:[email protected]+id/button3 app:layout_restrictionHorizontal_preload=0.5 app:layout_constraintStartOf=higher app:[email protected]+id/button3 android: [email protected]+id/button2 android: layout_width=wrap_content android: layout_height=wrap_content android: layout_marginEnd=8dp android: layout_marginLeft=8dp android: layout_marginRight=8dp android: layout_marginStart=8dp android:[email protected]/ic_save android: [email protected]/colorAccent app:layout_constraintEnd_toEndOf=higher app:layout_restrictionHorizontal_preload=0.5 app:[email protected]+id/button3 app:[email protected]+id/button3 android: [email protected]+id/button3 android: layout_width=wrap_content android: layout_height=wrap_content android: layout_marginLeft=16dp android: layout_marginStart=16dp android: layout_marginTop=24dp android: [email protected]: colors/transparent android:[email protected]/ic_website android: [email protected]/colorAccent app:[email protected]+id/button2 app:layout_restrictionHorizontal_preload=0.5 app:[email protected]+id/button app:[email protected]+id/constraintLayout android:[email protected]+id/textView3 android: layout_width=0dp android: layout_height=1dp android: layout_marginTop=24dp android: background=#ed app:layout_constraintEnd_toEndOf=higher app:layout_constraintStartOf=higher app:[email protected]+id/button3 android:[email protected]+id/textView4 android: layout_width=0dp android: layout_height=wrap_content android: layout_marginEnd=8dp android: layout_marginLeft=8dp android: layout_marginRight=8dp android: layout_marginStart=8dp android: layout_marginTop=8dp android: text=Tutorials for developing applications for Android and iOS for Firebase, Camera2 API, Exo Player, Youtube API, Dagger2, RxJava, MVVM, MVP, Realm, etc. app:layout_constraintEnd_toEndOf=higher app:layout_constraintStartOf=higher app:[email protected]+id/textView3 android:[email protected]+id/textView5 android: layout_width=0dp android: layout_height=1dp android: layout_marginTop=8dp android: background=#ed app:layout_constraintEnd_toEndOf=higher app:layout_constraintStartOf=higher app:[email protected]+id/textView4 android:[email protected]+id/textView6 android: layout_marginTop=8dp android:[email protected]/action_keep app:layout_constraintEnd_toEndOf=higher app:layout_constraintStartOf=higher app:[email protected]+id/textView5 [email protected]/bottom_sheet_item android:[email protected]+id/textView7 android: [email protected]/action_inbox app:layout_constraintEnd_toEndOf=higher app:layout_constraintStartOf=higher app:[email protected]+id/textView6 [email protected]/bottom_sheet_item android:[email protected]+id/textView8 android: [email protected]/action_hangout app:layout_constraintEnd_toEndOf=higher app:layout_constraintStartOf=higher app:[email protected]+id/textView7 [email protected]/bottom_sheet_item /> If you have seen the code above, I have some extra tags like layout_behavior, behavior_hideable, behavior_peekHeight, etcetera. Don’t worry, I’ll explain them all in detail. I applied the behaviour by adding the xml attribute app:layout_behavior=com.google.android.material.bottomsheet.BottomsheetBehavior app:layout_behavior=com.google.android.material.bottomsheet.BottomsheetBehavior app:layout_behavior=com.google.android.material.bottomsheet.BottomsheetBehavior You can define the following behavioral characteristics 3. Light the lower sheet with the main contents. So let’s open the share file into which you want to insert the lower part. BottomSheetBehavior only works with CoordinatorLayout. That means he must be a direct child. Open the file presenting the activity and enter a code below. 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 android: layout_width=match_parent android: layout_height=match_parent app:[email protected]/appbar_scrolling_view_behavior android: [email protected]+id/textView10 android: layout_width=wrap_content android: layout_height=wrap_content android:text= This is an example for the BottomSheet Behaviour application. android: [email protected]/colorPrimaryDark app:layout_constraintBottom_toBottomOf=parent app:layout_restrictionHorizontal_preload=0.0 app:layout_constraintLeft_toLeftOf=parent app:layout_constraintRight_toRightOf=parent app:layout_constraintTop_toTopOf= higher app:layout_restrictionVertical_preload=0.054 android:[email protected]+id/buttonToggleBottomSheet android: layout_width=wrap_content android: layout_height=wrap_content android: layout_marginEnd=8dp android: layout_marginLeft=8dp android: layout_marginRight=8dp android: layout_marginStart=8dp android: layout_marginTop=16dp android: text=bottom sheet app:layout_constraintEnd_toEndOf=higher app:layout_restrictionHorizontal_preload=0.497 app:layout_constraintStartOf=higher app:[email protected]+id/textViewState android:[email protected]+id/textViewState android: layout_width=wrap_content android: layout_height=wrap_content android: layout_marginEnd=8dp android: layout_marginLeft=8dp android: layout_marginRight=8dp android: layout_marginStart=8dp android: layout_marginTop=16dp android: [email protected]/colorAccent app:layout_constraintEnd_toEndOf=higher app:layout_constraintStartOf=higher app:[email protected]+id/textView10 tools: text=Basic sheet behavior status 4. Enter the behaviour of the bottom sheet in the activity. After all the work we’ve done, let’s move on to the actual implementation of the resources. Package com.android.bottom sheet ; Import the android.os package; import android.view import android.widget.button ; Import android.widget.textView ; androidx.annotation.non-zero import; Import androidx.appcompat.appCompatActivity ; Import androidx.constraintlayout.widget.ConstraintLayout com.google.android.material.bottomsheet.BottomsheetBehavior ; the MainActivity public class expands AppCompatActivity { TextSee textSee textSee textSee backgroundState ; Button for shifting the bottom sheet; Behavior under leaves Behavior under leaves ; private static end line TAG = MainActivity ; protected hole onCreate(Bundle storedInstanceState) { create super.onCreate(savedInstanceState) ; setContentView(R.layout.activity_main) ; toggleBottomSheet = findViewById(R.id.buttonToggleBottomSheet) ; textViewBottomSheetState = findViewById(R.id.textViewState) ; // look at the bottom ConstraintLayout bottomSheetLayout = findViewById(R.id.bottom_sheet) ; // depending on the behaviour of the lower blade bottomSheetBehavior = BottomSheetBehavior.from(bottomSheetLayout) ; // Restore the reminder for changes bottomSheetBehavior.setBottomSheetCallback(new bottomSheetBehavior.BottomSheetCallback() {) Checking the public blank for StateateChanged (@NonNull View bottomSheet, int newState) { the BottomSheetBehavior case. STATE_HIDDEN : textViewBottomSheetState.setText(STATE HIDDEN) ; Behavior at the bottom of the page. STATE_EXTENDED : textViewBottomSheetState.setText(state extended) ; // adjust the text of the shift key switchBottomSheet.setText(Extend BottomSheet) ; the BottomSheetBehavior.STATE_COLLAPSED case: textViewBottomSheetState.setText(STATE COLLAPSED) ; // minimized update button text switchBottomSheet.setText(Collapse BottomSheet) ; the BottomSheetBehavior.STATE_DRAGING case: textViewBottomSheetState.setText(STATE DRAGGING) ; the BottomSheetBehavior.STATE_SETTLING case: textViewBottomSheetState.setText(STATE SETTLING) ; Log.d(TAG, onStateChanged: + newState) ; @ Detection of a public blank on the slide (@Non-zero view background sheet, slide offset from float) { // put the listener in contact with the switchBottomSheet.setOnClickListener(new view.OnClickListener() {) @Define an audience blank image {. if (bottomSheetBehavior.getState() != BottomSheetBehavior.STATE_EXPANDED) { bottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED) ; switchBottomSheet.setText(Collapse BottomSheet) ; bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLLAPSED) ; switchBottomSheet.setText(Extend BottomSheet) ; Import com.android.bottomsheet package; import android.os.bundle; import android.util.log; import android.view; import android.widget.Button; import android.widget.TextView; import androidx.annotation.NonNull; import androidx.appcompat.appCompatActivity; import androidx constraintlayout.widget.ConstraintLayout; com.google.android.android material.bottomsheet.import.BottomSheetBehavior; MainActivity public class extends AppCompatActivity {TextViewBottomSheetState; BottomSheetBehavior; closed static end string tag TAG = MainActivity; @Override protected cavities onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // bind UI toggleBottomSheet = findViewById(R.id..buttonToggleBottomSheet); textViewBottomSheetState = findViewById(R.id.)textViewState); // gives the layout of the bottomSheetLayout restrictions = findViewById(R.id.bottom_sheet); // specifies the behavior of the bottomSheetBehavior = BottomSheetBehavior.van(bottomSheetLayout); // set the callback to display the behavior of bottomSheetBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() { @Override public void onStateChanged(@NonNull View bottomSheet, int newState) { switch (newState)) { case BottomSheetBehavior.STATE_HIDDEN: textViewBottomSheetState.setText(STATE HIDDEN); break; case BottomSheetBehavior.STATE_EXPANDED: textViewBottomSheetState.setText(STATE EXPANDED); // update text toggleBottomSheet.setText(Expand BottomSheet); break; case BottomSheetBehavior.STATE_COLLAPSED: textViewBottomSheetState.setText(STATE COLLAPSED); // refresh text button as minimized toggleBottomSheet.setText(Collapse BottomSheet); break; case BottomSheetBehavior.STATE_DRAGGING: textViewBottomSheetState.setText(STATE DRAGGING); break; case BottomSheetBehavior.STATE_SETTLING: textViewBottomSheetState.setText(STATE SETTLING); break; } Log.d(TAG, onStateChanged: + newState); } @ClickListener(@Nonzero view bottomSheet, SlidingFoilOffset) { })); // set the listener to theeBottomSheet.setOnClickListener(newView.OnClickListener() { @Offset public blank onClick(View-View) { if (bottomSheetBehavior.getState() != BottomSheetBehavior.STATE_EXPANDED) { bottomSheetBehavior.STATE_EXPANDED) { bottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED); } switchBottomSheet.setText(BottomSheetBehavior.STATE_EXPANDED collapse). otherwise { bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED); } switchBottomSheet.setText(BottomSheet extend); } } }. Package com.android.bottom sheet ; Import android.os.bundle; import the MainActivity public class expands AppCompatActivity { Text exampleBottom page previewStatus; switching between buttons; behaviour of bottom page ; private static end line TAG = MainActivity ; Overwrite // gives the view of the lowest sheet // enter the behaviour of the bottom plate // set the callback for changesbottomSheetBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {@Override public void onStateChanged(@NonNull View bottomSheet, int newState)) { switch(newState) {case BottomSheetBehavior.STATE_HIDDEN:textViewBottomSheetState.setText(STATE HIDDEN);break;case BottomSheetBehavior.STATE_EXPANDED:textViewBottomSheetState.setText(STATE EXPANDED);// update text switch buttoggleBottomSheet.setText(Expand BottomSheet);break;case BottomSheetBehavior.STATE_COLLAPSED:textViewBottomSheetState.setText(STATE COLLAPSED);// update texttoggleBottomSheet.setText(Collapse BottomSheet);break;case BottomSheetBehavior.STATE_DRAGGING:textViewBottomSheetState.setText(STATE DRAGGING);break;case BottomSheetBehavior.STATE_SETTLING:textViewBottomSheetState.setText(STATE SETTLING);break;}. Log.d(TAG, onStateChanged: + newState); @ Detection of a public blank on the slide (@Non-zero view background sheet, slide offset from float) { }});// set the listener to TheBottomSheet.setOnClickListener(new view.OnClickListener() {@Override public blank onClick(view) {if (bottomSheetBehavior.getState() != BottomSheetBehavior.STATE_EXPANDED) {bottomSheetBehavior.STATE_EXPANDED) {bottomSheetBehavior.STATE_EXPANDED) {bottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED) {bottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);toggleBottomSheet.setText(BottomSheetCollapse);}. otherwise {bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLLAPSED);toggleBottomSheet.setText(Expand BottomSheet);}}. In the source file we still need to initialize the BottomSheetBehavior by adding a BottomSheet layout. I have also defined the change of state to understand the current state of the bottom sheet. The rest of the code speaks for itself. Lower leaf condition The bottom sheet consists mainly of 5 states… Conclusion In this function, we learned the introduction of the behaviour of the bottom sheet. I hope this will help you, then you help me by sharing this message with all your friends who are learning how to develop Android applications. If you have any questions, please write your comments below. If you would like to integrate a UI/UX implementation into your Android project, please contact us. bottom sheet android kotlin,android bottom sheet rounded corners
android:[email protected]+id/bottom_sheet
android:layout_width=match_parent
android:layout_height=wrap_content
android:background=#fff
android:orientation=vertical
app:behavior_hideable=false
app:behavior_peekHeight=72dp
app:layout_behavior=com.google.android.material.bottomsheet.BottomsheetBehavior
>
android:layout_width=0dp
android:layout_height=wrap_content
android:[email protected]/colorAccent
app :layout_constraintEnd_toEndOf=higher
app:layout_constraintStart_toStartOf=higher
app:layout_constraintTop_toTopOf=higher
>
android:[email protected]/action_inbox
app:layout_constraintEnd_toEndOf=parent
app :layout_constraintStart_toStartOf=parent
app:[email protected]+id/textView6
[email protected]/bottom_sheet_item
/>
android:[email protected]/action_hangout
app:layout_constraintEnd_toEndOf= older
app:layout_constraintStart_toStartOf= older
app:[email protected]+id/textView7
[email protected]/bottom_sheet_item
/>
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
>.
androidx:layout_height=match_older
app:[email protected]/appbar_scrolling_view_behavior
>.
android.util.log; import
android.view.view; import
android.widget.Button; import
android.widget.TextView; import
androidx.annotation.NonNull ;
import androidx.appcompat.appCompatActivity ;
import androidx.constraintlayout.widget.ConstraintLayout ;
import com.google.android.material.bottomsheet.BottomsheetBehavior ;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.active_main);
// bind UI
toggleBottomSheet = findViewById(R.id.buttonToggleBottomSheet);
textViewBottomSheetState = findViewById(R.id.textViewState) ;
ConstraintLayout bottomSheetLayout = findViewById(R.id.bottom_sheet)
bottomSheetBehavior = BottomSheetBehavior.from(bottomSheetLayout) ;
}.
