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How to implement Android button Sheet widget?
This example demonstrates how do I implement android button sheet widget.
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml.
<?xml version="1.0" encoding="utf-8"?> <android.support.design.widget.CoordinatorLayout 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.support.design.widget.AppBarLayout android:layout_width="match_parent" android:layout_height="wrap_content"> <android.support.v7.widget.Toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="?attr/actionBarSize" android:background="?attr/colorPrimary" app:popupTheme="@style/Widget.Support.CoordinatorLayout" /> </android.support.design.widget.AppBarLayout> <include layout="@layout/content" /> <include layout="@layout/bottomsheet" /> </android.support.design.widget.CoordinatorLayout>
Step 3 − Open build.gradle (Module:app) and add the following dependency
implementation 'com.android.support:design:28.0.0' implementation 'com.jakewharton:butterknife:8.8.1' annotationProcessor 'com.jakewharton:butterknifecompiler:8.8.1'
Step 4 − Create a layout (bottomsheet.xml) and the following code −
<?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" android:id="@+id/bottomSheet" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" android:padding="4dp" app:behavior_hideable="true" app:behavior_peekHeight="10dp" app:layout_behavior="android.support.design.widget.BottomSheetBehavior"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:layout_gravity="center_vertical" android:weightSum="3"> <TextView android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="2" android:text="Order Details" android:textColor="#444" android:textSize="18dp" android:textStyle="bold" /> <TextView android:layout_width="0dp" android:gravity="right" android:layout_height="wrap_content" android:layout_weight="1" android:textStyle="bold" android:textSize="15dp" android:text="₹435.00"></TextView> </LinearLayout> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Chicken BBQ" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Chicken Biriyani" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Delivery Address" android:textColor="#444" android:textStyle="bold" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Flat No 404, India, Chennai" /> <Button android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="30dp" android:background="#000" android:text="PROCEED PAYMENT" android:textColor="#fff" /> </LinearLayout>
Step 5 − Create a layout (content.xml) and add the following code −
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="MainActivity" tools:showIn="@layout/activity_main"> <Button android:id="@+id/btnBottomSheet" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Show Bottom Sheet" android:layout_centerInParent="true"/> </RelativeLayout>
Step 6 − Add the following code to src/MainActivity.java
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.design.widget.BottomSheetBehavior;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick;
public class MainActivity extends AppCompatActivity {
@BindView(R.id.btnBottomSheet)
Button btnBottomSheet;
@BindView(R.id.bottomSheet)
LinearLayout layoutBottomSheet;
BottomSheetBehavior sheetBehavior;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
Toolbar toolbar = findViewById(R.id.toolbar);
//setSupportActionBar(toolbar);
sheetBehavior = BottomSheetBehavior.from(layoutBottomSheet);
sheetBehavior.setBottomSheetCallback(new BottomSheetBehavior.BottomSheetCallback() {
@Override
public void onStateChanged(@NonNull View bottomSheet, int newState) {
switch (newState) {
case BottomSheetBehavior.STATE_HIDDEN:
break;
case BottomSheetBehavior.STATE_EXPANDED: {
btnBottomSheet.setText("Close Sheet");
}
break;
case BottomSheetBehavior.STATE_COLLAPSED: {
btnBottomSheet.setText("Expand Sheet");
}
break;
case BottomSheetBehavior.STATE_DRAGGING:
break;
case BottomSheetBehavior.STATE_SETTLING:
break;
}
}
@Override
public void onSlide(@NonNull View bottomSheet, float slideOffset) { }
});
}
@OnClick(R.id.btnBottomSheet)
public void toggleBottomSheet() {
if (sheetBehavior.getState() !=
BottomSheetBehavior.STATE_EXPANDED) {
sheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
btnBottomSheet.setText("Close sheet");
} else {
sheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
btnBottomSheet.setText("Expand sheet");
}
}
}Step 7 − Add the following code to androidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run 
icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen −
Updated on: 02-Jul-2020
270 Views
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