BottomSheetDialog in android

  How to implement BottomSheetDialog in android?

 

In this blog explain how to implement Bottom Sheet Dialog with the help of Android Design Support library.

First you can add Design Support Library in your app,

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.4.0'
   // compile 'com.android.support:design:23.0.3'
    compile 'com.android.support:design:23.4.0'
}

 then you have create bottomsheet_dialog.xml class.

bottomsheet_dialog.xml.

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="300dp"
        android:gravity="center"
        android:orientation="vertical">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:text="Bottom Sheet Dialog Example"
            android:textSize="26dp"
            android:textStyle="bold"/>
        <ImageView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@mipmap/ic_launcher"/>

    </LinearLayout>
</LinearLayout>

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Activity_main.xml.

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:orientation="vertical"
    android:paddingTop="@dimen/activity_vertical_margin"
     >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="30dp"
        android:textStyle="bold"
        android:text="Android Beginner point" />
    <LinearLayout
        android:id="@+id/backgroundlayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:gravity="center"
        android:background="#bc67bc">

        <TextView
            android:id="@+id/textSDK"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:textColor="#ffffff"
            android:textStyle="bold"/>
        <TextView
            android:id="@+id/prompt1"
            android:textSize="28dp"
            android:textColor="#ffffff"
            android:textStyle="bold"
            android:gravity="center"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
        <TextView
            android:id="@+id/prompt2"
            android:textSize="28dp"
            android:layout_width="match_parent"
            android:textColor="#ffffff"
            android:textStyle="bold"
            android:gravity="center"
            android:layout_height="wrap_content" />
    </LinearLayout>
</LinearLayout>

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MainActivity.java

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import android.content.DialogInterface;
import android.os.Build;
import android.support.annotation.NonNull;
import android.support.design.widget.BottomSheetBehavior;
import android.support.design.widget.BottomSheetDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    LinearLayout backgroundLayout;
    View bottomSheetView;
    TextView textPrompt1, textPrompt2;
    TextView textSDK;

    BottomSheetDialog bottomSheetDialog;
    BottomSheetBehavior bottomSheetBehavior;

    int sdk_int = Build.VERSION.SDK_INT;

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

        textSDK = (TextView)findViewById(R.id.textSDK);
       // textSDK.setText("Running SDK_INT: " + sdk_int);

        textPrompt1 = (TextView)findViewById(R.id.prompt1);
        textPrompt2 = (TextView)findViewById(R.id.prompt2);
        backgroundLayout = (LinearLayout)findViewById(R.id.backgroundlayout);

        bottomSheetView = getLayoutInflater().inflate(R.layout.bottosheet_dialog, null);
        bottomSheetDialog = new BottomSheetDialog(MainActivity.this);
        bottomSheetDialog.setContentView(bottomSheetView);
        bottomSheetBehavior = BottomSheetBehavior.from((View) bottomSheetView.getParent());
        bottomSheetBehavior.setBottomSheetCallback(bottomSheetCallback);

        bottomSheetDialog.setOnShowListener(new DialogInterface.OnShowListener() {
            @Override
            public void onShow(DialogInterface dialog) {
                textPrompt1.setText("Show");
            }
        });

        bottomSheetDialog.setOnDismissListener(new DialogInterface.OnDismissListener() {
            @Override
            public void onDismiss(DialogInterface dialog) {
                bottomSheetBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
                textPrompt1.setText("Dismiss");
            }
        });

        backgroundLayout.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                bottomSheetBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);
                bottomSheetDialog.show();
            }
        });

    }

    BottomSheetBehavior.BottomSheetCallback bottomSheetCallback =
            new BottomSheetBehavior.BottomSheetCallback(){
                @Override
                public void onStateChanged(@NonNull View bottomSheet, int newState) {
                    switch (newState){

                        case BottomSheetBehavior.STATE_EXPANDED:
                            textPrompt2.setText("EXPANDED");
                            break;

                        case BottomSheetBehavior.STATE_SETTLING:
                            textPrompt2.setText("SETTLING");
                            break;
                        default:
                            textPrompt2.setText("unknown...");
                    }
                }

                @Override
                public void onSlide(@NonNull View bottomSheet, float slideOffset) {

                }
            };
}

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