Android Watch Demo | Google Watch | Android Watch Time Demo | Creating Wearable Apps in Android Google

I am going to share step to create a simple Google watch demo to show current time and date using java.util-

1)Open Android Studio IDE and update it to API Level 20.
2)Create New Project
3)Choose Android Wear project
4)Now by default IDE will create MainActivity.java and activity_main.xml, rect_activity_main.xml, round_activity_main.xml
5)Now open your MainActivity.java and set text value-
 mTextView.setText(String.valueOf(new Date()));

Full Code:
1)MainActivty.java

package demo.watch.com.w7app;

import android.app.Activity;
import android.os.Bundle;
import android.support.wearable.view.WatchViewStub;
import android.widget.TextView;
import java.util.Date;

public class MainActivity extends Activity {

    private TextView mTextView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final WatchViewStub stub = (WatchViewStub) findViewById(R.id.watch_view_stub);
        stub.setOnLayoutInflatedListener(new WatchViewStub.OnLayoutInflatedListener() {
            @Override
            public void onLayoutInflated(WatchViewStub stub) {
                mTextView = (TextView) stub.findViewById(R.id.text);
                mTextView.setText(String.valueOf(new Date()));
            }
        });
    }
}

2)activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.wearable.view.WatchViewStub
    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:id="@+id/watch_view_stub"
    android:layout_width="match_parent" android:layout_height="match_parent"
    app:rectLayout="@layout/rect_activity_main" app:roundLayout="@layout/round_activity_main"
    tools:context=".MainActivity"
    tools:deviceIds="wear"></android.support.wearable.view.WatchViewStub>
 
3)round_activity_main.xml
<?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" tools:context=".MainActivity"  tools:deviceIds="wear_round">

    <TextView android:id="@+id/text" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:layout_centerHorizontal="true"
        android:layout_centerVertical="true" android:text="@string/hello_round" />
</RelativeLayout>
 
4)rect_activity_main.xml
<?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:orientation="vertical"
    tools:context=".MainActivity" tools:deviceIds="wear_square">

    <TextView android:id="@+id/text" android:layout_width="wrap_content"
        android:layout_height="wrap_content" android:text="@string/hello_square" />
</LinearLayout>