Android Open Source - Android.Wear.Message Main Activity

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License

The source code is released under:

MIT License

Java Source Code

package com.iamnbty.androidwear;
// w  w  w.  java  2  s . com
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.ViewFlipper;

import com.google.android.gms.common.api.ResultCallback;
import com.google.android.gms.wearable.MessageApi;
import com.google.android.gms.wearable.Wearable;
import com.iamnbty.androidwear.helper.ConnectedDeviceFinder;
import com.iamnbty.androidwear.helper.GoogleApiHelper;
import com.iamnbty.androidwear.model.ConnectedDevice;

import java.io.ByteArrayOutputStream;
import java.util.ArrayList;


public class MainActivity extends ActionBarActivity implements GoogleApiHelper.Callback, View.OnClickListener {

    private static final int VIEW_POSITION_NO_CONNECTED_DEVICE = 0;
    private static final int VIEW_POSITION_SEND_MESSAGE = 1;

    private GoogleApiHelper mGoogleApiHelper;

    private ConnectedDeviceFinder mConnectedDeviceFinder;

    private ViewFlipper mViewFlipper;

    private TextView mConnectedDeviceTextView;
    private EditText mMessageEditText;
    private Button mSendButton;

    private ConnectedDevice mConnectedDevice;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // set content view
        setContentView(R.layout.activity_main);

        // view matching
        mViewFlipper = (ViewFlipper) findViewById(R.id.view_flipper);
        mConnectedDeviceTextView = (TextView) findViewById(R.id.connected_device_textview);
        mMessageEditText = (EditText) findViewById(R.id.message_edittext);
        mSendButton = (Button) findViewById(R.id.send_button);

        // register View on click listener
        mSendButton.setOnClickListener(this);

        // setup Google Api helper
        mGoogleApiHelper = new GoogleApiHelper(this, this, Wearable.API);
    }

    @Override
    protected void onStart() {
        super.onStart();
        mGoogleApiHelper.activate();
    }

    @Override
    protected void onStop() {
        mGoogleApiHelper.deactivate();
        super.onStop();
    }

    @Override
    public void onGoogleApiClientReady() {
        if (mConnectedDeviceFinder == null) {
            mConnectedDeviceFinder = new ConnectedDeviceFinder(mGoogleApiHelper.getGoogleApiClient(), new ConnectedDeviceFinder.Callback() {
                @Override
                public void onDeviceFinderStarted(ConnectedDeviceFinder finder) {
                    mViewFlipper.setDisplayedChild(VIEW_POSITION_NO_CONNECTED_DEVICE);
                }

                @Override
                public void onDeviceFinderFinished(ConnectedDeviceFinder finder, ArrayList<ConnectedDevice> connectedDevices) {
                    if (connectedDevices.size() == 0) {
                        // display no connected device layout
                        mViewFlipper.setDisplayedChild(VIEW_POSITION_NO_CONNECTED_DEVICE);

                    } else {
                        // store connected device
                        mConnectedDevice = connectedDevices.get(0);

                        // set text
                        mConnectedDeviceTextView.setText(mConnectedDevice.displayName);

                        // display send message layout
                        mViewFlipper.setDisplayedChild(VIEW_POSITION_SEND_MESSAGE);

                    }
                }
            });
            mConnectedDeviceFinder.execute();
        }
    }

    @Override
    public void onGoogleApiClientNotReady() {

    }

    @Override
    public void onClick(View view) {
        if (view == mSendButton) {
            String message = mMessageEditText.getText().toString();

            if (message.trim().length() == 0) {
                Toast.makeText(this, "Please enter your message.", Toast.LENGTH_SHORT).show();

                InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
                inputMethodManager.showSoftInput(mMessageEditText, InputMethodManager.SHOW_FORCED);
            } else {
                sendMessage(message.trim(), R.drawable.ic_developer);
            }
        }
    }

    private void sendMessage(String message, int background) {
        String node = mConnectedDevice.nodeId;
        String path = message;
        byte[] data = toByteArray(BitmapFactory.decodeResource(getResources(), background));

        Wearable.MessageApi.sendMessage(
                mGoogleApiHelper.getGoogleApiClient(),
                node,
                path,
                data).setResultCallback(new ResultCallback<MessageApi.SendMessageResult>() {
            @Override
            public void onResult(MessageApi.SendMessageResult sendMessageResult) {
                Toast.makeText(MainActivity.this, "Message has been sent.", Toast.LENGTH_SHORT).show();
            }
        });
    }

    private static byte[] toByteArray(Bitmap bitmap) {
        ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.PNG, 100, byteStream);
        return byteStream.toByteArray();
    }

}

Java Source Code List

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