Android Open Source - ServicesTutorial Main Activity

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License

The source code is released under:

Apache License

Java Source Code

package com.yanlu.android.services.app;
/*from   w  w w . j a  v  a 2s.  c  o m*/
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;

import com.yanlu.android.services.app.service.BackgroundService;
import com.yanlu.android.services.app.service.HandlerService;
import com.yanlu.android.services.app.service.MyIntentService;
import com.yanlu.android.services.app.utils.ThreadUtils;


public class MainActivity extends ActionBarActivity {
    private static final String TAG = "MainActivity";
    private TextView mContent;
    public static final String BROADCAST_ACTION = "com.yanlu.android.services.app.broadcast";
    public static final String SERVICE_COUNTER = "counter";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mContent = (TextView) findViewById(R.id.tv_value);
        ThreadUtils.logThreadSignature();
        myHandler = new MyHandler();
        new Thread(new MyThread()).start();
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }


    public void doClick(View view) {
        switch (view.getId()) {
            case R.id.startBtn:
                Log.v(TAG, "Starting service...");
                Intent intent = new Intent(this, BackgroundService.class);
                startService(intent);
                break;
            case R.id.stopBtn:
                stopService();
                break;
            case R.id.startHandler:
                Log.v(TAG, "Starting Handler service...");
                startService(new Intent(this, HandlerService.class));
                break;
            case R.id.stopHandler:
                stopHandlerService();
                break;
            case R.id.startMyBtn:
                MyIntentService.startActionFoo(this, "MyIntentService", "start");
                break;
            case R.id.stopMyBtn:
                stopService(new Intent(this, MyIntentService.class));
                break;
        }
    }


    private void stopService() {
        Log.v(TAG, "Stopping service...");
        if (stopService(new Intent(this, BackgroundService.class))) {
            Log.v(TAG, "stopService was successful");
        }
        else {
            Log.v(TAG, "stopService was unsuccessful");
        }
    }
    private void stopHandlerService() {
        Log.v(TAG, "Stopping Handler service...");
        if (stopService(new Intent(this, HandlerService.class))) {
            Log.v(TAG, "stop Handler Service was successful");
        }
        else {
            Log.v(TAG, "stop Handler Service was unsuccessful");
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        registerReceiver(receiver, new IntentFilter(BROADCAST_ACTION));
    }

    @Override
    protected void onPause() {
        super.onPause();
        unregisterReceiver(receiver);
    }

    @Override
    public void onDestroy() {
        stopService();
        super.onDestroy();
    }


    /*
     * ??Service??
     */
    private BroadcastReceiver receiver = new BroadcastReceiver() {

        public void onReceive(Context context, Intent intent) {
//            mContent.setText("" + ++i);
            mContent.setText("" + intent.getExtras().getInt(SERVICE_COUNTER));
        }
    };
    private static Handler myHandler;

    class MyHandler extends Handler {
            @Override
            public void handleMessage(Message msg) {
                super.handleMessage(msg);
                Bundle b = msg.getData();
                String color = b.getString("key");
                mContent.append(color);

            }
        }

    class  MyThread implements Runnable {
        public void run() {
            try {
                Thread.sleep(10000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }


            Message msg = myHandler.obtainMessage();
            Bundle b = new Bundle();// ??????
            b.putString("key", "Handler Message");
            msg.setData(b);

            myHandler.sendMessage(msg); // ???Handler?????????,??UI

        }
    }
}

Java Source Code List

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