Handle实践

package com.example.app;

import android.os.HandlerThread;
import android.os.Message;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.os.Build;

public class MainActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Log.i("MainActivity", String.valueOf(Thread.currentThread().getId()));
        HandlerThread ht = new HandlerThread("Test");
        ht.start();
        MyHandler mh = new MyHandler(ht.getLooper());
        Message myMsg = new Message();
        Bundle info = new Bundle();
        info.putString("KEY", "Hello~!");
        myMsg.setData(info);
        mh.sendMessage(myMsg);
        mh.post(new MyRun());
    }


    @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);
    }

    /**
     * A placeholder fragment containing a simple view.
     */
    public static class PlaceholderFragment extends Fragment {

        public PlaceholderFragment() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragment_main, container, false);
            return rootView;
        }
    }

}

package com.example.app;

import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Log;

import java.util.logging.Level;


public class MyHandler extends Handler {
    public MyHandler(Looper looper){
        super(looper);
    }

    public MyHandler(){

    }

    @Override
    public void handleMessage(Message msg) {
        super.handleMessage(msg);
        Bundle inf;
        inf = msg.getData();
        Log.i("handleMessage", inf.getString("KEY"));
        Log.i("handleMessage",String.valueOf(Thread.currentThread().getId()));
    }
}

package com.example.app;

import android.util.Log;

/**
 * Created by Administrator on 14-3-18.
 */
public class MyRun implements Runnable{
    @Override
    public void run() {
        Log.i("MyRun", "Runnable");
    }
}