数据传递 运算

package com.hx.data;


public class Constants {

public static final String KEY="my_key";
public static final String MY_CHANEL="my_chanel";
}

<span style="font-size:18px;">package com.hx.data;

import java.util.Random;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;

import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {
	
	private	int count=0;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
	
		final Activity activity = this;
		Button button = (Button) findViewById(R.id.button);
		button.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View view) {
				
				Intent intent = new Intent(activity,ActivityB.class);
				
				startActivity(intent);
				new Thread(){

					@Override
					public void run() {
						Random rd=new Random();
						for(int i=0;i<20;i++){
							
							
							int[] data = new int [2];
							for(int j= 0;j<data.length;j++){
								data[j]=rd.nextInt(20);
							}
							Intent it = new Intent();
							it.putExtra(Constants.KEY, data);
							it.setAction(Constants.MY_CHANEL);
							activity.sendBroadcast(it);
							
							try {
								Thread.sleep(2000);
							} catch (InterruptedException e) {
								// TODO Auto-generated catch block
								e.printStackTrace();
							}
						}
					
					}
					
				}.start();
			}
		});
	}

}
</span>

<span style="font-size:18px;">package com.hx.data;

import android.app.Activity;
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.util.Log;
import android.widget.TextView;

public class ActivityB extends Activity{

	private TextView text,textA,textB;
	
	private MyBroadcastReceiver mBroadcastReceiver;

	private Handler handler;

	private final int WHAT = 123;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
	
		setContentView(R.layout.activity_main_b);
		text = (TextView) findViewById(R.id.text);
		textA=(TextView) findViewById(R.id.textA);
		textB=(TextView) findViewById(R.id.textB);
		
		mBroadcastReceiver = new MyBroadcastReceiver();
		
		IntentFilter filter = new IntentFilter();
		filter.addAction(Constants.MY_CHANEL);
		
		registerReceiver(mBroadcastReceiver, filter);
		
		handler = new Handler(){

			@Override
			public void handleMessage(Message msg) {
				
				if(msg.what == WHAT){
					int[] data = (int[]) msg.obj;
					int nums=data[0]+data[1];
					textA.setText("A:"+data[0]+"");
					textB.setText("B:"+data[1]+"");
					
					text.setText("和="+nums+"");
				}
				
			}
			
		};
	}
	
	
	@Override
	protected void onDestroy() {
		
		super.onDestroy();
		this.unregisterReceiver(mBroadcastReceiver);
	}


	public class MyBroadcastReceiver extends BroadcastReceiver {

		@Override
		public void onReceive(Context context, Intent intent) {
			
			int [] data = intent.getIntArrayExtra(Constants.KEY);
				Message msg = handler.obtainMessage();
				msg.obj=data;
				msg.what=WHAT;
				
				handler.sendMessage(msg);
				String s="";
				for(int i=0;i<data.length;i++){
					 s=s+data[i]+",";
				}
				Log.d("接收到数据->", s);
		}
				
	}
}
</span>